Telecommunications Abbreviations and Acronyms Speakeasy Speed Test Index 0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

Consultation ERKAN is pleased to provide this living document for unlocking the evergrowing vocabulary of Abbreviations and Acronyms of the w orld, including those of the early days before the word "Digital" was coined. We striv e to include all relevant terms and update the database frequently. Our coverage of more than 40,000 enteries is not "complete", contributions are gratefully acc epted. back to top - 0-9 - A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

0TLP Zero Transmission Level Reference Point 1/e First Edition 10ARSS No. 10A Remote Switching System 10B12B 10-Bits/12-Bits 10B2 10Base2 10BT 10BaseT 10FR Ten Party Flat Rate 10FSL 10.0 File System Layout 10X 10-Speed 12X 12-Speed 16CIF 16 times CIF 1AESS No. 1A Electronic Switching System 1ANCP No. 1A Network Control Point 1ASES No. 1A Service Evaluation System 1AVSS No. 1A Voice Storage System 1BTSPS No. 1B Traffic Service Position System 1EAX No. 1 Electronic Automatic Exchange 1ESS No. 1 Electronic Switching System 1FR One-Party Flat Rate 1MM 1 Meg 1MMS 1 Meg Modem Service 1MR One-Party Message Rate 1NCP No. 1 Network Control Point 1NF First Normal Form 1P 1-Party Line (Individual Line) 1PSS No. 1 System 1STP No. 1 Signal Transfer Point 1TSPS No. 1 Traffic Service Position System 1X Single-Speed 1XB No. 1 Crossbar 2 Dr 2 Draht (2 Wire) 2/e Second Edition 2ASTP No. 2A Signal Transfer Point 2B1Q Two Binary One Quaternary 2BESS No. 2B Electronic Switching System 2D 2-Dimensional 2Dr 2 Draht (2 Wire) 2DT Second 2EAX No. 2 Electronic Automatic Exchange 2ESS No. 2 Electronic Switching System 2FR Two Party Flat Rate 2FRR Two Party Flat Rate Ring 2FRT Two Party Flat Rate Tip 2MI/O 2 Mbit/s Input/Output 2MXC 2 Mbit/s Cross Connect 2NCP No. 2 Network Control Point 2NF Second Normal Form 2P 2-Party Line 2PPAPM Two-Pulse Amplitude and Phase Modem 2STP No. 2 Signal Transfer Point 2W 2-Wire 2WC Two-Way Call 2WTI 2-Wire Trunk Interface 2WW Two-Way WATS 2X Double Speed (2-Speed) 3-D 3-Dimensional 3/e Third Edition 3AU 3.1 kHz Audio 3B2T Three Binary Two Ternary 3CL Three Current Loop 3D 3-Dimensional 3D-TV Three-Dimensional 3DA 3-Dimensional Architecture 3DES Triple DES 3DOF Three Degrees of Freedom 3DR 3DRender 3ESS No. 3 Electronic Switching System 3GL Third Generation Language 3NF Third Normal Form 3P Three Pole 3PC Third Party Connect 3PDT Three Pole, Double Throw 3PST Three Pole, Single Throw 3PTY Three Party 3PTY Three Party Conference 3RD NUM Third Number 3WC Three-Way Calling 3WC Three-Way Call 3WC/CT Three-Way Calling/Call Transfer 3WC/CXR Three-Way Calling/Call-Transfer (Flash) 3WCPUB Three-Way Calling Public 3X Triple Speed (3-Speed) 3XB No. 3 Crossbar 4 Dr 4 Draht (4 Wire) 4/e Fourth Edition 4AETS No. 4A Electronic Translator System 4AXB No. 4A Crossbar Switching System 4B/3T Four Binary/Three Ternary 4B3T Four Binary Three Ternary 4CIF 4 times CIF 4D Four-Dimensional 4Dr 4 Draht (4 Wire) 4ESS No. 4 Electronic Switching System 4FR Four Party Flat Rate 4FRN Four-Fiber-Ring 4GL Fourth-Generation Language 4P Four Pole 4P 4-Party Line 4PAM Four-Level Pulse 4PDT Four Pole, Double Throw 4PST Four Pole, Single Throw 4W 4-Wire 4WC Four-Way Call 4WTI 4-Wire Trunk Interface 4WTS Four Wire Terminating Set 4X Quadruple Speed (4-Speed) 4XB No. 4 Crossbar Switching System 5/e Fifth Edition 56C 56 kbps Circuit Mode Data 5B/4B Five Bits/Four Bits 5ESS No. 5 Electronic Switching System 5RSM 5ESS Remote Switching Module 5X Pentuple Speed (5-Speed) 5XB No. 5 Crossbar Switching System 6/e Sixth Edition 64C 64 kbps Circuit Mode Data 68K Motorola 68xxx-Series Microprocessor 6DOF Six Degrees of Freedom 6WC Six Way Calling 6X Sextuple Speed (6-Speed) 7D Seven Digit number 88K Motorola 88xxx-Series Microprocessor 8FR Eight Party Flat Rate 8P 8-Party Line 8X Octuple Speed (8-Speed) 9 Nine back to top|0-9 - A - B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

A Accepted A Access (link) A Accumulator Register A Acknowledgement A Activation A Actual A Adaptation A Address A Address field A Address-Recognized A Agent A Aggregate A Amper A Ampere(s) Å Angström A Application Layer A Application Layer Service a Archive Library a Atto... (10-18) A Availability A Hypertext Anchor (HTML tag) A&D Analysis and Design A&E Arts and Entertainment Network A&M Additions and Modifications A/A Analog to Analog A/C Air Conditioner A/D Add/Drop A/D Analog-to-Digital A/D analogue-to-digital A/E Actual to Estimated A/G Air to Ground A/N Aphanumeric A/PC Auto PC A/R Alternate Route A/S Asynchronous/Synchronous A/S/C Alarm, Status, and Control A/SYS Access System A/V Audio/Visual a1 a-wire connection at the terminal equipment input port A1S All Ones a2 a-wire connection at the output port of a series-connected termina l equipment A3 Authentication Algorithm A3 A5/1 Encryption Algorithm A5 A5/2 Encryption Algorithm A5 A8 Algorithm A8 AA Absolute Address AA Access Agent AA Administrative Authority AA Alternate Addressing AA Application Assistant AA Application Association AA ATM Adaptor AA Audit Agent AA Automatic Answer A-A Analog to Analog AA1 ATM Adaptor, Type 1 AAA Authentication, Authorization and Accounting AAA Authentication, Authorization, Administration AAA Automated Acquisition Access AAAS American Association for the Advancement of Science AAB Automatic Alternative Billing AAB Automatic Answerback AABN AMA Alternate Billing Number AABS Automated Alternate Billing Service AABS+ Automated Alternate Billing Service Plus AAC Application Access Conditions AACS Air and Airways Communication System AAD Analog Alignment Disk AAE ATM Adaptation Entity AAE Auxiliary Access Equipment AAF Advanced Authoring Format AAI Alarm/Action Indicator AAK Answer Agent Key AAL ATM Adaptation Layer AAL1 ATM Adaptation Layer 1 AAL-1 ATM Adaptation Layer 1 AAL2 ATM Adaptation Layer 2 AAL-2 ATM Adaptation Layer 2 AAL3 ATM Adaptation Layer 3 AAL-3 ATM Adaptation Layer 3 AAL-3/4 ATM Adaptation Layer 3/4 AAL4 ATM Adaptation Layer 4 AAL-4 ATM Adaptation Layer 4 AAL5 ATM Adaptation Layer 5 AAL-5 ATM Adaptation Layer 5 AAL-CU AAL Composite User AALM AAL Management AALME AAL Management Entity AALP ATM Adaptation Layer Parameters AAN ATM Access Node AANS Auto Answer AAP Alternate Access Provider AAP Atomic Action Protocol AAPI Applet Application Programming Interface AAR Automatic Alternate Routing AAR Automatic Alternative Routing AARE A-Associate REsponse AARE A-ASSOCIATE response/confirm AARQ A-Associate ReQuest AARQ A-ASSOCIATE request/indication AAS Abbreviated Address Signal AAS Advanced Automation System AAS Automatic Announcement Subsystem AAT Agent Architecture Team AAT Automatic Answer Trunk AAT Automation of Analysis Tools AAT Availability Analysis Tool AAT Average Access Time AATP Away Across The Pond AAU Audio Access Unit AAU Automatic Answering Unit AAV Agile Autonomous Vehicle (Four-Legged Robot Vehicle) AAx ATM Adaptor, Type x AB Abbreviated Business Group Extension Number AB Access Burst AB Affected By AB Answer Back AB Automated Bibliography AB Postal code for Alberta ABA Additional Buffer Allocation ABATS Automatic Bit Access Test System ABB Aggregate Building Block ABB Assea Brown Boveri (S-D-CH) ABBH Average Bouncing Busy Hour ABBR Abbreviated ABBR Abbreviation ABBT Automatic Board-to-Board Testing ABC Abstract Base Class ABC Alcatel Business Communication ABC American Company ABC Answer-Back Code ABC ATM Bus Controller ABC Australian Broadcasting Corporation ABC Auto Billing Calling ABC Automatic Background Control (video) ABC Automatic Bass Control ABC Automatic Brightness Control ABC Automatic Business Connections ABCB AB Control Block ABCE ATM Broadband Control Element ABCE Automatic Bridged Call Exclusion ABCEACC Automatic Bridged Call Exclusion Access Codes ABCETACC Automatic Bridged Call Exclusion Toggle Access Code ABCN AMA Business Customer ID ABD Abbreviated Dialing ABD Average Business Day ABDA Automated Bilingual Directory Assistance ABDB A/B Trunk Data Block ABE Audited Build Executor ABEND Abnormal End ABET Accreditation Board for Engineering and Technology ABF Application By Form ABH ABCD Bit Handler ABH Average Busy Hour ABI Application Binary Interface ABIOS Advanced BIOS ABL Area Business Listing ABL Automatic Business Listing ABM Access Manager ABM Asynchronous Balanced Mode ABM ATM Buffer Manager ABNF Augmented BNF ABNN Add Bridged Night Number ABO Automatic Build-Out ABOM A-bis Operations and Maintenance ABR Answer/Bid Ratio ABR Area Border Router ABR Available Bit Rate ABRT A-ABORT request/indication ABS ABSolute abs Absolute Value ABS Acrylonitrile Butadiene Styrene copolymer (plastic) ABS Alarm Battery Supply ABS Alternate Billing Service(s) ABS Alternate Billing System ABS ATM Bearer Service ABS Authorized Bearer Services ABS Automatic Balance Selection ABS Average Busy Season ABSBH Average Busy Season Busy Hour ABSS Automated Broadband Surveillance System ABT Abort ABT ATM Block Transfer ABT/DT ATM Block Transfer with Delayed Transmission ABT/IT ATM Block Transfer with Immediate Transmission ABTT Advisory Board on Technical Trends (ISO-IEC) ABU Asia-Pacific Broadcasting Union AC ACcept AC ACceptor control AC Access Channel AC Access Charge AC Access Class (C0 to C15) AC Access Concentrator AC Access Connection AC Access Control AC Access Customer AC Account Code AC Acknowledged Connectionless AC Action AC Action Coordinator AC Agent Command AC Alerting Channel AC Alignment Check AC Alternating Current AC Announcement Controller AC Answer Complete AC Answered Calls Only AC Application Context AC Area Code AC Assignment Channel AC Attendant Console AC Authentication Center AC Authentication Code AC Authentications Centre AC Authorization Center AC Authorization Code AC Automatic Callback AC Automatic Control AC Awaiting Connection AC/ADC Automatic Callback/Any Designated Call ACA Adaptive Channel Allocation ACA Advanced Computer Application (IIASA' group) ACA Area Coverage Analysis ACA Authorization Code Assurance ACA Automated Cable Analysis ACA Automatic Circuit Assurance ACAP Application Configuration Access Protocol ACARD Advisory Council for Applied Research and Development ACAS Access Charge Analysis System ACAS Application Control Architecture Services ACATS Advisory Committee on Advanced Television Systems ACAU Automatic Calling and Answering Unit ACB Access Barred message ACB Access Barred signal ACB Account Code Billing ACB Address Control Block ACB Automatic Call Back ACB Automatic Callback ACBA Automatic Callback Activate ACBAC Automatic Callback Active/Inactive Status ACBACC Automatic Callback Access Codes ACBAR Automatic Callback/Automatic Recall ACBB Automatic Callback Billing Records ACBD Automated Component Based Development ACBD Automatic Callback Deactivate ACBG Automatic Callback Business Group ACB-I ISDN Automatic Callback ACBISW Automatic Callback Intra-Switch Only ACBMA Automatic Callback Maximum Allowed ACBT Automatic Callback Toggle ACBT1 Automatic Callback Timer 1 ACBT3 Automatic Callback Timer 3 ACBT4 Automatic Callback Timer 4 ACBT5 Automatic Callback Timer 5 ACBTACC Automatic Callback Toggle Access Code ACBTYPE Automatic Callback Type ACC ACCepted ACC Access ACC Access Code(s) ACC Access Control ACC Access Node ACC ACCmulator ACC Account Card Calling ACC Account Code ACC Accumulator ACC Adaptive Channel Control ACC Address Complete Coin ACC Analog Control Channel ACC Anonymous Credit Card aCC ANSI C++ Compiler ACC Area Control Centre ACC Augmented ClearCase ACC Australian CCITT Committee ACC Automated Calling Card ACC Automated Credit Card ACC Automatic Congestion Control ACC Automatic Congestion Control Information message ACCA All-Channel Concentric Allocation ACCAN Alternate Credit Card Account Number ACCB ANI/Coin Control Block ACCD Account Code Digits ACCD Address or Command Collection Dialog AccDi Access Delivery Information ACCFB Attendant-Extended Calls to Busy ACCFNA Attendant-Extended Calls to Call Forwarding No Answer ACCH Associated Control Channel ACCM Asynchonous Control Character Map ACCMD Access Mode ACCN Alternate Credit Card Number ACCOLC Access Overload Class ACCS Automated Calling Card Service ACCS Automated Calling Card System ACCS Automatic Calling Card Service ACCT ACCes Time ACCT Account Codes ACCY ACCuracY ACD Accumulated Connection Delay ACD Active Call Dialog ACD Adobe Capture Document ACD Agent Command Dictionary ACD Alarm Control and Display ACD Automatic Call Distribution ACD Automatic Call Distributor ACD Automatic Cash Dispenser ACD Average Call Distance ACD/MIS Automatic Call Distribution Management Information System ACDB Agent Command Database ACDB Automatic Call Distribution Base ACDDN Automatic Call Distribution Directory Number ACD-ESS Automatic Call Distributor-Electronic Switching System ACDF Access Control Decision Function ACDMIS Automatic Call Distribution Management Information System ACDMR ACD Management Reports ACDNR Automatic Call Distribution Not-Ready ACDRTD ACD Real Time Display ACE Access Connection Element ACE Access Control Entry ACE Access-Control Entry ACE Adaptive Communication Environment ACE Advanced Computing Environment (Compaq) ACE Adverse Channel Enhancements ACE A-Interface Control Element ACE Application Connection Element ACE Application Creation Environment ACE Assessment and Conversion Environment ACE Asynchronous Communication Element ACE ATM Crossbar Element ACE Audio Compression/Expansion ACE Automated Cable Expertise ACE Automatic Cable Expertise (ATT) ACE Automatic Calling Equipment ACE Automatic Crossconnect Equipment ACE Auxiliary Control Element ACEC Advisory Committee on EMC (IEC) ACEES Attendant Console End-to-End Signaling ACEG Alternating Current Equipment Ground ACELP Algebraic Codebook-Excited Linear Prediction ACET Advisory Committee on Electronics and Telecommunications ACF Access Configuration File ACF Access Control Field ACF Access Control Field (IEEE 802) ACF Access Control Function ACF Admission Confirm ACF Admission Confirmation ACF Advanced Collaborative Filtering ACF Advanced Communication Function (SNA) ACF Advanced Communications Facility ACF Advanced Communications Functions ACF Attribute Configuration File ACF Authentication Control Function ACF Auto-Correlation Function ACF/NCP Advanced Communication Function for the Network Control Program (S NA) ACF/VTAM Advanced Communication Function for the VTAM (SNA) ACFC Address and Control Field Compression ACG Adjacent Charging Group ACG Agent Command Generator ACG Automatic Call Gap ACG Automatic Call Gapping ACG Automatic Code Gap ACG Automatic Code Gapping ACGP Additional Calling Party Number ACH Attempts per Circuit per Hour ACH Automated Clearing House ACHARGE AMA Chargeable End ACHI Application Channel Interface ACI Access Control Information ACI Access-interface Channel Identifier ACI Additional Call Information message ACI Adjacent Channel Interference ACI Ameritech Communications, Inc. ACI Application Context Identifier ACI AT&T Communications Customer Interface ACI AT&T Communications ISDN ACI Automatic Call Identification ACIA Access Control Inner Area ACIA Asynchronous Communication Interface Adapter ACIA Asynchronous Communications Interface Adapter ACID Access Indentifier ACID Application Context ID ACID Atomic, Consistent, Isolated, and Durable ACID Atomicity, Consistency, Isolation, and Durability ACID Atomicity, Consistency, Isolation, and Durability (X.860) ACITS Advisory Committee on Information Technology Standardization (SOG- IT) ACK (affirmative) ACKnowledgement ACK Acknowledge ACK ACKnowledged ACK Acknowledgement ACK/NACK Positive/Negative ACKnowledgement ACL Access Control List ACL Access Control List (X.800) ACL Advanced CMOS Logic ACL Agent Communication Language ACL Application Call Leg ACL Asynchronous Connection Language ACL Automatic Congestion Level ACLU American Civil Liberties Union ACM Access Control Machine ACM Access Control Manager ACM Access Control Mechanism ACM Accumulated Call Meter ACM Active Call Model ACM Address Complete Message ACM Adjunct Call Model ACM Architecture Capture Method ACM Array Class Manager ACM Association for Computing Machinery ACM Audio Compression Manager ACMA Anchored Constant Modulus Algorithm ACMA Atlantic Cable Maintenance Agreement ACMOS Automatic Customer Message Outputting System ACMS Advanced Call Management Services ACMS Application Control and Management System (DEC) ACN ACount Number ACN Actual Carrier Number ACN ATM Carrier Networks ACNA Access Carrier Name Abbreviation ACNA Automatic Customer Name and Address ACNS ATM Carrier Network Services ACNS Attendant Console Night Service ACO Accounting Control Office ACO Additional Call Offering ACO Alarm Cut Off ACO Attendant Console Camp-On ACO Audible Cutoff ACO Augmented Channel Occupancy ACOB Additional Call Offering Billing Records ACOD Access Code Digits ACOLI Advance Circuit Order and Layout Information ACOM Attendant Console Operational Measurements ACOP Additional Connected Party Number ACOR Additional Call Offering- Restricted ACO-R Additional Call Offering- Restricted ACOS Advisory Committee On Safety (IEC) ACOT Analog Central Office Terminal ACOU Additional Call Offering- Unrestricted ACOU Additional Call Offering Unconditional ACO-U Additional Call Offering- Unrestricted ACP Action Control Point ACP Action Point ACP Adjacent Channel Power ACP Adjunct Call Processing ACP Advanced Communications Protocol ACP Alarm Control Process ACP Anywhere Call Pick-Up ACP Application Change Package ACP Application Circuit Pack ACP Architecture Control Process ACP Authorization Code Prefix ACP Automatic Circuit Provisioning ACP Auxiliary Communications Processor ACPA Audio Capture and Playback Adapter ACPE Application Call Processing Engine ACPI Advanced Configuration and Power Interface ACPM Association Control Protocol Machine (ACSE) ACPN Additional Called Party Number ACQS Automated Charge Quotation Service ACR Abandon Call and Retry ACR Absolute Category Rating ACR AC Voltage On Ring ACR Access Charge Recording ACR Account Code Required ACR Adaptive Controlled Routing ACR Aggregate CND Recording ACR Allowed Cell Rate ACR Allowed Current Rate ACR Anonymous Call Rejection ACR Attenuation to Crosstalk Ratio ACR Automatic Call Recording ACR Automatic Character Recognition ACRAC Anonymous Call Rejection Active/Inactive Status ACRB Anonymous Call Rejection Billing Records ACRE Authorization and Call Routing Equipment ACRJ Anonymous Call Rejection ACRONYM Any Concise Rendering of Obfuscatory Nomenclature Yielding Mnemoni cs (from: Dan Caugherty) ACRRC Anonymous Call Rejection Restricted Control ACRT Administrative CRT ACRTC Advanced Cathode Ray Tube Controller ACS Access Control Store (CCA/VTS) ACS Access Control System (DAB) ACS Advanced Cellular System ACS Advanced Communication Service (Bell) ACS Advanced Communication Services ACS Assembly Control System ACS Association Connection Segment ACS Asynchronous Communications Server ACS ATM Circuit Steering ACS ATM Core Switch ACS Automatic Call Back/Recall ACS Automatic ACSA Access Control Specific Area ACSE Association Control Service Element ACSI Automatic Calling Station Identification ACSSB Amplitude-Compounded Single- modulation ACT Abstract Conformance Test ACT AC Voltage On Tip ACT Access Code Translations ACT Activate ACT Activatible act Activation ACT Active ACT Activity ACT Applied Computerized ACT Architecture Capture Team ACT Asynchronous Communication Tree ACT Audiographic Terminal ACTA Adaptive-Cycle Tunable-Access ACTA America's Carriers Association ACTAS Alliance of Computer-Based Telephony Applications Suppliers ACTE Advisory Committee for Terminal Equipment ACTE Approval Committee for Terminal Equipment ACTE Approvals Committee for Telecommunications Equipment ACTE Approvals Committee for Terminal Equipment ActID Action Identifier ActID Activity Identifier ACTLU Active Logical Unit ACTOM Advisory Committee on Technical and Operational Matters (of Inmars at) ACTPU Active Physical Unit ACTR Automatic Call Type Recognition ACTS Advanced Communication Technology Satellite ACTS Advanced Communications Technologies and Services ACTS Automated Coin Service ACTS Automated Coin Toll Service ACTS Automated Computer Time Service ACTS Automatic Circuit Test System ACTT Advanced Communication and Timekeeping Technology Actv Active ACTV Advanced Compatible TeleVision ACU Access Control Unit ACU Acknowledgement signal unit ACU Alarm Control Unit ACU Combining Unit ACU Antenna Coupling Unit ACU Automatic Calling Unit ACUTA Association of College and University Telecommunications Administr ators ACW Address Code Word AD Abbreviated Dialing AD Active Directory AD Addendum Document to an OSI standard (ISO) AD ADdress AD Adjunct AD Application Directory AD Application Dispatch AD Architecture Defined AD Architecture Design AD Architecture Designed AD Area Director AD Assembly Drawing AD Autonomous Circuit-Mode Data AD Awaiting Disconnect AD ISO for Principality of Andorra A-D Analog to Digital ADA Add Authcode ADA Administration Agent ADA Advanced Directory Assistance ADA Aldus Developer's Association ADA AutoDirectional Antenna (Blaupunkt) ADACC Automatic Directory Assistance Call Completion ADACC-AB Automatic Directory Assistance Call Completion with Alternate Bill ing ADAD Automatic Dialing-Announcing Device ADAI Advanced Digital Audio Interface ADAP Adaptive Profile ADAPt Adaptive Digital Access Protocol ADARTS Ada-Based DARTS ADAS Automated Directory Assistance Service ADAS+ Automated Directory Assistance Service Plus ADAS+ Automated Directory Assistance System Plus ADB Alarm Detector Base ADB Apple (Inc.) Desktop Bus ADB Apple Desktop Bus ADBS Access Data Base System ADC Adaptive ADC Add with Carry (80x86 inst) AdC Address Code ADC Address Complete ADC ADdress complete, Charge ADC Address Complete, Charge signal ADC Administration Center ADC Advanced Data Connector ADC Advanced Data Controller ADC American Digital Cellular ADC Analog/Digital Converter ADC Analogue to Digital Converter ADC Applied Data Communications ADCCP Advanced Control Procedures ADCCP Advanced Data Communications Control Protocol ADCI Automatic Display Call Indicator ADCP Automated Data Changes Process ADCU Association of Data Communications Users ADD Adapter Device Driver ADD Add line to existing hunt group Add Addendum ADD Agent Data Decoupling ADDMD ADministrative Directory Management Domain ADDPH Add/Change Packet Handler Options ADDR Address ADDS Attribute Design Database System ADDS Automatic Direct Dialing System ADE Advanced Development Environment ADE Application Development Environment ADE Automatic Design Engineering ADEPT Analysis Data Extraction and Performance Tool ADF Access Control Decision Function ADF Access Data Function ADF Adapter Description File ADF Adaptive Digital Filter ADF ADdress Field ADF Affected Destination Field ADF Agent Data Framework ADF AMA Data File ADF Application Data File ADF Authentication Data Function ADF Automatic Direction Finder ADF Automatic Document Feeder ADF Auxiliary Distribution Frame ADFD Action Data Flow Diagram ADGT Advisory Group on Data Transmissions ADH Automatic Data Handling ADI Address Incomplete message ADI Address Incomplete signal ADI Alternate Digit Inversion ADI Area of Dominant Influence ADI Automatic Deactivation Indication ADI Automatic Deactivation Indicator ADK Applications Development Kit ADL Abbreviated Dialing ADL Abbreviated Dialing List ADL Address Data Latch ADL Animation Description Language ADLC Advanced Control ADLC Advanced Data Link Controller ADM Adaptive Data ADM Adaptive Delta Modulation ADM Add/Drop Multiplex ADM Add/Drop Multiplexer ADM Add/Drop Multiplexing ADM Add-on Data Module ADM Administration ADM ADMinistrative department (ETSI) ADM Administrative Management Domain ADM Agent Data Model ADM Asynchronous Disconnect Mode ADM Asynchronous Disconnected Mode ADMA Amplitude Division Multiple Access ADMD Administration Management Domain ADMD ADministration Management Domain (MHS) ADMF ADSI Data Message Format ADN Abbreviated Dialling Number ADN ADdress complete, No charge ADN Address Complete, No-charge signal ADN Administration ADN Advanced Digital Network ADNIC AMA DNIC ADO ActiveX Data Object ADO Add Option(s) ADO Add Order ADO Asynchronous Data Option ADP Adaptation Sublayer ADP Additional (Overtime) Period ADP Automatic Data Processing ADPACS Automated Data Processing And Communication Service ADPC Automatic Data Processing Center ADPCM Adaptive Delta-PCM ADPCM Adaptive Differential PCM ADPCM Adaptive Differential Pulse Code Modulation ADPE Automatic Data Processing Equipment ADPS Automatic Data Processing System ADPS Automatic Data Processing System ADPT ADaPTor, ADaPTer ADQ Almost Differential Quasi-ternary ADR Abbreviated and Delayed Ringing ADR Adaptive Routing ADR Address ADR Advanced Design Research ADR Application-Dependent Route ADR Availability Data Report ADS Active Double Star ADS Address Screening ADS Administration and Data Server (HICOM) ADS Advanced Digital System ADS Announcement/Detection Subsystem ADS Any Digital Switch ADS Application Developer's Seat ADS Application Development System ADS ASIC Design System ADS ATM Distributed Switch ADS Audiogram Delivery Service ADS Austrian Digital Switch ADS Austrian DMS System ADS Automatic Data Set ADSH Audio Stream Handler ADSI Active Directory Service Interface ADSI Advanced Display Services Interface ADSI Analog Display Services Interface ADSL Asymmetric ADSL Asymmetrical Digital Subscriber Line ADSL Asymmetrical Digital Subscriber Loop ADSM ADSTAR Distributed Storage Manager ADSP Advanced Processor ADSP Apple Datastream Protocol ADSP AppleTalk Data Stream Protocol ADSR Automatic Dead System Recovery ADT Abstract Data Type ADT Access for Windows Developer's Toolkit ADT Advanced Display Technology ADT Alaska Daylight Time ADT American District Telegraph ADT Atlantic Daylight Time ADT Audit Driver Task ADT Automatic Data Transmission ADT Automatic Deactivation Threshold ADTC Austrian Digital Trunk Controller ADTE Asynchronous Data Terminal Equipment ADTE Automatic Deactivation Threshold Exceeded ADTF ACR Decrease Time Factor ADTS Automated Data and Telecommunication Service ADTS Automated Digital Terminal System ADTS Automatic Data Test System ADTS Automatic Digital Transmission System ADTV Advanced ADU Accumulation and Distribution Unit ADU Application Data Unit ADU Automatic Dialing Unit ADU Automatic Dialling Unit ADVICE Aid in Design Verification for IC Engineering ADVM Adaptive Delta Modulation Voice Modem ADW Aerial Distribution Wire ADW Analysis and Design Workstations ADX Address Complete, Coin-Box signal ADX Automatic Exchange AE Acceptor Error AE Address Extension AE Application Entity AE Application Entity (OSI-AL) AE Applications Environment AE Automatic Electric Co. AE Automation Environment AE ISO country code for United Arab Emirates AEA American Electronics Association AEC Acoustic Echo Canceller AEC Acoustic Echo Control AEC Alternate Exchange Carrier AEC Architecture, Engineering, and Construction AECMA Association Européenne des Constructeurs de Matériel Aérospatial AECo Automatic Electric Company AEE Asociacion ElEctrotécnica AEF Access Control Enforcement Function AEF Additional Elementary Functions AEF Address Extension Field AEI Additional Equipment Interface AEI Application-Entity Invocation AEIMP Apple Event Interprocess Messaging Protocol AELE Association Européenne de Libre Echange (EFTA) AEM Analogue Extension Module AEMK Answer Emergency Key AEN Asynchronous Event Notification AENOR Asociacion Espanola de NORmalizacion (E) AENOR Asociacion Espanola de Normalizacion y Certificacion AEP Acoustic Echo Path AER Application Event Record AER Application Event Recorder AER Application Event Recording AERM Alignment Error Rate Monitor AES Aircraft Earth Station AES Application Environment Specific AES Application Environment Specification AES Asynchronous Event Scheduler AES ATM End System AES Audio Engineering Society AES Auger Electron Spectroscopy AES/EBU Audio Engineering Society/European Broadcast Union AESA ATM End Station Address AESA ATM End System Address AESC Automatic Electronic Switching Center AET Application Entity Title AET Architecture Evolution Team AETJ GTE Automatic Electric Technical Journal (periodical) AF Access Facility AF Access Fault AF Access Function AF Address Family AF Adjust Flag AF Alternative Frequencies (RDS) AF Applications Framework AF Audio Frequency AF AudioFile AF Auxiliary Carry Flag AF ISO country code for Islamic State of Afghanistan A-F Actual Operators to Final Operators AFADS Automatic Force Administration Data System AFAIK As far as I know AFC Additional Functional Call AFC Address Complete, Subscriber Free, Charge signal AFC Alternate Function Code AFC Application Foundation Classes AFC Automatic Fee Collection AFC Automatic Frequency Control AFDP Adaptive File Distribution Protocol AFE Active Feature Element AFE Analog Front End AFF Advanced Filtering Facility AFFUT Association Française des Utilisateurs du Téléphone et des Télécomunications AFG Access Feature Grouping AFI Authority and Format Identifier AFI Authority and Format Identifier (NSAP) AFIPS American Federation of Information Processing Societies AFIS Aerodrome Flight Information Service AFIT Automated Fault Insertion Testing AFL Application Framework Library AFM Adobe Font Metric AFM Atomic Force Microscope AFM Atomic Force Microscopy AFM Audio (8mm VTR Sony Inc.) AFN Access Feeder Node AFN Address Complete, Subscriber Free, No-Charge signal AFN All Figure Number AFNOR Association Francaise de Normalisation AFP Advanced Freephone AFP AppleTalk Filing Protocol AFP Automatic Floating Point AFP Automatic Frequency Planning AFPS Advanced File and Print Services AFPS Automatic Facility Protection Switching AFR AFR Trigger AFR Annualised Failure Rate AFR Automatic Field Recognition AFR Automatic Flexible Routing AFR Automatic Format Recognition AFR Awaiting Forward Release AFRDP Automatic Flexible Routing Dialing Plan AFS Advanced Freephone Service AFS Andrew File System AFS Andrew File System (TCP/IP) AFS Audit File Switch AFSK Audio Frequency Shift Keying AFT Adapter Fault Tolerance AFT Analog Facility Terminal AFT Authentication Firewall Traversal AFT Automatic File Transfer AFT Automatic Frequency Tuning AFTN Aeronautical Fixed Telecommunication Network AFUTT Association Francaise de Telephone et des Telecommunications (F) AFX Address complete, subscriber Free, coin boX AFX Address Complete, Subscriber Free, Coin-Box signal AG Address Generation AG Advisory Group (ETSI) AG Aktien Gesellschaft AG Associated Group AG ISO country code for Antigua and Barbuda AG Try Again AG/EEE Above Ground Electronic Equipment Enclosure AGA Associated Group Assignment AGA Associated Group Assignments AGC Access Group Controller AGC Advanced Graphic Controller AGC Automatic Gain Control AGC Automatic Gapping Controls AGCH Access Grant Channel AGCS AG (AT&T/GTE) Communication Systems AGDS Absolute Global Data Segment AGE Automation Generic Environment AgentX Agent Extensibility AGEX Address Generation/Execute Cycle AGGR Aggregate AGI Address Generation Interlock AGI Associated Group Indicators AGIS Apex Global Information Services AGND Analogue GrouND AGNES Aggregate Network Evolution Simulator AGP Accelerated Graphics Port AGP Advanced Graphics Port AGR Adaptive Grooming Router AGRP Associated Group AGRU Automatische Ansage gaenderter Rufnummern (Call forward to automat ic announcement of changed directory numbers) AGS Assignable Grade of Service AGSR Authorized GSA Scheduler Representative AGT Active Generations Table AGT Alberta Government Telephone AGTK Application Generator Tool Kit AGV Automatic Guided Vehicle AH Acceptance Handshake AH Accumulator Register High Half AH Ad Hoc AH Application Header AH Artech House AH Authentication Header AH Average Hour AHAB Automated Headset Adapter Box AHAB Automatic Headset Adapter Box AHCA Average Hour Call Attempt AHCM Absolute Humidity Control Module AHFG ATM-attached Host Functional Group AHG Ad Hoc Group AHJ Authority Having Jurisdiction AHLF Additional High Layer Function(s) AHPL A Hardware Programming Language AHR Address Hold Register AHT Average Holding Time Ai Action indicator AI Activation Indication AI Active Indication AI Activity Interrupt AI Adapter Interface AI Address Incomplete AI Agent Information AI Air Interface Ai A-law Inverted AI Alerting Indication AI Antenna Interface AI Artificial Intelligence AI Aspect Interface AI Auto Inserted AI Automatic Identification AI Automatic Intercept AI ISO country code for Anguilla AIA Action Item Assignment AIA Application Integration Architecture (DEC) AIA Automatic Internal Administration AIAG Automative Industry Action Group aib Alarm Indication Bit AIB Automatic Intercept Bureau AIC Access Interface Card AIC Analog Interface Circuit AIC Asian ISDN Council AIC Automatic Intercept Center AIC Awaiting Incoming Continuity AID Access Identifier AID Access Point Identifier AID Agent ID AID Application Identifier AIDAF Agent Interworking Data Access Framework AIDS Automatic Inventory Directory System AIEA Agence International de l'Energie Atomique AIEE American Institute of Electrical Engineers AIF Additional Information Field AIF Application Interface AIF Audio Interchange Format AIFC AIFF With Built-In Compression AIFF Audio Interchange File Format AIFL Automatic Identification of Outward Dialing Failure AII Active Input Interface AII Additional Information Indicator AILC Asynchronous Interface Line Card AILU Asynchronous Interface Line Unit AIM Advanced Informatics in Medicine AIM Agent Interworking Mechanism AIM Apple, IBM, Motorola AIM Application Integration Module AIM Architectural Improvement of the Month AIM Asynchronous Interface Module AIM ATM Inverse Multiplexer AIM Automatic Inspect Mode AIM Awaiting Incoming Message AIMS Advanced Image Management System AIMS Auto-Indexing Mass Storage AIMUX ATM Inverse Multiplexing AIN Additional Information Number AIN Advanced Intelligent Network AIN Attribute Identification Number AINAP AIN Application Protocol AINDN Advanced Intelligent Network DN AINGR Advanced Intelligent Network Generic Requirements AINI ATM Internetwork Interface AINREL AIN Release AINS Automatic In-Service AINT Adjacent Intermediate Node Translator AINTC Automatic Intercept Service Call Completion AINTCC Automatic Intercept Call Completion AIO Additional Information Octet AIOD Automatic Identification Outward Dialing AIOD Automatic Identified Outward Dialing AIODLK Automatic Identified Outward Dialing Link AIP Additional Information Presentation (supplementary service) AIP Aditional Presentation Information AIP Agent Interworking Protocol AIP Air Interface Protocol AIR Action Item Resolution AIR Additive Increase Rate AIR Additive Increase to Rate AIR Ad-hoc Information Request AIR Allowed Information Rate AIR Attendant Console Intermediate Release AIRF Additive Increase Rate Factor AIRS Automatic Image Retrieval System AIRS Automatic Intercept Retrieval System AIS Alarm Indication Signal AIS Alarm Indication Signalling AIS Alarm Inhibit Signal AIS Atria Information Switchboard AIS Automatic Intercept Service AIS Automatic Intercept Signaling AIS Automatic Intercept System AISP Advanced ISP AISUP Australian ISUP AIT Additional Information Type AIT Advanced Intelligent Tape AIT Architecture Integration Team AIT Average Instruction Time AIU Access Interface Unit AIU Alarm Interface Unit AIU Analog Interface Unit AIV Architecture Integration and Verification AIW APPN Implementors' Workgroup AIX Advanced Interactive Executive AIX Advanced Interactive eXecutive (IBM/UNIX) AK Acknowledgement AK Attendant Key AK Data Acknowledgment AK U.S. postal code for Alaska aka Also Known As AKA Authentication and Key Agreement AKM Apogee Kick Motor AKO Add Key Option AL Access Line AL Access Link AL Accumulator Register Low Half AL Alignment AL ALphabetic AL Ambience Listening AL Analog Link AL Analog Loopback AL Application Layer (OSI) AL Application Layer-Call Control Interface AL ISO country code for People's Socialist Republic of Albania AL U.S. postal code for Alabama AL1 Adaptation Layer 1 AL2 Adaptation Layer 2 AL3 Adaptation Layer 3 ALB Association Link Block ALBO Automatic Line Build-Out ALC Airline Link Control ALC Airlines Line Control (IBM) ALC Application Life Cycle ALC Automatic Level Control ALC Automatic Load Control ALCIN Alcatel Intelligent Network ALCM Austrian Line Concentrating Module ALD Architecture Level Design ALD Asymmetric Life Dependency ALD Attribute List Display ALD Automated Logic Diagram ALDOS ACI Long Distance Operations System ALE Address Latch Enable ALE Address Lifetime Expectancy ALE Address Lifetime Expectations ALE Approval Liaison Engineer (UK) ALERT ALERT function for different types of alert ALERT Alerting message ALF Application Layer Framing ALFA Automatic Laser-Fiber Assembly ALFE Alert Logic Filter Editor (Bool and Babbage) ALGC Austrian Line Group Controller ALGM ALGorithM ALGOL Algorithmic Oriented Language ALI Application Level Interface ALI ATM Link Interconnect ALI Automatic Line Identification ALI Automatic Location Identification ALIT Automatic Line Insulation Test ALIT Automatic Line Insulation Testing ALITS Automatic Line Insulation Testing System ALIU Alarm Line Interface Unit ALLC Automatic Logical Link Connection ALLF Additional Low Layer Function(s) ALM Alarm ALM AppWare Loadable Module ALM Association Link Manager ALM ATM Layer Manager ALMSTAT Alarm Status ALMSTATGRP Alarm/Status Settings Group Identifier ALN AMA Line Number ALO Association Link Object ALP Abstract Local Primitive ALP Application Layer Program ALP Automated Language Processing ALP Automated Learning Process ALPC Adaptive Linear Predictive Coding ALR Active Line Rotation ALR Advanced Logic Research ALRM Alarm ALRS Admiralty List of Signals ALS Alerting Signal ALS Application Layer Service ALS Application Layer Structure (OSI) ALS Automatic Laser Shutdown ALSC Alternate Line Screening Code ALSTTL Advanced Low-power Schottky Transistor-Transistor Logic ALT Accelerated Life Test ALT Alerting message ALT Alternate ALT Alternate Local Transport Company alt Alternative ALT ALTitude ALT Automatic Line Test ALT Automatic Line Testing ALT Automatic Link Transfer ALTANN Alternate Announcements ALTP Accelerated Life-Cycle Test Program ALTS Alternative Local Transport Supplier ALTS Association for Local Telecommunications Services ALTS Automatic Line Test Set ALU Abbreviated Line-Up ALU Arithmetic and Logic Unit ALU Arithmetic Logic Unit ALU Arithmetic/Logic Unit ALU Average Line Usage ALU Average Line Utilization AM Access Management AM Access Manager AM Access Method AM Access Module AM Accounting Management AM Activity Manager AM Address Marker AM Address Modifier AM Administrative Module AM Agency Model AM Agent Manager AM Airline Mileage AM Alignment Mask AM AlphaMosaic AM Amplitude Modulation AM Ante Meridian AM Application Model AM ASCII Mediation AM Association Manager AM Audio Monitor AM DDOC Section: AMA/Billing Changes AM ISO country code for Armenia AM/PSK Amplitude Modulation/Phase Shift Keying AMA Automatic Message Accounting AMA TSG Automatic Message Accounting Technical Support Group AMAB Automatic Message Accounting Billing AMAB Automatic Message Accounting Buffer AMACC AMA Collection Center AMACS Automatic Message Accounting Collecting System AMACS Automatic Message Accounting Collection System AMAD AMA Digits Dialed Wild Card AMADNS Automatic Message Accounting Data Networking System AMAF Atlantech Management Application Framework AMAI AMA International AMAP Adaptive Mobile Access Protocol A-MAP A-field MAP AMARC Automatic Message Accounting Recording Center AMARCS Automatic Message Accounting Recording System AMARS Automatic Message Accounting Recording System AMASE AMA Standard Entry AMASTR AMA Structure Code AMAT Automatic Message Accounting AMATP Automatic Message Accounting Transaction Processor AMATPS Automatic Message Accounting Teleprocessing System AMBCE Activation of Manual Bridging Call Exclusion AMC Access Multiplexer for CaTV AMC American Movie Classics AMCP Adjunct Mobility Control Point AMD Advanced Micro Devices AMD Ammendment AMDS Amplitude Modulation Data System AME Access Mechanism AMEL Active- Electroluminescent AMES ATM Mobility Extension Service AMF Access Management Function AMF Alternate Master Format AMF Application Messaging Framework AMF Association Manager Framework AM-FDM Amplitude Modulated-Frequency Division Multiplexed AMH Advanced Measurement Head AMI Alternate Mark Inversion AMI Alternate Mark Inversion (digital data transmission format) AMI American Megatrends, Inc. AMI American Microsystems International AMI Application Messaging Interface AMI Automatic Modem Insertion AMI Autonomous Message Interface AMIEE Associate Member of the Institution of Electrical Engineers (GB) AMIP Access Module Interconnect Paddle card AMIPC AM Interconnect Paddle Card AMIS Agricultural Market Intelligence System AMIS Audio Messaging Interchange Specification AML Actual Measured Loss AML Applications Module Link AMLCD Active Matrix Liquid-Crystal Displays AMLCD Active-Matrix LCD AMM Advanced Memory Management Amm Ammendment AMM Answer Mode Modem AMN Acknowledgement of Mcu Number AMON ATM Monitoring AMP Acknowledge Mode Protocol AMP Active Monitor Present AMP Agent Meeting Point AMP AIN Maintenance Parameter amp Ampere AMP Amplifier AMP Auxiliary Channel Multiplexing Pattern AMPS Advanced Service AMPS Advanced Mobile Phone System AMPSK Amplitude Modulation Phase Shift Keying AMR Automatic Message Recording AMR Automatic Message Routing AMR5 Automatic Message Recording 5 AMRF Automated Manufacturing Research Facility AMS Amplitude Modulation Suppression AMS AT&T Message Service AMS ATM Main Switch AMS Audiovisual and Multimedia Service AMS AudioVisual Multimedia Service AMSAT Radio AMateur SATellite corporation AMSC American Mobile Satellite Corporation AMSRID Authorized Message Service Identification AMSS Aeronautical Mobile Satellite Service AMT Address Mapping Table AMT Advanced Manufacturing Technique AMT Ameritech Amt Amount AMTA American Mobile Telecommunications Association AMTICS Advanced Mobile Traffic-Information AMTOR AMateur Over Radio AMTS Automatic Mobile Telephone System AMU Antenna Matching Unit AMVFT Amplitude Modulation Voice Frequency AMVSB Amplitude Modulation with Vestigial AM-VSB Amplitude Modulation-Vestigial Sideband AMW Automatic Message Waiting AMWN Audible Message Waiting Notification AMX ATM Multiplexer AN Access Network AN Access Node AN America's Network (periodical) AN Announcement Machine AN Annunciator AN Application Note AN ISO country code for Netherlands Antilles an power level ANA Article Numbering Association ANA Assigned Night Answer ANA Automatic Number Announcer ANAL ANALogue ANALIT Analysis of Automatic Line Insulation Tests ANBFM Adaptive Narrow-Band FM Modem ANC Active Noise Cancelation ANC All Number Calling ANC Answer Charge message ANC Answer Complete ANC ANswer signal, Charge ANC Answer, Charge signal ANC Area Number Calling ANCM Access Node Configuration Manager AND Abbreviated Number Delivery AND Automatic Network Dialing AND Logical AND ANDF Architecture Neutral Distribution Format ANDI Anmeldedienst (Enrollment Service) ANDI Logical AND Immediate ANET Asynchronous Network ANF Access Network Function ANF Additional Network Feature ANF Additional Network Features ANF Automatic Number Identification Failure AN-FR AN Frame Relay Function ANG Advanced Networking Group ANI Animated Cursor file ANI Automatic Number Identification ANI7 Automatic Number Identification 7 ANID Active Network Interface Device ANID Adjacent Network Identifier ANIE Associazione nazionale industrie elettrotecniche ed ellettroniche (Italy) ANIEL Associación Nacional de Industria Electronica (Spain) ANIF Automatic Number Identification Fail ANIF Automatic Number Identification Failed ANIF Automatic Number Identification Failure ANIS Analoger Teilnehmeranschluss an ISDN (analog subscriber served by digital local exchange) ANIS Analog-Teilnehmer an DIVO-VSt (analogue subscriber connected to di gital exchange) ANL Automatic Noise Limiter ANLG Analog ANM Advanced NM (Net/Master, IBM) ANM Answer Message ANMS ATM Network Management System ANN Announcement ANN Answer No-Charge message ANN ANswer signal, No charge ANN Answer, No-Charge signal ANNC Announcement ANNS Announcements anot Automatic Notification ANP AAL Type 2 Negotiation Procedure ANP AAL2 Negotiation Protocol ANR Abnormal ANR Automatic Network Routing ANR Awaiting Number Received ANRST Abnormal-and-Restricted ANS Advanced Network & Services, Inc. ANS Advanced Network Systems ANS Advanced Networking Services ANS Alcatel Network Systems ANS American National Standard ANS Answer ANS Answer message ANS Answer signal ANS ATM Name Server ANS Automated Notification System ANSA Advanced Network System Architecture ANSA Advanced Networked Systems Architecture ANSC American National Standards Committee ANSI American National Standards Institute (US) ANSTIM Answer Timing ANT Antenna ANT Application of New Technologies ANTU Analogue Network Termination Unit ANU Answer Unqualified message ANUI AMA Network User Identification ANX Access Node Express ANZCAN Australia-New Zealand-Canada submarine cable AO Abort Output AO Acceptor Operable AO Account Owner AO Alternate Operator AO Answer Only AO Application Object AO Authorizing Origination point in call AO Automated Office AO ISO country code for Republic of Angola AO/DI Always On/Dynamic ISDN AO/S Agents Object System AO3 Add-On Conference- 3-Party AO6 Add-On Conference- 6-Party AOA Angle of Arrival AoC Advice of Charge AOC Advice Of Charge (supplementary service) AOC Aeronautical Operational Control AOC Automatic Overload Control AOC Awaiting Outgoing Continuity AoCC Advice of Charge (Charging) (supplementary service) AoCC Advice of Charge Charging AOC-D Advice of Charge (Service)- During call AOC-D Advice of Charge During the Call AOCE Apple Open Collaboration Environment AOC-E Advice of Charge (Service)- at End of call AOC-E Advice of Charge at the End of the Call AoCI Advice of Charge (Information) (supplementary service) AoCI Advice of Charge Information AOCP Additional Original Called Party Number AOCR Automatic Out-of-Chain Routing AOCS Attitude and Orbit Control System AOC-S Advice of Charge (Service)- at call Set-up time AOC-S Advice of Charge at Call Setup Time AODI Always On Dynamic ISDN AOG Alternative Operators Group AOI Active Output Interface AOI Area Of Interest AOL America Online AOL Application Oriented Language AON Active Optical Network AON All-Optical Network AON All-Optical Networking AONALS Type "A" Off-Network Access Lines AOP Annual Operating Plan AOP Attendant Overflow Position AOP Average Occupied Positions AOPL Application-Oriented Parsing Language AOPS Automated Office Protocol Standard AOQ Average Outgoing Quality AOQL Average Outgoing Quality Level AOR Application-Owning Region AOR Atlantic Ocean Region AOR Atlantic Ocean Region () AORG Auto Originate AOS Acquisition Of Signal AOS Advanced Operating System AOS Agents Object System AOS Alternative Operator Services AOS Area of Service AOS Attitude and Orbit control Subsystem AOSS Auxiliary Operator Services System AOSSVR Auxiliary Operator Services System with Voice Response AOTC Australian and Overseas Telecommunication Corporation AOTF Acoustooptic Tunable Filter AOTF Acousto-Optical Tunable Fiber AOTS Advanced Orbital Test Satellite AOTT Automatic Outgoing Trunk Test AOW Asia-Oceania OSI Workshop AOW Asia-Oceania Workshop AOZ Address Complete, Without Additional Information AP Abstract Protocol AP Access Point AP Access Priority (TETRA) AP Access Privilege AP Access Protocol AP Access Provider AP Action Point AP Actionpoint AP Active Approval AP Adjunct Processor AP Administration Processor AP Administrative Point AP Administrative Processor AP Agency Protocol AP Agent Process AP Agent Profile AP Alerting Pattern AP Alternating Projection AP Application Part AP Application Process AP Application Profile (OSI-AL) AP Application Protocol AP Application(s) Processor AP Argument Pointer AP Assemblée Plénière (CEPT, CCIR, CCITT) AP Attendant Position AP&R Automated Prompt and Response APA Active Position Addressing APA All Points Adressable APA All-point Addressable (IBM WS capability for vector graphics) APAB All-Primary/All-Backup APAS Advanced Public Access Solutions APB Adaptive Prediction Backwards APB All Paths Busy APB All Positions Busy APC Access Processor Card APC Adaptive Power Control APC Adaptive Predictive Coding APC Adaptive-Predictive Coder APC Aeronautical Public Correspondence APC Alarm and Power Control APC AMARC Protocol Converter APC American Personal Communications APC American Power Conversion APC Analog Private Circuits APC Application Processor Cabinet APC Application Program Command APC Asia Pacific & CALA DMS-100 APC Asia Pacific Committee APC Asynchronous Procedure Call APC Automated Process Control APC Automatic Phase Control (PLL) APC Automatic Power Control APC Average Power Control APC-AB Adaptive Predictive Coding with Adaptive Bit allocation APCC Asia Pacific Conference on Communications APCI Association Potocol Control Information APCM Adaptive Pulse Code Modulation APCN Asia Pacific Cable Network APCO Association of Public Safety Communications Officials Internationa l APD Automatic Phase Detector APD Automatic Power-Down (IC) APD Avalanche Photo Detector APD Avalanche Photo Diode APD Avalanche Photodiode APDA Apple Programmers' and Developers' Association APDL Algorithmic Processor Description Language APDU Application Protocol Data Unit APDU Application Protocol Data Unit (OSI-AL) APE Abgesetzte Pheriphaere Einheit (Remote Peripheral Unit) APEC Asia Pacific Economic Cooperation APF Adaptive Prediction Forward APG Application Programming Guide APH Actionpoint Handler API Abbreviated Page Index API Advanced Product Information API Application Program Interface API Application Programmer Interface API Application Programming Interface API Application Protocol Interface API Application-Process Invocation API Applications Programming Interface API Asynchronous Pollable Interface API Asynchronous Polling Interface API Attached Processor Interface API/CS API/Communication Services APIA Application Programming Interface Association APIA X.400 API Association for X.400 APIC Advanced Programmable Interrupt Controller APIC Alternate Preferred IC Indicator APIC Alternate Preferred InterLATA Carrier APICI Alternate Preferred InterLATA Carrier Indicator APII Asia/Pacific Information Exchange APK Amplitude Phase Keying APK Amplitude-Phase-Keyed APL A Programming Language APL Advanced Parts List APL Advanced Programming Language APL Advisory Processor Lock APL Analog Private Line APL APpLication APL Average Picture Level (Video) APM Additional Packet Mode bearer service (CCITT I.122) APM Advanced Power Management APM Amplitude Phase Modulation APM Antenna to Partition Mapping APM Application Processor Module APM Application Transport Mechanism APM Application Transport Message APM Audio Processing Module APM Auxiliary Processing Machine APMS Application Penetration Monitoring System APMT Alcatel PMT APN Audio Processing Node APNB All-Primary/No Backup APNG Australia-Papua New Guinea submarine cable APNSS Analogue Private Network Signalling System APOC Advanced Paging Operations Code APOC Advanced POCSAG APOCS Atlantic Provinces Optical Cable System APOK Advanced Programming Object Kit APOLT APON Line Termination APON Asynchronous APON ATM over Passive Optical Network APONT APON Network Termination APP Additional PleniPotentionary conference (ITU) APP Application APP APplication Program APP Application Transport Parameter APP Approved APP Ascend Password Protocol APP Auxiliary Power Plant APPC Advanced Program-to-Program Communications (SNA-LU 6.2) APPL Application APPL Applications milestone APPN Advanced Peer-to-Peer Network (IBM) APPS Advanced Peripheral Processing Solution (National I nc.) APPS Applications APPV Advanced Pay-Per-View APPX Appendix APR Additional (Overtime) Period Rate APR Alarm Processing Remote APR Alternate Path Retry APR Automatic Position Reporting APRICOT Asia Pacific Regional Conference on Operational Technolog ies APRL Average Power Return Loss APROX APPROXimate APS Administrative Processor System APS Advanced Power System(s) APS Advanced Printing Services APS Alarm Processing Subsystem APS Alternate Path Selection APS American Protective Services APS Application Server APS Asynchronous Protocol Specification APS Attached Processor System APS Attendant Pay Station APS Attended Pay Station APS Automatic Protection Switch APS Automatic Protection Switching APS Auxiliary Power Source APS/DP Automatic Protection Switching with Diverse Protection APSB All-Primary/Some Backup APSO Audio Precision System One APSS Automated Procedures Scheduling System APT Address Partition Terminator APT Advanced Parallel Technology APT Advanced Photoscale Technology APT Application Process Title APT Application Systems (Swedish) APT AT&T/Philips APT Automatic Programmed Tool APT Automatic Progression Testing APTU African Postal and Telecommunication Union APU Application Processing Unit APU Arithmetic Processing Unit APU Arithmetic Processor Unit APU Audio Presentation Unit APUX Application Processor Running Unix APX AppExpert Source File APX Autoplex APX10 Autoplex-10 APX-10 Autoplex-10 APX100 Autoplex-100 APX-100 Autoplex-100 APX1000 Autoplex-1000 APX-1000 Autoplex-1000 APZ Control System (Swedish) AQ Autoquote AQ ISO country code for Antarctica AQC Annual Quality Congress AQF Advanced Query Feature AQL Acceptable Quality Level AQL Acceptance Quality Level AQP Association for Quality and Participation AQSE Abstract Quality System Element AQUA Adaptive Quantized Update Algorithm AQUARIUS A Query And Retrieval Intractive Utility System AR Access Rate AR Access Rule AR Action Register AR Action Request AR Activation Request AR Activity Resume AR Address Register AR Allocated Rate AR Alternate Route AR Alternate Routed AR Alternate Routing AR Analysis Report AR Archive Library AR Aspect Ratio AR Audible Ringing AR Automatic Recall AR Awaiting Reply AR ISO country code for Argentine Republic (Argentina) AR U.S. postal code for Arkansas A-R Actual Operators to Required Operators AR1 Alignment Range 1 AR2 Alignment Range 2 ARA Agents for Remote Access ARA Alerting/Registration Area ARA AppleTalk Remote Access ARA Automatic Recall Activate ARA Automatic Resource Assignment ARABSAT ARAB SATellite Communications Organization ARAC Automatic Recall Active/Inactive Status ARACC Automatic Recall Access Codes ARAM Audio RAM ARAM Automatic Recall for Analog Member of EKTS ARAN Automatic Room Authorization Number ARAP Apple Remote Access Protocol ARB All Routes Busy ARB ARBitrary (waveform generator) ARB Architecture Review Board ARB Automatic Recall Billing Records ARC Access Request Channel ARC Access Rights Class arc Action Request Command ARC Adaptive Rate Conversion ARC Administrative Radio Conference ARC Alternate Route Cancel ARC Army Reuse Center ARC Attached Resource Computer ARC Attendant Recall ARC Automatic Reception Control (mono/stereo) ARCC Austrian Remote Cluster Controller ARCH Access Response Channel ARCH Architecture ARCHID Architecture Identifier ARCHNL AMA Remote Channel ARCM Automatic Recall/Callback Currently Active Monitoring ARD Access Rights Details ARD Adaptive RAKE Diversity ARD Arbeitsgemeinschaft der Rundfunkanstalten der Bundesrepublik Deuts chland ARD Automatic Recall Deactivate ARD Automatic Ring Down ARDDN Automatic Recall Dialable Directory Number ARDIS Advanced Radio Data Information Service ARDN Automatic Route Selection Directory Number ARDS AT&T Communications Reference Distribution System ARDS AT&T Reference Distribution System ARDT Automated Radio Deployment Tool ARDT Automatic Recall Date and Time ARDY Asynchronous Ready ARE All Routes Explore ARE All Routes Explorer ARF Abort, Retry, Fail ARF Alarm Reporting Function ARF Alternative Routing From ARF Analog Receiver Filter ARF AT&T Communications Reference Frequency ARF AT&T Reference Frequency ARF Automatic Rate Fallback ARFA Allied Agency ARFCN Absolute Radio Frequency Channel Number ARG Additional Redirecting Number ARG Argument ARI Access Rights Identity ARI Access Rule Index ARI Airborne Radio Instrument ARI Autofahrer-Rundfunk-Information ARI Automatic Room Identification ARI/FCI Address Recognized Indicator/Frame Copied Indicator (MAC/token rin g) ARIA Automatic Recall Invalid Action ARIB Association of Radio Industries and Broadcasting ARIES Agent Related Interaction Enhancements for Services ARINC Aeronautical Radio, Inc. ARIS Aggregate Route-Based IP Switching ARIS Aggregated Route-Based IP Switching ARJ Admission Reject ARL Acceptable Reliability Level ARL Acoustic Reference Level ARL Adjusted Ring Length ARL Audio Reference Level ARL Average Running Length ARLB Automatic Recovery from Low Battery ARLB Automatic Return from Low Battery ARLCN AMA Remote Logical Channel Number ARLL Advanced Run-Length-Limited (magnetic recording code) ARM Advanced RISC Machines ARM Annotated C++ Reference Manual ARM Applications Reference Model ARM Architecture Reference Manual ARM Asynchronous Response Mode ARM Availability, Reliability, Maintainability ARMA Automatic Recall Maximum Allowed ARMAP Adaptive Reservation Multiple Access Protocol ARMIS Automated Reporting of Mechanized Information Systems ARMIS Automatic Recording Management Information System ARN Additional Redirection Number ARN Advanced Remote Node ARN Alternate Route Number ARN Authentication Random Number ARO Alternate Route on Overflow ARO Audio Receive Only ARP Address Resolution Protocol (TCP/IP-DoD) ARP Autonomous Reuse Partitioning ARPA Advanced Research Projects Agency ARPAnet Advanced Research Projects Agency Network ARPL Adjust RPL Field (80x86 inst) ARPOSE Specification de l'ARchitecture et des Protocoles OSI permettant d e rendre le services ARQ Admission Request ARQ Automatic Repeat Request ARQ Automatic Request for Repeat ARQ Automatic Request for Retransmission ARQ Automatic Retransmission Request arr Action Request Report ARR Attributes for Representing Relationship ARR Automatic Rerouting ARRC Advanced Radiodata Research Centre ARRE Alarm Receiving and Reporting Equipment ARRL American Radio Relay League ARS Action Request System ARS Action Response System ARS Active Root Service ARS Alarm Reporting System ARS Ameritech Reconfiguration Service ARS Automatic Route Selection ARS Automatic Route Selector ARSB Automated Repair Service Bureau ARS-D Automatic Route Selection-Deluxe ARSP Automatic Route Selection Pattern ARSQ Automatic Route Selection Queuing ART Alternative Routing To ART Amplitude Radio Transmission ART Audible Ringing Tone ART Audit Report Task ART Automated Reasoning Tool ART Automatic Recall Toggle ART Automatic Reporting Telephone ARTA Apple Real Time Architecture ARTE ARTE Alpha Run Time Environment ARTEMIS Advanced Research and Technology Mission ARTHUR Automatic Radiocommunication system for Traffic emergency situations on Highways ARTIC A Real-Time Interface Coprocessor ARTO Automatic Recall Time Out ARTOB Transponder On Balloon ARTS AIN Response Translation Simplification ARTS American Radio Telephone System ARTS ARSnet Router Traffic Statistics ARTYPE Automatic Recall Reactivation Type ARU Alarm Relay Unit ARU Analog Radio Unit ARU Application Resource Unit ARU Audio Response Unit ARU Automated Response Unit arv Action Request View ARW Automatic Wide AS Abstract Service AS Access Signaling AS Access Switch AS Access System AS Active Service AS Activity Start AS Address Signal AS Address Strobe AS Administrative System AS Affects AS Alignment Signal AS As Anschluss (Access Unit/Extension) AS Answer Supervision AS Application Selection AS Application Supervisor AS Application System (IBM) AS Area Selection (TETRA) AS Assisted Service AS Association Specification AS Authentication Server AS Autonomous System AS ISO country code for American Samoa AS Start of Answer AS/400 Application System/400 AS/LIDB LIDB Administrative System AS/SYS Access and Storage System AS/U Advanced Server for UNIX ASA Addressable Service Area ASA Adjunct Software Architecture ASA Advanced SCSI Architecture ASA American Standard Association (ANSI today) ASA II Advanced SCSI Architecture II A-SAE ASE Service Alteration Element ASAI Adjunct/Switch Application Interface ASAP Accelerated Speech Application Programming ASAP As Soon As Possible ASAP Automated Software Change Approval Passport ASAP Automatic Self-Allocating Processor (Convex Inc. Super Comp.) ASAP Automatic Service Activation Program ASB Automatic Speed Buffering ASBH Average Season Busy Hour ASBHCA Average Season Busy Hour Call Attempts ASBHCC Average Season Busy Hour Call Completions ASBR Autonomous System Boundary Router ASC Abnormal Station Code ASC Accredited Standard(s) Committee ASC Active Service Component ASC Active Signal Correction ASC Advanced Scientific Computer ASC AIN Switch Capabilities ASC American Satellite Corporation ASC Any Switch Company ASC Application Service Centres ASC Authorized Support Center ASC Automatic Sensitivity Control ASC Automatic Sequence Control ASC Available Spare Capacity ASC X3 Information Technology of Information Technology Industry Council (ITI) (formerly CBEMA) ASCC Advanced Software Construction Center ASCI Advanced Speech Call Items ASCII American Standard Code for Information Interchange ASCOT Assessment of Systems and Components for Optical Telecommunication s ASCR Asymmetric Silicon Controlled Rectifier ASCS Alarm Sending and Checking System ASD Answer Signal Delay ASD Answer Supervision Delay ASD AutoSave Document File ASDA Advanced Silence Detection Algorithm ASDE Airport Surface Detection Equipment ASDP Alternative Software Delivery Program ASDS ACCUNET Spectrum of Digital Services ASDS ACCUNET Switched Digital Service ASE Active Service Element ASE Amplified Spontaneous Emission ASE Application Service Element ASE ATM Switching Element ASEAN Association of South East Asian Nations ASEANIS ASEAN Indonesia-Singapore submarine cable ASEANPS ASEAN Philippines-Singapore submarine cable ASEM Air System Element Manager ASEQ Allocation Sequence Number ASEQ Ascending Sequence ASET Adaptive Sub-band Excitation Transform ASF Active Streaming Format ASF Administrative Storage Facility (NAA-DSA-Bull) ASF Application Support Function ASF Aspect Source Flag ASF Association Framework ASF Automatic Sheet Feeder ASFB Application Specific Functional Block ASG Abstract Service Group ASG Applications Support Group ASG Ascend Signaling Gateway ASHE A Simple HTML Editor ASHRAE American Society of Heating, Refrigerating, and Air-Conditioning E ngineers ASI Alternate Space Inversion ASI Ameritech Services, Inc. ASI Application Software Interface ASIC Application-Specific Integrated Circuit ASIM Application Specific Integrated Module ASIM Asynchronous/Synchronous Interface Module ASIP Ameritech Service Improvement Program ASIS Application-Specific Integrated Sensor ASK Accessing Software Knowledge ASK Amplitude Shift Keying asl above sea-level ASL Adaptive Speed Leveling ASL Agent Status Lamp ASL Analog Subscriber Line ASL Arithmetic Shift Left ASLIP Abbreviated Serial Line Internet Protocol ASLM Apple Shared Library Manager ASLT Advanced Solid Logic Technology ASM Abstract Service Module ASM Abstract Syntax Machine ASM Address Space Manager ASM Analog Station Module ASM Assembler ASM Assembly Language ASM Assembly Language File ASM Association Mode ASM ATM Service Multiplexer ASM ATM Switched Services Module ASM ATM Switching Module ASMA Asynchronous Serial Manchestercode Adapter ASMC Advanced Manufacturing Company ASMDR Advanced Station Message Detail Recording ASME American Society of Mechanical Engineers ASMM ATM Service Management Module ASMP Asymmetric Multiprocessing ASMS Advanced Service Management System ASMS Advanced Strategic Missile System ASN Abstract Syntax Notation ASN Access Stack Node ASN Actual Slot Number ASN Alcatel Submarine Networks ASN ATM Service Node ASN ATM Switching Network ASN Authentication Sequence Number ASN.1 Abstract Syntax Notation n° 1 (ITU/ISO) ASN-1 Abstract Syntax Notation One A-SNE ASE Service Notification Element ASO Application Service Object ASO Automatic Service Observing ASOG Access Service Order Guidelines ASOS Advanced Services Operations System ASP Abstract Service Primitive ASP Access Service Provider ASP Access Signal Processor ASP Active Server Page ASP Advanced Services Platform ASP Agent Service Participant ASP Alternate Service Provider ASP Application Service Part ASP Application Signalling Processor ASP Application Software Package ASP Application Specific Parameter ASP Asia-South Pacific ASP Assignment Source Point ASP Association of Service Providers ASP Association of Shareware Professionals ASP Auxiliary Service Position ASPA AMA Specialized Processing Application ASPEC Audio Spectrum Coding ASPI Advanced SCSI Programming Interface ASPI Advanced SCSI Protocol Interface ASPI Atlanta Signal Processors, Inc. ASPR Automated Split-Referral ASPS Accounting Statistical Processing System ASPS Accounting Statistics Processing System ASPS Advanced Space Processor Subsystem ASQ Active Service Queue ASQ Automated Status Query ASQC American Society for Quality Control ASR Abstract Test Suite Selection Rules ASR Access Service Request ASR Adaptive Sample Rate ASR Address Space Register ASR Alarm State Request ASR Always-Start-from-Root ASR Answer/Seizure Ratio ASR Answer-to-Seizure Ratio ASR Arithmetic Shift Right ASR Automatic Send/Receive (TTY) ASR Automatic Set Relocation ASR Automatic Speech Recognition ASR Automatic Standard Recognition (television) ASRAM Application-Specific Random Access Memory ASSET Advanced Switchable Signaling and Echo-Canceler Terminal ASSI Alias Short Subscriber Identity (TETRA) AST Abstract Syntax Tree AST Activity Switch Timer AST Advanced Screen Telephony AST Advanced Screen-based Telephony AST Advanced Systems & Technology AST Alaska Standard Time AST Anti-Sidetone AST Asynchronous Service Trap AST Asynchronous System Trap AST Atlantic Standard Time AST Automatic System Testing AST/SYS Access, Storage, and Transfer System ASTA Areas of Service State ASTAP Advanced STatistical Analysis Program ASTI At Some TIme ASTM American Society for Testing and Materials ASTP Advanced Systems and Technology Programme ASTRA Automated Service and Trouble Report Analysis ASTTL Advanced Schottky Transistor-Transistor Logic ASU Acknowledgement Signal Unit ASU Application Specific Unit ASU ATM Service Unit ASVD Analog Simultaneous Voice and Data ASW All Seems Well ASX ATM Switch Module ASYNC Asynchronous AT Abstract Terminal AT Access Tandem AT Access Terminal AT Access Termination AT Advanced Technology AT Alternate Time AT Answer Timing AT Attention AT Attenuation AT Austria Telecom AT Austria Telecommunication AT Automated Testing at Internet country code for Austria AT ISO country code for Republic of Austria AT&T American Telephone and Telegraph AT&T American Telephone and Telegraph Company AT/SSP Access Tandem/Service Switching Point AT/SYS Access and Transfer System ATA Adaptive Transform Audio coding ATA Address Translation Agent ATA Analog Terminal Adapter ATA Analogue Terminals and Access ATA AT Attachment Interface ATA Automatic Trouble Analysis ATA-2 AT Attachment Interface-Second Edition ATAC Adaptive Transformation Audio Coding ATACS Automated Test and Administration Control System ATAF ATM Test Access Function ATAPI AT Attachment Packet Interface ATB Address Translation Buffer ATB All Trunks Busy ATBA Automatic Test Break and Access ATBS Attendant Busy Treatment ATC Abstract Test Case ATC Access Tandem to Carrier ATC Access To Carrier ATC Adaptive Transform Coding ATC Address Translation Cache ATC Advanced Technology Center ATC Air Traffic Control ATC ATM Layer Transfer Capability ATC Auto Tune Combiner ATC Automated Test Case ATC Automatic Threshold Control ATC Automatic Time and Charges ATC Automatic Timing Control ATCC Advanced Test Control Center ATC-HS Adaptive Transform Coding Harmonic Scaling ATCP Ameritec Traffic Control Program ATCP AppleTalk Control Protocol ATCP CI ATCP Command Interpreter ATCRBS Air Traffic Control Radar System ATD Access Tandem Domestic ATD Asynchronous Time Division ATD Asynchronous Time Division (multiplex) ATD ATM Traffic Descriptor ATD Audio Tone Detection ATD Audio Tone Detector ATDB Active Terminal Data Block ATDE Adaptive Time Domain Equalization ATDE Adaptive Time Domain Equalizer ATDM Asynchronous Time Division Multiplex ATDM Asynchronous Time Division Multiplexing ATDM Asynchronous Time-Division Multiplexed ATDMA Advanced TDMA Mobile Access ATDN Advanced Technology Demonstration Network ATDNet Advanced Technology Demonstration Network ATDT Terminal Attach/Detach ATE ATM Terminating Equipment ATE Automated Test Environment ATE Automated Test Equipment ATE Automatic ATE Automatic Test Equipment ATeam Architecture Team ATEC Authorized Technical Education Center ATEL Advanced Television Evaluation Laboratory ATF Advanced Tactical Fighter (United States Air Force) ATF Analog Transmitter Filter ATG Air-to-Ground ATG Applied Technology Group ATG Automatic Test Generator ATHB Active Terminal Header Block ATI Access Tandem International ATI Alarm Trouble Indicator ATIM Ad Hoc TIM ATIS Alliance for Telecommunications Industry Solutions ATIS Automatic Terminal Information Service ATK Andrew Toolkit ATL ActiveX Template Library ATL Advanced Technology Laboratory ATL Atlanta ATLAS Abbreviated Test Language for All Systems ATLAS Abbreviated Test Language for Avionics Systems ATLS Automatic Test Load Simulator ATM Abstract Test Method ATM Adobe Type Manager ATM Advanced Testing Methods (former ETSI TC, now MTS) ATM Alternative Test Method ATM Asynchronous Time Multiplexing ATM Asynchronous Transfer Mode ATM ATM Sublayer ATM Austrian Trunk Module ATM Automatic Teller Machine (Bancomat) ATM Autovon Trunk Module ATM25 25 Mbps ATM Physical Layer ATMARP Asynchronous Transfer Mode Address Resolution Protocol ATM-ARP ATM Address Resolution Protocol ATME Automatic Transmission Measuring Equipment ATMF ATM Forum ATM-F ATM Forum ATML Advanced Telecommunications Modules Ltd. ATMM ATM Management ATM-NM ATM Network Management ATMOS ATM Optical Switching ATMP Ascend Tunnel Management Protocol ATMR Asynchronous Transfer Mode Ring ATMR ATM Ring ATMS Advanced Text Management System ATMS Automatic Transmission Measurement System ATMS Automatic Transmission Measuring System ATN Attendant ATN ATtentioN (IEEE-488 bus signal) ATO Advanced Technology Offering ATO MDII: Address Complete Timeout ATOC Automated TUSA Operator Console A-TO-D Analogue-to Digital ATOM Announcements, Tones, and Occurrences Team ATOMICS Advanced Traffic Observation and Management Information Collecting System ATP Acceptance Test Plan ATP Acceptance Test Procedure ATP Access Transport Parameter ATP Advanced Technology Program ATP Advanced Telecommunications Program (of LLNL) ATP Advanced Token Parser ATP Alarm Termination Paddle card ATP All Tests Passed ATP Automated Trunk Provisioning ATP Automatic Test Processor ATPC Adaptive Transmit Power Control ATPC Alarm Termination Paddle Card ATPC Automatic Transmit Power Control ATPG Automatic Test Pattern Generation ATPG Automatic Test Pattern Generator ATR Advanced Telecommunications Research Institute ATR Alcatel Telecommunications Review ATR Answer to Reset ATR Answering Time Recorder ATR Anti-Transmit-Receive tube ATR Audio Tape-Recorder ATR Automatic Tape Reader ATR Automatic Transmitter ATR Automatic Trunk Routining ATRC Advanced Television Research Consortium ATRC Alternate Terminating Restriction Code ATRS Automatic Trouble Reporting System ATS Abstract Test Suite(s) ATS Activity Tracking System ATS Administrative Terminal System ATS Advanced Telecom Services ATS Air Traffic Services ATS Alternate Through Stream ATS Applications Technology Satellite ATS Asynchronous Time Sharing ATS Automatic Test System ATSC Advanced Television Systems Commission ATSC Advanced Television Systems Committee ATSC Australian Telecommunication Standardization Authority ATSC Australian Telecommunications Standardization Committee ATSI Alias TETRA Subscriber Identity ATSI American Telecommunications Standards Institute ATSS Americas Telecommunications Standards Symposium ATT Active Transaction Table ATT Advanced Traffic Telematics ATT American Telephone and Telegraph Company ATT AT&T Technology (periodical) ATT Attach ATT Attendant ATT Attended Public Telephone ATT ATTenuator ATT Automatic Toll Ticketing ATT Automatic Trunk Testing ATT (flag) ATTach ATTC Advanced Television Test Center ATTC Automatic Transmission Test and Control ATTCOM AT&T Communications ATTD Avalanche Transit Time Diode ATTF Automatic Toll Ticket Facilities ATTH ATM-To-The-Home ATTI AT&T International ATTIND Attendant Access Code ATTIS AT&T Information Systems ATTIX AT&T ATTJ AT&T Technical Journal ATTN Attention ATTN ATTenuatioN ATTR Attributes ATTRCLF Attendant Recall After Flash ATTT AT&T Technologies ATTT AT&T Technology (periodical) ATTY Administrative TTY ATU ADSL Terminal Unit ATU ADSL Transmission Unit ATU Analog Test Unit ATU Antenna Tuning Unit ATU-C ADSL Terminal Unit- Central Office ATUG Australia Telecommunications User Group ATUP Australian Telephone User Part ATUR Automatic Telephone Using Radio ATU-R ADSL Terminal Unit- Remote ATURS Automatic Traffic Usage Recording System ATV Advanced Television ATV ATV Automated Test Vehicle ATVA American Television Alliance ATX Audiotext ATX Automatic Telex Exchange AU Access Unit AU Adaptation Unit AU Administrative Unit AU Alternate Use AU Answer Unit AU Application Unit AU Arithmetic Unit AU Autonomous au Internet country code for Australia AU ISO country code for Commonwealth of Australia AU-3 Administrative Unit-Level 3 AU-4 Administrative Unit-Level 4 AUAP Accelerated Unified Approval Procedure (ETSI) AUC Authentication Center AuC Authentication Centre AUCD Authorization Code Digits AUD AUDible AUD Audit AUD Automatic Dial AuDID Audit Data Identifier Audix Audio Information Exchange System AUDR Audible Ring AUDT Audit AUG Administrative Unit Group AUI Administration User Interface AUI ASE/USA Interface AUI Attachment Unit Interface AUI Attachment Unit Interface (IEEE 802.3) AUIS Andrew User Interface System AUL Automatic Line AUMA Autonomous-and-Management AU-n Administrative Unit-Level n AUP Acceptable Use Policy AUP Administrative Utility Programs (NAA-DSA-Bull) AUP Appropriate Use Policy AUPI Administrative Utility Programmatics Interface (NAA-DSA-Bull) AURP AppleTalk Update Routing Protocol AURST Autonomous-and-Restricted AUSPAC Australian Packet Switching Network AUSTEL Australian Telecommunications Authority AUSTEL AUStralian TELecommunications industry AUT Access Upsizing Tools AUT Authentication AUT Authorised AUT AUThority AUT(H) AUThentication AUTC Authentication AUTEL Asociación de Usuarios de TELecomunicaciones (E) AUTH Authentication AUTH Authorization and Account Codes AUTH Authorization Codes AUTH_KEY AUTHentication function identifier AUTH_NO AUTHentication function to be used AUTH_PREF PREFerred CPP AUTHentication function AUTH_REQ AUTHentication REQuest Information Element AUTH_RES AUTHentication RESponse Information Element AUTH2_REQ Alternative AUTHentication REQuest Information Element AUTH2_RES Alternative AUTHentication RESponse Information Element AUTHAMA Authorization Code AMA AUTO Automatic AUTODIN Automatic Digital Network AUTODISP Automatic Display AUTOVON Automatic Voice Network AUTZ Authorization Code AUU ATM User-to-ATM User Indication AUU ATM-User-to-ATM-User information AUUSIX Acceptance of User-to-User Signaling from an Interexchange Carrier AUVAL Authorization Code Validation AUX AUXiliary AUXP AUXiliary Pattern AV Anti-Virus AV Application Version AV Association Validator AV ATM-VME Adaptor AV Audio/Visual AV AudioVision AV Audiovisual AV Authenticity Verification AV Autovon AV Available AV1 ATM-VME Adaptor, Type 1 AVA Attribute Value Assertion AVC Audio for Video-Conferencing AVC AudioVisual Connection AVC Automatic Volume Control AVCS Advanced Vidicon Camera System AVD Alternate Voice/Data AVD Alternating Voice and Data AVD Audio/Video Driver AVDP Advanced Video Display Processor AVDS Advanced Voice Design System AVDU Audiovisual Display Unit AVEC Auxiliary Video Extension Connector AVG Average AVI Audio Video Interleave (multimedia format) AVI AudioVisual Information AVI Automatic Vehicle Identification AVIOS American Voice Input & Output Society AVIS Audio-Visual Interactive Service AVJ Adaptive Virtual Junctor AVK Audio-Video Kernel AVL Adelson-Velskii and Landis AVL Application Version List AVL Audio/Video Library AVL Available AVLSI Advanced Very Large Scale Integration AVM Audio Visual Management AVMMS Audio Visual Multimedia Services AVMMS AudioVisual/MultiMedia Services (TSAG:ITU-TS) AVO Audiovisual Object AVON AUTOVON AVP Advanced VLSI Packaging AVP Assistant Vice-President AVP Attribute Value Pair AVP Automation Verification Prime AVP AUTOVON Precedence Level AVPN ATM Virtual Private Network AVPS Audio Visual Protocol Stack AVR Audio Visual Research AVR Automatic Voltage Regulation AVR Automatic Voltage Regulator AVR Automatic Volume Recognition AVS Advanced Voice Services AVS Application View Set AVS Application Visualization System AVS Audio and Visual Services AVS Audio/Video Server AVSS Audio/Video Support System AVSS Audiovisual Subsystem AVSSCS Audio-Visual Service Specific Sublayer aVSt aufnehmende Vermittlungsstelle (Take-up exchange for foreign conne ction) AVT AUTOVON Termination AVX ATM-VME Adaptor AVx ATM-VME Adaptor, Type x AW Addison-Wesley AW Administrative Weight AW ISO country code for Aruba AWA A W & Associates AWACS Airborn Warning And Control System (military avionics) AWALA Advanced Architectures and Lead Applications AWC Area-Wide AWCDM Adaptively Weighted Code Division Multiplexing AWG American Wire Gauge (system for specification of wire diameter) AWG Arrayed Waveguide Grating AWGN Additive White Gaussian Noise a-wire A-wire of the two wire PSTN line awk Aho, Weinberger, and Kernighan AWL Addison-Wesley Longman AWRAP Automated WRAP AXM ATM Multiplex Module AXM ATM Multiplexing Module AXS Application Transfer Service AXU Alarm Cross-Connect Unit AXU Auxiliary Cross-Connect Unit AYT Are You There? AZ AZimuth AZ ISO country code for Azerbaijan AZ U.S. postal code for Arizona AZC All-Zeroes Code AZ-EL AZimuth-Elevation back to top|0-9|A - B - C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

B Bearer B Bearer channel B Bidirectional (frame) B Billion B Binary B Blue B Bold (HTML tag) b BOOL (int) B Bridge (link) B Bug b b-wire of the two wire PSTN line B Byte B Interpolative (Between) B channel Traffic channel (64 kbit/s; 32 kbit/s in CT2) B&C Billing and Collections B&W Black and White B/G Battery and Ground b/s Bits per Second B/W Black/White B/W Bothway b1 b-wire connection at the TE input line b2 b-wire connection at the output port of a series-connected TE B3ZS Bipolar with 3 Zeros Substitution B6ZS Bipolar with 6 Zeros Substitution B8RZ Bipolar violations every 8th pulse, Return to Zero B8ZS Bipolar with 8 Zeros Substitution B911 Basic 911 Emergency Service BA Asynchronous Balanced Mode BA Basic Access BA Basic Algorithm BA BCCH Allocation BA Bell Atlantic BA Bridger Amplifier BA Broadcast Control CHannel Allocation BA Buffer Allocation BA Bus Arbitration BA Bus Available BA ISO country code for Bosnia and Herzegovina BaAs Basisanschluss (Basic Access) BAB Basic Automation Board BABS Blind Approach Beacon System BABT British Approval Board for Telecommunications BAC Balanced Asynchronous Class (HDLC) BAC Billing and Collection BAC Block-Acknowledged Counter BAC Buffer Address Counter BAC Bus Access Circuit BAC Bus Access Controller BACN Bank ACount Number BACP Bandwidth Allocation Control Protocol BACT Advisory Committee on Telecommunications of Small Businesses (UK) BAD BRI Agent Decoupling BAF Bellcore AMA Format BAF Broadband Access Facilities BAG Circuit Group Blocking Acknowledge message BAGNET Bay Area Gigabit Network BAGS BASS, GSBT, GETAR, Setup BAHAMA Broadband Adaptive Homing Asynchronous Transfer Mode Architecture BAI Border Area Indicator BAIC Barring of All Incoming Calls BAIC Barring of All Incoming Calls (supplementary service) BAK Backup File BAKT Basisanschlusskonzentrator (Basic Access Concentrator) BAL Balance BAL BAtch Length BAL Bearer Channel Allocate BALI Burst Admission Based on Load and Interference BALUN Balanced/Unbalanced BAM Basic Access Method BAM Basic Access Module BAM Bell Atlantic Mobile BAM Block Allocating Map BAMA Beacon-Assisted Multiple Access BAMM Bidirectional Asymmetric Multipoint-to-Multipoint BAN Billing Account Number BAN Boundary Access Node BANCMOS Bipolar Analog CMOS BANCS Bell Administrative Network Communications System BAND OUTWATS Band Numbers BANDIC BAND Interexchange Carrier BANI Bell Atlantic Network Integration BAOC Barring of All Outgoing Calls BAOC Barring of All Outgoing Calls (supplementary service) BAP Bandwidth Allocation Protocol BAP Basic Assembler Program BAP Business Affiliate Program BAPI Barcelona-Pisa Italy submarine cable BAPM Bidirectional Asymmetric Point-to-Multipoint BAPT Bundesamt für Post und Telekommunikation (D) BAPTA Bearing And Power Transfer Assembly BAR Basic Algorithm with Reassignment BARGEN Barcelona-Genoa submarine cable BARO Barcelona-Rome submarine cable BARRIT BARRier Injection and Transit time diode BARS Basic Automatic Route Selection BAS Base Layer BAS BASic BAS Basic Activity Subset (OSI-SL) BAS BASIC File BAS Bearer Channel Associate BAS Bit Allocation Signal BAS Bit Rate Allocation Signal BAS Broadband Access Server BAs Buendelanschluss (Trunk Group/Wire Group) BASAR Building Agents Supporting Adaptive Retrieval BASE Base Layer BASE Basic ASE BASE Broadband ATM/STM Electrical dual bus BASET BASE Type bash Bourne Again Shell BASIC Beginner's All Purpose Symbolic Instruction Code BAsize Buffer Allocation Size BASM Built-in Assembler BASN Block-Acknowledged Sequence Number BASS Basic Session Service BAT Bandwidth Allocation Threshold BAT Batch File BAT Battery BAT Bearer Channel Attribute BAT Bell Atlantic BAT Billing Architecture Team BAT Block Address Translation BAT BRI Architecture Team BATC Block Address Translation Cache BATE Baseband Adaptive Transversal Equalizer BATMOS Bipolar Analog Telecommunications Metal Oxide Semiconductor BATMOS Bipolar Analog Telephony CMOS BATS Bit Access Test System BB BaseBand BB Bluebook BB Bluebox BB Broadband BB ISO country code for Barbados BBA Broadband Access BBC Bearer Channel Break Connection BBC Bjarne's Better C BBC British Broadcasting Corporation (UK) BBC Broadband Bearer Capability BBC Broadband Coupler BBC Broadcast Bearer Control B-BC Broadband Bearer Capability B-BCC Broadband Bearer Channel Connection BBD Bucket-Brigade Device BB-DACS Broadband DACS BBER Background Block Error Ratio BBF Blue Box Fraud BBG Basic Business Group BBG Basic Business Group Identifier BBG Basic Business Group Number BBGDN BBG Intercom Number BBGDP Basic Business Group Dialing Plan BBG-I ISDN Basic Business Group BBGNAME Basic Business Group Name BBGSG Basic Business Group, Subgroup BBGXLAR BBG Digit Collection, Translations, and Routing BBH Bouncing Busy Hour BBI Begin Bracket Indicator (SNA) BBIU Beginning of BIU BBL Backbone Leg BBM Bandwidth Balancing Mechanism BBN Bolt, Beranek, and Newman BBONI Broadband Optical Network Interface BBP Binary Backoff Procedure (CSMA/CD) BBS Bulletin Board Service BBS Bulletin Board System (mailbox) BBSM Basic Bearer State Machine BBT Board to Board Testing BBT BroadBand Technologies BBTG Broadband Task Group BBU Baseband Unit B-BUS Broadcasting Broadcast/Unknown Server BC Backward Congestion Indicator BC Bar Code BC Basic Call BC Basic Control BC Basic Control BC Batch Counter BC Bearer Capabilities BC Bearer Capability BC Bearer Channel BC Bearer Control BC Bearer Controller BC BC Billing Collector BC Binary Checksum BC Bon de Commande BC Broadcast BC Buffer Control (multimedia) BC Bus Controller Bc Committed Burst Size BC Postal code for British Columbia BC++ Borland C++ BC4 Borland C++ 4.0 BC4.5 Borland C++ 4.5 BC5 Borland C++ 5.0 BC5.0 Borland C++ 5.0 BCA Basic Coverage Area BCA B-Channel Availability BCAF Bearer Control Agent Function BCAJ Borland C++ Add-on for Java BCAL Basic Coin Access Line BCAP Basic EKTS Call Appearance BCap Bearer Capability BCB Borland C++ Builder BCC Color Code BCC Base transceiver station (BTS) Colour Code BCC Battery Charge Controller BCC Bearer Channel Connection BCC Bearer Connection Component BCC Bearer Connection Control BCC Bellcore Client Company BCC Bit Character Count bcc Blind Carbon Copy BCC Block Check Character BCC Block Check Code BCC Block-Completed Counter BCC Blocked Calls Cleared BCCD Bulk-Channel Charge-Coupled Device BCCH Broadcast Channel BCCH Broadcast Control Channel BCCIS Bell Canada Circuit Inventory System BCCMS BUNI Command and Control Message Set BCCSS Business Customer Communications Switching Study BCD Binary Coded Decimal BCD Binary Coded Digits BCD Blocked Calls Delayed BCD Booked Call Database BCD/B Binary Coded Decimal/Binary BCD/Q Binary Coded Decimal/Quaternary BCDC Bellcore Corporate Data Contract BCDIC Binary Coded Decimal Interchange Code BCDMA Broadband CDMA BCE Base Station Control Equipment BCE Bell Canada Enterprises BCE Bridged Call Exclusion BCEA Bridged Call Exclusion Activate BCEAM Bridged Call Exclusion for Analog Member of EKTS BCED Bridged Call Exclusion Deactivate BCET Bridged Call Exclusion Toggle BCETYPE Bridged Call Exclusion Type BCF Bandwidth Change Confirmation BCF Bandwidth Confirm BCF Base Station Control Function BCF Bearer Control Function BCF Bridge Control Facility BCF Burst Control Function BCFr Bearer Control Function (Radio) BCG Bell Communications Group BCGD Business Communication Group Digits BCH B-Channel BCH Bearer Channel BCH Bids per Circuit per Hour BCH Binary Coded Hexadecimal BCH Bose-Chaudhuri-Hocquenghem BCH Broadcast Channel BCi Backward Call Indicator BCI Backward Call Indicators BCI Backward Congestion Indication BCI Bearer Control Identifier BCI Begin Chain Indicator (SNA) BCI Bell Canada International BCI Bit Count Integrity BCI BroadCast Interference BCID Bearer Channel Identifier BCIE Bearer Capability Information Element BCK BloCK BCL Base Class Library BCL Base ConLan BCL BroadCast Listener BCLID Bulk Calling Line Identification BCLP Buffer of Copies of Local Packets BCM Basic Call Manager BCM Basic Call Model BCM B-Channel Manager BCM Bearer Channel Manager BCM Bell Cablemedia BCM Benchmark Cost Model BCM Binary Coded Matrix BCM Bit-Compression Multiplexer BCM Buried Coarctate Mesastructure BCMRA B-Channel Common Maintainable Resource Aggregate BCMS Bearer Channel Manager Surrogate BCN Backbone Concentrator Node BCN Beacon BCNI Bearer Capability Not Implemented BCNSP Basic Call Network Service Participant BCNU Be seeing you BCO Battery Cut-Off BCO B-Channel Observer BCO Borrow with Channel Ordering BCOB Broadband Connection Oriented Bearer BCOEDN Bearer Capabilities Per OE/DN BCOR BCO with Reassignment BCOS Business Class of Service BCP Basic Call Participant BCP Basic Call Process BCP Basic Call Processing BCP Best Current Practices BCP Billable Calls Per Hour BCP Binary Communications Protocol BCP Binary Control Protocol (BSC) BCPL Basic Computer Programming Language BCPM Barker Code Position Modulation BCPN Business Customer Premises Network BCR Bearer Channel Rate BCR Bearer Channel Resource BCR Bell Communications Research BCR Block Coding Rate BCR Branch Condition Register BCR Business Communications Review (periodical) BCR Byte Count Register BCR Community Bureau of Reference BCRIS Bell Customer Records Information System BCS Basic Coding Structure BCS Basic Combined Subset (OSI-SL) BCS Batch Change Supplement BCS B-Channel Circuit-Switched BCS Bearer Channel Server BCS Bearer Channel Surrogate BCS Block Check Sequence BCS Block Control Signal BCS Boundary Control Stabilization BCS Branch if Carry Set BCS British Computer Society BCS Bulk Change Software BCS Bulk Change Supplement BCS Bus Control System BCS Business Communication System BCS Business Communications Services BCS-1 Binary Compatibility Specification-1 BCSC Business Customer Service Center BCSM Basic Call State Machine BCSM Basic Call State Model BCSMON BCS Monitor BCSN Block-Completed Sequence Number BCST Broadcast BCT Business Communications Terminal BCT Business Cordless Telecommunications system BCT Business B-CTI Broadband Computer-Telephony Integration BCTP Buffer of Copies of Transit Packets BCTS Broadcasting and Communications Technology Satellite BCU Battery Control Unit BCUG Bilateral Closed User Group BCUGO Bilateral Closed User Group with Outgoing access BCUP Basic Call-Unrelated Process BCUSP Basic Call User Service Participant BCV Basic Call View BCVT BasiC Virtual Terminal (OSI-SASE) BCW Borland C++ for Windows Bd Baud BD BoarD BD Broadband Descrambling BD Buffer Descriptor BD ISO country code for People's Republic of Bangladesh BDAM Basic Direct-Access Method BDC Backup Domain Controller BdC Bon de Commande BDC Borland Developers Conference BDCL Borrowing with Directional Channel Locking B-DCN Backbone Data Communication Network B-DCS Broadband Digital Cross-Connect System BDE Baseband Distribution Equipment BDE Borland Database Engine BDF Baseband Distribution Frame BDF Binary Distribution Format BDF Bitmap Distribution Format BDG BNR Design Group BDH Board Day Hour BDK Beans Development Kit BDLC Burroughs Data Link Control protocol (Burroughs Inc.) BDM Background Debug Mode BDM Background Debug Monitor BDM Bit Demodulator BDN Bell Data Network BDOS Basic Disk-Operated System BDPSK Binary Differential Phase-Shift Keying BDR Bell Doesn't Ring BDR Border Format File BDRA Boot Data Reserved Area BDS Basic Data Service BDS Billing Data Set BDS Broadband Distribution Shelf BDSL Bisymmetric Digital Subscriber Line BDSL Bisymmetrical Digital Subscriber Line BDT Basic Method with Double Transmission BDT Billing Data Tape BDT Billing Data Template BDT Billing Data Transmitter BDT Billing Design Team BDT Bulk Data Transfer BDT Bureau for Telecommunication Development BDT Telecommunication Development Bureau BDTS Bulk Data Transfer Subsystem BDU Baseband Distribution Unit BDV Breakdown Voltage BDW Block Descriptor Word BDW Buried Distribution Wire BE Band Elimination BE Begin-End Tag BE Beschaltungseinheit (Line Unit) (Connection Unit) BE Best Effort BE Big-Endian BE Block Error BE Business Environment Be Excess Burst Size be Internet country code for Belgium BE ISO country code for Kingdom of Belgium BEA Analoge Beschaltungseinheit (Analog Line Unit) BEA Beschaltungseinheit fur Analogen Anschluss (analogue connection un it) BEAMA Federation of British Electrotechnical and Allied MAnufacturers BEC Basic Error Control BEC Basic Error Correction BEC Belgisch Elektrotechnish Comite (B) BEC British Electrotechnical Committee BECM Band-Edge Component Maximization BECN Backward Explicit Congestion Notification BED Beschaltungseinheit fur Digitalen Anschluss (digital connection un it) BED Digitale Beschaltungseinheit (Digital Line Unit) BEDC Block Error Detection Code BEDO Burst Extended Data Out BEE Bachelor of Electrical Engineering BEE Bit Encoding Errors BEF Band Elimination Filter BEF Band Elimination Filter BEG BEGinning BEITA Business Equipment and Information Technology Association (UK) BEL Bell BEL BELl BEL Business Environment Element BELLCORE Bell Communications Research Bellcore Bell Communications Research BEO Bramalea Engineering Office BEOFD Broadband End of Frame Delimiter BEP Back End Processor BEP Building Entry Protector BEP Burst Error Processor BEPI Block Effective Page Index BEQL BITE Entity Query Language BER Basic Encoding Rules BER Basic Encoding Rules BER Bit Error Rate BER Bit Error Ratio BER Bus ERror BERLU Broadband-Enhanced Remote Line Unit BERP Bit Error Rate Performance BERR Bus Error BERT Bit Error Rate Test BERT Bit Error Rate Testing BERT Bit Error Ratio Test BERT Bit Error Ratio Testing BES Basic Encoding Scheme BeSS Bell Laboratories Storage System BEST Base Employee Satisfaction Team BET Black Entertainment Television BET Business Effectiveness Team BEtag Beginning-End Tag BETR Basic Exchange Telecommunications Radio BETRS Basic Exchange Telecommunications Radio Service BEV Bearer Channel Event BEX Broadband EXchange BEXR Basic Exchange Radio BF Best-Fit BF Boundary Function BF Branching Filter BF ISO country code for Burkina Faso BFA Borrow First Available BFC Base Flexible Calling BFC Briefcase file BFCV Binary Facility Coding Value BFD Basic File Directory BFD Battery Failure Detector BFI Bad Frame Indication BFI Basic File Index BFI Brute Force and Ignorance BFMA Block Failure Mode Analysis BFO Beat Frequency Oscillator BFP Basic Format Packet BFP Basic Format Packetization BFP Basic Freephone BFR Back-Face Removal (3-dimensional electronic imaging) BFR Bridged Frequency Ringing BFR BuFfeR BFS Backplane File System BFS Boot File System BFS Breadth-First Search BFSI Broadcast Fixed System Identity BFSK Binary Frequency Shift Keying BFSR Busy-Flash Seizure Ratio BFT Binary File Transfer BFT-NSF Binary-File Transfer- Non-Standard Facilities Frame BFTP Background File Transfer Program BFU Betriebsfuehrungsumsetzer (Operation Converter) BFU Bit-Field Unit BFU Booster Fan Unit BG BackGround BG Battery Ground BG Below Ground BG Billing Group BG Bus Grant BG Business Group BG ISO country code for People's Republic of Bulgaria BG/EEE Below Ground Electronic Equipment Enclosure BG2WAY Business Group 2-Way BGA Ball Grid Array BGAC Business Group Automatic Callback BGCW Business Group Call Waiting BGCWT Business Group Call Waiting BGDP Business Group Dialing Plan BGDP-I ISDN Business Group Dialing Plan BGE Business Group Element BGE-I ISDN Business Group Element BGI Borland Graphics Interface BGID Business Group Identification BGID Business Group Identifier BGIN Business Group Inward BGL Business Group Line BGMAOR Business Group Member Access Originating Restrictions BGMATR Business Group Member Access Terminating Restrictions BGOUT Business Group Outward BGP Border Gateway Protocol BGP4 Border Gateway Protocol 4 BGP-4 Border Gateway Protocol 4 BGTYPE Business Group Type BGU Basic Grid Unit BH Base Register High Half BH Buried Heterostructure (IC Process) BH Busy Hour BH ISO country code for State of Bahrain BHC Basic Half Call BHC Busy Hour Call BHCA Busy Hour Call Attempt(s) BHCC Busy Hour Call Completion BHCV Busy Hour Call Volume BHDT Broadband Host Digital Terminal BHE Bus High Enable BHL Busy Hour Load BHLF Basic High Layer Function(s) BHLI Broadband High Layer Information B-HLI Broadband High Layer Identifier B-HLI Broadband High Layer Information BHMI BaseHMI BHT Begin Hunt BHT Begin-Hunt Terminal BI all Barring of Incoming call services BI Backward Indicator BI Barge-In BI Barring of All Incoming Calls BI Behaviour Inopportune BI Bidirectional BI Bilingual Interface BI Billing Instructions BI Borland International BI Bus Interface BI ISO country code for Republic of Burundi BIAC Business and Industry Advisory Committee (OECD) BIB Backward Indicator Bit BIBR Backward Indicator Bit Received BIBT Backward Indicator Bit Transmitted BIBX Backward Indicator Bit Expected BIC Barring of Incoming Calls (TETRA) BIC Bearer Identification Code BIC BRISC Interrupt Controller BIC Bus Interface Card BIC Bus Interface Controller BICAP BInary CAPacitor BICI BISDN Inter-Carrier Interface BICI Broadband Inter-Carrier Interface B-ICI BISDN Inter-Carrier Interface B-ICI Broadband Inter-Carrier Interface B-ICI Broadband ISDN Inter-Carrier Interface BiCMOS Bipolar CMOS Bi-CMOS Bipolar Complementary Metal Oxide Semiconductor BI-CONF B-ISDN Conferencing BIC-Roam Barring of Incoming Calls when Roaming outside the HOME PLMN count ry (supplementary service) BICS Building Industry Consulting Service BICSF Berkeley/IRCAM/CARL Sound File BID Base IDentity code BIDDS Base Information Digital Distribution System BIDI Bidirectional Display BIDS Borland International Data Structures BIDS Broadband Integrated Distributed Star BIDS Broadband Interactive Data Services BIDTC B-Channel Incoming Default Throughput Class BIF Bus Interface BIFP Base Interface Front-end Processor BIGFET Bipolar Insulated Gate Field Effect Transistor BIH Bureau International de l'Heure BIIS Binary Interchange of Information and Signalling BILBO Built-In Logic Block Observation BILGE Binary Load Generation BILGE Binary Load Image BILL Billing BILLDATS Billing Data System BILLTYP Billing Types BIM Broadcast Information Memo BIM Byte-Interleaved Multiplexer BI-MCAST B-ISDN Multi-Casting BI-MCPP B-ISDN Multiple Connections Point to Point BIMOS Bipolar Metal Oxide Semiconductor Bi-MOS Bipolar Metal Oxide Semiconductor BIMPS B-Channel Incoming Maximum Packet Size BIN Barge-In BIN Bearer Channel Set Integrity BIN Binary bin Binary BIN Business Information Network BINAC BINary Automatic Computer BIND Berkeley Internet Name Domain bing Bandwidth ping BINR Basic Intrinsic Noise Ratio BIO Bit Input/Output BIOP Broadcast Interoperability Protocol BIOS Basic Input/Output Services BIOS Basic Input/Output System BIP Bit Interleaved Parity BIP Breaker Interface Panel BIP-N Bit Interleaved Parity N BIPT Belgium Institute for Posts and Telecommunications (B) BIPV Bit Interleaved Parity Violation BIR Bureau International de la Recuperation B-IR Bell-Independent Relations BIS Bearer Independant Service BIS Border Intermediate System BIS British Imperial measurement System BIS Brought Into Service BIS Bureau of Indian Standards BIS Business Information System BISAM Basic Indexed Sequential Access Method BISCOM Business Information Systems-Communications System BISCUS Business Information System/Customer Service BISDN Broadband ISDN B-ISDN Broadband ISDN BISI Busy/Idle Status Indicator B-ISSI Broadband Inter-Switching System Interface BIST Built-In Self Test BISTSS Business Information System/Trunks and Special Services BISUP Broadband ISDN User Part B-ISUP Broadband ISDN User Part BISYNC Binary Synchronous Communication BISYNC BInary SYNchronous Communication (COP, IBM Inc.) BIT Basic Test(s) BIT Billing Infrastructure Team bit Binary Digit BIT Built-In Test BITBLT BIT Boundary BLock Transfer BitBlt Bit-Block Transfer BITE Backward Interworking Telephone Event BITE BNR Integrated Test Environment BITE Built In Test Equipment BITEL Bildschirm Telefon BITNET Because It's Time Network BITNIC BITNET Network Information Center BITS Building Integrated Timing Source BITS Building Integrated Timing Supply BITS Building Integrated Timing System BIU Base Station Interface Unit BIU Basic Information Unit (SNA) BIU Bus Interface Unit BIX Building Interoffice Crossconnect BIX Byte Information Exchange BJ ISO country code for People's Republic of Benin BJT Bipolar Junction Transistor BK BasK BK Break BKER Block Error Rate BKI Break-In BKWD BacKWarD BL Base Register Low Half BL Betriebslenkung ( regional operations and maintena nce centre) BL Betriebslenkung (Operational Routing) BL Blue Lightning BLA Blocking Acknowledgement signal BLA Blocking Acknowledgment message BLAST Balanced Logic Asynchronous Synchronous Transceiver Chip BLAST Blocked Asynchronous Transmission BLC Billing Collector BLC Buffer Location Counter B-LCSE Bidirectional Logical Channel Signalling Entity BLD Binary Load Dump (SPADE) BLD Block of Logical Drawers BLD Build File BLDN Blank Directory Number Treatment BLDNTSP Billing DN Per TSP BLER BLock Error Rate (digital test parameter) BLER Block Error Ratio BLER Block Error Result BLERT Bit-Loss Error Rate Testing BLERT Block Error Rate Test BLERT Block Error Rate Testing BLF Busy Lamp Field BLG Circuit Group Blocking message BLIC Bimos Line Interface Circuit BLID Basic Calling Line ID BLK Block BLKD Blocked BLLF Basic Low Layer Function(s) B-LLI Broadband Low Layer Information BLM Basic Line Monitoring BLM Business Line Management BLM Business Line Manager B-LMI Broadband Local Management Interface BLN Backbone Link Node BLO Blocking message BLO Blocking signal BLOb Binary Large Object BLOS Beyond Line of Sight BLP Bar Line Printer BLP Buffer of Local Packets BLP Bypass Label Processing BLR Bell Laboratories Record BLR Blocking/Unblocking Signal Reception BLS Basic Line Services BLS Block Link Sets BLS Blocking/Unblocking Signal Sending B-LS Broadband-Locking Shift BLSR Bidirectional Line-Switched Ring BLT Block Transfer blt Block Transfer BLTJ AT&T Bell Laboratories Technical Journal BLTJ Technologies Technical Journal BLU Basic Link Unit BLV Busy Line Verification BLV/INT Busy Line Verification/Operator Interrupt BM Basestation Module Bm Bearer-Mobile Channel BM Buffer Memory BM Button Message Bm Full-rate traffic channel BM ISO country code for Bermuda BMA Board Management Agent BMA Broadband Multiple Access BMA Business Maturity Assessment B-MAP B-field MAP BMAS Business Management System BMC Bearer Channel Make Connection BMC Billing Media Converter BMC Broadcast Message Control BMC Burst Mode Controller BMC II Billing Media Converter II BMI Branch if MInus BML Business Management Layer BMLA Burst Mode Link Analyser BMMI Bilingual Man-Machine Interface BMP Basic Multilingual Plane BMP Bearer Channel Monitor Reliability Stop BMP Bitmap BMP Bitmap File BMP Microsoft Windows Bitmap BMPT Bundesministerium (Bundesamt) für Post und Telekommunikation BMS Backup Management System BMS Bandwidth Management Service BMS Bearer Channel Monitor Reliability Start BMS Broadcast Message Server BMS Broadcast Message System BMS Buffer Management System BMSD Business Management System Description BMSM BMS Manager BMU Basic Measurement Unit BMU Battery Management Unit BMU Bit Manipulation Unit BN Backward Explicit Congestion Notification BN Basic Numbered BN Billing Number BN Billing Number Records BN Bit Number BN Bonding Network BN Bridge Number BN Button Notification BN ISO country code for Brunei Darussalam BNA Backbone Network Architecture (as opposed to CNA) BNA Billing Name and Address BNA Burroughs Network Architecture BNA Burst Not Acquired BNC Bayonet Neill Concelman BNC Bayonet Nut Connector BNC British National Connector BNCSM Basic Non-Call-Associated State Model BNF Backus-Naur Form BNI Blank Number Intercept BNI Broadband Networks Inc. BNIG Before the Next Interaction Globally BNIL Before the Next Interaction Locally BNK Betriebsfuhrung-Netzknoten (Operations Network Node) B-NLS Broadnand-Non-Locking Shift BNM Bureau de Normalisation de la Mechanique BNM Business Network Management BNMR Business Network Modernization Research BNN Balanced Network Number BNN Bridged Night Number BNQ Burst Not Qualified BNR Bell Northern Research BNR Billing Number Record BNRJ BNR Japan BNS Billed Number Screening BNS Billing Number Selection BNS Broadband Network Services BNS Broadband Networking Services BNS Business Network Services B-NT Broadband Network Termination Equipment B-NT1 Broadband Network Termination- Type 1 B-NT2 Broadband Network Termination- Type 2 BNU Basic Networking Utilities BNV Balance Network Value BNZS Binary N Zeros Substitution BO all Barring of Outgoing call services BO Back Off BO Barring of All Outgoing Calls BO Bit-Oriented BO Branch Office BO Byte Ordering BO Invalid Behaviour BO ISO country code for Republic of Bolivia BO EOC Bit-Oriented Embedded Operations Channel BOA Basic Object Adapter BOAM Bell Owned And Maintained BOC Barring of Outcoming Calls (TETRA) BOC Bell Operating Company BOC Bell Operating Company BOC Build-Out Capacitance BOCP Bellcore Operations System Network Communications Protocol BOD Bandwidth On Demand BOD Battery On Discharge BODTC B-Channel Outgoing Default Throughput Class BOF Beginning Of File BOF Beginning of Frame BOF Birds of a Feather BOI Blind Operator Interface BOIC Barring of Outgoing International Calls BOIC Barring of Outgoing International Calls (supplementary service) BOIC-exHC Barring of Outgoing International Calls except those directed to t he Home PLMN Country (supplementary service) BOL Beginning of Life BOLD Bit-Oriented Line Discipline (SWIFT) BOM Base Operational Measurements BOM Beginning of Message BOM Bill of Materials BOM Bit-Oriented Message BOMMO Base OMMO BOMPS B-Channel Outgoing Maximum Packet Size BOMSIG Business Object Management Special Interest Group BON Better Object Notation BON Business Object Notation BONALS Type "B" Off-Network Access Lines BOND Bandwidth On Demand BONDING Bandwidth On Demand Interoperability Group BONT Broadband Optical Network Termination BOOTP Bootstrap Protocol BOP Bit Oriented Protocol (SDLC/HDLC) BOP Bit-Oriented Protocol BOPS Billion Operations Per Second BOR Beginning of Recording BORAM Block ORiented Random Access Memory BORSCHT Battery Feed, Overvoltage Protection, Ringing, Supervision, CODEC, Hybrid, and Testing BORSCHT Battery Overvoltage Ringing Signalling Coding Hybrid Test BOS Basic Operating System BOS Basic Operation System BOS Bell Operating System BOS Billing Outputs Specifications BOS Build Options Specification BOSS Billing and Order Support Systems BOSS Binary Object Storage System BOSS Binary Object Streaming Service BOSS Broadband Operations Support System BOSS Business Operations Services and Systems BOT Beginning of Tape BOT Build-Operate-Transfer BOT Busy Override Tone BOTM Beginning Of Tape Mark BP Back Plane BP Back Pressure BP Backplane BP Band Pass BP Base Pointer BP Basic Position BP Basic Purpose BP Bearer Path BP Billing Profile BP Block Parity BP Breakeven Point BP Breakpoint BP Burst Period BP Bypass BPAD Binary Synchronous Communication Packet Assembly/Disassembly BPAM Basic Partition Access Method BPB BIOS Parameter Block BPC B Party Control BPC Bearer Path Connection BPC Bilateral Private Circuit BPC Bits Per Character BPC Broadband Processing Card BPCI BellSouth Personal Communications Inc. BPCS Broadband PCS BPD Backplane Driver BPDU Battery Power Distribution Unit BPDU Bridge Protocol Data Unit BPF Band Pass Filter BPF Berkeley Packet Filter bpi Bits Per Inch BPI Bits Per Inch BPI Business Performance Incentive bpi Bytes Per Inch BPKTGP B-Channel Packet Group BPl Bedienplatz (Operator Position) BPM Beats Per Minute BPMCC Borland Presentation Manager Custom Control BPO British Post Office BPON Broadband over Passive Optical Network BPON Broadband Passive Optical Network BPP Billed Party Preference bpp Bits Per Pixel BPP Bridge Port Pair BPP Buffered Pipe Protocol BPR Backplane Receive BPR Business Process Reengineering BPRZ Bipolar Return to Zero BPS Background Processing State BPS Basic Programming Support bps Bits Per Second BPSK Binary Phase Shift Keying (2-PSK) BPSK Binary Phase-Shift Keying BPSN Broadband Packet-Switched Network BPSR Bidirectional Path-Switched Ring BPSS Basic Packet Switched System BPSS Basic Packet Switching Service BPU Bit boundary block transfer Processing Unit BPU Branch Processing Unit BPV Bipolar Violation BPVO Bipolar Violation Overflow BPX Broadband Packet Exchange BQ Broadcast Quality BQ Burst Qualified BQA Broadcast Quality Applications BQPRIV Block Queries for Private Numbers BQRS Bellcore Quality Registration Services B-QSIG Broadband QSIG BR Base Register BR Basic Rate BR Basic Rate access BR Battery Return BR Battery Reversal BR Billing Report BR Bit Rate BR Branch BR Break BR Bridge BR Bus Request BR Byte Register BR ISO country code for Federative Republic of Brazil BR Line Break (HTML tag) BR Radiocommunications Bureau (ITU) BR0 Base Register 0 BR1 Base Register 1 BR2 Base Register 2 BR3 Base Register 3 BRA Basic Rate Access BRA Basic Rate Area BRACAN Brazil-Canary Islands submarine cable BRAFS Basic Rate Access Functional Set BRAG Basic Rate Agency BRAKS Basic Rate Access Key Set BRAM Brampton BRAMFT Basic Rate Access Meridian Feature Transparency BRAN Broadband Radio Access Network(s) BRB Basic Rate Boundary BRB Be right back BRC Bidirectional Trunk Group Reservation Control BRC Bit Rate Converter BRCO Broadband Restoration Control Office BRCS Business and Residence Custom Services BRCS Business and Residential Customer Services BRCX Bit Rate Converter BRDG Bridge BRE Basic Regular Expression BREV Base Relation Evolution BRF Band Rejection Filter BRF Bandwidth Request Field BRF Bell Rings Faintly BRG Baud Rate Generator BRG Bit Rate Generator BRG Bridging BRG Business Research Group BRGSERV Digital Bridging BRH Bureau of Radiological Health BRI Basic Rate Interface (2x64kbit/s+1x16kbit/s) BRI Basisanschluss (Basic Rate Interface) B-RI Broadband-Repeat Indicator BRICM Basic Rate Interface Communications Module BRIDIAG BRI Diagnostics Task BRIFS Basic Rate Interface Functional Signalling BRI-ISDN Basic Rate ISDN BRIMTC BRI Maintenance Task BRISC BNR Reduced Instruction Set Computer BRISC BNR Reduced Instruction Set Computing BRISP BRI Signaling Processor BRISS BRI Service Supervisor BRIT Basic Rate Interface Trunk BRITE Basic Rate Interface Transmission Extension BRITE Basic Research in Industrial Technologies for Europe BRI-U Basic Rate Interface- U-Interface BRIV Basic Rate Interface Verification BRIV-108 Basic Rate Interface Verification, 108-Type Test Line Loopback BRIV-OE Basic Rate Interface Verification, Office Equipment Assignment Ver ification BRJ Bandwidth Change Reject BRJ Bandwidth Reject BRK Break BRKT BRacKeT BRL Balance Return Loss BRLC Broadband Remote Line Concentrator BRM Backward RM-cell BRM Basic Reference Model (=RM OSI) BRND Branding BROM Bipolar Read-Only Memory BROUTER Bridge and ROUTER combination (layer 3 internetworking) BRQ Bandwidth Change Request BRQ Bandwidth Request BRS Base Radio Stack (TETRA) BRS Big Red Switch BRS Block Received Signal BRS Buried Ridge Structure BRSU Broadband Remote Switch Unit BRT BIC Relay Test BRT Business Remote Terminal BRUS Brazil-U.S. submarine cable BRV Backup Recovery Vector BS Back Shift BS Back Space BS Backing Store BS Backspace BS BackSpace (ASCII Character) BS Backward Signaling BS Banded Signaling BS Base Station BS Base Station BS Basic Service (group) BS Basic Session BS Bearer Service BS Block Start BS British Standard (UK) BS Broadcast Satellite BS Broadcasting Satellite BS Broadcasting Service BS Brush Style BS Busy Season BS Button Style BS ISO country code for Commonwealth of the Bahamas BSA Base Station Address BSA Basic Service Area BSA Basic Serving Arrangement BSA B-Channel Selection Algorithm BSA Broadband Services Amplifier BSA Business Software Alliance BSAC Broadcasting Spectrum Advisory Committee BSAM Basic Sequential Access Method BSAP Base Station Application Part BSB BackSpace Block BSB BaSeBand (Radio Repeater) BSC Banctec Service Corp BSC Base Station Controller BSC Binary Synchronous Communication BSC Binary Synchronous Communications BSC Broadband Service Controller BSC Browser Information file BSC Business Service Center B-SC Broadband-Sending Complete BSCA Binary Synchronous Communication Adapter BSCA Busy Second Call Attempt BSCL Common Language BSC-OS Base Station Controller- Operation System BSD Berkeley Software Distribution BSD Berkeley Standard Distribution BSD Busy Disposition BSDB Business Services Database BSDI Berkeley Software Design, Inc. BSDL Boundary-Scan Description Language BSD-LFS BSD Log-Structured File System BSE Basic Service Element BSE Byte Stream Element BSEE Bachelor of Science and Electrical Engineering BSET Business Set BSF BackSpace File BSG Basic Service Group BSG Basic Service Group BSG British Standard Guage BSGDP Business Subgroup Dialing Plan BSGL Branch Systems General Licence (UK) BSGL Branch Systems General License BSH Bourne Shell bsh Bourne Shell BSHR Bidirectional Self-Healing Ring BSHR/2 2-Fiber Bidirectional Self-Healing Ring BSHR/4 4-Fiber Bidirectional Self-Healing Ring BSI Backward Status Indicators BSI Backward Status Information BSI Binary Synchronous Interface BSI Bit Sequence Independence BSI Bit-Stream Information BSI British Standard Institute(ion) (UK) BSI British Standards Institution BSIC Base Station Identity Code BSIC Base transceiver Station Identity Code BSkyB British Sky Satellite Broadcasting BSLT Broadband Subscriber Line Terminal BSM Backward Set-Up Message BSM Base Station Manager BSM Billing Services Management BSM Billing Systems Management BSM Broadband Switching Module BSMM Bidirectional Symmetric Multipoint-to-Multipoint BSMS Base Site Management System BSMS Broadband Service Managent System BSMS Business Service Monitoring System BSN Backward Sequence Number BSN Broadband Service Node BSNR Backward Sequence Number Received BSNT Backward Sequence Number Transmitted BSOD Blue Screen of Death BS-OS The part of the Base Station dealing with the O & M process BSP Bell System Practice BSP Bitsurfer Pro BSP Board Support Package BSP Bootstrap Processor BSPM Bidirectional Symmetric Point-to-Multipoint BSPP Bidirectional Symmetric Point-to-Point BSR BackSpace Record BSR Branch to SubRoutine BSR Broadband Services Receiver BSRF Basic Synchronization Reference Frequency BSRF Bell System Reference Frequency BSRFN Bell System Reference Frequency Network BSRFS Bell System Reference Frequency Standard BSRP Base Station Radio Part (TETRA) BSRS Bell System Repair Specification BSS Base Station Subsystem BSS Base Station System BSS Basic Service Set BSS Basic Session Service BSS Basic Synchronized Subset BSS Basic Synchronized Subset (OSI-SL) BSS Block Started by a Symbol BSS Broadband Switching System BSS Broadcast Satellite Service BSS Broadcasting Satellite Service BSS Business Service System BSSAP Base Station Subsystem Application Part BSSAP Base Station System Application Part BSSGP BSS GPRS Protocol BSSM Basic Service State Machine BSSMAP Base Station Subsystem Management Application Part BSSMAP Base Station Subsystem Mobile Application Part BSSMAP Base Station System Management Application Part BSSMAP BSS Management Part BSSOMAP Base Station System Operation and Maintenance Application Part B-SSP Broadband SSP BST Base Station Transceiver BST Binary Search Tree BST British Summer Time BST Busy Tone BSTJ Bell System Technical Journal B-STP Broadband STP BSTR Basic String BSTS Broadband Series Test System BSU Baseband Switching Unit BSUG Bilateral Closed User Group BSVC Broadcast SVC BSVCI Broadcast Signaling Virtual Channel Identifier BSVR Billing Server BSW Broadcast Services for Windows BSXF Burst Sync Failure (SPADE) BSY Busy BT Bandwidth Time product BT Base Transceiver BT Begin of Tape BT BiT sublayer BT Bit Time BT Bridge Tap BT British Telecom BT Bureau Technique BT Burst Tolerance BT Business Telecommunications BT Business Telecommunications (ETSI TC, later BTC) BT Busy Test BT Busy Tone BT ISO country code for Kingdom of Bhutan BT7 British Telecom Signaling System 7 BTA Basic Trading Area BTA Beijing Telecommunications Administration BTA Broadband Terminal Adaptor BTA Broadcasting Technical Association BTA Broadcasting Technology Association B-TA Broadband Terminal Adapter BTAC BellSouth Technical Assessment Center BTAC Branch Target Address Cache Btag Beginning Tag BTAM Basic Telecommuniactions Access Method (IBM/X.25) BTAM Basic Telecommunications Access Method BTB Branch Target Buffer BTC Broadcast Translation Circuit BTC Business TeleCommunications (ETSI TC, former BT) BTCF Basic Transit Control Function BTDS Bit Transparent Data Service BTE Base Terminating Equipment BTE British Telecommunications Engineering BTE Business Terminal Equipment B-TE Broadband Terminal Equipment BTF Bellcore Technical Forum BTF Binary Transversal Filters BTF Bulk Transfer Function BTI British Telecom International (obsolete) BTI Business Telecom Inc. BTITS Bureau of Telecommunications and Informations Services BTL Bell Telephone Laboratories BTL BT Laboratories BTL Bus Transceiver Logic (National Semiconductor Inc.) BTLD Boot-Time Loadable Driver BTM Bell Telephone Manufacturing BTMA Busy Tone Multiple Access BTN Billing BTNR British Telecom Network Requirement BT-NUP British National User Part BTO Build-To-Order BTO Bulk Translations Output BTP Base Station Transport BTP Buffer of Transit Packets BTP Burst Time Plan BTPC Bus Termination Paddle Card BtPl Betriebsplatz (Maintenance Console) (Operating Position) BTR Behind Tape Reader (system) BTR Billing Trigger Receiver BTR Bit Timing Recovery BTR Blind Transfer Recall BTR British Telecom Requirement BTRI Blind Transfer Recall Identification BTRL British Telecom Research Laboratories BTS Base Transceiver Station BTS Base Transmission Station BTS Burst Time Synchronisation BTSC Broadcast Television Systems Committee BTSM Base Transceiver Station Management BTT Background Telephone Traffic BTTH Broadband To The Home BTTJ BT Technology Journal BTU Basic Transmission Unit (SNA) BTU British Thermal Unit BTUP British Telecom National User Part BTUP British Telecom User Part BTW By the way Btx Bildschirmtext BU Branch Unit BU Branching Unit BU Business Unit BU ISO country code for Burma (obsolete) BUC Context Bundler/Unbundler BUD Bundler, Unbundler and Distributor BUF Buffer BUFR Binary Universal Form for the Representation of Meteorological Dat a BUI Bilingual User Interface BUIC Blocking/Unblocking of Incoming Calls BUID Bus Unit ID Bul Bulletin BUNI Broadband User/Network Interface BUPT Beijing University of Posts and Telecommunications BUS Broadcast and Unknown Server BUS Broadcast/Unknown Server Bus Business BUT BUTton BUUSI Blocking of User-to-User Signaling Interswitch BUUSIX Blocking of User-to-User Signaling to an IXC BUV Backscatter Ultraviolet Spectrometer BV Behaviour Valid BV Busy Verification BV ISO country code for Bouvet Island BVA Billing Validation Administration BVA Billing Validation Application BVA Billing Validation Authority BVC Billing Validation Center BVC Billing Verification Check BVCI Broadcast Virtual Channel Identifier (B-ISDN) BVCP Banyan Vines Control Protocol BVF Billing Validation File BVG Billing Validation Gateway BVL Busy Verification, Lines BVMS Business Voice Messaging Service BVPN Broadband Virtual Private Network BVR Basic Version Receiver BVR Busy Verify BVS Busy Verification, Stations BVSP Borland Visual Solutions Pack BVT Busy Verification Tone BVT Busy Verification, Trunks BVTONE Busy Verification Tone BVW Backward Volume Wave BVW Belleville BW Bandwidth BW Both-Way BW Buried Wire BW ISO country code for Republic of Botswana BWA Bandwidth Allocator BWA Broadband Wireless Access BWCC Borland Windows Custom Controls BWD Backward BwD Bandwidth-Delay BWF B-Word Facility BWG Birmingham Wire Guage BWI Bell-South Wireless Inc. BWM BandWidth Manager BWM Broadcast Warning Message BWP BATC Write Port BWP0 BATC Write Port Register 0 BWP1 BATC Write Port Register 1 BWP2 BATC Write Port Register 2 BWP3 BATC Write Port Register 3 BWP4 BATC Write Port Register 4 BWP5 BATC Write Port Register 5 BWP6 BATC Write Port Register 6 BWP7 BATC Write Port Register 7 BWQ Buzz Word Quotient BWR Bandwidth Ratio BWSC Broadband Wireless Switching Center BX Base register BxZS Bipolar xth Zero Substitution BY Busy by BYTE (unsigned char) BY ISO country code for Belarus (formerly Byelorussia) BY/DA Busy/Don't Answer BYP BYPass BZ ISO country code for Belize BzA Bereitstellung zur Abnahme (DBPT acceptance testing) BZT Bundesamt für Zulassungen in der Telekommunikation (D) BZV Befristeter Zaehlvergleich (Charging Verification Service) back to top|0-9|A|B - C - D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

C Call C Capacitance C Capacitance C Capacitor C Carry C CCR Service C Celsius c centi (10-2) C Central side C Centrigrade C Changed c char C Character C Clock C Closed C Command C Concatenated c Concatenated C Conditional C Connect C Constructed C Container C Control C Control field C Copyright C Core (Computing Module) C Cost C Coulomb C Cross (link) C Cyan C Frame-Copied C&D Control and Display C&I Commissioning and Installation C&I Control and Indication C&M Conferencing and Messaging C&MA Construction and Maintenance Agreement C&P Chesapeake and Potomac (Telephone Co.) C&S Card and Socket C&W Cable & Wireless C&NI Communication & Networking of Information C&S Control & Switching functions C/C Cell Controller C/D Charge-Discharge C/D Control and Display C/D Critical Dimension C/I Carrier to Interference ratio C/L ConnectionLess C/N Carrier to Noise Ratio C/O Connection-Oriented C/R Challenge/Response pair (TETRA) C/R Command/Response C/R Command/Response field bit C/S Client/Server C/T Carrier power to noise Temperature ratio C/T Carrier to Noise Temperature Ratio C/WS Cost per Work Second C-11 Container-Level 11 C-12 Container-Level 12 C2 Command and Control C-2 Container-Level 2 c2d Code to Documentation Tool C3 Command, Control and Communications C-3 Container-Level 3 C3I Command, Control, Communications, and Intelligence C3Q Coverage, Capacity and Quality versus Cost C-4 Container-Level 4 C4I Command, Control, Communications, Computers, and Intelligence C6TU CCS6 Test Utility C7 CCITT Common Channel Signaling System No. 7 C7FPG CCS7 Functional Parameter Group C7TD CCS7 Test Driver C7TU CCS7 Test Utilities C7UP CCS7 ISUP CA Cable CA Cache Alignment CA Call Accepted CA Call Announcer CA Call Appearance CA Call Attempt CA Capability CA Carrier Agent CA Cell Allocation CA Central Agent CA Certification Authority CA Certifying Authority CA Circuit Assigned CA Cluster Alpha Tested CA Collision Avoidance CA Communication Adapter CA Community Address CA Competitive Analysis CA Component Architect CA Computer Animation CA Computer-Aided CA Conditional Access CA Connection Agent CA Conseil d'Administration CA Content Alignment CA Control Agent CA Customer Access CA Customer Administration ca Internet country code for Canada CA ISO country code for Canada CA U.S. postal code for California CAA Civil Aviation Authority CAAC Customer Administration of Authorization Codes CAAFRL Customer Administration of Alternate Facility Restriction Levels CAAR Cache Address Register CAB Cabinet CAB Cabinet file CAB Customer Advisory Board CABOP Call Management System Automatic Recall Blocking to Private Number s CABS Carrier Access Billing System CAC Call Accept CAC Call Admission Control CAC Carrier Access Code CAC Centralized Arbitration Control CAC Commercial Action Committee (CEPT) CAC Connection Admission Control CAC Customer Access Connection CACE Carrier Access Code Error Treatment CACH Call Appearance Call Handling CACI Communication Automation and Control, Inc. CACM Communications of the ACM (periodical) CACP Central Arbitration Control Point CACR Cache Control Register CACRL CAs CRL CACS Centralized Alarm and Control System CAD Call Acceptance Delay CAD Call Authorised by Dispatcher (TETRA) CAD Card Accepting Device CAD Computer-Assisted (aided) Design CAD Computer-Assisted Dialing CAD Connected-Address Display CAD/CAM Computer-Aided Design and Manufacture CADA Compact Asynchronous Data Adapter CADAM Computer Augmented Design and Manufacturing CADCAM Computer-Aided Design and Computer-Aided Manufacture CADCS Call Attempt Data Collection Services CADCS Call Attempt Data Collection System CADD Computer Aided Design and Drafting CADD Computer Aided Detector Design CADDIA Cooperation in Automation of Data and Documentation for Imports/ex ports and management and Financial control of Agricultural markets CADE Computer Aided Document Engineering CADES Computer Aided DMS Engineering System CaDivI Call Diversion Information CADM Content-Addressable Data Manager CADMAT Computer-Aided Design, Manufacture and Testing CADN Cellular Access Digital Network CADN Circuit Administration CADSIM Continuous And Discrete Simulation CAE Change Application Engineering CAE Common Application Environment (X/Open) CAE Communications Applications Environment CAE Computer-Aided Engineering CAE Customer Application Engineering CAESS Customer Application Engineering Support System CAF Common Application Framework CAF Content Application Form CAF Corel Application Framework CAFD Comptroller's Automatic Message Accounting Format Description CAFIS Credit and Financial Information System CAG Call Agent CaHI Call History Information CAI Carrier Access Information CAI Charge Advice Information CAI Common Air Interface CAI Computer Aided Instruction CAI MDII: Address Incomplete Signal Received CAIN Collected Address Information Number CAIP Computer Aids to Industrial Productivity CAKE Commercial Automated Key Escrow CAL Calendar file CAL Computer Aided Learning CAL Customer Access Link CALA Caribbean and Latin America CALC Customer Access Line Charge CALEA Communications Assistance for Law Enforcement Act CALL PROC Call Proceeding message CALLBL Call Block CallL Call Leg CallP Call Processing CALM Central Alarm Monitoring CALM Centralized Alarm CALM Common Assembly Language for Microprocessors CALMS Credit and Load Management System CALP Called Line Identification Presentation CALRS Centralized Automatic Loop Reporting System CALS Computer aided Acquisition and Logistic Support (United States Mil itary) CALS Computer aided Acquisition, Logistics and Support (DoD program) CALS Continuous Acquisition and Lifecycle Support CALS Continuous Acquisition and Lifecycle System CAM Call Accepted Message CAM Call and Agent Manager CAM Cell Arrival Monitoring CAM Channel Adapter Manager CAM Common Access Method CAM Common Analysis Model CAM Communication Access Method CAM Communications Application Module CAM Computer Aided Mapping CAM Computer-Aided Manufacturing CAM Connections Access Manager CAM Content Addressable Memory CAM Controlled Attachment Module CAM Customer Access Module CAM1 Communications Application Module, Type 1 CAM2 Communications Application Module, Type 2 CAMA Centralized Automatic Message Accounting CAMAC Computer Application to Measurement And Control CAMA-C Centralized Automatic Message Accounting-Computerized CAMA-ONI Centralized Automatic Message Accounting-Operator Number Identific ation CAMC Customer Access Maintenance Centre CAMEL Customized Applications for Mobile networks Enhanced Logic (GSM te rm) CAMENG Computer Aided Manufacturing Engineering CAMF Customer Access Management Function CAMMS Centralized Access Maintenance and Monitoring System CAMS Central Administration and Maintenance Subsystem CAN Campus-Area Network CAN Cancel CAN Cancel Abbreviated Number Delivery CAN Central Administration for NDAF CAN Controller Area Network (Automotive Electrics, R. Bosch GmbH) CANBER Canada-Bermuda submarine cable CANC Cancel CANF Cancel From CanF Cancel From CANT Cancel To CanT Cancel To CANTRAN Cancel Transmission CANTS Customer Access Network Transmission Standards CANTV Compania Anonima Nacional Telefonos de Venezuela CAP Call Appearance CAP CAMEL Application Part CAP Capability CAP Capacitor CAP Carrierless AM/PM CAP Carrierless Amplitude and Phase CAP Carrierless Amplitude Modulation/Phase Modulation CAP Carrierless Amplitude/Phase CAP Carrierless Amplitude/Phase Modulation CAP Cell Arrival Pattern CAP Cellular Access Processor CAP Cellular Application Processor CAP Central Answering Position CAP Central Arbitration Point CAP Change Application Procedure CAP Circuit Access Point CAP Common Application Platform CAP Communication of Act Parameters CAP Competitive Access Provider CAP Computer Aided Publishing CAP Conformance Assessment Process CAPAC Cable Packet Communications CAPAM Call Appearance for Analog Member of EKTS CAPC Congestion Avoidance with Proportional Control CAPG Control of Application Process Group CAPI Call Appearance Identifier CAPI Common API for ISDN CAPI Common Application Programming Interface CAPI Common ISDN API CAPNET Captive Network CAPP Computer Aided Process Planning CAPS Call Appearance Sequence CAPS Call Attempts Per Second CAPT Call Appearance Terminal CAPTAIN Character And Pattern Telephone Access Information Network CAQ Computer Aided Quality control CAR Cal Request CAR Call Request CAR Carrier CAR Carry CAR Cartoon Network CAR Channel Assignment Record CAR Communication of Act Relationship CAR Computer Access Restriction CAR Computer Aided Radiology CAR Computer Aided Retrieval CAR Connection Address Resolution CAR Corrective Action Request CARAM Content Addressable Random Access Memory CARB Channel Assignment with Borrowing and Reassignment CaRe Call Reference CARE Customer Account Record Exchange CARE/ISI Customer Account Record Exchange/Industry Support Interface CARES EKTS Call Appearance Reservation CARIN Center for Applied Research on Information Networking CAROT Centralized Automatic Reporting On Trunks CARP Cache Array Routing Protocol CARPAC Carrier Pretest and Cutover CARRET CARriage Return CARS Relay Station CARS Communication Analysis Reporting System CARS Community Antenna Relay Service CARS Computerized AMA Recording System CARTS Carrier Accounting Records Transport System CARTS Circuit Assignment Record Transfer System CAS Call Accounting System CAS Call Associated Signaling CAS Call Attendant Services CAS Centralized Attendant Service CAS Channel Associated Signaling CAS Column Address Select CAS Column Address Strobe CAS Communications Application Specification (DCA-INTEL eq to Net BIOS or LANManager) CAS Component Administration System CAS Computer Aided Systems CAS Computer-Assisted Signaling CAS Conseil de la Audiovisuel Superieur CAS Content Addressable Storage CAS Control Automation System CAS CPE Alerting Signal CAS CPS Architecture Summary CAS Craft Administration System CAS Customer Access Systems CAS Customer Account Services CAS IBM Centre for Advanced Studies CASA Connection Arrangement for Switched Access CASCO ISO council Committee on COnformity ASsessment CASD Computer Aided System Design CASE Common Application Service Element CASE Computer-Aided Software Engineering CASE Computer-Assisted Software Engineering CASE Computing and Systems Evolution CASL Crosstalk Application Scripting Language CASOP CMS AR Screening Of Private Calls CAST Carlisle Adams-Stafford Tavares CAST Computerized Automatic System Tester CASVE Computer Aided Software Verification Environment CAT Catalog File CAT Centrex Access Treatment CAT Clear Air Turbulence CAT Comite des Activites Techniques (CEPT) CAT Common Authentication Technology CAT Component Assembly Tool CAT Computer Aided Testing CAT Computer Aided Tomography CAT Computer Aided Translation CAT Computer Aided Typesetting CAT Computer-Aided Transcription CAT Computerized Axial Tomography CAT Council for Automation Tools CAT Customer Access Treatment CATA Canadiabn Advanced Technology Association CATCR Customer Access Treatment Code Restriction(s) CATFOP CMTS AMA Tape Formatted Output Program CATG Computer Aided Test Generation CATLAS Centralized Automatic Trouble Locating and Analysis System CATNIP Common Architecture for the Internet Protocol CATRP China Academy of Telecommunications Research and Planning CATS Calling Card and Third Party Number Settlement CaTS Capacity Tracking System CATS Cellular Air Traffic System CATS Computer Aided Testing System CATS Computer-Accessed Telemetry System CATS Consortium for Audiographics Teleconferencing Standards CATS Crossconnect And Transfer System CATT Centralized Automatic Toll Ticketing CATTS Centralized Automatic Trunk Test System CATV Cable Television CATV Community Antenna Television CATV Community Antenna TV CAU Cable Access Unit CAU Cause CAU CDMA Application Unit CAU Cell Antenna Unit CAU Control Arithmetic Unit CAU Controlled Access Unit CAU Customer Access Unit CAV Card Access Valid CAV Component Analog Video CAV Constant Angular Velocity CAVE Cellular Authentication and Voice Encryption CAVE Computer Automatic Virtual Environment CAVU Cellular Authentication and Voice Privacy Unit CAW Certification Authority Workstation CAW Channel Address Word CAW Command Address Word CAX Community Automatic Exchange Cb Blue Chrominance CB Call Barring CB Call forwarding Busy CB Carrier Band (modulation technique) CB Cell Broadcast CB Channel Bank CB Chrominance colour difference, Blue CB Circuit Breaker CB Citizens Band CB Citizen's Band (Radio) CB Clear Back CB Coin Box CB Common Battery CB Compatibility Bulletin CB Connecting Block CB Connection Broker CB Control Block cb Count of bytes CB/TH Circuit Breaker- Thermal CB1 Clear-Back No. 1 signal CB2 Clear-Back No. 2 signal CB3 Clear-Back No. 3 signal CBA Changebank Acknowledgement message C-band 4/6 GHz frequency range CBA-RA Coin Box Accounting for Revenue Allocation CBASIC Compiled-BASIC CBBS Computerized Bulletin Board System CBC Call By Call CBC Canadian Broadcasting Corporation CBC Can't Be Called CBC Cell Broadcast Centre (GSM) CBC Cell Bus Controller CBC Channel Bus Controller CBC Cipher Block Chaining CBC Circuit Bearer Channel CBC Connectionless Bearer Control CBC Consecutive Blank Column CB-CC Connection Broker-Connection Control CBCH Cell Broadcast Channel CBCH Common Control CHannel CBCP Callback Control Protocol CBCSS Call By Call Service Selection CBD Call Box Discrimination CBD Changeback Declaration message CBDS Circuit Board Design System CBDS Connectionless Broadband Data Service CBDS Constant Bit Rate Data Service CBDT Can't Break Dial Tone CBE Call Forwarding Busy Internal Calls Only CBE Centralized Branch Exchange CBEd Computer-Based Education CBEMA Computer and Business Equipment Manufacturers Association CBG Census Block Group CBH Can't Be Heard CBI Call Forward Busy Intragroup CBI Channel Bus Interface CBIC Complimentary Bipolar Integrated Circuit CBIC Control Bus Interface Chip CBIOS Compatibility BIOS CBIS Cincinnati Bell Information Systems CBK Change Back CBK Clear Back message CBK Clear-Back signal CBK Code Blocking CBL Charge-Buffered Logic (Low-Power Bipolar ) CBLU Citizens Band Licencing Unit CBMI Cell Broadcast Message Identifier CBMS Computer Based Message Service CBMS Computer Based Message Switching CBMS Computer-Based Message System CBN Common Bonding Network CBN Compromise Balance Network CBO Continuous Bit-Stream Oriented CBO Cooperative Business Object CBP Coded Block Pattern CBQ Call Back Queuing CBQ Class Based Queuing CBR Carrier and Bit timing clock Recovery CBR Cavity-Backed Radiator CBR Constant Bit Rate CBR Continuous Bit Rate CBR-AAL Constant Bit Rate ATM Adaptation Layer CBS Card Buffer Storage CBS Cell Broadcast Service CBS Centralized Business Service CBS Columbia Broadcasting System CBS Committed Burst Size CBS Common Battery Signaling CBS Communal Base Station CBS Communication Base Station CBS Constant Bitrate Services CBSC CDMA Base Station Controller CBSW Common Board Software CBsy C-Side Busy C-BSY Core Side Busy CBT Computer-Based Terminal CBT Computer-Based Training CBT Core-Based Tree(s) CBT Cursor Backward Tab CBTA Canadian Business Telecommunications Alliance CBTA Canadian Business Telecommunications Association CBU Call Forwarding Busy Unrestricted CBUD Call Before U Dig CBUS Control Bus C-Bus Channel Transport Bus C-Bus Channelized Bus CBW Convert Byte to Word (80x86 inst) CBWV Call Busy Work Volume CBX Computer-Based Exchange CBX Computer-Controlled Branch Exchange CBX Computerized Branch Exchange (PBX) CBX Computerized Private Branch Exchange cc C Compiler CC C++ Compiler/Translator CC Cable Connector CC Call Center CC Call Code CC Call Configuration CC Call Connect CC Call Connected CC Call Connected packet CC Call Control CC Call Control Entity CC Calling Card CC CAM Controller CC Capability Complete cc Carbon Copy CC Card Column CC Card Count CC Carrier Connect CC Carrier Current CC Central Control CC Central Controller CC Channel Control information element CC Channel Controller CC Chip Carrier cc Cicero CC Clear Channel CC Close-Captioned CC Cluster Controller CC Code Complete CC Coin Collect CC Coin Completing CC CC Color Code CC Command Chaining CC Common Carrier CC Common Control CC Common Controller CC Communication Computer CC Communication Control CC Company Code CC Composite Call CC Composite Clock CC Computer Center CC Computing Center CC Condition Code CC Conference Calling CC Congestion Control CC Connection Confirm CC Connection Control CC Connection Coordinator CC Continuity Cell CC Control Channel CC Control Component CC Control Console CC Convolutional Code CC Coordinating Commitee CC Coordination Center CC Cost Component CC Countdown Counter CC Country Code CC Cross Connection CC Cross-Connect CC Crystal Controlled CC Cursor Control CC Cyclic Check CC ISO country code for Cocos (Keeling) Islands CC/OR Coin Collect/Operator Released CC1 Calling Card- Type 1 CC1 CAM Controller, Type 1 CC2 Calling Card- Type 2 CC2 CAM Controller, Type 2 CCA Call Classification Analysis CCA Call Control Agent (typically a terminal equipment) CCA Carrier Central Agent CCA CENELEC Certification Agreement CCA Circuit Card Assembly CCA Clear Channel Assessment CCA Adapter CCA Conceptual Communication Area (OSI) CCA Control Channel Acquisition CCAF Call Control Agent Function CCAF Call Control Agent Functional Entity CCAF Cluster Control Agent Function CCAF+ Call Control Agent Function Plus CCAFr Call Control Agent Function (Radio) CCAFR Customer Control of Automatic Flexible Routing CCAN Calling Card Account Number CCAN Credit Card Account Number CCAP Communication Control Application Program CCAS Call Control Application Services CCB Call Condense Block CCB Call Control Block CCB Change Control Board CCB Channel Command Block CCB Channel Control Block CCB Coin Collecting Box CCB Command Control Block CCB Common Carrier Bureau ccb Communications Control Block CCB Cyclic Check Byte CCBQ Coordinated Call Back Queing CCBS Call Completions to Busy Subscribers CCBS Completion of Calls to Busy Subscriber (supplementary service) CCBSi Completion of Calls to Busy Subscriber Call Indicator CCC CDMA Cluster Controller CCC Cenelec electronic Components Certification CCC Central Control Complex CCC Clear Channel Capability (T1 option to use full bandwidth with B8Z S coding) CCC Coinless, Charge-a-Call CCC Color Conversion Context CCC Common Customer Code CCC Communication Command and Control (communication control character ) CCC Corrective Content Complete CCC Credit Card Calling CCC Credit Card Control CCC Custom Charge Calling CCCD Conductively Connect Charge-coupled Device CCCH Common Control Channel CCCI Command, Control, Communication & Intelligence system (US Military ) CCCI Command, Control, Communications and Intelligence CCCM Council Committee on Consumer Matters CCCP Connection Control Protocol CCD Central Control Disabled CCD Charge-Coupled Device CCD Class Communication Diagram CCD Coin Collect Detect CCDB Calling Card Database CCDC Channel Compatible Digicipher CCDN Corporate Consolidated Data Network CCE Cannel Control Error CCE Central Control Enabled CCE Consistency Check End message CCE Control Creation Edition CCE Corporate Component Engineering CCEA Consistency Check End Acknowledgement message CCEL C++ Constraint Expression Language CCEL Call Connection Elapsed Time Limitation CCES Centrally Controlled Equaliser System CCES Common Control Echo Suppressor CCETT Centre Commun d'Etudes de Télédiffusion et de Télécommunications (France) CCF Call Control Function CCF Call Control Functional Entity CCF Cluster Control Function CCF Coin, Coin First CCF Common Control Function CCF Communications Control Field CCF Complex Call Framework CCF Conditional Call Forwarding CCF Continuity Check Failure message CCF Continuity-Failure signal CCF Custom Calling Feature(s) CCF+ Call Control Function Plus CCFAC Customer Control of Facilities CCFL Cold-Cathode Fluoresecent Lamp CCFP Central Control Fixed Part CCFP Common Control Fixed Part CCFT Cold Cathode Fluorescent Tube CCG Computer Communications Group CCH Cancel Previous Character CCH Comite Consultatif pour l'Harmonisation CCH Common Control Channel CCH Connections per Circuit per Hour CCH Continuity Check Indicator CCH Control Channel CCH Coordination Committee on Harmonization CCI Call Completion Internet CCI CCITT and CCIR CCI Common Client Interface CCI Common Customer Identifier CCI Computer Consoles Incorporated CCI Concorde-to-Concorde Interface CCI Conference Circuit Interconnection CCI Continuity Check Incoming CCIA Computer and Communication Industries Association CCID Call Count- Information Delivered CCIE Call Control Information Element CCIF Call Control Interface CCIF Comité Consultatif International Téléphonique (International Telephone Consultative Committee) CCIR Comité Consultatif International de Radiocommunications (now ITU-R) CCIR Comite Consultatif International de Radiodiffusion CCIR International Radio Consultative Committee (now ITU-R) CCIR Internationaler Beratender Ausschub für das Funkwesen CCIRN Coordinating Committee for International Research Networking CCIS Common Channel Interoffice Signaling CCIS6 Common Channel Interoffice Signaling System No. 6 CCIT International Telegraph Consultative Committee CCITT Comité Consultatif International Télégraphique et Téléphonique (International Consultative Committee for Telegraph and Telephone, now ITU-T) CCIUG ClearCase International Users Group CCKF Continuity ChecKtone Failure (SPADE) CCKT Continuity Check Tone CCL Calling Party Clear message CCL Change Control Log CCL Common Communication Link CCL Comon Carrier Line CCLC Carrier Common Line Charge CCM Central Customer Manager CCM Circuit Supervision Message CCM Common Channel Signalling Module CCM Common Control Module CCM Communication Channel Management CCM Complex Call Model CCM Composite Call Model CCM Connection Control Message CCM Cross-Connect Multiplexor CCM Current Call Meter CCM Customer Configuration Management CCM Customer Control and Management CCM DMS-100 Common CCMC Computer Communications Maintenance Center CCMF Centralised Control and Monitoring Function CCMIS Call Centre Management Information System CCMP Call Completion CCMP CC Message Processor CCMP Credit Card Mobile Phone CCN Calling Card Number CCN Common Channel Network CCN Contract Change Notice CC-NDT Can't Call-No Dial Tone CCNR Completion of Call No Reply (supplementary service) CCNR Completion of Calls on No Reply CC-NUMA Cache-Coherent NUMA CCO Colorado Communications Operation CCO Component Coordinator CCO Continuity-Check Outgoing CCODE Country Code CCOFGQ Customer Control of Outgoing Facility Group Queuing CCOM Organization Module CCOV Code Coverage CCP Calibrator Characteristic Parameter CCP Capability/Configuration Parameter CCP Character Control Protocol CCP Communication Control Package CCP Compression Control Protocol CCP Connection Control Protocol CCP Console Command Processor CCP Content Check Point CCP Credit Card Processor CCPE Cabinetized Common Peripheral Equipment CCPE Control Channel Protocol Entity CCPU Call Count- Information Private/Unavailable CCR Cable Control Room CCR Call Charge Record CCR Commitment, Concurrency, and Recovery CCR Computer Controlled Retrieval CCR Condition Code Register CCR Consistency Check Request message CCR Console Card Reader CCR Continuity Check Request message CCR Cumulative Charge Restriction CCR Current Cell Rate CCR Current Controlled Resistor CCR Customer Controlled Reconfiguration CCR Customer Controlled Routing CCR Customized Code Restriction CCRA Consistency Check Request Acknowledgement message CCRA Continuity Check Request Acknowledgement message CCR-PR Customized Call Routing with Private Network CCR-PU Customized Call Routing with Public Network CCRS Centrex Customer Rearrangement Service CCRSE Commitment, Concurrency and Recovery Service Element CCS 100 Call Seconds CCS C Compilation System CCS Calculus of Communicating Systems CCS Calling Card Service CCS Cent Call Seconds (36 CCS = 1 Erlang) CCS Centi-Call Seconds CCS Channel Change Status CCS Chip Carrier Socket CCS Common Channel Signaling CCS Common Command Set CCS Common Communications Subsystem CCS Common Communications Support CCS Common Control Style CCS Connection Successful CCS Continuous Color Sequence CCS Continuous Composite Servo CCS Cross Connect System CCS Custom Calling Services CCS Cutover Conversion Services CCS#6 Common Channel Signaling System No. 6 CCS#7 Common Channel Signaling System No. 7 CCS/C Corporate Computer Systems C CCS6 Common Channel Signaling System No. 6 CCS7 Common Channel Signaling System No. 7 CCSA Common Control Switching Arrangement CCSA Common-Control-Switching Arrangement CCSAN Calling Card Subaccount Number CCSB Command Complete Status Block CCSC Customer Changeable Speed Calling CCSF Common Channel Signaling Failure CCSL Compatible Current-Sinking Logic CCSN Calling Card Service Node CCSN Common Channel Signaling Network CCSN Customer Contact Service Node CCSNIS Common Channel Signaling Network Interface Specification CCSS Common Chanel Signalling System CCSSO Common Channel Signaling Switching Office CCSUA Call Control Service User Application CCT Call Classification Terminal CCT Card Configuration Table CCT Carrier Connect Time CCT Carrier Current Transceiver Cct Circuit CCT Circuit CCT CNMA Conformance Testing CCT Complex Call Topology CCT Computerized Communication Terminal CCT Connection Type CCT Consortium for Communication Testing (private) CCT Consultative Committee on Telecommunications CCT Continuity Check Transceiver CCT Control Concentrator Terminal CCT Cross Connect Type CCTA Central Computer and Telecommunications Agency (UK) CCTO Call Completion with Trunk Optimization CCTS Comite de Coordination pour Telecommunications par Satellite (CEPT , obsolete) CCTV Closed-Circuit Television CCU Cable Control Unit CCU Camera Control Unit CCU Central Control Unit (FEP IBM) CCU Communication Control Unit CCU Controller Coax Unit CCUG Canadian Centrex Users Group CCUP Customer Communication Update Package CCV Call Covering CCV Calling Card Validation CCV Charge Card Validation CCV Credit Card Validation CCW Cancel Call Waiting CCW Channel Command Word CCW Channel Control Word CCW Counterclockwise CCx CAM Controller, Type x CCX Central Connection Control CCX Central Connection Controller CD Cache Disable CD Call Deflection (supplementary service) CD Call Disposition CD Call Distribution CD Call Distributor cd candela CD Card CD Carrier Detect (signal) CD Circle Digit CD Circuit Description CD Code Diversion CD Code Division CD Collision Detection CD Command Data CD Command Dictionary CD Committee Document CD Committee Draft (former DP) CD Compact Disk CD Component Description CD Computer Design (periodical) CD Count-Down CD Critical Dimension CD ROM Compact Disc Read-Only Memory CD0 Clocked Data Zero CD1 Clocked Data One CDA Call Data Accumulator CDA Call Deflection Alerting CDA Call Delivery Activatable CDA Call Disposition Analyzer CDA Call Distribution to Attendant (supplementary service) CDA Call Diversion to Announcement CDA Call Duration Advice CDA CD Audio Track file CDA Coin Detection and Announcement CDA Command and Data Acquisition CDA Communications Decency Act CDA Compound Document Architecture (DEC) CDA Computer Drafting Aid system CDA Customer Data Access CD-A Audio Compact Disc CDAA Call Deflection After Answer CDAA Concurrent Data Access Architecture CDAL Control and Diagnostic Access Link CDAM Committee Draft Amendment CDAR Customer Dialed Account Recording CDB Call Data Block CDB Call Diversion on Busy CDB Channel Data Byte CDB Class Descriptor Block CDB Command Database CDB Command Descriptor Block CDB Common Data Base CDB Communications Device Buffer CDB Component Data Base CDB Configuration Data Base CDBM Call Data Block Manager CDC Call Direct Code CDC Call Directing Character CDC Call Directing Code CDC Central Distribution Center CDC Certificate Distribution Center CDC Characteristic Distortion Compensation CDC Coin Detection Circuit CDC Command Document Continue CDC Conditioned Diphase Code CDC Control Data Corporation CDC Control Delay Channel CDC Customer Data Change CDCCP CDC Control Data Procedure (CDC) CDCCP Control Data Communications Control Procedure CDCL Code Calling CDCL Command Document Capability List CDCS Continuous Dynamic Channel Selection CDD Client Device Driver CD-DA Compact Disk-Digital Audio CDDI Cable Distributed Data Interface CDDI Copper Distributed Data Interface CDDI FDDI-over-Copper CDE Common Desktop Environment CDE Customer Design Engineering CDE Exclude Intragroup Calls from Call Forwarding CD-E Compaft Disk-Erasable CDET Charge Determination CDF Call Diversion Fixed CDF Carrier Distribution Frame CDF Channel Definition Format CDF Coin, Dial-Tone First CDF Combined Distribution Frame CDF Communications Data Field CDF Context-Dependent File CDF Cumulative Distribution Function CDF Cutoff Decrease Factor CDF Cyberspace Description Format CDFI Cabinetized Direct Fiber Interface CDFL Capacitive Diode Field-effect transistor Logic CDFS CD-ROM File System CDFS Compact Disk File System CDG Call Delivery Global CDG CDMA Development Group CDG Corporate Design Group CDH Cooperative Document Handling CDI Call Detail Information CDI Call Forward Do Not Answer Intragroup CDI Called Line Identity CDI Change Direction Indicator (SNA) CDI Collector-Diffused Isolation CDI Compact Disc Interactive CDI Concentrating DASS2 Interface CDI Conventional Defence Initiative CDI Copper Distribution Interface CDI Interactive Compact Disk CD-I Compact Disk- Interactive CD-I Interactive Compact Disc CDIP Ceramic Dual In-line Package (IC) CDIS Cable Data Instrumentation System CDIV Call Diversion CDK Control Development Kit CDL Carrier Detect Level CDL Comite De Lecture CDL Component Description Language CDL Computer Description/Design Language CDL Customer Defined Location CDLC Cellular Data Link Control CDLI Called LATA Identity CDLI Called Line Identity CDLN Called Line Number CDLN Cornerstone Distance Learning Network CDM Class Data Manager CDM Code Division Multiplexing CDM Common Domain Model CDM Companded Delta Modulation CDM Conceptual Data Model CDM Configuration Data Management CDM Configuration Data Manager CDM Consumer Digital Modem CDM Curo Document Manager CDM Customer Data Modification CDMA Code Division Multiple Access () CDME Composite Downstream Mapping Element CDMR Call Detail Maintenance Record CDMS Cluster Data Management System CDN Cable Data Network CDN Call Processing Database Node CDN Called Party Number CDN Change Directory Number CDN Control Directory Number CDN Customer Defined Network CDNA Call Diversion No Answer CDNI Cabinetized Digital Network Interconnect CDO Call Diversion to Operator CDO CDO Connect Data Overflow CDOC Customer Documentation CDOS Customer Dialed Operator Service CDOS Customer Dialed, Operator Serviced CDP Cache Data Port CDP Communications Data Processor CDP Component Development Plan CDP Coordinated Dialing Plan CDP Custom Dialing Plan Trigger CDP Customized Dialing Plan CDP0 Cache Data Port Register 0 CDP1 Cache Data Port Register 1 CDP2 Cache Data Port Register 2 CDP3 Cache Data Port Register 3 CDPA Called Party Address CDPB Command Document Page Boundary CDPD Cellular Digital Packet Data CDPN Called Party Number CdPN Called Party Number CdPNo Called Party Number CDPR Card Pair CDPR Customer Dial Pulse Receiver CDPSAIT Called Party Subaddress Information Transfer CDPSDBL1 Called Party Subaddress Delivery Billing Records (Intranetwork) CDPSDBL1P Called Party Subaddress Delivery Billing Records (Intranetwork) fo r PRI CDPSDBL2 Called Party Subaddress Delivery Billing Records (Internetwork) CDPSDBL2P Called Party Subaddress Delivery Billing Records (Internetwork) fo r PRI CdPSub Called Party Subaddress CDQ Convert Doubleword to Quadword (80x86 inst) CDR Call Detail Record CDR Call Detail Recording CDR Call Detail Reporting CDR Common Data Rate CDR Common Data Representation CDR Connected Digit Recognition CDR CorelDraw File CDR Current Differential Relaying CD-R Compact Disk-Recordable CDRAM Cached DRAM CDRC Call Detail Recording Call Entry CDRE Call Detail Recording Extension Blocks CDRM Cross-Domain Resource Manager CDROM Compact Disk Read Only Memory CD-ROM Compact Disc Read-Only Memory CDRR Call Detail Recording and Reporting CDRS Call Detail Recording Call Processing CDRTOS Compact Disk Real Time Operating System CD-RW Compact Disk-Rewritable CdS Cadmium Sulfide CDS Call Data Store CDS Call Deflection Selection CDS Call Diversion to Subscriber CDS Called Party Subaddress CDS Cell Directory Server CDS Cell Directory Service CDS Command Document Start CDS Companion Diagnostic Software CDS Current Directory Structure CDSI Called State Identity CDSIS Combined Discrete continuous SImulation System CDSN Cabinetized Dual Shelf Network CDST Called Party Station Type CDT Call Data Transmitter CDT Display Technology CDT Carrier Detect Threshold CDT Carrier Dial Tone CDT Center for Democracy and Technology CDT Central Daylight Time CDT Companion Deployment Tool CDT Concrete Data Type CDT Configuration Data Table CDT Connectionless Data Transmission CDT Control Data Terminal CDT Credit CDT Credit allocation (OSI-TL) CDTE Cabinetized Digital Trunk Equipment CDTV Conventional Definition Television CD-TV Commodore Dynamic Total Vision CDU Call Distribution Unit CDU Call Forwarding Do Not Answer Unrestricted CDU Central Display Unit CDU Clock Distribution Unit CDUR Chargeable Duration CDV Call Deflection Variable CDV Cell Delay Variation CDV Compact Disk Video CDV Constant Delay Value CD-V Compact Disk-Video CDVCC Coded Digital Verification Color Code CDVM Call Diversion to Voice Mail CDVT Cell Delay Variation Tolerance CDW Call Delivery Wide CD-WO Compact Disk Write-Once CDX Compact Digital Exchange CD-XA Compact Disc-Extended Architecture CE Channel Element CE Chip-Enable (signal) CE Circuit Emulation CE Collision Enforcement CE Common Equipment CE Communaute Europeenne (EC) CE Compact Edition CE Compute Engine CE Conditioning Equipment CE Congestion Encountered CE Connectable Entity CE Connection Element CE Connection Endpoint CE Conseil de l'Europe CE Consumer Electronics CE Control Element CE Council of Europe CE Customer Equipment CE/PE Common Equipment/Peripheral Equipment CE1 Compute Engine, Type 1 CE3 Control Equipment No. 3 CEA Canadian Electric Association CEAC Commission Européenne de l'Aviation Civile CEAC Committee for European Air-spaced Coordination CEB Comite Electrotechnique Belge (B) CEBS Circuit Emulation Bearer Service CEBUS Consumer Electronics BUS CEbus Consumer Electronics Bus CEC Canadian Electrical Code CEC Cell Error Check CEC Commission des Communautés Européennes CEC Commission of the European Communities (no longer exists, replaced by EC) CEC Commission of the European Community CECB Connection Endpoint Control Block CECC Cenelec Electronic Components Committee/ies CECUA Confederation of European Computer Users Association CED CallEd station identification CED Called Station Identifier CED Capacitive Electronic Disk CEDI Conditional End bracket inDIcator (SNA) CEDL Compiled Encapsulator Description Language CEE Call Extension Element CEE Communauté Economique Européenne CEE Conformity certification of Electrical Equipment CEF Cable Entrance Facility CEFIC Consiglio Europeo delle Federazioni delle Industrie Chimiche CEG Cause Effect Graphing CEG Continuous-Edge Graphics CEI Call Establishment Information CEI Comitato Elettrotecnico Italiano CEI Comparably Efficient Interconnect CEI Comparably Efficient Interconnection CEI Connection Element Identifier CEI Connection Endpoint Identifier CEI Connection End-point Identifier (OSI) CELL Cellular CELLTREX Cellular Telephone Radio Exchange CELP Code Excitation Linear Prediction CELP Code Excited Linear Prediction CELP Code-Excited Linear Predictive Coding CELP+ Enhanced CELP CE-LPC Code Excited Linear Predictive Coding CELTIC Concentrateur Exploitant Les Temps d'Inactivite des Circuits CEM Cellular Equipment Manager CEM Centro Esercizio e Manutenzione (Italian switching operations syst em) CEM Common Equipment Module CEMA Canadian Electrical Manufacturers Association CEMA Consumer Electronics Manufacturing Association CEMEC Committee of European associations of Manufacturers of Electronic Components CEMF Counter Electromotive Force CEMT Conference Europeenne de Ministres des Transports CEN Comité Européen de Normalisation CEN Comité Européen pour la Normalisation CEN European Committee for Standardization CENCER CEN Certification CENELEC Comité Européen de Normalisation Electrotechnique CENELEC Comité Européen pour la Normalisation Electrotechnique CENELEC European Committe for Electrotechnical Standardization CENTAURE Centre d'Assistance aux Utilisateurs du Reseau (Cognitech) CENTRACS Centrex Trouble Reporting Analysis Control System CENTREX Centralized Exchange Centrex Centralized Exchange CEO Chief Executive Officer CEO Chief Executive Officer (US) CEO Comprehensive Electronic Office CEP Cepstral Data CEP Connection End Point CEPR Common Employee Password Registry CEPR Corporate Employee Password Registry CEPR Corporate Employee Password Repository CEPT Conférence Européenne des Administrations des Postes et des Télécommunica tions (European Conference of Postal and Telecommunications Administrati ons) CEPT Conference Européenne des Postes et Télécommunications (European Conference of Postal and Telecommunications) CEQ Customer Equipment CER Call Event Record CER Call Event Recording CER Canonical Encoding Rules CER Cell Error Ratio CER Character Error Ratio CERD Comite Europeen pour la Recherche et la Developement CERDIP Ceramic Dual In-line Package CERF California Education and Research Foundation CERN Centre Européen de Recherche Nucleaire CERN Centre Européen pour la Recherche Nucleaire CERN Conseil Europeen pour la Recherche Nucleaire cerr C++ Error Output Stream CERT Computer Emergency Response Team CERTICO ISO Council Committee on CERTification CERTS COS On-Line Error Reporting and Tracking System CES Captive Engineering Services CES Carrier Entity Set CES Circuit Emulated Services CES Circuit Emulation Service CES Coast Earth Station CES Comite Electrotechnique Suisse CES Connection Endpoint Suffix CES Consumer Electronics Show CESA Canadian Engineering Standards Association CESAC CCIS Electronic Switching Systems Assistance Center CESD Composite External Symbol Dictionary CESE Capability Exchange Signalling Entity CESG Communication and Electronic Security Group (UK) CESI China Electronics Standardization Institute CESID Caller's Emergency Service Identification CES-IS Circuit Emulation Service Interoperability Specification CESS Coax Elimination and Switching System CETBDN Continue Existing Treatment Returned to Base DN CEU Common Equipment Unit CEU Continuing Education Unit CEU DMS-100 Europe CEV Controlled Environment Vault CEx Compute Engine, Type x CEXT Cabinetized Extension Module CF Call Forwarding (supplementary service) CF Carry Flag CF Clipboard Format CF Coin First CF CompactFlash CF Compact-Flash CF Content Freeze CF Contention-Free CF Control Function CF Convergence Function CF Conversion Facility CF Coordination Function CF Crest Factor Cf feeding Capacitor CF Higher layer signalling channel (fast) CF ISO country code for Central African Republic CF2BECC Call Forwarding Busy 2, Establish Courtesy Call CF3P 3-Port Conference Circuit CFA Call Forward Allowed CFA Capital Funds Appropriation CFA Carrier Facility Assignment CFA Carrier Failure Alarm CFA-BC Concurrent Features Activation with Bi-Control CFAC Call Forward All Calls CFAC Call Forwarding Access Code CFAR Constant False Alarm Rate CFB Call Forward Busy CFB Call Forwarding Busy (supplementary service) CFB Cipher Feedback CFB2ACC Call Forwarding Busy Line 2 Access Code CFB2MFL Call Forwarding Busy 2, Multiple Forwarding Limit CFB2RCR Call Forwarding Busy 2 Remote Code Restriction CFB2RING Call Forwarding Busy 2, Reminder Notification Suppression CFB2RNP Call Forwarding Busy Line 2, Redirecting Party Number Presentation CFBACC Call Forwarding Busy Line Access Code CFBCAC Call Forwarding Busy Customer Activation Control CFBCC CFBL Customer Controlled CFBECC Call Forwarding Busy, Establish Courtesy Call CFBG Call Forward Busy Group CFBGT Call Forward Busy Group Treatment CFBILB Call Forwarding Busy Inhibit Line Busy CFBIMB Call Forwarding Busy Inhibit Make Busy CFBL Call Forward Busy Line CFBL Call Forwarding Busy Line CF-BL Call Forwarding- Busy Line CFBL2 Call Forwarding Busy Line 2 CFBL2RC CFBL2 Restricted Control CFBLILB Call Forwarding Busy Line-Inhibit Line Busy CFBLIMB Call Forwarding Busy Line-Inhibit Make Busy CFBLIO Call Forwarding Busy Line-Incoming Only CFBLRC CFBL Restricted Control CFBLRCAM CFBL Restricted Control for Analog Member of EKTS CFBMBT Call Forwarding Busy Make Busy Treatment CFBMFL Call Forwarding Busy Multiple Forwarding Limit CFBRCR Call Forwarding Busy Remote Code Restriction CFBRING Call Forwarding Busy Reminder Notification Suppression CFBRMB Call Forwarding Busy Remote Make Busy CFBRNP Call Forwarding Busy Line, Redirecting Party Number Presentation CFC Call Forwarding Cancellation CFC Chlorofluorocarbon CFC Coin and Fee Check CFC Coin and Fee Check message CFC Conditional Call Forward CFCW Call Forwarding of Call Waiting CFD Call for Discussion CFD Call Forward Denied CFD Call Forward Don't Answer CFD Call Forward No Answer CFD Call Forwarding Do Not Answer CFD Coin Free Dialing CFD Computational Fluid Dynamics CFD Connection Format Descriptor CFD2ACC Call Forwarding Don't Answer 2, Access Code CFD2ECC Call Forwarding Don't Answer 2, Establish Courtesy Call CFD2MFL Call Forwarding Don't Answer 2, Multiple Forwarding Limit CFD2RCR Call Forwarding Don't Answer 2, Remote Code Restriction CFD2RING Call Forwarding Don't Answer 2, Reminder Notification Suppression CFD2RNP Call Forwarding Don't Answer 2, Redirecting Party Number Presentat ion CFDA Call Forward Don't Answer CFDA Call Forwarding Don't Answer CF-DA Call Forwarding- Don't Answer CFDA2 Call Forwarding Don't Answer 2 CFDA2RC CFDA2 Restricted Control CFDACC Call Forwarding Don't Answer Access Code CFDAIO Call Forwarding-Don't Answer-Incoming Only CFDAMA Combined Free/Demand Assignment Multiple Access CFDARC CFDA Restricted Control CFDARCAM CFDA Restricted Control for Analog Member of EKTS CFDCAC Call Forwarding Don't Answer, Customer Activation Control CFDCC Call Forwarding Don't Answer, Customer Controlled CFDECC Call Forwarding Don't Answer, Establish Courtesy Call CFDM Compounded Frequency Division Multiplex CFDMFL Call Forwarding Don't Answer, Multiple Forwarding Limit CFDRCR Call Forwarding Don't Answer, Remote Code Restriction CFDRING Call Forwarding Don't Answer, Reminder Notification Suppression CFDRNP Call Forwarding Don't Answer, Redirecting Party Number Presentatio n CFDVT Call Forward Don't Answer Variable Timer CFF Call Forward- Forwarding Party COS CFF Call Forward, Fixed CFF Call Forwarding Fixed CFFP Call Forward Fraud Prevention CFG Linker Configuration File CFGB Configuration Control Block CFGD Call Forward Group Don't Answer CFGDA Call Forward Group, Don't Answer CFGDA Call Forwarding Group, Don't Answer CFGO Call Forwarding Group Only CFGOI Call Forwarding Variable Group Only, Intra-Group Destination CFI CAD Framework Initiative CFI Call Failure Indication CFI Call Forward Intragroup CFI Call Forwarding Intragroup CFI Channel Frame Interface CFI Connection Failure Information CFI Cross-Function Index CFIA Component Failure Impact Analysis CFIB Call Forwarding Interface Busy CFIG Call Forwarding Intragroup CFINT Call Forwarding Interval CFIO Call Forwarding-Incoming Only CFIOIG Call Forwarding Incoming Only, Intra Group Destination CFIOO Call Forwarding Variable Incoming Only, Outside Group CFK Call Forward Universal per Key CFL Call Failure message CFL Call Failure signal CFL Carrier Fail CFL Carrier Failure CFL Communications Framework Library CFLLR Call Forward Late-Late Release CFLR Call Forward Late Release CFM Code Fragment Manager CFM Companding and Frequency Modulation CFM Compounded Frequency Modulation CFM Configuration Management CFM Cubic Feet per Minute CFMDN Call Forward MADN CFML Cold Fusion Markup Language CFN Call Forward- No Answer CFN Call Forward Number CFN Confusion message CFNA Call Forward No Answer CFNA Call Forwarding No Answer CFNA-LR Call Forward No Answer-Late Release CFNB Remote Directory Number for CFBL CFNB2 Remote Directory Number for CFBL2 CFND Remote Directory Number for CFDA CFND2 Remote Directory Number for CFDA2 CFNF Call Forwarding Not Found CFNR Call Forwarding No Reply (supplementary service) CFNRc Call Forwarding Not Reachable CFNRy Call Forwarding No Reply CFNRy Call Forwarding On No Reply CFNV Remote Directory Number for CFV CFO Call Forward- Originating Party COS CFO Call Forwarding Outside CFO Chief Financial Officer CFO Contextual Feature Operator CFO MDII: Open Trunk, After Start of Pulsing CFP Call for Papers CFP Call Forward Programming CFP Channel Frame Processor CFP Contention-Free Period CFP Cordless Fixed Part CFPE Call Forward Prevention Enhancements CFPF Call Forwarding over Private Facilities CFR Code of Federal Regulations CFR ConFirmation to Receive CFR MDII: Continuity Failure CFRA Call Forward Remote Access CFRA Call Forward Remote Activation CFRA Call Forwarding- Remote Access CFRES Call Forwarding Restrictions CFS Call For Service signal CFS Call Forward Simultaneous/Screening CFS Call Forward Station CFS Common Functional Specifications CFS Conference Sizes CFS Cross-Function Selector CFS Cryptographic File System CFS12 Conference Size 12 CFS12D Conference Size 12 With Drop CFS18 Conference Size 18 CFS18D Conference Size 18 With Drop CFS24 Conference Size 24 CFS24D Conference Size 24 With Drop CFS3 Conference Size 3 CFS30 Conference Size 30 CFS30D Conference Size 30 With Drop CFS3D Conference Size 3 With Drop CFS6 Conference Size 6 CFS6D Conference Size 6 With Drop CFSAM Conference Size for Analog Member of EKTS CFSR Complete Feedback Shift Register CFSR0 Channel Function Select Register 0 CFSR1 Channel Function Select Register 1 CFSR2 Channel Function Select Register 2 CFSR3 Channel Function Select Register 3 CFT Cold Fluorescent Tube CFT Confirmation Tone CFU Call Forward Universal CFU Call Forwarding Unconditional (supplementary service) CFU Call Forwarding Unconditional to a service center (supplementary s ervice) CFU Call Forwarding Universal CFUB Call Forwarding on User Busy CFUSD Call Forwarding Usage Sensitive Denial CFUSP Call Forwarding Usage Sensitive Pricing CFV Call For Votes CFV Call Forward Validation CFV Call Forwarding Variable CFV2 Call Forwarding Variable 2 CFV2ACC Call Forwarding Variable 2, Access Code CFV2ECC Call Forwarding Variable 2, Establish Courtesy Call CFV2MFL Call Forwarding Variable 2, Multiple Forwarding Limit CFV2RC CFV2 Restricted Control CFV2RCR Call Forwarding Variable 2, Remote Code Restriction CFV2RING Call Forwarding Variable 2, Reminder Notification Suppression CFV2RNP Call Forwarding Variable 2, Redirecting Party Number Presentation CFVAC Call Forwarding Variable, Active/Inactive Status CFVACC Call Forwarding Variable, Access Code CFVECC Call Forwarding Variable, Establish Courtesy Call CFVMFL Call Forwarding Variable, Multiple Forwarding Limit CFVRC CFV Restricted Control CFVRCAM CFV Restricted Control for Analog Member of EKTS CFVRCR Call Forwarding Variable, Remote Code Restriction CFVRING Call Forwarding Variable, Reminder Notification Suppression CFVRNP Call Forwarding Variable, Redirecting Party Number Presentation CFVUS Call Forwarding Variable, Usage Sensitive CFW Call Forward CFW Call Forwarding CFWC Call Forwarding, Cancel CFWP Call Forwarding, Programming CFWUSP Call Forward Usage Sensitive Pricing CFWVAL Call Forward Validation CFX Call Forwarding (Universal/Busy/Don't Answer) CG Center of Gravity CG Character Generator CG Coast Guard CG CodeGuard CG Command Generator CG Computer Generated CG Computer Graphic CG Connection Graph CG Customer Group CG ISO country code for People's Republic of the Congo CGA Carrier Group Alarm CGA Color Graphics Adapter CGAP Call Gapping CGB Circuit Group Blocking message CGBA Circuit Group Blocking Acknowledgement message CGC Circuit Group Congestion message CGC Circuit Group Congestion signal CGC Congestion Control CGE Common Graphics Environment CGE Compagnie Generale d'Electricite CGH Chung, Graham, and Hwang CGI Cell Global Identification CGI Common Gateway Interface CGI Computer Generated Imagery CGI Computer Generations Inc. CGI Computer Graphics Interface (former VDI, proposed standard protoco l for GKS presentation) CGLI Calling LATA Identity CGLI CallinG Line Identification (functional entity) CGLN Calling Line Number CGM Circuit Group Supervision Message CGM Computer Graphics Metafile (GKS image storage and transmission) CGM Console Graphics Module CGMAP CGM Application Profile (CGM) CGMGDD CGM Generator Device Driver (CGM) CGMIDD CGM Device Driver (CGM) CGMIF CGM Interchange Format (CGM) CGMP Cisco Group Management Protocol CGN Calling Party Number CGP Call Global Procedure CGP Channel Group Processor CGPA Calling Party Address CgPC Calling Party Category CGPN Calling Party Number CGPN-NP Calling Party Number-Network Provided CgPNo Calling Party Number CGPSAIT Calling Party Subaddress Information Transfer CGPSD Calling Party Subaddress Delivery CGPSDBL1 Calling Party Subaddress Delivery and Redirecting Subaddress Delivery Billing Records (Intranetwork) CGPSDBL1P Calling Party Subaddress Delivery and Redirecting Subaddress Delivery Billing Records (Intranetwork) for PRI CGPSDBL2 Calling Party Subaddress Delivery and Redirecting Subaddress Delivery Billing Records (Internetwork) CGPSDBL2P Calling Party Subaddress Delivery and Redirecting Subaddress Delivery Billing Records (Internetwork) for PRI CGRP Circuit Group CGRR Circuit Group Reset Reception CGRS Circuit Group Reset Sending CGS Calling Party Subaddress CGS Centimetre,Gram,Second (system of measurement) CGS Continuous-Grain Silicon CGSA Cellular Geographic Service Area CGSB Canadian General Standards Board CGSET Circuit Group Set CGSI Calling State Identity CGSMTi Circuit Group Supervision Message Type Indicator CGU Circuit Group Unblocking message CGUA Circuit Group Unblocking Acknowledgement message CG-VDI Computer Graphics Virtual Device Interface CGW Cellular Gateway CGW Computer Graphics World (periodical) CH Call History CH Call Hold CH Can't Hear CH Cell Header CH Channel CH CHaracter CH Connection Handle CH Consultation Hold CH Count Register High Half ch Internet country code for Switzerland CH ISO country code for Swiss Confederation (Switzerland) CHA Call Hold with Announcement CHA Change CHA Cursor Horizontal Absolute CHAN Channel CHAN CHAnnel Number CHAN Channel Number Register CHAP Challenge-Handshake Authentication Protocol CHAP Challenge-Handshake Authorization Protocol CHAPH Change Packet Handler Parameters CHAR Character Information Element CHAS CHip Assembler CHB Call Handler Block CHB Call Header Block CHB Class Hierarchy Browser CHD Call Hold CHDAM Call Hold for Analog Member of EKTS CHDB Compatible High Density Bipolar CHDBR Call Hold B-Channel Reservation CHDBR Call Hold Release B-Channel Reservation CHDBREL Call Hold B-Channel Reservation Release CHDN Call Hold Notification to Held Party CHDN Change Hunt Directory Number CHF Change Feature Information CHF Swiss Franc(s) CHG Change CHG Change Translation/Routing Information CHG Charge CHG Charge message CHG Charge Number CHG Charging CHG Charging Information message CHG Charging message CHG Class Hierarchy Graph CHGE Charging Extended message CHGEA Charging Extended Acknowledgement message CHGI Charging Information ChgPID Charged Party Information CHI Computer-Human Interaction CHI Computer-Human Interface(s) CHILL ITU-T High Level Language CHINT Charge Injection Transistor ChIP Chunk Integration Point CHIP Constraint Handling in Prolog CHIPS Call History Information Process System CHL Change List CHM Changeover and Changeback messages ChM Channel Manager CHM CHannel Marker bit pattern CHMF CHannel Marker bit pattern sent by cordless Fixed part CHMOS High-Performance CMOS CHMP CHannel Marker bit Pattern sent by CPP CHN Change CHN Charge Number CHNBR Charge Number CHNL Channel CHNLTYP Channel Type CHP Charging Point CHPS CHaracters Per Second CHRP Common Hardware Reference Platform CHS Cylinder Head Selector CHS Cylinder, Head, and Sector CHST Charged Party Station Type CHT Call History Table CHT Call Hold and Trace CHT Call Holding Time CHT Charging Treatment For Origination CHT Cursor Horizontal Tab CHU CHannel Unit CHV Card Holder Verification CI Cache Inhibit CI Call Identities CI Capability Indicator CI Carrier Interconnect CI Cell Identity CI Cell Insertion CI Chain Index CI Changeover Indicator CI Circular Hunt CI Code Inspections CI Command Identifier CI Command Increment CI Command Interface CI Command Interpreter CI Common Interface CI Competitive Intelligence CI Complete Indicator CI Component Interface CI Components Integration CI Congestion Indication CI Congestion Indicator CI Connection Identifier CI Continuity Indicator(s) CI Continuity Information CI Continuous Improvement CI Control In CI Control Interface CI Creation Initiation CI Critical Indicator CI CUG Index CI Customer Information CI Customer Input CI Customer Installation CI Customer Interface CI ISO country code for Republic of the Ivory Coast CI II Computer Inquiry II CIA Central Intelligence Agency CIA Channel Interface Adapter CIA Computer Installation Assistance CIA Current Instruction Address CIAC Computer Incident Advisory Capability CIB Card Information Base CIB Centralized Intercept Bureau CIB Change Implementation Board CIB Class Information Block CIB CRC32 Identification Bit CIBER Cellular Inter-carrier Billing Exchange Record CIC Carrier Identification Code CIC Classification Information Center CIC Codec Identity Code CIC Common Interface Circuit CIC Contention for Incoming Calls CIC Customer Information Center (AT&T) CIC Customer Initiated Call CICA Chengdu Institute of Computer Application (China) CICATS Computer Industry Coalition for Advanced Television Service CICP Change Intercept CICR Cancel In-Chain Return CICS Compact Integrated Communications System CICS Customer Information Control System (IBM) CID Call Instance Data CID Caller Identification CID Calling Address Identification CID Calling Address Identifier CID Channel Identification CID Channel Identifier CID Character Identification CID Charge Injection Device (= optoelectronic sensor) CID Communication Identifier CID Communications ID CID Conference Identifier CID Configuration, Installation, and Distribution CID Connection Identification CID Content Identifier CID Craft Interface Device CID Customer ID CID Customer Identifier CID Customer Information Development CID Customer Interactive Dialing CIDB Corporate Images Database CIDC Cabinetized International Digital Controller CIDCW Caller ID with Call Waiting CIDCW Caller Identification on Call Waiting CIDCW Calling Identity Delivery On Call Waiting CIDFP Call Instance Data Field Pointer CIDN Customer International Data Number CIDR Classless Interdomain Routing CIDS Calling Identification Delivery and Suppression CIDS Calling Identity Delivery and Suppression CIDSACC Calling Identity Delivery and Suppression Access Codes CIDSBL CIDS Billing Records CIDSDLV Calling Identity Delivery CIDSSUP Calling Identity Suppression CIDST(1) Comite de l'Information et de la Documentation Scientifique et Tec hnique CIE Commission Internationale de L'Eclairage CIE Commission Internationale L'Eclairage CIE Committee Internationale de l'Eclairage CIEC Citizens Internet Empowerment Coalition CIEE Chinese Institute of Electrical Engineers CIER Channel Interrupt Enable Register CIF Caltech Interchange Format (CAE/CAD Systems) CIF Caltech Intermediate Form CIF Cells In Flight CIF Cells in Frames CIF Common Image Format CIF Common Interchange Format CIF Common Intermediate Format (Video) CIF Controlled Interflow CIFE Council of European Industrial FEderations CIFF Camera Image File Format CIFS Common Internet File System CIG Calling subscriber Identification CIG Cell Interconnection Gateway CIG Cellular Infrastructure Group CIGREF Club Informatique des Grandes Enterprises Francais CIH Class Inheritance Hierarchy CII Call Identity Index CII Code for Information Interchange (FIPS) CII Common Interoffice Interface CII Continuing Industry Interaction CII MDII: Initial Address Message Signaling Irregularity CIID Card Issuer Identification Code CIID Card Issuer Identifier CIIL Control Intermediate Interface Language CIL Call Information Locator CIL Call Instruction List CIL Communication Identification Line CIL Compatible Issue Lineup CIL Component Integration Laboratories CILS CPE Industry Liaison Subcommittee CIM Common Information Model CIM Compaq, Intel, and Microsoft CIM CompuServe Information Manager CIM Computer Integrated Manufacturing CIM Corporate Information Model CIM Cryptographic Information Management CIM Curo Image Manager CIM Customer Information Management CIMAP Circuit Identification Maintenance Administration Position CIME Customer Installation Maintenance Entity CIMECO Centro Italiano Metodologie di Controllo CIMF Customer Installation Management Function CIMIT Crescendo IPC Messaging Interface Tool CIMOM Common Information Model Object Manager CIMS Computer Integrated Manufacturing System cin C++ Input Stream CIN Customer Identification Number CINFO Compiler Information CIO Channel Input/Output CIO Chief Information Officer CIO Counter/Timer and Parallel I/O CIOA Classical IP over ATM CIOE Cabinetized Input/Output Equipment CIP Carrier Identification Parameter CIP C-Bus Interface Paddle Board CIP CDMA Interface Peripheral cip Central Interested Party CIP Classical IP CIP Classifier Interface Program CIP Command Interpreter Preprocessor CIP Command Interpreter Prompting CIP Common Image Part CIP Continuous Improvement Program CIP Critical Indicator Panel CIP Customer Interaction Program CIPE Cabinetized International Peripheral Equipment CIPOA Classical IP over ATM CIPSO Commercial IPSO CIPX Compressing IPX CIR Calling Line Identity Request Signal CIR Carrier-to-Interference Ratio CIR Channel-to-Interference Ratio CIR Circular CIR Circular Hunt(ing) CIR Clock Interrupt Register CIR Committed Information Rate CIR Coprocessor Interface Register CIRC Cross Interleave Reed-solomon Code (Compact Disk) CIRF Co-channel Interference Reduction Factor CIRM Comité International Radio-Maritime CIS Card Information Structure CIS CDMA Interconnect System CIS Center for Integrated Systems CIS Commonwealth of Independent States CIS Communications Interim Standard CIS CompuServe Information Service CIS Computer and Information Science CIS Computing and Information Science CIS Contact Image Sensor CIS Content Information System CIS Creation Interface Selection CISC Complete Instruction Set Computer CISC Complex Instruction Set Computer CISC Complex Instruction Set Computing CISG Change ISDN Service Group CISM Cabinetized Integrated Services Module CISPR Comite International Special des Perturbations Radioelectrique (in IEC) CISPR Comite International Special des Peturbations Radioelectriques CISPR International Special Committee on Radio Interference CISPR International Special Committee on Radio Interference (in IEC) CISPR Internationaler Sonderausschuß für Funkstörungen (im IEC) CISR Channel Interrupt Status Register CISS Call-Independent Supplementary Services CIT Committee for Innovation and Technology transfer CIT Compagnie Industrielle des Telecommunications CIT Computer Integrated Telephony CIT Craft Interface Terminal CITE Citation (HTML tag) CITEL Comison Interamericana de Telecommunicaciones CITEL Inter-American Telecommunications Commission CIU CDMA Interface Unit CIU Cellular Controller Interface Unit CIU Complete Interface Unit CIU Control and Indication Unit CIU Craft Interface Unit CIUG California ISDN Users Group CIV Cell Interarrival Variation CIV Conversation Interface Verb (LU6.2) CIW Call Information Window CIW Container Identification Word CIX Commercial Internet Exchange CIX Compulink Information Exchange CJ Coin Junctor CJ Committee of Justice (EEC) CJK Chinese, Japanese, and Korean CJK-JRG Chinese/Japanese/Korean Joint Research Group CK Check Bit CK Check Bits CK Cipher Key CK Ciphering Key CK ISO country code for Cook Islands CKD Count Key Data CKD Count, Key, Data CKE Commercial Key Escrow CKEY Encrypted KEY CKF MDII: Continuity Check Failure CKLN Change Keyset LEN CKO Checking Operator CKR Commercial Key Recovery CKSN Cipher Key Sequence Number CKSN Ciphering Key Sequence Number CKT Circuit CKT-ID Circuit Identification CL Call Leg CL Cathodeluminescence CL Cell Loss CL Circuit Layout CL Claim CL Computer Language (periodical) CL Congestion Level CL Connectionless CL Control Leader CL Count Register Low Half CL Cutter Location CL ISO country code for Republic of Chile CL1 Congestion Level 1 CL2 Congestion Level 2 CL3 Congestion Level 3 CLA Carrier Local Agent CLA Carry Look-Ahead CLA Competitive Local Access CLAM Coin Line Activity Monitoring CLAMN Called Line Address Modification Notification CLAMN Called Line Address Modified Notification CLAN Connectionless CLAN Cordless Local Area Network CLANS Cordless Local Area NetworkS CLASP CLASS Plus CLASS Crisp and Linguistic Analysis of Structured Scenarios CLASS Custom Local Area Signaling Services CLASS Custom Local Area Signalling Services CLAT Communication Line Adapter for Teletype CLB Clear Back CLB CLear-Back signal CLB Corel Library File CLBW Closed-Loop BandWidth CLC Carrier Liaison Committee CLC CeneLeC CLC Corporate Lab Council CLCD Clear Confirmation Delay CLCE Cabinetized Line Concentrating Equipment CLCSE Close Logical Channel Signalling Entity CLD Called CLD Called Number CLD Called Party CLD Collected Digits CLDM Corporate Logic Data Model CLDN Calling Line Directory Number CLDS Connectionless Data Service CLDT Common Language Datatypes CLE Customer Located Equipment CLEC Competitive CLEI Common Language Equipment Identification CLEI Common Language Equipment Identifier CLEO Common Language Equipment Order CLF Calling Line Flash CLF Calling Line Identification On Flash CLF Calling Line Identity by Flash CLF Carrier Line Failure CLF Clear Forward message CLF Clear-Forward signal CLF Common Log Format CLF Higher layer connectionless channel (fast) CLFI Common Language Facility Identifier CLG Calling CLG Calling Number CLG Calling Party CLGE Cabinetized Line Group Equipment CLHR Cache, Line-Holding Register CLI Callable Level Interface CLI Calling Line Identification CLI Calling Line Identifier CLI Calling Line Identity CLI Calling Line Information CLI Call-Level Interface CLI CLear Indication CLI Clear Interrupt CLI CLear Interrupt mask CLI Command Line Interface CLI Command Line Interpreter CLI Compression Labs Inc. CLID Calling Line Identification CLID Calling Line Identification Display CLID Calling Line Identity Delivery CLIF Calling Line Identification with Flash CLIM Cabinetized Link Interface Module CLIP Calling Line Identification Presentation (supplementary service) CLIP Calling Line Identity Presentation CLIP Cellular Logic Image Processor CLIR Calling Line Identification Restriction (supplementary service) CLIR Calling Line Identity Restriction CLIST Command List CLIST Commands List CLK Clock CLLCC Ceramic LeadLess Chip Carrier (IC Package) CLLI Common Language Location Identification CLLI Common Language Location Identifier CLLM Consolidated Link Layer Management CLM Career Limiting Move CLM Congested-Link Method CLMI ISDN Cabinetized Line Module CLMS ConnectionLess Message Service CLN Change LEN CLNAP Connectionless Network Access Protocol CLNE Customer Located Network Equipment CLNI Connectionless Network Interface CLNIP Connectionless Network Interface Protocol CLNP Connectionless Network Protocol CLNS Connectionless Network Services CLNS ConnectionLess-mode Network Service CLOAX Corrugated-Laminated Coaxial Cable CLOG Call Logging C-Log Call History log CLONES Central Location On-Line Entry System CLOS Common LISP Object System CLP Cell Loss Priority CLP Constraint Logic Programming CLP Consultant Liaison Program CLPID Called Party ID CLR Cell Loss Rate CLR Cell Loss Ratio CLR Circuit Layout Record CLR Clear CLR Clear Call CLR CLear Request CLR Clock Recovery CLR Combined Line and Recording CLR Compensation Log Record CLR Connectionless Routing CLRC Circuit Layout Record Card CLRD Clear Request Delay CLRR Circuit Loudness Rating, Receive CLRS Circuit Loudness Rating, Send CLS Closed CLS Combined Link Set CLS Connectionless Server CLS Connectionless Service CLS higher layer ConnectionLess channel (Slow) CLSF Connectionless Service Function CLSI Custom Large-Scale Integration CLSID Class ID CLSID Class Identifier CLSR Combined Link Set Routing CLSUP Call Supervisor Key CLTA Comite de Liaison des Telecommunications Trans-Atlantiques (CEPT) CLTG Change Line Treatment Group CLTP Connectionless Transport Protocol CLTS Connectionless Transport Service CLU Calling Line Identity Unavailable CLU Network Cluster CLUI Command-Line User Interface CLUT Color Lookup Table CLV Constant Linear Velocity CLW ClassWizard file CM CM Calendar of Meetings (ETSI) CM Call Memory CM Call Model CM Carrier Maintenance cm Centimeter(s) CM Chairmen's Meeting (ETSI) CM Class Manager CM Class Mark CM Common Memory CM Common Mode CM Communication Management CM Communication Module CM Communications CM Component Manager CM Computing Module CM Conference Management CM Configuration Management CM Configuration Manager CM Configuration Map CM Connection Management CM Connection Manager CM Connection Memory CM Continuity Message CM Continuous Media CM Control Memory CM Correlated Message CM ISO country code for United Republic of Cameroon C-M Control-Monitor CM OA Configuration Management Operations Application CM2 Communication Module model 2 CM2C Communications Module 2 Compact CMA Call Management Agent CMA Changeover Memory Arbitration CMA Communications Managers Association CMA Constant Modulus Algorithm CMA Construction and Maintenance Agreement CMA Customized Announcement CMAC Centralized Monitoring and Assistance Center CMAC Complex Multiple ACcumulator (IBM) CMAC Control Mobile Attenuation Code CMAE Channel Management Application Entity CMAK Connection Manager Administration Kit CMAP Captive Office MAP CMAP Centralized MAP CM-API Consolidated Management Application Programming Interface CMAS Cellular Management System CMB Connection Maintenance Busy CMB Connection Memory Block CMB Cyclic redundancy check Message Block CMBH Complex Instruction Buried Heterostructure CMBO Combination of Flat Rate and Message Rate CMBS Circuit Mode Bearer Service CMC Cable Maintenance Center CMC Call Modification Completed message CMC Career Management Center CMC Cellular Mobile Carrier CMC Central Message Controller CMC Centralized Management Center CMC Coherent Multi-Channel CMC Combining Multicast Control CMC Common Mail Calls CMC Common Messaging Calls CMC Communication Management Configuration CMC Communication Mode Control CMC Communications Management Center CMC CoMplement Carry CMC Computer-Mediated Communication CMC Connection Management Computer CMC Connection Memory Controller CMC Connectionless Message Control CMCE Circuit Mode Control Entity (TETRA) CMCF Control Multiple Call Forwarding CMCU Communication Module Control Unit CMD Circuit-Mode Data CMD Command CMDC Computing Module Duplex Cabinet CMDF Combined Main Distribution Frame CMDF Command Masking Data Facility CMD-IS Circuit-Switched Mobile Data Intermediate System CMDR Centralized Message Detail Recorder CMDR CoMmanD Reject (HDLC, LAP) CMDS Centralized Message Data System CMDS Centralized Message Distribution System CME Circuit Multiplication Equipment CME Circuit Multiplication Equipment CME Conformant Management Entity CME Connection Management Entity CM-ES Circuit-Switched Mobile End System CMF Channel Matched Filter CMF Class Manager Framework CMF Compelled Multifrequency CMF Control and Monitoring Function CMF/PDB Capacity Management Facility Performance Data Base (SNA) CMFJ Call Modification Reject message CMgr Call Manager CMHT Call Mean Hold Time CMHTBLT Circuit Mode Hunt Terminal Busy Limit Type CMI Cluster Member Identifier CMI Code Management Interface CMI Code Mark Inversion CMI Coded Mark Inversion CMI Coding Method Identifier CMI Common Metallic Interface CMI Computer Managed Instruction CMI Control Mode Idle CMI Cross-Matrix Index CMIB Circuit Mode Intercom Calls Billing Records CMIC Computing Module Interface Card CMIM Common Management Information Model CMIP Common Management Information Protocol CMIPDU CMIP Data Unit CMIPDU Common Management Information Protocol Data Unit CMIPM CMIP Machine CMIPM Common Management Information Protocol Machine CMIS Cabinetized Miscellaneous Equipment Cabinet CMIS Common Management Information Service CMISE Common Management Information Service Element CMIT Common Management Information Transmission CML Cell Maximum Power Level CML Chemical Markup Language CML Chemical Multilayering CML C-Side Message Link CML Current Mode Logic CMM Call Mode Modem CMM Capability Maturity Model CMM Channel Mode Modify CMM Communications Memory Management CMM Computer Main Memory CMMU Cache/Memory Management Unit CMN Communication of MCU Number CMN Control and Maintenance Network CMO Common Mode Operation CMOA Configuration Management Operations Application CMOL CMIP over LLC CMOL CMIP Over Logical Link Control CMOS Comparison Mean Opinion Score CMOS Complementary Metal-Oxide Semiconductor CMOT CMIP Over TCP/IP CMOT Common Management Information Services Protocol Over TCP/IP CMOT Common Management Over TCP CMP Camp-On CMP Channel Management Procedure CMP Chemical-Mechanical Polishing CMP Communications Module Processor CMP Communications Plenum Cable CMP Compare CMP Component Portion CMP Computing Module Processor CMP Connection Management Protocol CMP Continuous Multicast Push CMPT Completion Tone CMR Call Modification Request message CMR Cell Misinsertion Rate CMR Cell Misinsertion Ratio CMR Cellular CMR Centralized Mail Remittance CMR Channel Mode Register CMR CLASS Modem Resource CMR Common Mode Rejection CMR Communications Riser Cable CMRA Common Maintainable Resource Aggregate CMRJ Call Modification Reject message CMRR Common Mode Rejection Ratio CMRS Cellular Mobile Radio System CMRS Cellular Mobile Radio Telecommunications Service CMRS Commercial Mobile Radio Services CMRT Cellular CMS Call Management Services CMS Call Management System CMS Call Manager Service CMS Cellular Mobile Switch CMS Certification Mark Support CMS Change Management System CMS Circuit Maintenance System CMS Circuit Multiplication System CMS Code Management System CMS Color Management System CMS Combined Message Switch CMS Connection Management Software CMS Control and Measurement System CMS Conversational Monitor System (IBM) CMSA Consolidated Metropolitan Statistical Area CMSDB Call Management Services Database CMSDB Call Management System Database CMSG "C" Message Weighting CMSM Computing Module Summary CMSO Centralized Mobile Switching Office CMSS Cabinetized Miscellaneous Spares Storage CMT Cadmium Mercury Telluride (IR Detector) CMT Cartridge Magnetic Tape CMT Character Mode Terminal CMT Connection Maintenance CMT Connection ManagemenT (FDDI) CMT Correlated Message Traffic CMTS Cellular Mobile Telephone System CMTS Centralized Maintenance Test System CMTS Connection Mode Transport Service (CMNS/CONS) CMU Card Maintenance Unit CMU Carnegie Mellon University CMV Circuit-Mode Voice CMV Common Mode Voltage CMVC Configuration Management and Version Control CMW Compartmented-Mode Workstation CMWI CLASS Message Waiting Indication CMWI CLASS Message Waiting Indicator CMX Connection Memory Control CMX Connection Memory Controller CMX Corel Metafile Exchange CMY Cyan, Magenta, Yellow CMYK Cyan, Magenta, Yellow, Black CN Cable Network CN Calling Number CN CaNcel CN Check Not OK CN Coin Trunk CN Combined Delivery/Non-Delivery Notification CN Complete Number CN Congestion Notification CN Connect CN Connected Number CN Core Node CN Corporate Network(s) CN Customer Network CN ISDN Calling Number Identification Services CN ISO country code for People's Republic of China C-n Container-Level n CNA Calling Number Announcement CNA Cascaded Network Architecture (as opposed to BNA) CNA Communication Network Architecture (ITT Inc.) CNA Connection Not Active CNA Connection Not Admitted message CNA Cooperative Networking Architecture (Concert-BT) CNA Customer Name and Address CNA DMS-100 North America CNAB Calling Name Delivery Blocking CNAB Calling Name Delivery Blocking Toggle CNABACC Calling Name Delivery Blocking Access Code CNABBL Calling Name Delivery Blocking Billing Records CNAC Call Not Accepted Treatment CNAC CCIS Network Administration Center CNAD Calling Name Delivery CNAM Calling Name Delivery CNAMAC Calling Name Delivery Active/Inactive Status CNAMBL Calling Name Delivery Billing Records CNAMD Calling Name Delivery CNAMD Calling Name Display CNAME Canonical Name CNAMPN Calling Name Delivery with Personal Name Delivery Type CNB Calling Number Blocking CNB Consumer News and Business CNC Centralised Network Control CNC Computer Numeric Control CNC Computer Numerical Control CNC Computer Numerically Controlled CNC Computer(ized) Numeric Control CNCC Customer Network Control Center CNCS Carrier Non-Compatible Services CND Called Party Number CND Calling Name Delivery CND Calling Number Delivery CND Calling Number Display CND Calling Party Number Delivery CND Carrier Networks Documentation CND Customer Network Design CNDA Calling Number Delivery Activation CNDAC Calling Number Delivery Active/Inactive Status CNDB Calling Number Delivery Blocking CNDB Customer Number Data Base CNDBO Calling Number Delivery Blocking Override CNDBTYP Calling Party Number Delivery Blocking Type (Privacy Change Allowe d) CNDD Calling Number Delivery Deactivation CNDS Customer Network Design System CNDTYP Calling Party Number Delivery Type CNE Certified NetWare Engineer CNE Certified Novell Engineer CNET Centre National d'Etudes des Telecommunications CNET Control Network CNF Conference CNF Conjunctive Normal Form CNF Station Controlled Conference CNF6 Six-Way Conference Calling CNFL Conference Calling, Larger Than Six-Way CNFLSZ Conference Calling, Larger Than Six-Way, Size CNG Calling Tone CNG Carrier Networks Group CNG Comfort Noise Generation CNG Comfort Noise Generator CNG Calling Tone CNI Calling Number Identification CNI Changed Number Interception CNI Common Network Interface CNI Customer Premises Equipment Network Integrator CNIBL Calling Number Information Delivery Billing Records CNIBLP Calling Number Information Delivery Billing Records for PRI CNIC Calling Number Identification Circuit CNIC Clearing Network Identification Code CNID Calling Number Identification CNID Customer Network Information Database CNIDR Clearinghouse for Networked Information Discovery and Retrieval CNIL Conseil National Informatique et Liberte (F) CNIMS Customer Network Integrated Management System CNIP Calling Name Identification Presentation CNIP Calling Number Identification Present CNIPPAB Calling Number Identification Public-to-Private and Private-to-Public Activation Billing Records CNIPPABP Calling Number Identification Public-to-Private and Private-to-Public Activation Billing Records for PRI CNIR Calling Number Identification Restricted CNIR Calling Number Identification Restriction CNIR Calling/Connected Name Identification Restriction CNIS Calling Number Identification Services CNIS Computer Networks and ISDN Systems CNL CoNnectionLess CNL Constant Net Loss CNL Cursor Next Line CNM Called Number Mask CNM Circuit Network Management Message Group CNM Communication Network Management CNM Communication Network Management (NetView, VTAM) CNM Connection Memory CNM Customer Network Management CNMA Communication Network for Manufacturing Applications (MAP/MMS) (ES PRIT) CNMC Corporate Network Management Center (CWAN-ATT) CNMI Communication NM Interface (SNA) CNMS Customer Network Management Services CNN Cable News Network CNNB Calling Name and Number Blocking CNND Calling Name and Number Delivery CNOS CCIS Network Operations System CNP Charge Number Parameter CNP Connection Not Possible CNR Carrier-to-thermal Noise Ratio CNR Complex Node Representation CNR Could Not Reproduce CNRI Corporation for National Research Initiatives CNS Communication Network Service CNS Communication Network Support CNS Connected Party Subaddress CNS Connection Not Successful CNS Customer Network Solutions CNS Customer Networking Solutions CNSS Core Nodal Switching Subsystem CNT Coaxial Network Termination CNTX Centrex CNU Coaxial Network Unit CNV Conversion File CO Call Offer (supplementary service) CO Call Origination CO Captive Office CO Cavity Oscillator () CO Central Office CO Certificate of Origin CO Check OK CO Circuit Order CO Code Owner CO Coin CO Coinbox CO Combining CO Conditional Objective CO COnnection CO Connection Oriented CO Connection-Oriented mode CO Control Out CO Crystal Oscillator CO Cutoff CO ISO country code for Republic of Colombia CO U.S. postal code for Colorado CO ID Company Identification COA Changeover Acknowledgement message CO-ACD Central Office-Automatic Call Distribution COAM Centralized Operation, Administration, and Maintenance COAM Customer Owned and Maintained COAM Customer Owned And Maintained (equipment) COARS Central Office Alarm Reporting System COAX Coaxial Cable COB Chip On Board COB Close of Business COB CO Booking COB COBOL File COB Complaint Observing COBCLI CO Booking Command Line Interface COBI Connection-Oriented Bearer-Independent COBOL Common Business-Oriented Language COBRAnet Corporate Broadband Applications Network COBS Central Office Business Systems COBS Consistent Overhead Byte Stuffing COBUCO Cordless Business Communications COC Central Office Code COC Code Owners Consortium COC Compiler Object Code COC Consultation Calling COC Current Operations Channel COCF Connection Oriented Convergence Functions COCF Connection-Oriented Convergence Function COCOM Coordinating Committee for Multilateral Export Controls COCOS Corporate Communication System COCOT Customer-Owned Coin Operated Telephone COCS Conversion of Created Services COD Connection Oriented Data COD Cross-Office Delay COD Cutoff on Disconnect CODACS Captive Office Digital Access Cross-connect System CODAN Carrier-Operated Device, Anti-Noise CODARTS Concurrent Design Approach for Real-Time Systems CODASYL Conference On Data Systems Languages CODC Central Office Data Collector CODEC Coder/Decoder CODES Central Office Data Engineering System CODEST COmite de Development European de la Science et de la Technologie CODETEL Compania Dominicana de Telefonos CODIT Code Division Testbed CODP Central Office Data Processor CODS Connection Oriented Data Service COE Central Office Equipment COEES Central Office Equipment Engineering System COEI Central Office Equipment Installation COEM Commercial Original Equipment Manufacturer COEO Central Office Equipment Order COER Central Office Equipment Report COF Cause of Failure COF Cinema of the Future COF Confusion signal COF Continuity Failure COF Cursor Off COF MDII: Confusion Signal Received COFA Change of Frame Alignment COFDM Coded Orthogonal Frequency Division Multiplex COFDM Coded Orthogonal Frequency Division Multiplexing C-OFDM Convolutional coding OFDM COFF Common Object code File Format COFF Common Object File Format COFIDEC Coder-Filter-Decoder COG Central Office Ground COG Centralized Operations Group COG Code Owners Group COH Common Overhead COH Communication Overhead COH Connection Overhead COHO CoHerent Oscillator COI Community of Interest COI Connection-Oriented Interconnection COIC Central Office Interface Circuit COIN Coin Phone Operational and Information Network System COKOL Corporate Knowledge On Line COL Collect COLA CO Lab Access CO-LAN Central-Office LAN (BOC) COLI COnnect Line Identity COLI COnnected Line Identification (functional entity) COLI Connected Line Identity COLP COnnected Line identification Presentation (supplementary service) COLR Carrier of Last Resort COLR Circuit Order Layout Record COLR Connected Line Identification Restriction COLR COnnected Line identification Restriction (supplementary service) COLT City of London Telecom COLT Connection Optimized Link Technology COM Cable Organizer Module COM Central Office Maintenance COM Combined Carrier COM Comedy Central COM Command COM Command File com Commercial organizations domain COM Common COM Common Object Model COM COMmunication COM Communications COM Compact Executable file COM COMplete COM Complete COM Component Object Model COM Computer Output Microfilm COM Computer Output Microfilming CoM Connection Manager COM Continuation of Message COMA Cache-Only Memory Architecture COMAC Comite d'Actions Concertees COMAS Computerized Maintenance and Administration Support COMB Combined COMB Load Combined COMDAT Common Data COMDEX Computer Dealers Exposition COMETT COMmunity programmme for Education and Training for Technology COMFGD Combined Feature Group D COMMS Central Office Maintenance Management System COMMS-PM Central Office Maintenance Management System-Preventive Maintenanc e COMPAC Commonwealth Pacific Cable submarine cable COMPAC COMputer oriented PArt Coding COMPASS Central Office Maintenance Printout Analysis (GTE) COMPASS Communications Program for Advanced Switching Services COMPASS Communications Programs for Advanced Switched Services COMPENDEX COMPuterized ENgineering inDEX COMPVH Compiler Virtual Hex (Test Case Language Compiler) COMS Connection Oriented Message Service COMSAT Corporation COMSEC Communications Security COMSOC IEEE Communications Society COMSOFT Consortium for the Management of Emerging Software Technologies CON Call Connect CON Concentrator CON Conference Calling CON Connect message CON Connected Party Number CON Connection Connected CON Connection oriented CON Conversation CON Cursor On CONCERT Communications for North Carolina Education, Research, and Technol ogy COND Conditional CONF , Add On (supplementary service) CONF Conference Calling CONF Conference Circuit Conf Confirm CONF Confirm CONF Confirmation CONF Confusion message CONG Congestion CONG Congestion message CONI COnnect Number Identity CONLAN CONsensus LANguage CONMAN Connection Manager CONN CONNect CONN Connect message CONN Connection CONN Connection Manager CONN Connector CONN ACK Connect Acknowledge message CONNACK CONNect ACKnowledgement ConnND Connected Number Delivery ConNo Connected Number CONP COnnect Number identification Presentation CONP Connection Not Possible Treatment CONP Connection-Oriented Network Protocol CONS Connection Oriented-mode Network Service CONS Connection-Mode Network Service CONS Connection-Oriented Network Services CONS Console CONT Connection Server CONT Connections Team CONT Continue CONT Controller CONUS Contiguous United States CONV Conventional COO Changeover Order message COO Chief Operating Officer COO Cost of Ownership COOP Center for Object-Oriented Programming COORS CO Ordering and Report System COOTS Conference on Object-Oriented Technologies and Systems COP Center of Projection COP Character Oriented Protocol COP Character-Orientated Protocol (Data Comm.) COP Code Of Operation COP Code Of Practice COP Code of Practice COP Complex Operations Parameters COP Complicated Outpulsing COP Computer Operating Property COP Controller Oriented Processor COP Control-Oriented Processor COPES Customer Optimized Product Engineering System COPOLCO ISO council COmmittee on COnsumer POLicy COPQ Cost of Poor Quality COPS Circuit Order Preparation System COPS Complex Operations Per Second COPS Cutover Preparation Services COPT Customer Operated Pay Telephone COPT Customer Owned Pay Telephone COPWAT Customer-Owned Premises Wiring Acceptance Test COQ Cost Of Quality COR Carrier Operated Relay COR CORrelator Cor Corrigendum COR Corrupt Parameter CORA Call Rater CORBA Common Object Request Broker Architecture CORC Customer-Originated Recent Change CORDIC Coordinate Rotation Digital Computer CORDS Coordination of Record and Data Base System CORE Internet Council of Registers COREPER COmite des REpresentants PERmanents CORP Career Opportunity Rotational Program CORR Centralized Office Release Record CORT Code Owner Request Tracking CORUM Captive Office Remote User-area Menu CORWAN Corporate Wide-Area Network COS Call Origination Status COS Camera Operating System COS Class of Service CoS Class of Service COS Common Object Services COS Communication OS COS Connection Oriented Services COS CORBA Object Services COS Corporation for Open Systems COSAC Canadian Open Systems Application Criteria COSE Common Open Software Environment COSE Common Open Systems Environment COSINE Corporation for Open Systems Interconnection Networking in Europe COSMIC Common Systems Main InterConnecting COSMOS Computer System for Mainframe Operations COSP Central Office Signaling Panel COSPAR COmmittee on SPAce Research COSS Central Office Switching System COSS Common Object Service Specification COSS1 Common Object Service Specification Volume 1 COSS2 Common Object Service Specification Volume 2 COSS3 Common Object Service Specification Volume 3 COSS4 Common Object Service Specification Volume 4 COSS5 Common Object Service Specification Volume 5 COST Class of Service Tone COST Cooperations Projects of Scientific and Technical Research COST European Cooperation in the Field of Science and Technology COSTAR COmputer STored Ambulatory Record (Medical) COSTAR Conventional On-line STorage And Retrieval COSU Central Office Service Unit COSW Electronic Switching: Central Office Systems of the World; Amos E. Joel Jr.; IEEE Press, 1976 COT Central Office Terminal COT Continuity COT Continuity Check message COT Continuity Message COT Continuity Signal COT Continuity Test COT Continuity Test message COT Continuity Test Transceiver COT Continuity Testing COT Customer Originated Trace COTAC Customer Originated Trace Status COTC Canadian Overseas Telecommunication Corporation COTDR Coherent Optical Time Domain Reflectometer COTES COnventional TErrestrial reference System COTi Continuity Indicator COTM Customer Owned and Maintained COTP Connection-Oriented mode Transport Protocol COTS Commercial Off-The-Shelf COTS Connection-Oriented mode Transport Service COTS Connection-Oriented Transport Service COURT C.O. User Request Tracking cout C++ Output Stream COV Changeover COV Changeover signal COVER Captive Office Vintage Equipment Records COW Copy On Write CP Call Pickup CP Call Process CP Call Processing CP Call Processor CP Call Program CP Card Punch CP Central Processor CP Choke Packet CP Circuit Pack CP Circular Polarization CP Closed Pending CP Code Page CP Collision Presence CP Common Part CP Communication(s) Processor CP Complete Partitioning CP Confirmed Party CP Connected Party CP Connection Pending CP Connection Performer CP Connection Point CP Connection Processor CP Contention Period CP Control Point CP Control Processor CP Control Program CP Copy Protected CP Critical Path CP Current Product CP Customer Premises CP Customer Programmability CP Customer Programmable CP/M Control Program/Microcomputer CP/M Control Programme for Microcomputers CPA Called Party Address CPA Carry-Propagate Adder CPA Circuit Pack Assembly CPA CLASS Protocol Analyzer CPA Component Placement Agreement CPA Control Point Adapter CPA Co-Polar Attenuation CPA Critical Path Analysis CPAAL5 Common Part of AAL5 CPAD Call Processing Agency Driver CPAN Comprehensive Perl Archive Network CPAP Customer Premises Access Profile CPARK Attendant Call Park CPB Call Processing Busy CPB Commercial CPB Communication Processor Block CPB Constrained Parameters Bitstream CPB Corporation for Public Broadcasting CPC Call Processing Control CPC Calling Party Category CPC Calling Party Control CPC Carrier Portability Code CPC Cell Personality Card CPC Common Part Code CPC Common Peripheral Controller CPC Common Product Code CPC Common Protocol Component CPC Component Procurement Code CPC Continuing Professional Competency CPC Corporate Product Code CPCCI Conference Permanente des Chambres de Commerce et d'Industrie CPCE Common Peripheral Control Equipment CPCH Calling Party Cannot Hear CPCI Call Processing Control, Incoming CPCI Calling Party Category Indicator CPCI ISDN Common Peripheral Control CPCL Call Processing Class Library CPCO Call Processing Control, Outgoing CPCS Common Part Convergence Sublayer CPCS Customer-Provided Communication System CPD Call Processing Deloading CPD Call Processing Description CPD Central Pulse Distributor CPD Computer Products Division CPD Connection Propagation Delay CPD Cross Polar Discrimination CPD Cumulative Probability Distribution CPDC Cabinetized Power Distribution Center CPDDN Calling Party Default DN(s) CPDM Call Processing Domain Model CPE Call Processing Enabled CPE Central Processing Element CPE Channel Parameter Estimator CPE Customer Premises Equipment CPE Customer Provided Equipment CPEI ISDN Common Peripheral Equipment CPF Coin, Pay First CPF Convolutional, Parity, Fire CPFC Cost Per Function Code CPFR Calling Party Forced Release CPFSK Continous-Phase Frequency Shift Keying CPFSK Continuous Phase Frequency Shift Keying CPFT Circuit-Pack Functional Test CPFT Customer-Premises Facility Terminal CPG Call Pickup Group CPG Call Pickup Groups CPG Call Processing Message CPG Call Progress message CPG Circuit Pack Group CPG Clock Pulse Generator CPG Code Page CPG Conference Preparatory Group CPG1 Call Pickup- Pickup Group 1 CPG2 Call Pickup- Pickup Group 2 CPG3 Call Pickup- Pickup Group 3 CPG4 Call Pickup- Pickup Group 4 CPGA Ceramic Pin Grid Array (IC VLSI Package) CPGACC Call Pickup Group Access Codes CPH Call Party Handling CPH Called Party Hold CPH Calls Per Hour CPH Characters Per Hour CPHB Computer Protocol Heart Beat CPI Cable Pair Identification CPI Call Progress Indication CPI Call Progress Indicator CPI Calling Party Identification CPI Central Patents Index CPI Characters Per Inch CPI Common Part Indicator CPI Common Programming Interface CPI Communication Programming Interface CPI Computer-to-PBX Interface CPI Convergence Sublayer Protocol Information CPI CPE Interface CPI Cycles Per Inch CPI Cycles per Instruction CPI-C Common Programming Interface for Communications CPID Call Processing Identifier CPID Calling Party Identification CPIW Customer-Provided Inside Wire CPK Call Park CPKBAS Call Park Basic CPKDIR Directed Call Park CPKSEC Directed Call Park with Security Code CPL Capability Password Level CPL Commercial Private Line CPL Control Panel Applets File CPL Current Privilege Level CPL Cursor Preceding Line C-PLANE Control PLANE C-plane Control plane CPLD Complex Programmable-Logic Device CPM Cabinetised Peripheral Module CPM Call-Progress Monitor CPM Cards Per Minute CPM Central Processor and Memory CPM Common Peripheral Module CPM Common Process Model CPM Communications Processor Module CPM Compact Peripheral Module CPM Condensed Peripheral Module CPM Conductive Plastic Material CPM Conference Preparatory Meeting CPM Continuous Phase Modulation CPM Co-ordination and Project team Management department (ETSI) CPM Core Package Modules CPM Counts Per Minute CPM Critical Path Method CPM Critical-Path Method CPM Customer Profile Management CPM Cycles Per Minute CPMGR Connection Point Manager CPMS Cable Pressure Monitoring System CPN Calling Party Number CPN Cellular Provider Network CPN Customer Premise(s) Network CPN Customer Premises Node CPNDC Calling Party Number Discard Control CPNIE Calling Party Number Information Element CPNM Call Processing Notification Manager CPN-NP Calling Party Number-Network Provided CPNPA Calling Party Number Presentation Allowed CPNPN Calling Party Number Provision Necessary CPNT Calling Party Number Delivery Type CPN-UPNS Calling Party Number- User-Provided, Not Screened CPNX Computer Protocol Network Executive CPOCC Call Processing Occupancy CPODA Contention Priority-Oriented Demand Assignment CPOK Smalltalk C Programming ObjectKit CPOL Communications Procedure-Oriented Language CPOS Centralized AMA Position cpp C Preprocessor CPP C++ File cpp C++ File CPP Call Processing Protocol CPP Calling Party Pays CPP Common Peripheral Processor CPP Component Project Plan CPP Cordless Portable Part CPP Customer Partnership Program CPPEC Circuit Pack PEC CPR Call Path Restoration CPR Call Processing Record CPR Change Process Re-engineering CPR Continuing Property Records CPR Continuous Progress CPR Critical Path Restoration CPR Critical Path Restoration CPR Current Page Register CPR Cursor Position Report CPR Customer Problem Report CPR1 Channel Priority Register 1 CPR2 Channel Priority Register 2 C-PRK Call Park CPRTE Call Processing Run-Time Environment CPS Call Processing Selector CPS Call Processing Server CPS Calling Party Sub-Address cps Calls Per Second CPS Cards Per Second CPS Cellular Packet Switch CPS Characters Per Second cps Characters Per Second CPS Circuit Pack Storage CPS Common Part Sublayer CPS Content Provider System CPS Conversation Programming System CPS Corporate Presence Server CPS CP Selector CPS Customer Premises System CPS Cutoff Priority Scheme cps Cycles Per Second cps cycles per second (obsolete, now Hz) CPSA Calling Party Subaddress CPSD Calling Party Subaddress Delivery cpsel CP Selector CPSG Call Park Subscriber Group CPSIE Calling Party Subaddress Information Element CPSK Coherent Phase-Shift Keying CPSL Confirmed Party Service Link CPSR Computer Professionals for Social Responsibility CPST Control Point Spanning Tree CPT Call Progress Tone CPT Carolina Public Television CPT Cisco Protocol Translator CPT Coinless Public Telephone CPT Completion Tone CPT Customer-Provided Terminal CPTE Customer Premises Terminal Equipment CPTLB Call Processing Terminal Linkage Block CPTP Consolidated Product Test Plan CPTS Coinless Public Telephone Service CPU Call Pickup CPU Central Processing Unit CPU Central Processor Unit CPUACC Call Pickup Access Codes CPUB Call Pickup Billing Records CPUBEX Call Pickup for the Business Environment CPUDDN Directed Call Pickup CPUDPU Directed Call Pickup with Barge-In CPUFW CPU Firmware CPUN Call Pickup Notification CPUPEX Call Pickup for the Public Environment CPVDN Calling Party Valid DNs CPW Co-planar Waveguide CPY Copy Backup Catalog File CQ Channel Queue CQ Communications Quality CQA Call Queue Assignment CQA Certified Quality Auditor CQA Custom Quality Audit CQC Cell Queue Controller CQFP Ceramic Quad Flat Package CQM Cell Queue Manager CQM Circuit group Query Message CQM Circuit Query Message CQR Circuit group Query Response message CQR Circuit Query Response message CR Call Record CR Call Reference CR Call Report (TETRA) CR Call Request CR Call Restriction (supplementary service) CR Call Router CR Card Reader CR Carriage Return CR Carrier Recovery CR Channel Response CR Chrominance colour difference, Red CR Clear Record CR Cluster Robustness Tested CR Code Restriction CR Coin Return CR Comite de coordination des Radiotelecommunications (CEPT) CR Command Register CR Component Request CR Condition Register CR Conditional Requirement CR Configuration Record CR Connection Request CR Connection-Related function CR Content Review CR Contention Resolution CR Control Register CR Critical CR Customer Record CR Customer's Report CR ISO country code for Republic of Costa Rica Cr Red Chrominance CR/D Code Restriction and Diversion CRA Call Record Assembler CRA Call Request Activate CRA Call Routing Apparatus CRA Call-Request Activation CRA Circuit Reservation Acknowledgment message CRA Customized Recorded Announcement CRAC Change Request Authorization Committee CRACF Call-Related Radio Access Control Function CRAFT Co-operative Research Action for Technology CRAG Cellular Radio Advisory Group CRAM Card Random Access Memory CRAS Cable Repair Administrative System CRB Change Review Board CRB Cramer-Rao Bound CRB Customer Records and Billing CRBDN Call Redirection Busy Directory Number CRBE Conversational Remote Batch Entry CRBL Call Reference Busy Limit CRBO Centralized Records Business Office CRBS Cell Relay Bearer Service CRBT Continuous Ringback Tone CRC Class, Responsibility, Collaboration CRC Class-Responsibility-Collaborator CRC Common Repair Code CRC Communications Relay Center CRC Communications Research Centre CRC Cyclic Redundancy Check CRC Cyclical Redundancy Check CRC/BC Cyclic Redundancy Check/Blocked Check CRC4 Cyclic Redundancy Check procedure relating to the 2 048 kbit/s basic frame structure according to CC CRCC Cyclic Redundancy Check Character CRCC Cyclic Redundancy Code Character CRCDN Call Redirection or Call Deflection Notification CRCDS Call Redirection or Call Deflection Selection CRD Call Rerouting Distribution CRD Card file CRD Color Rendering Dictionary CRD Credit CRD Customer Requested Delivery CRDA Call Request Delete All CRDN Call Redirection Directory Number CRDN Call Redirection or Deflection Notification CRDO Centre de recherche pour la defense, Ottawa CRDP Call Redirection and Deflection Prevention CRDPC Code Restriction/Diversion Prohibited Codes CRDPCGP Code Restriction/Diversion Prohibited Codes Group CRDS Call Request Delete Specific CRE Call Re-establishment CRE Call Re-establishment procedure CRE Conductorship Relinquished CRE Cordless Radio Equipment CRED Credit Card Calling CREF Connection Refusal message CREF Connection Refused CREG Concentrated Range Extension with Gain CREJ Call Rejected CREN Corporation for Research and Educational Networking CREST Code Restrictions CRET Call Retrieve CRF Call Reference CRF Call Reference Flag CRF Cell Relay Function CRF Connection Related Function(s) CRF(VC) Virtual Channel Connection Related Function CRF(VP) Virtual Path Connection Related Function CRG Charge Information message CRG Charging CRG Common Routing Group CRG Customized Ringing CRH Classes-Responsibilities-Helpers CRI Call Request with Identification CRI Channel Restart Indicator CRI Continuity Recheck Incoming CRID Call Record ID CRIS Customer Records Information System CRISD Computer Resources Integrated Support Document CRISP Cascadable Real-Time Integrated Signal Processor Crit Critical CRJE Conversational Remote Job Entry CRL Certificate Revocation List CRL Computing Research Laboratory CRL Corporate Reuse Library CRLB Cramer Rao Lower Bound CRLF Carriage Return and Line Forward CRLF Carriage Return, Line Feed CRM Call Record Management CRM Cell Rate Margin CRM Circuit Reservation Message CRM Component Resource Manager CRM Connection Request Mode CRM Control Representation Mode CRMA Cyclic Reservation Multiple Access CRMG Call Reference Manager CRN Call Redirection Notification CRn Call Reference Number CRN Call Request with Number CRN CMWI Ring Notification CRO Cancel Rerouted Overflow CRO Cathode Ray Oscilloscope CRO Central Radio Office CRO Central Records Office CRO Certification Requirements Owner cro Character Reference Open CRO Continuity Recheck Outgoing CRODN Call Redirection Out of Order Directory Number CROM Control Read-Only Memory CROP Component Rationalization and Optimization CRP Call Request Packet CRP Command RePeat CRP CPU Root Pointer Register CRPA Controlled Reception Pattern Antenna CRQ Call Request CRQ Closed User Group Selection and Validation Request message CRR Call Request Retrieval CRR Call Request Retrieve CRR Circuit Reset Reception CRR MDII: Reset Signal Received that Aborts Incoming Call CRRE Corrected Receiving Reference Equivalent CRS Call Recording Stream CRS Call Redirection Subscription CRS Cell Relay Service CRS Cell Relay-based Service CRS Centralized Results System CRS Circuit Reset Sending CRS Closed User Group Selection and Validation Response message CRS Communicating Rule Systems CRS Conference Reservation System CRS Configuration Report Server CRS Crescendo CRS Crescendo Bulk Call Generator CRS Crescendo Driver CRS Customer Record Set CRS Customer Report System CRSA Centralized Repair Service Attendant CRSAB Centralized Repair Service Attendant Bureau CRS-B Crescendo-B (Ameritec BRI bulk call generator) CRSC Cabinetized Remote Switching Center CRSDRV Crescendo Driver CRSN Call Record Sequence Number CRSS Call Redirection Service State CRSS Call-Related Supplementary Services CRST Cluster Route Set Test message CRT Call Retention (TETRA) CRT Cathode Ray Terminal CRT Cathode Ray Tube CRT Continuous Ring Tone CRTC Canadian Radio-Television and Telecommunications Commission CRTC CRT Controller CRTS Cellular Radio Telecommunications Service CRTS Cellular Radio Test Set CRTSIM Cathode Ray Tube Simulator CRUD Create, Read, Update, Delete CRUD Create, Retrieve, Update, Delete CRV Call Reference Value CRVDN Call Redirection Variable Directory Number CRX Call Request Exempt CS Cable Ship CS Cable Station CS Call Second CS Call Segment CS Call Server CS Call State CS Call Store CS Capability Set (of IN) CS Carrier Sense CS Carrier Sensing CS Carrier System CS Cell Selection CS Cell Site CS Central Secretariat (CEN) CS Check Sequence CS Chip Select CS Chip Select CS Circuit Schematic CS Circuit Switch CS Circuit Switched CS CS Class Style CS Clear to Send CS Code Segment CS Code Server CS Code Submitted CS Codeset CS Codeswitch CS Coin Stuck CS Commercial Specification CS Communication et Signalization (CEPT) CS Communication Subsystem (IBM) CS Communication Support CS Communication(s) System CS Complete Sharing CS Computer Science CS Computer Simulation CS Configuration Services CS Connected Subaddress CS Connection Segment CS Connection Server CS Control State CS Convergence Sublayer CS Coordinated Single-Layer CS Cryptoserver CS C-Side CS Customer Specification CS Customer-Specific CS Higher layer Signalling channel (slow) CS ISO country code for Czechoslovakia (obsolete) CS/SS Card Services and Socket Services CS1 Capability Set 1 CS-1 Capability Set 1 CS-1 IN Capability Set No 1 CS1R Capability Set 1- Refined CS2 Capability Set 2 CS-2 Capability Set 2 CS-2 IN Capability Set No 2 CS3 Capability Set 3 CS-3 Capability Set 3 CSA Calendaring and Scheduling API CSA Call Segment Association CSA Called Subscriber Answer CSA Canadian Standards Association CSA Carrier Service Area(s) CSA Carrier Serving Area CSA Carry-Save Adder CSA Client Service Agent (MAP2.1 directory services) CSA Commercial Specification Agreement CSA Computing Services Administrator CSA Computing System Administrator CSA Computing Systems Analyst CSAB Computer Science Accreditation Board CSAC Computer Science Accreditation Commission CSACCS Customer Service Administration Control Center System CS-ACELP Conjugate-Structure, Algebraic-Code-Excited Linear Prediction CSAP Carrier Specific Announcement Phrasing CSAPI Common Speller Applications Programming Interface CSAT Customer Satisfaction CSATS Circuit Switch Automated Test System CSB Central-Side Busy CSB Channel Supervision Bit CSB Client Support Bulletin CSC Canadian Standards Committee CSC Cell Site Controller CSC Central Site Controller CSC Central Switching Center CSC Character Sets and their Coding CSC Circuit Signaling Channel CSC Circuit Switching Center CSC Clock Synchronization Circuit CSC Codeswitch Controller CSC Common Signalling Channel CSC Common Supplier Code CSC Control Signalling Code CSC Critical Service Circuit CSC Customer Service Center (ATT) CSC Customer Service Change CSCAN Customer Service Computerized Access Network CSCANS Customer Services Computer Access Network Standards CSCC Command Session Change Control CSCC Coordinated State Change Control CSCD Common Signalling Channel Demodulator CS-CDPD Circuit-Switched Cellular Digital Packet Data CSCF Common Service Circuit Frame CSCM Common Signalling Channel Modem CSCN Canadian Steering Committee on Numbering CSCS Common Signalling Channel Synchroniser CSCV CS Connection View CSCW Computer Supported Collaborative Work CSCW Computer Supported Collaborative Working CSCW Computer-Supported Cooperative Work CSD Circuit Switched Data CSD Circuit-Switched Digital Service CSD Communications Service Division CSD Communications Systems Division CSD Corrective Service Diskette CSD CPS System Description CSD Customer Service Division CSDC Circuit Switched Digital Capability CSDDN Circuit Switched Digital Data Network CSDDS Circuit Switched Digital Data Service CSDI Calling Card Service Denial Indicator CSDI CCAN Service Denial Indicator Identifier CSDI CCSAN Service Denial Indicator CSDN Circuit Switched Data Network CSDS Centralized Software Distribution System CSDS Customer Service Data System CSDS Customer Service Database System CSDS/E Customer Service Data System-Evolution CSE Cause CSE Communications Security Establishment CSE Coordinated Single-Layer Embedded CSE Customer Service Expert CSECT Control Section CSEL Cable Select CSELT Centro Studi e Laboratori Telecomunicazioni (I) CSER Consortium for Software Engineering Research CSF Cell Site Function(s) CSF Customer Service Functions CSFID Cross-Service Feature Interaction Detection CSFP Coded Superframe Phase CSFT Customer Services Feature Translator CSG Caller Subscriber Geography CSH C Shell csh C Shell CSH Called Subscriber Held CSI Call Setup Initialization CSI Called Subscriber Identification CSI Carrier Scale Internetworking CSI Channel State Information CSI Clearing Subnetwork Identification CSI Code Selection Indicator CSI Command Sequence Initiator CSI Control Sequence Introduction CSI Convergence Sublayer Indication CSI Current Source Inverter (Power Electronics) CSID Call Segment Identifier CsID Call Segment Identifier CSID Calling Station Identifier CSIDE Core Side C-SIDE Core Side CSIO Clocked Serial Input/Output CSIR Co-channel Signal to Interference Ratio CSL Command and Status Link CSL Component Sublayer CSL Component Substitution List CSL Computer Systems Laboratory (USA) CSL Constraint Specification Language CSL Control and Simulation Language CSL Current-Sinking Logic CSLIP Compressed SLIP CSLK Control Side Link CSLN Client-Server Layer Network CSLT Created Service Live Testing CSM Call Segment Model CSM Call Supervision Message CSM Cell Site Monitor CSM Central Service Module CSM Centralized Software Management CSM Channel Supervision and Messaging CSM Channel Supervision Manager CSM Channel Supervision Message CSM Combined Symbol Matching CSM Communication Session Manager CSM Communication System Management CSM Communications Services Manager CSM Communications System Monitor CSM Complex Services Module CSM Concorde System Manager CSM Correed Switching Matrix CSMA Carrier Sense Multiple Access CSMA/CA Carrier Sense Multiple Access with Collision Avoidance CSMA/CD Carrier Sense Multiple Access with Collision Detection CSMA/CR Carrier Sense Multiple Access with Contention Resolution CSMO Cell Site Master Oscillator CSMP Continuous System Modelling Program CS-MUX Circuit-Switched Multiplexer CSN Card-Select Number CSN Cell Site Node CSN Cellular Service(s) Node CSN Circuit Switched Network CSN Cluster Sequence Number CSN Common Services Network CSNET Computer + Science Network CSNET Computer Science Network CSNP Complete Sequence Number PDU CSO Central Services Organization CSO Centralized Service Observation CSO Cold Start Only cso Cold Start Only CSO Components and Supply Operations CSO Composite Second Order CSO Computer Service Organization CSO Customer Service Operations CSO Customer Service Organization CSO Customer Services Order CSOM Computer System Operator's Manual CSOS Central Support Operating System CSOS Change Service Order System CSP Call System Procedure CSP Character Shape Player CSP Chip Scale Package CSP Cluster Server Process CSP Coin, Semi-Postpay CSP Coint Sent Paid CSP Communicating Sequential Process(es) CSP Communications Services Platform CSP Communications System(s) Platform CSP Composite Service Participant CSP CompuCom Speed Protocol CSP Control Switch Point CSP Control Switching Point C-SPAN Cable Satellite Public Affairs Network CSPDN Circuit Switched Public Data Network CS-PDU Convergence Sublayer Protocol Data Unit CSPM C-Side Peripheral Module CSPP Computer Systems Policy Project (US) CSPS Constrained System Parameter Stream CSQP Customer/Supplier Quality Process CSR Cell Switch Router CSR Cell Switch Routing CSR Cell Switching Router CSR Channel Status Register CSR Character Shape Recorder CSR Code Special Ring CSR Code Specific Reroute CSR Communications Standards Review CSR Consistency Check Request message CSR Control and Status Register CSR Customer Service Record CSR Customer Service Report CSR Customer Service Representative CSR Customer Service Request CSR Customer Station Rearrangement CSRA Consistency Check Request Acknowledge message CSRC Contributing Source CSRE Corrected Sending Reference Equivalent CSRG Computer Science Research Group CSRG Computer Systems Research Group CSRM Call Server Resource Module CSRU Created Service Resource Utilization CSS Cascading Style Sheet CSS Cell Site Simulator CSS Cell Site Switch CSS Cellular Simulation System CSS Cellular Subscriber Station CSS Comprehensive Software Support CSS Connection-Successful Signal CSS Contact Start/Stop CSS Created Service Simulation CSS Customer Switching System CSS1 Cascading Style Sheet Level 1 CSSB Compatible Single SideBand (transmission) CSSM Cross-SCE Service Maintenance CSSN Circuit State Sequence Number CSSP Cache Set Status Port CSSP Common Services Switching Point CST Carrier Power Supply, Transistorized CST Central Standard Time CST Central Station CST Class-Of-Service Tone CST Common Segment Table CST Computer Supported Telecommunications CST Connection Switch Table CSTA Computer Supported Telephony Applications CSTA Computer-Supported Telecommunications Applications CSTMGRP Customer Group CSTO Computing Systems Technology Office CSTS Customer Service Technical Support CSU Channel Service Unit CSU Check Signal Unit CSU Client State Update CSU Common Support Unit CSU Communications Server Unit CSU Communications Service Unit CSU Communications System User CSV Certified System Vendor CSV Circuit Switched Voice CSV Comma Separated Value(s) CSV Common Service Verbs CSV Cornerstone Voice CSVD Continuously Variable Slope Delta CSVR Closed User Group Selection and Validation Request Message CSVS Closed User Group Selection and Validation Response Message CSW Channel Status Word CT Call Tracing CT Call Transfer CT Call Transfer supplementary service CT Call Type CT Centre du Transit CT Channel Tester CT Channel Type CT Code Table CT Coding Type CT Collectable Token CT Complete Translation CT Computed Tomography CT Computer Telephony CT Computer Terminal CT Computer Tomography CT Conformance Testing CT Conformance Testing CT Connection Termination CT Connection Type CT Continuity Transceiver CT Control Terminal CT Cordless Telecommunications CT Cordless Telephone CT Critical Interdigital Timing CT Cross Talk CT Cut-Through CT U.S. postal code for Connecticut CT1 Cordless Telephone 1 CT1 Cordless Telephone 1st generation CT1+ Version of CT1 using different frequencies for certain countries CT2 Cordless Telephone 2 CT2 Cordless Telephone 2nd generation CT-2 Cordless Telephone 2 CT2Plus Cordless Telephone 2 Plus CT3 Cordless Telephone 3 CT4Q Call Type for Queuing CTA Call Transfer All CTA Camp-On Tone Allowed CTA Common Temporary Address CTA Cordless Telephone Adapter CTA Cordless Telephone Apparatus CTA Cordless Terminal Adaptor CTAC Customer Technical Advisory Council CTAG Correlation Tag CTAK Cipher Text Auto Key CTAK Ciphertext Auto Key CTALL Call Transfer of All Calls CTAO Call Transfer Attendant Only CTAP Common Temporary Address Pointer CTAS Customer Technical Assistance and Support CTB Cable Termination Box CTB Cable Transition Board CTB Central Bus CTB Cipher Type Byte CTB Composite Triple Beat CTC Call Type Code CTC Columbus Technology Center CTC Continue To Correct CTC Cursor Tab Control CTCI Continue To Count Indicator CTCM Chrominance Time Compressed Multiplexing (VTR) CTCP Communication and Transmission Control Program (OSI/SNA) CTCSS Continous Tone Controlled Squelch System (Sub-Audio Signal) CTCSS Continuous Tone-Controlled Squelch System CTD Call Topology Display CTD Camp-On Tone Denied CTD Carrier Toll Denied CTD Cell Transfer Delay CTD Charge Transfer Device CTD Continuity Tone Detector CTD Cumulative Transit Delay CTD Cumulative Trauma Disorder CTD Cut-Through Delay CTD Cut-Through Dialing CTDT Code or Toll Diversion Treatment CTE Cable Terminating Equipment CTE Carrier Timing Entry CTE Channel Translating Equipment CTE Circuit Terminating Equipment CTE Coefficient of Thermal Expansion CTE Computer Telephony Engine CTE Customer Terminating Equipment CTE ISDN Class II Equipment CTF Circuit Free message CTFJ Computer Telephony Forum of Japan CTFRS Call Transfer, Fully Restricted CTFRSAM Call Transfer, Fully Restricted for Analog Member of EKTS CTFT C-Thin-Film Transistor CTG Capacitance Tip to Ground CTI Call Transfer Individual CTI Call Treatment Indicator CTI Centralized Ticket Investigation CTI Colour Transient Improvement (Video) CTI Compania de Telefonos del Interior CTI Compile Time Instrumentation CTI Computer-Telephony Integration (ECMA) CTIA Cellular Telecommunications Industry Association CTIG Call Transfer Inside Group CTINC Call Transfer of Incoming Calls CTIO Call Transfer Incoming Only CTIOIG Call Transfer Incoming Only Inside Group CTIP committee on Computing, Telecommunications and Information Policie s CTL Communication Test Line CTL Computing Technology Laboratory CTM Cell Transfer Mode CTM Communication Terminal Module CTM Conference Trunk Module CTM Coordinate Transformation Matrix CTM Cordless Terminal Mobility CTM Current Transformation Matrix CTMB Cell Transfer Matrix Bus CTME Cabinetized Trunk Module Equipment CTMF Conformance Testing Methodology and Framework CTMS Carrier Transmission Maintenance System CTN Cordless Telecommunication(s) Network CTN Corporate Telecommunication Networks CTNP Changed to Non-Published Number CTO Chief Technical Officer CTO Corporate Telecommunications Operation CTO Cut-Off CTO MDII: Timeout Waiting for Continuity Check Signal CTOG Call Toggle CTOG Call Transfer Outside Group ctor Constructor CTOS Convergence-Technologies (Inc.) Operating System CTOS Convergent Technologies Operating System CTOUT Call Transfer of Outgoing Calls CTP Cache Tag Port CTP Condensed Timing Plan CTP Configuration Testing Protocol (/loopback testing) CTP Connection Termination Point CTP0 Cache Tag Port Register 0 CTP1 Cache Tag Port Register 1 CTP2 Cache Tag Port Register 2 CTP3 Cache Tag Port Register 3 CTQ Call Transfer Queue CTR Call Progress Tone Receiver CTR Call Tone Receiver CTR Call Transfer CTR Capacitance Tip to Ring CTR Columbia University CTR Common Technical Regulation (ACTE) CTR Conformance Test Report CTR Count Register CTR CounTeR CTR Counter Register CTR Current Transfer Ratio CTR Customer Trouble Report CTR Response to continue To Correct CTRA Call Transfer CTRD Code or Toll, Restriction or Diversion CTRL Control CTRT Code or Toll Restriction Treatment CTRU CAMA TOPS Recording Unit CTS Cable Terminal Section CTS Cable Turning Section CTS Call Throttling Services CTS Call-Through Simulator CTS Carpal-Tunnel Syndrome CTS Carrier Transmit switch CTS Channel Time Slot CTS Clear To Send (signal) CTS Communication(s) Technology Satellite CTS Compatible Time Sharing (IBM) CTS Computer TypeSetting CTS Conformance Test Service(s) CTS Conformance Testing Service(s) (programme) CTS Cordless Telephone Services CTS2 XMHS EXtended MHS CTS CTSAP Call Transfer Software Application Package CTSL Core Test Services Layer CTSS Compatible Time Sharing System CTSS Computerized Tandem System Switch CTT Cable Trouble Ticket CTT Cellular Terminal Testing CTT Code TransparentTtransmission CTT Computed Transmission Tomography CTTC Coax To The Curb CTTE Common TDMA Terminal Equipment CTTH Coax To The Home CTTL Call Transfer to Tie Lines CTTLAM Call Transfer to Tie Lines for Analog Member of EKTS CTTU Central Trunk Test Unit CTTU Centralized Trunk Test Unit CTU Cabin Telecommunications Unit CTU Cable Termination Unit CTU Caribbean Telecommunication Union CTU Cartridge Tape Unit CTU Central Termination Unit CTU Customer Terminal Unit CTUP Chinese TUP CTV Colour TeleVision CTW Call Transfer Warning Tone CTX Centrex CTXCO Centrex Central Office CTXCU Centrex Customer CU Central Unit CU Channel Unit CU Control Unit CU Cooling Unit CU Cornell University CU Customer CU Customer Use CU ISO country code for Republic of Cuba CU See you CUA Common User Access (SAA-IBM) CUB Cursor Backward CUC Charge Unit Count CUCCA Columbia University Center for Computing Activities CUD Cursor Down CUE Character-Terminal User Environment CUE Corporate UNIX Environment CUF Channel Utlization Factor CUF Cursor Forward CUG Clean-Up Group CUG Closed User Group (supplementary service) CUG/OA Closed User Group with Outgoing Access CUGFORM CUG Format CUGIci CUG Interlock Code Indicator CUGIDX Closed User Group Index CUGNID CUG Network Identifier CUGSELTYP Closed User Group Selection Type CUI Character User Interface CUI Character-Oriented User Interface CUIF Control Unit Interface CUJ The C User's Journal CUJ The C/C++ User's Journal CUL See you later CUP Call User Procedure CUP Credit Update Protocol CUP Cursor Position CUPS Customer Unspecified Private Services CUR Cursor Resource file CURACF Call-Unrelated Radio Access Control Function CUS Customer Signoff CUSD Call Forward Usage Sensitive Denial CUSF Call-Unrelated Service Function CUSP Call-Unrelated Service Point CUSTCTL Customer Controlled CUSTID Customer Identification CUT Circuit Under Test CUT Class Under Test CUT Control Unit Terminal (IBM) CUT Cutoff CUTTD Cut Through Dialing CUU Cursor Up CV CallVer CV Code Violations CV Coding Violation CV Connection View CV Curriculum Vitae CV ISO country code for Republic of Cape Verde CVBS Composite Video, Blanking and Synchronisation signal CVBS Composite Video, Burst, and Sync CVC Compact Video Coded CV-CRC Coding Violations CRC CVD Chemical Vapor Deposition CVD CodeView Debugger CVD Compact Video Disk CVD Coordinated Voice and Data CVDSM Continuously Variable Slope Delta Modulation CVF Compressed Volume File CVG Convergence CVG-PDU Convergence PDU CVH Clocked Violation HI CVI CVT Request Message CVIS Conversant Voice Information System CVL Clocked Violation LO CVM Circuit Validation Test message CVN MDII: Vacant National Number (VNN) Signal Received CVNM Customer Virtual Network Management CVP Content Vectoring Protocol CVR Circuit Validation Response message CVR CVT Response Message CVRAM Cached VRAM CVRT Connection View Round-Trip Time CVS Central Video Server CVS Connection View State CVS Current Virtual Address Space CVSD Continuous Variable Slope Detection CVSD Continuously Variable Slope Delta (coder) CVSDM Continuously Variable Slope Delta Modulation CVSL Cascade Voltage Switch Logic CVT Circuit Validation Test CVT Circuit Validation Test message CVT Constant-Voltage Transformer CVT Cursor Vertical Tab CVW Codeview for Windows CW Call Waiting (supplementary service) CW Clockwise CW CommunicationsWeek (periodical) CW Contention Window CW Continuous Wave CW Control Word CW Create Window CW/F Call Waiting/Forwarding CWA Call Waiting Allowed CWA Communication Workers of America CWAI Clear and WAit for Interrupt CWAN Corporate WAN (ATT) CWAS Call Waiting Auto-Suppression CWB Call Waiting Billing Records CWC Cable and Wireless Communications CWC Call Waiting Cancel CWCA Call Waiting Call Appearance for Analog Member of EKTS CWCAM Call Waiting Cancel for Analog Member of EKTS CWCGO Call Waiting Cancel Intragroup Only CWCIO Call Waiting Cancel Incoming Only CWD Call Waiting Deluxe CWD Call Waiting Denied CWD Current Working Directory CWD Dial Call Waiting CWDL Call Waiting Dial CWDLACC Call Waiting Dial Access Code CWDLAM Call Waiting Dial for Analog Member of EKTS CWHA Call Completion With Announcement CWI Call Waiting Indication CWI Call Waiting Indicator CWI Call Waiting, Intragroup CWI Change Window Indicator CWIO Call Waiting Incoming Only CWIS Campus-Wide Information System CWND Congestion Window CWO Call Waiting Originating CWOA Call Completion Without Announcement CWOAM Call Waiting Origination for Analog Member of EKTS CWP Communicating Word Processor CWP Costed Work Programme (ETSI) CWP Current Working Point CWQ1 Call Waiting Queue Interval 1 CWQ2 Call Waiting Queue Interval 2 CWQ3 Call Waiting Queue Interval 3 CWR Call Waiting Reports CWR Call Waiting Ringback CWR Change with Referral to New Number CWRI Change Window Reply Indicator CWRT Call Waiting Reports Terminal(s) CWRU Case Western Reserve University CWS Combined World Switch CWS1 Combined World Switch One CWT Call Waiting CWT Call Waiting Termination CWT Call Waiting Tone CWTAM Call Waiting Termination for Analog Member of EKTS CWTGO Call Waiting Intra-Group Only CWTIO Call Waiting Incoming Only CWX Call Waiting Exempt CX Co-eXistence standard CX Coinbox CX Compatible eXpansion CX Composite CX Composite Signaling cx Count for x length (short) CX Count register CX ISO country code for Christmas Island CXC Call-by-Call CxC Call-by-Call CXE Containment and Cross Reference Engine CXR Call Transfer CXR Call Transfer Recall CXR Carrier cxx C++ File CY Calendar Year CY CapacitY cy Count for y length (short) CY CYcle CY ISO country code for Republic of Cyprus CYL Cylinder CYMK Cyan, Yellow, Magenta, and Black CYTA Cyprus Telecommunications Agency CZ ISO country code for Czech Republic back to top|0-9|A|B|C - D - E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

D Data D Data channel d deci (10-1) D Decimal D Deficiency D Delivery confirmation bit D Delta channel D Deprecated D Detailed D Diagonal (link) D Disconnect D Dispersion D Distance D channel Signalling channel (in CT2) D&OS Deployment and Operations Support D&OS Directory and Operator Services D/A Digital/Analogue D/A Digital-to-Analog D/C Down Converter D/D Digital to Digital D/L Download D/U Delay Unit D+R Drop and Repeat node D1 Directory One D1 Number of User-Assigned Call Control TEI Values D2 Number of Switch-Assigned Call Control TEI Values D2048U 2048 kbit/s Digital Unstructured ONP leased line D3D Direct 3D D64U 64 kbit/s Digital Unstructured DA Data Acquisition DA Data Available da deca (10+1) DA Delayed Activation DA Demand Assignment DA Design Accepted DA Destination Address DA Destination Allocation DA Development Agreement DA Device Attributes DA Digit Absorbing DA Digital Access DA Digital Announcer DA Direct Access DA Direct Attribute DA Directory Agent DA Directory Assistance DA Discretionary Assurance DA Distinctive Alerting DA Distributed Access DA Distribution Area DA Doesn't Answer DA Double Armor DA Double Armored DA Draft Addendum D-A Digital to Analog DA/CWI Distinctive Alerting/Call Waiting Indication DAA Data Access Arrangement DAA Data Access Arrangement (Bell) DAA Data/digital Access Arrangement DAA Directory Assistance Automation DAAR Dynamic Automatic Alternative Routing DAB Digital Audio Broadcasting DABCE Deactivation of Automatic Bridging Call Exclusion DABE Deny All But Emergency DABG Distinctive Alerting Call Waiting Business Group DABG Distinctive Alerting for BBG Members DABM Dual Access Buffer Memory DABR Data Address Breakpoint Register DAC Data Access Card DAC Datafield Access Conditions DAC Demand Assignment Circuit establishment DAC Digital to Analog Converter DAC Directory Access Command DAC Discretionary Access Control DAC Dual Attach Station Concentrator DACC Directory Assistance Call Completion DACCS Digital Access Cross-Connect System dacd Dial Carrier Access Code DACD Directory Access Control Domain DACE Data Administration Center Equipment DACIA Dual Asynchronous Communication Interface Adaptor DACL Discretionary Access-Control List DACRM Data Communication Recovery Manager DACS Digital Access and Cross-Connect System (AT&T) DACS Digital Access Crossconnect System DACWAC DARCW Active/Inactive Status DACWNL Distinctive Alerting/Call Waiting Number List DAD Datapac Adviser (Telecom Canada) DAD Demand Assignment circuit Disestablishment DAD Desktop Application Director DAD Destination Address Display DAD Draft Addendum DAdC Divert AdC DAdm Dial Administration DADS Delayed Call Database Administration DADS Directory Assistance Database Service DAE Data Access Evolution DAE Digital Audio Extraction DAEDR Delimitation, Alignment, Error Detection (Receiving) DAEDT Delimitation, Alignment, Error Detection (Transmitting) DAF Destination Address Field DAF Digital Audio File (digital audio tape) DAF Directory Access Function DAF Distributed Applications Framework DAF Distributed Architecture Framework DAF DQDB Access Functions DAFT Distributor Architecture Focus Team DAG Data Address Generator DAG Datenanschaltegerat (Data Connection Unit) DAG Directed Acyclic Graph DAHR Data Address Hold Register DAI Data Abstraction Interface DAI Data Accumulation Interval DAI Deny All International DAI Digital Audio Interface DAI DPMS/Application System Interface DA-I ISDN Distinctive Alerting Indication DAIS Data Access Interface Session DAIS Defense Automatic Integrated Switching System DAIS Direct Access Intercept System DAIS Distributed Application Integration System DAL Dallas DAL Data Access Language DAL Data Access Line DAL Database Administration Language DAL Dedicated Access Line DAL Direct Access Line DAL Direct Access Link DAL Distinctive Alerting DALAC Distinctive Alerting Active/Inactive Status DALACC Distinctive Alerting Access Codes DALB Distinctive Alerting Billing Records DALBACC Sistinctive Alerting Business Group Access Codes DALCOD DAta Line COncentrator/Deconcentrator DALLE Distinctive Alerting List Editing DALLEACC Distinctive Alerting List Editing Access Code DALLEBACC Distinctive Alerting Business Group List Editing Access Code DALNL Distinctive Alerting Number List DALNLS Distinctive Alerting Number List Size DALRC Distinctive Alerting Restricted Control DALRCAM Distinctive Alerting Restricted Control for Analog Member of EKTS DALT Distinctive Alerting Toggle DAM DECT Authentication Module DAM DECT Authentication Module DAM Device Adapter Manager DAM Diagnostic Acceptability Measure DAM Draft Amendment DAMA Demand Assignment Multiple Access DAML Digital Added Main Line DAMPS Digital Advanced Mobile Phone System D-AMPS Digital Advanced Mobile Phone System D-AMPS Digital AMPS DA-MSP Distributed Access MSP DAN Desk Area Network DAN Destination Address Number DANI Direct Automatic Number Identification DAO Data Access Objects DAO Database Access Object DAO Digits-as-Outpulsed DAP Data Access Protocol DAP Destination Access Point DAP Digital Access Point DAP Directory Access Protocol (X.500, DUA-DSA) DAP Dispatch Application Processor DAP Display Administration Process DAP Distributed Array Processor DAPI Destination Access Point Identifier DAPR Destination Address Pointer Register DAPSK Differential Amplitude Phase-Shift Keying DAQ Define Area Qualification DAR Daily Activity Report DAR Data Address Register DAR Defense Acquisition Regulations DAR Digital Audio Radio DAR Direct- and Alternate-Routed DAR Directional Alternate Routing DAR Dynamic Alternative Routing DARC Data Radio Channel (Japan) DARC Deutscher Amateur Radio Club (D) DARCW Distinctive Alerting/Ringing Call Waiting DARE Data Analysis and Representation Engine DARPA Defense Advance Research Projects Agency (USA) DARPA Defense Advanced Research Projects Agency DARS Digital Audio Radio Service DART Data Access and Reporting Tool DART Debugger for Remote Target DART Debugging, Analysis, and Run-time Tools DART Direct Audio RouTines DART Dump and Restore Table DARTS Design Approach for Real-Time Systems DAS Data Acquisition System DAS Data Auxiliary Set DAS Decimal Adjust after Subtraction (80x86 inst) DAS Demonstrator Access System DAs Dienstanschluss (Service Terminal) DAS Digit Analysis Selector DAS Digital Alarm Scanner DAS Direct Analogue Synthesis (signal generator) DAS Directory Assistance Services DAS Directory Assistance Simulator DAS Directory Assistance System DAS Dual Attach Station DAS Dual Attachment Station (FDDI) DAS Dual-Attachment Station DAS Dynamic Allocation Scheme DAS/CCI CCI Directory Assistance System DASA Daimler-Benz Aerospace AG DASD Direct Access Storage Device DASD Direct Access Storage Device (SNA) DASE Daily Aggregate Service Events DASH Description of Architecture and Services Harmonisation (ETSI) DASH Direct Access Storage Handler DASIM Directory Assistance Simulator DASK Digital implementation for Amplitude-Shift Keying DASK Display Agents Status Key DASK Display Agents Summary Key DASL Digital Adaptor for Subscriber Line DASM Direct Access Storage Media DASP Drive Active/Slave Present DASS Demand Assignment Signalling and Switching DASS Digital Access Signalling System DASS Direct Access Secondary Storage DASS Distributed Authentication Security Service DASS2 Digital Access Signalling System Number 2 DAT Data DAT Data File DAT Dedicated Access Trunk DAT Delay Alerting Timer DAT Digital Audio Tape DAT DQDB Access Termination DAT Duplicate Address Test DAT Dynamic Address Translation DATAM Document Architecture Transfer And Manipulation DATAS DMS Accounting and Traffic Analysis System DATE Dedicated Access to X.25 Transport Extension (OSI/SNA) DATEL DAta TELecommunication-DAta TELegraph-DAta TELephone DATV Digital Assistance for TV DATV Digitally Assisted TeleVision DAU Data Arithmetic Unit DAV Data Above Voice DAV Data Above Voice DAV DAta Valid (IEEE-488 Bus Signal) DAV Date of AVailability DAVC Delayed Automatic Volume Control DAVIC Digital Audio-VIsual Council DAVID Data Above Video DAVLC Data Above Voice Line Card DB Data Base DB Data Block DB Database DB Daughter Board dB Decibel(s) DB Device Buffer DB Dummy Burst dB(775mV) deciBel relative to 775 mV dB/Rm deciBel per kilometer DB2 Database 2 DBA Data Base Administrator/-tion DBA Database Administrator dBA deciBel (Audio, Weighting Curve A) dBA Decibels of acoustical loudness, A-weighted DBA Dynamic Bandwidth Allocation DBAM Data Base Access Method DBAS Database Administration System DBAT Data BAT dBc dB relative to the carrier power DBC Default Bearer Capability DBC Downbanded Cellular DBC Dummy Bearer Control DBC Dynamic Beam Control (Video Camera Tubes) DBCES Dynamic Bandwidth Circuit Emulation Service DBCP Database Control Point DBCS Database Control System DBCS Double-Byte Character Set DBD Database Desktop DBD Disk Block Descriptor DBDL Data Base Description Language DBE Double-Buffering Extension DBEF Dual Brightness Enhancement Film DBF Digital Beamformer DBH Direct Broadcasting to Home DBI Data Base Index dBi deciBel relative to an isotropic radiator DBIC Data Enhanced Bus Interface Card DBIF Data Buffer Interface DBIMOS DMOS/BIMOS DBIN Data Bus In DBIR Directed Beam Infrared DBIT D Bit D-bit Delivery Confirmation bit DBK Dialback DBL Database Language DBL Detailed Billing DBL Double Connection DBM Data Base Manager DBM Database Management dbm dB relative to 1 milliwatt dBm Decibels relative to 1 milliwatt DBM Dial Backup Module DBM Double Balanced Mixer dBm0 Decibels relative to 1 milliwatt at the 0 TLP dBm0p deciBel relative to Origin Psophometrically weighted DBMC Database Management Center dBmp deciBel relative to 1 milliwatt psophometrically weighted DBMS Database Management System DBN Dial by Name DBNE Test Not Equal, Decrement, and Branch (680x0 inst) DBNN Delete Bridged Night Number DBO Drop Build-Out DBOC Drop Build-Out Capacitance DBOR Drop Build-Out Resistance dBov dB below overload point DBP Database Processor DBP DBP Deutsche BundesPoste (D, obsolete) DBPM Differential BiPhase Modulation DBPT Deutsche Bundespost Telekom dBr deciBel, relative level DBR Deterministic Bit Rate dBr Relative Decibels dBrN deciBel with reference to Noise dBrnC Decibels above reference noise level with C-message weighting dBrnC0 Decibels above reference noise level with C-message weighting at t he 0 TLP DBS Data Base System DBS Data Bridging Service DBS Database Server DBS Direct Broadcast from Satellite DBS Direct Broadcast(ing) by Satellite DBS Direct Broadcast(ing) Satellite DBS Duplex Bus Selector DBS-PC Direct Broadcast Satellite PC DBT Deutsche Bundespost Telekom DBTR Digital Bit Timing Recovery dBu Decibels relative to 1 microwatt DBU Dynamic Bandwidth Utilization dBV deciBel relative to one Volt ( 0 dBV = 1 V ) DB-VSB Dual-Binary Vestigial Sideband dBW deciBel relative to one Watt ( 0 dBW = 1 W ) DBX Digital Branch eXchange (PBX) DC Data Cartridge DC Data Center DC Data Cncentrator DC Data Communication DC Data Communications (periodical) DC Data Conversion DC DDOC Completed DC Define Constant DC Delayed Call DC Design Close DC Design Complete DC Destination Category DC Destination Class DC Device Context DC Device Control DC Device Controller DC Device Coordinates DC Diagnostic Controller DC Digit Collection DC Direct Call DC Direct Current DC Directional Coupler DC Disconnect Confirm DC Disk Change DC Display Controller DC Distribution Center DC DRU Component DC Dry Circuit DC Physical D-Channel DC U.S. postal code for District of Columbia DC1 Device Control 1 DC2 Device Control 2 DC3 Device Control 3 DC4 Device Control 4 DC-600 Data Cartridge 600 DCA Austrian DCM DCA Defence Communication Agency (DoD) DCA Design Change Authorization DCA Destination Connection Agent DCA Digit Collection Allocate DCA Digital Communications Architecture DCA Digital Communications Associates DCA Direct Customer Access DCA Distributed Communications Architecture (Univac) DCA Distributed Computing Architecture DCA Document Communications Architecture (SNA. TOP) DCA Document Content Architecture (LU6.2/DISOSS/TOP) DCA Dynamic Channel Allocation DCA Dynamic Channel Assignment DCA Dynamic Context Addressing DCAF Distributed Console Access Facility DCAP Data Communications Application DCAP Display Capability DCB Data Cache Block DCB Data Control Block DCB D-Channel Backup DCB Device Control Block DCB Digital Channel Bank DCBI Directed Call Pick-Up with Barge-In DCBX Directed Call Pick-Up Barge-In Exempt DCC Data Carrier Detect (Modem Signal) DCC Data Communications Channel DCC Data Communications Circuit DCC Data Country Code (OSI-NL) DCC D-Channel Controller DCC Destination Code Cancel DCC Device Cluster Controller (Networks) DCC Device Color Characterization DCC Differential Chain Code DCC Digit Collection DCC Digital Color Code DCC Digital Compact Cassette DCC Digital Control Channel DCC Digital Country Code DCC Digital Cross-Connect DCC Digroup Control Card DCC Digroup Controller Card DCC Direct Cable Connection DCC Distributed Call Center DCC Flexible Calling Deactivate Conference Facility DCCA Distributed Control Channel Allocation DCCC Double Current Cable Code DCCE Digital Cellular Common Equipment DCCH Dedicated Control CHannel DCCH Digital Control Channel DCCS Distributed Capability Computing System DCCT Direct Current-Current Transformer DCD Data Carrier Detect (signal) DCD Design Change Document DCD Dialed Category Digit DCDN Direct Call Directory Number DCE Data Circuit-Terminating Equipment DCE Data Communications Equipment DCE Design Cost Estimation DCE Digit Collection Error DCE Digital Carrier Equipment DCE Dispatcher Control Entry DCE Distributed Computing Environment (OSF) DCE Drum Cable Engine DCF Data Communication Function DCF Data Conversion Facility DCF Data Count Field DCF DC Fuse Panel DCF Denied Call Forward DCF Denied Call Forwarding DCF Disengage Confirm DCF Disengage Confirmation DCF Dispersion-Compensating Fiber DCF Distributed Coordination Function DCF Document Composition Facility DCG Dispersion Compensating Grating DCH D-Channel Handler DCH Delete Character(s) DCHI D-Channel Handler Interface DCHL D Channel DCI Data Communication Interface DCI Delivery of Complementary Information DCI Digit Collection Instruction DCI Digital Carrier Interface DCI Display Control Interface DCI Dynamic Control Interface DCIC Disallowed Card Issuer Code DCIL Design Compatible Issue Lineup DCIS Direct Common-Channel Interoffice Signaling DCIU Data Channel Interface Unit DCIU Data Communication Interface Unit DCK A Derived Cipher Key DCK Derived Cipher Key DCL Declaration DCL Delayed Call Limit DCL Digital Command Language DCLCAD Direct Call Logical Channels Assigned to D-Channel DCLCANUPB Direct Call Logical Channels On Nailed-Up B-Channels DCLCAODB Direct Call Logical Channels On On-Demand B-Channels DCLID Dialable Calling Line Identification DCLU Digital Carrier Line Unit DCM Data Collection Management DCM Dial-Code Management DCM Digital Carrier Module DCM Digital Controller Module DCM Dispersion Compensation Module DCM Dynamic Connection Management DCM-B Digital Carrier Module-Basic DCMD Data MMU/Cache Command Register DCME Data Circuit Multiplication Equipment DCME Digital Circuit Multiplexing Equipment DCME Digital Circuit Multiplication Equipment DCMG DCME Gain DCMPAC Digital Carrier Module Pretest and Cutover DCMPMC D-Channel Message Performance Monitoring and Control DCM-R Digital Carrier Module-Remote DCMS Digital Circuit Multiplication System DCN Data Communication(s) Network DCN Design Change Notification DCN DisCoNnect DCND DTMP Calling Number Delivery DCO Data Central Office DCO Demand Continuity Outgoing DCO Dial Central Office DCO Digital Central Office DCO-EPN Data Central Office-End Point Number DCOFF Designated Control Office DCOM Distributed Component Object Model DCOMIS Dial Central Office Management Information System DCOP Digit Collection and Outpulsing DCOSW Electronic Switching: Digital Central Office Systems of the World ; Amos E. Joel Jr.; IEEE Press, 1982 DCOT Digit Collection and Outpulsing Team DCOT Digital Central Office Terminal DCP Data Communications Processor DCP D-Channel Processor DCP Device Control Protocol DCP Digital Communications Protocol DCP Direct Connect Partner DCP Directed Call Pickup DCP Distributed Collaborative Planning DCP Drop and Continue on Protection DCPA Distributed Call Processing Architecture DCPBH Double Channel Planar Buried Heterostructure (laser diode) DCPK Directed Call Park DCPL DCT Programming Language DCPN Domestic Customer Premises Network DCPSK Differential Coherent Phase Shift Keying DCPT Data Communication Between Different Protocol Terminals DCPU Directed Call Pickup DCPU Directed Call Pick-Up Non-Barge-In DCPU/BI Directed Call Pick-Up with Barge-In DCPX Directed Call Pickup Exempt DCR Data Conversion Receiver DCR DC Voltage On Ring DCR Degradation Category Rating DCR Design-Change Recommendation DCR Destination Call Routing DCR Destination Control Request signal DCR Digit Collection Resource DCR Directory Charge Recording DCR Dummy Call Reference DCR Dynamic Conformance Requirement DCR Dynamic Context Reference DCR Dynamically Controlled Routing DCS Data Collection System DCS Data Communication Subsystem DCS Data Communications Synchronization DCS Defense Communications System DCS Defined Context Set DCS Defined Context Set (OSI-PL) DCS Desktop Color Separation DCS Device Control String DCS Digital Cellular Switch DCS Digital Cellular System DCS Digital Channel System DCS Digital Clock Source DCS Digital Command Signal DCS Digital Communications System DCS Digital Control System DCS Digital Crossconnect System DCS Digitally Coded Squelch DCS Distributed Communication System DCS Distributed Control System DCS Document Control Standard DCS Dynamic Channel Selection DCS Dynamic Configuration Select DCS 1800 Digital Cellular System working at 1800 MHz DCS1800 Digital Communications System- 1800 MHz DCS1900 Digital Communications System- 1900 MHz DCSC Data Customer Support Center DCSM Digital Cell Site Monitor DCT Data Call Tester DCT Data Capture Tool DCT DC Voltage On Tip DCT Digit Collection Apply Tone DCT Digital Call Tester DCT Digital Carrier Trunk DCT Digital Communications Test System DCT Digital Cordless Telephone DCT Digital Cross-Connect Trunk DCT Discrete Cosine Transform (compression alg./CCITT) DCT Dispatcher Control Table DCT Display Compression Technology DCTB Disconnected, Call Being Taken By DCTL Data MMU/Cache Control Register DCTL Direct Coupled Transistor Logic DCTL Direct-Coupled Transistor Logic DCTN Defense Commercial Telecommunications Network DCTS Destination Code Traffic Summary DCTS Digital Cellular Time Switch DCT-S Digital Communications Test System-SPARCstation DCTU Directly Connected Test Unit DCU Data Control Unit DCU Data-Cache Unit DCU Digit Collection Utility DCU Dispersion Compaction Unit DCU Drum Control Unit DCUG DMS Centrex Users Group DCW Data Code Word DCW Detailed Call Walkthrough DCW Detailed Call Walkthru DCW Dial Call Waiting DCW Display Call Waiting DCW Drop and Continue on Working DD Data Definition DD Data Descriptor DD Data Dictionary DD Data Distributor DD DDOC Section: Design Description DD Deferred Delivery DD Definition List Description (HTML tag) DD Delay Dial DD Detailed Design DD Diagnostic Driver dd Didot DD Digital Data DD Digital Design (periodical) DD Digital Display DD Direct Dial DD Direct Dialed DD Direct Dialing DD Discriminating Digit DD Double Density Dd Double density DD Double Dispatching DD ISO country code for German Democratic Republic (obsolete) DDA Defined Display Area DDA Digital Differential Analyzer DDA Digital Directory Assistance DDA Domain-Defined Attribute DDA DSP Design Association DDB Device-Dependent Bitmap DDB Display Data Block DDB Distributed Data Base DDB Distributed Database DDBI DD/Billing-System Interface DDBM(S) Distributed Data Base Management (System) DDC Decimating Down Converter DDC Digital Data Channel DDC Digital Data Connectivity DDC Digital Downconversion DDC Direct Digital Control DDC Disk Drive Controller DDC Display Data Channel DDC Distributed Database Coordinator DDC1 Display Data Channel 1 DDC2B Display Data Channel 2B DDCA Dynamic Distributed Channel Assignment DDCE Digital Data Conversion Equipment DDCF Distributed Document Component Facility DDCMP Digital Data Communication Message Protocol (DEC) DDCMP Digital Data Communications Message Protocol DDCS Distributed Database Connection Services DDD Data Display Debugger DDD Digital Diagnostic Disk DDD Direct Distance Dialling DDD Double-Diffused Drain (FET structure) DDE Direct Data Entry DDE Distributed Debugging Environment DDE Dynamic Data Exchange DDEML Dynamic Data Exchange Management Library DDES Direct Data Exchange System DDF Data Deviation File DDF Data Distribution Framework DDF Digital Distribution Frame DDF MDII: No Start Dial- Delay Dial, Steady Off-Hook DDFA DTC Device File Access DDGL Device Dependent Graphic Layer (TOP) DDI Data Server/DPMS Interface DDI Device Driver Interface DDI Direct Dial In DDI Direct Dialling In (supplementary service) DDI Direct Digital Interface DDIE Direct Digital Interface Equipment DDIS Data Distributor DDJ Dr. Dobb's Journal (periodical) DDJST Dr. Dobb's Journal of Software Tools (periodical) DDK Device Driver Kit DDK Driver Development Kit DDL Data Definition Language DDL Data Description Language DDL Derived Data Link DDL Digital Data Link DDL Digital-system Design Language DDL Drive and Directory List DDLC Digital Data Line Card DDLC Double-Density Linecard DDLC Dual Data Link Controller DDM Data Distribution Manager DDM Data Distribution Model DDM Digital Data Multiplexer DDM Direction Division Multiplexing DDM Directional-Division Multiplexing DDM Distributed Data Management DDM Distributed Data Management architecture DDM Distributed Data Manager DDM Distributed Data Model DDMA Distributed DMA DDMA Dual Direct Memory Access DDME Design Delivery Management Environment DDMS DMS Data Management System DDN Data Directory Number DDN Data-Driven Network DDN (DoD) DDN Destination Directory Number DDN Dialable Directory Number DDN Dialable Number Delivery DDNA Destination DNA DDNS Dynamic Domain Naming Services DDO Denial Decision Object DDO Direct Dial Overseas DDO Dynamic Data Object DDOC Design Document DDOV Digital Data Over Voice DDP Data Delivery Protocol DDP Datagram Delivery Protocol DDP Digital Data Processor DDP Distributed Data Processing DDR Digital Data Receiver DDR Digital Distribution Rack DDR Double Data Rate DDS Dataphone Digital Service (ISDN) DDS Digital Data Service DDS Digital Data Storage DDS Digital Data System DDS Digital Display Scope DDS Direct Digital Synthesis (signal generator) DDS DMS Debug System DDS DMS Debugging System DDS-3 Digital Data Storage-3 DDSBS Duplex Dual-Serial Bus Selector DDSN Digital Derived Services Network DDT Default Distribution Tree DDT Delayed Dialing Tone DDT Detailed Design Team DDT Digital Data Transmitter DDT Dynamic Debugging Tool DDU Dialogue Data Unit DDU Digital Data Unit DDU Disk Drive Unit DDU Diskette Drive Unit DDV Dialog Data Validation DDX Dialog Data Exchange DDX Digital Data Exchange DDX-C Digital Data Exchange Circuit-switched DDX-P Digital Data Exchange Packet-switched DE Data Element DE Data Element (FTAM) DE Data Entry DE Data-Execution DE Decision Element DE Design Estimate DE Designated Entity DE Destination Exchange DE Development Estimate DE Discard Eligibility DE Discard Eligible DE Display Element DE Display Enable DE Display Equipment DE Domestic Environment DE Draft European telecommunication standard (ETSI) de Internet country code for Germany DE ISO country code for Germany DE U.S. postal code for Delaware DEA Data Encryption Algorithm DEA Data Encryption Algorithm (DoD) DEA Deactivation DEA Delete Authcode DEAF Default Error Action Flag DEB Demand-Established B-Channel DEC Decimal DEC DEClination DEC DECrement DEC Decrementer Register DEC Digital Equipment Corporation (now Digital) DEC Digital Exchange Controller DECCO Defense Commercial Communications Office DECNET Digital Equipment Corporation Network DECPSK Differentially Encoded Coherent Phase Shift Keying DECT Digital Enhanced Cordless Telecommunications DECT Digital European Cordless Telecommunications DECT Digital European Cordless Telephone DECUS Digital Equipment Computer Users Society DED Distant End Disconnect DEE Data Encryption Equipment DEE Datenendeinrichtung (Data Terminal Equipment) DEF Definition DEF Destination Element Field DEF Module Definition File DEFOML Default Overload Messaging Limit DEG Datenendgerat (Data Terminal) deg Degrees DEK Dansk Elektroteknisk Komite (DEN) DEK Data-Encrypting Key DEKITZ Deutsche Ko-ordinierung fur IT-Normen konformitatsprufung und Zer tifizierung DEL Decode Encode Language DEL Delete DEL Delete line from hunt group DEL Deloaded DEL Direct Exchange Line DELCF Delete Casual Feature DELPH Delete Packet Handler Options DELTA Development of European Learning through Technological Advance DEM Digital Elevation Model DEMKO Denmarks Elektriske MaterielKOntrol (DK) DEMO Demonstration DEMOD DEMODulator DEMS Digital Electronic Messaging Service DEMUX Demultiplexer DEMUX DEMUltipleXer DEN Directory Enabled Networks DEO Delete Option(s) DEO Delete Order DEO Digital End Office DEPIC Dual Expanded Plastic Insulated Conductor DEQPSK Differentially-Encoded Quadrature Phase Shift Keying DER Data Exception Report DER Distinguished Encoding Rules DES Data Encryption Standard (IBM) DES Destination End Station DES Destination End System DES Diagnostic Error Signaling des Diagnostic Error Signaling DES Digital Echo Suppressor DES Digital Encryption Standard DES Discrete Event Simulation DES Distributed End System DESA Dual Emergency Stand-Alone DESC Defense Electronic Supply Center DESC Defense Electronic Supply Center (United States Military) DESC Descriptor DESC Design Environment Steering Committee DESC Development Environment Standards Committee DESC Development Environment Steering Committee DESCBC DES Chain Block Coding DESE DES Encryption Protocol DESECB DES Electronic Code Book DESEP Destination Separations Class DESS Data Engineering Support System DEST Destination DET Design Effectiveness Tools DET Detach DET DETach DET DETector DEV Deviation DEV Device DEVCO ISO council DEVelopment COmmittee DEW Distant Early Warning system (US/Canada Military Radar System) DF Data Fanout DF Data Field DF Design File DF Design Finished DF Diagnostic Fault DF Digital Filter DF Direction Finding DF Direction Flag DF Distributing Frame DF Distribution Function DF Don't Fragment flag DFA Dedicated File Area (Multijob) DFA Deterministic Finite Automaton DFA DXI Frame Address DFAD Dual Facility Access Digroup DFARS Defense Federal Acquisition Regulations DFB Distributed Feedback DFB Distributed FeedBack (laser diode) DFC Data Flow Control DFC Design for Characterization DFC Destination Function Code DFC Disk File Controller DFD Data Flow Diagram DFD Displaced Frame Difference DFE Decision Feedback Equalization DFE Decision Feedback Equalizer DFE Design for Environment DFE Direct Forward Equalizer DFF Data Flow Function DFG Data Flow Graph DFG Deutsche Forschungsgemeinschaft DFG Difference Frequency Generation DFI Design For Installability DFI Digital Facility Interface DFI Digital Fiber Interface DFI Direct Fiber Interface DFI Domain-Specific Format Identifier DFI Domain-Specific Part Format Identifier DFIL Data Fill DFIR Diffused Infrared DFK Definable Function Key DFLT Default DFLTSC Default Source DFM Design for Manufacturability DFM Digital Frequency Modulation DFMS Digital Facility Management System DFN Defining Instance (HTML tag) DFP Digital Filter Processor DFP Digital Flat Panel DFP Distributed Functional Plane DFR Default Rate DFR Document Filing and Retreival (OSI-AL) DFS Depth-First Search DFS Distributed File Service DFS Distributed File System DFSA Deterministic Finite State Automata DFSE Decision Feedback Sequence Estimator DFSG Direct Formed Supergroup DFSK Double Frequency Shift Keying DFSM Deterministic Finite State Machine DFSM Dispersion Flattened Single Mode DFT Demand Flow Technology DFT Design for Test DFT Design for Testability DFT Diagnostic Function Test DFT Digital Facility Terminal DFT Discrete Fourier Transform DFT Discrete Fourier Transformation DFT Display Focus Team DFT Distributed Function Terminal DFT Distributed Functional Terminal DFT Distribution Functional Terminal (IBM) DFT DPNSS Feature Transparency DFT DraFT DFTI DMOPRO File Transfer Interface DFU Data File Utility DFU Digital Facilities Unit DFWMAC Distributed Foundation Wireless Media Access Control DG Data General DG Datagram DG Differential Gain DG Directorate General (CEC) DGA Device Group Actor DGCEL Digital Cellular DGCRA Dynamic GCRA DGIII Directorate General III (of the CEC) DGN Diagnostic DGNA Dynamic Group Number Assignment (TETRA) DGND Digital GrouND DGP Digipulse DGP Dissimilar Gateway Protocol dGPS differential GPS DGPT General Department of Post and Telecommunications DGR Digroup DGT Digital Graphic Terminal DGT Digitone DGT Direccion General de Telecomunicaciones (E) DGT Directorate General of Telecommunications DG-UX Data General Unix DGXIII Directorate General XIII (of the CEC) DH Data Register High Half DH Diffie-Hellman DH Directed Handoff DH Double Heterostructure D-H Diffie-Hellman DHA Dialogue Handling DHA Direct Hardware Access DHC Dynamic Host Configuration DHCF Distributed Host Command Facility (NetView) DHCP Domain Host Control Protocol DHCP Dynamic Host Configuration Protocol DHI Dual Host Interface DHN Digital Home Network DHR Dynamic Hierarchical Routing DHT Define Huffman Table DHT Diversity Trunk DHTML Dynamic HTML dHTML Dynamic HTML DHUG Dynamic High Usage Group DI Data In DI Data Interface Di Data Inverted DI Deactivate Indication DI Decrementer Interrupt DI Design Inspection DI Design Interpretive DI Destination Index DI Dielectric Insulation DI Dielectric Isolation DI Direct Index DI Disable Interrupt DI Document Index DI Draft Interface DI Draft Interfaces Available DI Draft Interim European Telecommunication Standard (ETSI) DIA Document Interchange Architecture (IBM) DIA Document Interchange Format (IBM-LU6.2) DIA DSP Interface ASIC DIAC DIode-Alternating-Current-switch DIAG DIAGnostic element DIAG Diagnostic Output System DIAG Diagnostics DIAGN Diagnostics DiagPl Diagnoseplatz (Diagnosis Station) DIALAN DMS Integrated Access Local Area Network DIANE Direct Information Access Network for Europe DIB Device-Independent Bitmap DIB Directory Information Base (X.5OO) DIB Dual Independent Bus DIBL Drain-Induced Barrier Lowering DIBOL DEC Business Oriented Language DIC Delay Interval Compensation DIC Digital Concentrator DIC Direct InterLATA Connecting DICAN Digital Customer Access Network DICE Digital Circuit Emulation DICP Digital Integrated Cellular Peripheral DICT Direct InterLATA Connecting Trunk DID Data Identifier DID Data Item Description DID Design Intent Document DID Digital Information Display DID Direct Inward Dial DID Direct Inward Dialing DID Directory Identifier DIDD Deny International Direct Dial DIDDNR DID Directory Numbers Range DIDRTI DID Route Index DIDTC D-Channel Incoming Default Throughput Class DIEL Advisory Committee on Telecommunications for Disabled and Elderly People (UK) DIF Data Interchange Format DIF Differential Backup Catalog File DIF Digital Interface DIF Digital Interface Format DIF Digital Interface Frame DI-FET Dielectric Isolation Field Effect Transistor DIFS Distributed Coordination Function Interframe Space DIG Digit Collection DIG Digits dig Domain Information Groper DIG3610 3/6/10 Digit Trigger DIG4 Digital 4-Wire Trunk DIGCOL Digit Collection DIGL Device Independent Graphics Layer (TOP) DIGS Device Independent Graphics Service (TOP) DII Dynamic Invocation Interface DIL Device I/O Library DIL Dual-in-Line DIM Desktop Information Manager DIM DIMension DIMA Direct Inward Mobile Access DIMM Dual In-Line Memory Module DIMPS D-Channel Incoming Maximum Packet Size DIN Denied Incoming DIN Deutsche Industrie-Norm/Deutches Institut fuer Normung DIN Deutsche Industry Norm (German Industry Standard) DIN Deutsches Institut für Normung e. V. DINA Direct Inward Network Access DINA Distributed Information-Processing Network Architecture DINE Denied Incoming Exempt DIO Data In/Out (IEEE-488 Bus Signal) DIO Device Input/Output DIO Direct Input/Output DIO Discrete Input/Output DIOB Data Input/Output Buffer Register DIOCES Distributed Interoperable and Operable Computing Environments and Systems DIOSS Distributed Office Support System DIP Data Interchange Protocol DIP Data Interface Process DIP Document Image Processing DIP Dual In-Line Package DIP Dual In-line Package DIR Direction DIR Directory DIR Directory List (HTML tag) DIRM Directory Maintenance DIRP Device Independent Recording Package DIRT Design Inspection Reporting Tool DIS Development Information System DIS Digital Identification Signal DIS Digital Interface System DIS Disconnect DIS Distributed Interactive Simulation DIS Draft International Standard DIS Driver Information System DIS Dynamic Impedance Stabilization DIS The Disney Channel DISA Defense Information Systems Agency DISA Direct Inward System Access DISC Device for Integrated Surveillance and Control DISC Digital International Switching Center DISC Disconnect DISC Disconnect message DISCD Disconnected DISCTO Disconnect Timeout DISD Discrimination Digit DISH Data Interchange in Shipping DISOSS Distributed Office Support System DISOSS DIStributed Office Support System (DCA/IBM) DISP Directory Information Shadowing Protocol DISP Display DISP DISPlay Information Element DISPH Displayphone DISPID Display Identification DISTRING Distinctive Ringing DISTXT Display Text DISU Digital International Switching Unit DIT Depth of Inheritance Tree DIT Digital Input (editing) Terminal DIT Directory Information Tree DITEC DIgital Television EnCoding DIU Data Interface Unit DIU Deutsche ISDN Unit DIU Digital Interface Unit DIU Digital Interworking Unit DIU Document Interchange Unit (IBM-LU6.2) DIV Data-In-Voice DIV Digital Interactive Video DIV Digitale Vermittlungsstelle (Digital Switching Exchange) DIV Digitale Vermittlungstechnik (Digital Switching Technology) (Digit al Exchange) DIV Digitales Vermittlungssystem (Digital Switching System) DIV DIVision DIVA Data Inquiry-Voice Answer DIVA Digital Input-Voice Answerback DIVA Digitale Vermittlungstechnik fuer den Auslandsferndienst (Internat ional Digital Exchange) DIVA Digitale Vermittlungstechnik fur den internationalen Ferndiens (In ternational Digital Exchange) DIVF Digitale Vermittlungstechnik fuer den Ferndienst (Digital Switchin g Technology for Long Distance) DIVF Digitale Vermittlungstechnik fur den nationalen Ferndienst (Tandem Digital Exchange) Divine Digital Video Narrowband Emission DIVO Digitale Ortsvermittlungsstelle (Local Digital Exchange) DIVO Digitale Vermittlungstechnik fur den Ortsdienst (Local Digital Exc hange) DIVO Local Digital Switch DIVOdg Digitale Vermittlungstechnik fur den Ortsdurchgang (Local Tandem E xchange) DIVOT DIgital to VOice Translator Divx Digital Video Express DIX D-Channel Index DIX DEC- Intel- Xerox Corp. DIX DEC/Intel/Xerox DJ Double-Jump DJ ISO country code for Republic of Djibouti DJN/R Dow Jones News/Retrieval DK Datakit DK ISO country code for Kingdom of Denmark DKE Deutsche Elektrotechnische Kommission im DIN und VDE (D) DKI Driver-Kernel Interface DKM DV-Strom Kontroll-Modul DKO Delete Key Option DKS Digital Key System DL Data Link (layer) DL Data Link Layer Service DL Data Register Low Half DL Decode Level DL Definition List (HTML tag) DL Delete Line DL Dial Level DL Digital Line DL Digital Link DL Discrete Listening (TETRA) DL Distance Learning DL Distribution List DL Download DL Network Layer (Layer 3)-Data Link Layer (Layer 2) Interface DL- communication between layer 3 and Data Link layer DL/I Data Language No.1 DLA Data Looparound DLA Delayed Acknowledgement DLA Digital Line Extender DLANN Delay Announcement DLANN2 Delay Announcement 2 DLANN3 Delay Announcement 3 DLANN4 Delay Announcement 4 DLBB Data Layer Building Block DLC Data Line Card DLC Data Link Connection DLC Data Link Connections DLC Data Link Control DLC Data Link Control protocol (ANSI) DLC Data Link Controller DLC Datapath Line Card DLC Digital Channel DLC Digital Line Card DLC Digital Link Control DLC Digital Loop Carrier DLC Dynamic Load Control DLC Signaling-Data-Link-Connection-Order Signal DLCB Data Link Control Block DLCC Data Link Control Chip DLCEI Data Link Connection Endpoint Identifier DLCF Data Link Control Field DLCI Data Link Connection Identifier (ISDN/LAPD) DLCI Digital Loop Carrier Interface DLCL Data Line CLock (Video VPS) DLCMI Direct Link Connection Management Interface DLD Data Link Discriminator DLD Display List Driver dld Dynamic Loader DLE Data Latch Enable DLE Data Link Entity DLE Data Link Escape (Character) DLE Data Link Event DLE Digital Local Exchange DLE Digital Loop Electronics DLE Direct Line Equipment DLE Dynamic Lightpath Establishment DLEI Data Link Endpoint Identifier DLG Dialog DLG Dialog File DLH Data Link Handler DLH Distributed Line Hunt(ing) DLI Data Link Identifier DLI Data Link Interface DLI Digital Line Interface DLI Dual Link Interface DLL Data Link Layer DLL Data Link Layer (OSI) DLL Delay-Locked Loop DLL Dial Long Line DLL Digital Local Line DLL Dynamic Link Library DLL Dynamically-Linked Library DLLCC DLL & C Connect DLM Data Line Module DLM Data Link Connection Order Message DLM Data Link Manager DLM Data Link Module DLM Digital Line Module DLM Signaling-Data-Link-Connection-Order Message DLMAP Data Link Map DLMKS Data Line Module Key Set DLO Data Line Occupied DLOG Disk Logs DLP Data Line Protector DLP Data Link Processor DLP Decode Level Point DLP Dienstleistungsprozesse DLP Digital Light Processing DLP Digital Light Processor DLPI Data Link Provider Interface DLR Design Layout Record DLR Design Layout Report DLR Digital Locate Receiver DLRR Digital Loop Replacement Radio DLS Data Link Service DLS Data Load Segment DLS Digital Line System DLS Distance Learning Service DLS Downloadable Sample DLSAP Data Link Service Access Point DLSC Digital Local Switching Center DLSDU Data Link Service Data Unit DLSE Dial Line Service Evaluation DLSO Dial Line Service Observing DLSw Data Link Switching DLT Data Linkage Table DLT Delete DLT Digital Line Termination DLT Digital Linear Tape DLT Digital Loop Transceiver (ISDN) DLTS Deep-Level Transient Spectroscopy DLTS Direct Line Telephone System DLTU Digital Line and Trunk Unit DLTU Digital Line Trunk Unit DLU Dialog Unit DLUR Dependent Logical Unit Requester DLUS Dependent Logical Unit Server DLVBLTYP Delivery Features Billing Records Type DLVFEAT ISDN Delivery Features Toggle DLVFEATACC ISDN Delivery Features Business Group Access Codes DLVFEATRC ISDN Delivery Features Restricted Control DLVFEATRCAM ISDN Delivery Features Restricted Control for Analog Member of EKT S DLYOP Delayed Outpulsing " Dm Control Channel (ISDN terminology applied to mobile service) " DM Data Manager DM Data Mark DM Data Memory DM Data Mode DM Data Modem DM Data Modification DM Data Multiplexer Dm Data-Mobile Channel DM Degraded Minute(s) DM Delta Modulation DM Derived MAC sublayer DM Design Manager DM Desirability Measure DM Desktop Management DM Deutsche Mark DM Device Management DM Device Manager DM Diagnostic Manager DM Diagnostic Monitor DM Dienstmerkmal (Service Feature) DM Differential Mode DM Digital Milliwatt DM Digital Modem DM Direct Mode (TETRA) DM Disconnect Mode (HDLC, LAPB) DM Disconnected Mode DM Distribution Manager DM Distribution Manager (NetView-IBM) DM Domain Model DM ISO country code for Commonwealth of Dominica DMA Deferred Maintenance Alarm DMA Direct Memory Access DMA0 Data Memory Address Register 0 DMA1 Data Memory Address Register 1 DMA2 Data Memory Address Register 2 DMAC Direct Memory Access Controller DMAI Direct Memory Access Interface D-MAP D-field MAP DMB D-Channel Maintenance Busy DMB Disconnect and Make Busy DMC DMS Maintenance Controller DMC Dual Modem Card DMC Dynamic Memory Controller DMCL Device Media Control Language DMCT Denied Malicious Call Termination DMCT Deny Malicious Call Termination DMD Development Management Document DMD Differential Mode Delay DMD Digital Micromirror Device DMD Digital Micromirror Display DMD Directory Management Domain DMD Dot-Mapped Display DMD0 Data Memory Data Register 0 DMD1 Data Memory Data Register 1 DMD2 Data Memory Data Register 2 DMDD Distributed Multiplexing Distributed Demultiplexing DMDR DPN Management Data Router DME Data Modem Extension DME Direct Memory Execution DME Distance Measuring Equipment (Avionics) DME Distributed Management Environment (OSF) DMERT Dual Multi-Environment Real Time DMERT Duplex Multi-Environment Real Time DMF DAT Management Function DMF Display Management Format DMF Distribution Media Format DMH Data Message Handler DMH Data Message Handling DMI Data Management Interface DMI Data Mode Idle DMI Definition of Management Information DMI Desktop Management Interface (group) DMI Digital Multiplexed Interface DMI Disable Manual Input DMI Distributed Management Interface DMIS Dimensional Measuring Interface Specification V.2 (OSI) DMIS Directory Management Information System DML Data Manipulation Language DMM Device Maintenance Manager DMM Digital Multi-Meter DMMU Data Memory Management Unit DMNI/RCR Digital Mobile Communications Network Internode/Radio Center for R esearch DMO Data Modification DMO Data Modification Order(s) DMO Domain Management Organization DMODEM Digital Modem DMOPRO Data Modification Order Processor DMOPRO Data Modification Orders Process DMOS Degradation Mean Opinion Score DMOS Diffused Metal Oxide Semiconductor DMP Development Management Process DMP Document Management Procedure DMP Dot Matrix Printer DMPDU Derived Medium access control Protocol Data Unit DM-PDU Derived MAC Protocol Data Unit DMR Demultiplexing/Mixing/Remultiplexing DMR Digital Radio DMR Digital Mobile Radio DMRV Fifth Nordic Seminar on Digital Mobile Radio Communications DMS Data Management System DMS Defense Message System DMS Defense Messaging System DMS DMS Document Management System DMS Domain Management System (Siemens) DMS ES DMS Expert System DMSD Digital Multistandard Coding DMSE DMS Evolution DMSES DMS Expert System DMS-MTX DMS Mobile Telephone Exchange DMS-NMS DMS Network Management System DMS-NSS DMS-Network Services System DMSPH DMS-100 Packet Handler DMS-PH DMS Packet Handler DMSPL DMS Product Library DMSRID Default MSRID DMSU Digital Main Switching Unit DMT Digital Multiplex Terminal DMT Discrete Multitone DMT Dynamic Matrix Testing DMT0 Data Memory Transaction Register 0 DMT1 Data Memory Transaction Register 1 DMT2 Data Memory Transaction Register 2 DMTF Desktop Management Task Force DMTF Desktop Management Task Force DMTM Data Management and Transmission Module DMTS Distinguished Member of Technical Staff DMU Data Memory Unit DMV Dynamically Managed Voice DMW Digital Milliwatt DMXR Demultiplexer DMZ Demilitarized Zone DN Delivery Notification DN Destination Network DN Developer Network DN Dialing Number DN Directory Number DN DiscoNnect DN Distinguished Name DN/CT Directory Number/Call Type DNA Data Network Address DNA Deutschen Normenausschuss DNA Digital Network Architecture (DEC) DNA Distributed Network Architecture (NCR) DNA Dynamic Network Architecture DNA FS Distributed Internet Applications for Financial Services DNAPI Directory Number Appearance ID DNB Directory Number Bridging DNBAM DN Bridging for Analog Member of EKTS DNBD Deutsches Network Broadcasting Delivery DNBFC DNB for EKTS or Flexible Calling for Non-EKTS DNC Digital Node Controller DNC Direct Numerical Control DNC Directory Number Check DNC Directory Number Contention DNC Do Not Collect DNC Dynamic Network Control DNC Dynamic Network Controller DNCAP Directory Number/Call Appearance DNCP DECnet Control Protocol DNCT Directory Number/Call Type DND Data Network Division DND Department of National Defence DND Dialable Number Delivery DND Directory Number Dependent DND Do Not Disturb (supplementary service) DNDG Do Not Disturb- Group DNDGX Do Not Disturb, Selected-Group Station Diversion DNDI Do Not Disturb- Individual DNEC Digital Network Echo Control DNF Disjunctive Normal Form DNG Dynamic Network Gateway DNH Directory Number Hunt(ing) DNHD Directory Number High and Dry DNHR Dynamic Non-Hierarchical Routing DNI Data Network Interface DNI Deny National and all International DNI Digital Network Interconnect(ing) DNI Digital Network Interface DNI Digital Non Interpolation DNI Directory Number Independent DNIC Data Network Identification Code DNIC Data Network Identifier DNIC Digital Network Interface Circuit DNID Deny National and International Direct Dial DNIS Dialed Number Identification Service DNL Differential Non-Linearity (Analogue-Digital Converters) DNN Data Network Number DNP Directory Number Profile DNPA Data Numbering Plan Area DNPC Directory Number Primary Inter-LATA Carrier DNPC Dual Network Packaged Core DNPIC Directory Number Primary InterLATA Carrier DNR Directory Number Reference DNR Domain Name Resolver DNR Dynamic Noise Reduction DNS Data Network System DNS Distributed Name Service (DSM-Tandem) DNS DN Set DNS Domain Name Server DNS Domain Name Service DNS Domain Name System (TCP/IP-DoD) DNSIX Defense Network Secure Information Exchange DNSP Distributed Networked Services Platform DNSS DN Screening Set Option DNT Dialed Number Trigger DNTR Denied Termination Treatment DNTU Digital Network Terminating Unit DNTX Do Not Transmit DNTYP Multiline Hunt Terminal Type DNU Digital Networking Unit DNU Do Not Use DNUI Directory Number User Interface DNUS Digital Network Unit-SONET DNU-S Digital Networking Unit-SONET DNW DECT NetWork DNX Digital Network Crossconnect DO Data Out DO Data Output DO Database Owner DO Denied Origination DO Derived Object DO Design Objective DO Disallowed Operation DO Distributed-Object DO ISO country code for Dominican Republic DoA Date of Announcement DOA Dead On Arrival DOA Direction of Arrival DOAS Dial Out Attribute Selector DOC Declaration of Conformity DOC Department of Commerce DOC Department of Communications DOC Distributed Object Computing DOC District Operations Center DOC Document File DOC Drop-Out Compensation (Video Tape Recorder) DOC Dynamic Overload Control DOCAT Digital Optical CAble-television Trunk system DoD Department of Defense DoD Department of Defense (USA) DOD Direct Outward Dial DOD Direct Outward Dialing DODTC D-Channel Outgoing Default Throughput Class DoE Demonstration of Equivalence DOE Department of Energy DOE Distributed Object Environment DOE Distributed Objects Everywhere DOEORB DOE Object Request Broker DOF Data Order File DOF Degrees of Freedom DOHB Draw-Off/Hold-Back DOI Department of Industry DOI Depth of Inheritance DO-I ISDN Denied Origination DO-ID Derived Object Identifier DOJ Department of Justice DOM Distributed Operational Measurements DOM Document Object Model DOM Domain Object Model DOME Distributed Object Management Environment DOMF Distributed Object Management Facility DOML Default Overload Messaging Limit DOMPS D-Channel Outgoing Maximum Packet Size DOMSAT Domestic Satellite DON Digital Overlay Network DOORS Dynamic Object Oriented Requirements System DOOS Dependent Out-of-Service DoP Date of Publication (ETSI) DOP Dilution of Precision DOP Direction of Projection DOP Directory Operational binding management Protocol DOPSK Differential Offset Phase Shift Keying DOR Date Of Ratification DOR Dead Office Recovery DOR Denied Origination DOR Denied Origination Treatment DOR Digital Optical Recording DOR Division of Revenue DORG Denied Origination DORS Dial Out Routing Server DoS Denial of Service DOS Directory & Operator Services DOS Disk Operating System DOS/VS Disk Operating System/Virtual Storage DOSBS Data Over Speech Bearer Service DOSF Distributed Office Support Facility (IBM) DOSX DOS Extender DoT Department of Telecommunications DOT Distributed Object Technology DOT Document Template File DOTS Digital Office Timing Supply DOUS Digit Outpulser Utility Service DOV Data Over Voice DOV Data Over Voice DoW Date of Withdrawal (ETSI) DP Data Partitioning DP Data Port DP Data Processing DP Dataport DP Delivery Process DP Demarcation Point DP Designer Productivity DP Detection Point DP Diagnostic Port DP Dial Pulse DP Dial Pulsing DP Dial/Dialled Pulse DP Dialing Plan DP Dialled Pulse DP Dialog Processor DP Differential Phase DP Digital Potentiometer DP Digital Press DP Distribution Point DP Diverse Protection DP Diversely Protected DP Document Parameters dp Dot Pitch (typically expressed in mm) DP Double Pole DP Draft Proposal DP Dual Processor DPA Demand Protocol Architecture (3COM) DPA Destination Physical Address DPA Destructive Physical Analysis DPA Dial Pulse Access DPA Dual Power Amplifier DPAC DATAPAC DPATH Data Path DPB Drive Parameter Block DPBX Digital Private Branch Exchange DPC Data Packet Collector DPC Data Processing Center DPC Deferred Procedure Call DPC Destination Point Code DPC Digital Port Card DPC Digital Private Circuits DPC Distributed Persistent Cache DPC Double Purpose Connector DPC Dynamic Power Control DPCA Defect Prevention and Corrective Action DPCC Dual Plane Combined Cabinet DPCC Dual Plane Combined Core DPCC Dual Plane Core Cabinet DPCM Differential Pulse Code Modulation DPCP DECnet Phase IV Control Protocol DPCTH Dynamic Power Control Threshold-High DPCTL Dynamic Power Control Threshold-Low DPD Differential Phase Detector DPD Display Digits DPDT Double-Pole Double-Throw DPE Data Processing Equipment DPE Direct Plate Exposure (Printing) DPE Distributed Processing Environment DPE Distributed Programming Environment DPE Dynamic Pool Extender DP-EX Data Port Extender DPI Digital Phone Interface dpi Dots Per Inch DPI Dots Per Inch DPIB Directed Call Pickup Billing Records DPKTGP D-Channel Packet Group DPL Descriptor Privilege Level DPL Digital PowerLine DPLL Digital Phase-Locked Loop DPLM Domestic Public Land Mobile DPLMRS Domestic Public Land Mobile Radio Service DPM Defects Per Million DPM Digital Phase Modulation DPM Documents Per Minute DPM Downtime Performance Measurement DPM Dynamic Power Management DPMC Dual Port Message Controller DPMI DOS Protected-Mode Interface DPMS Data Processing and Management System DPMS Display Power Management Signaling DPMS DOS Protected Mode Services DPN Data Packet Network DPN Digital Packet Network DPN Digital Path Not Provided message DPN Digital Path Not provided signal DPN Directed Call Pickup- Non Barge-in DPNACC Directed Call Pickup Non-Barge-In Access Code DPNB Directed Call Pickup Non-Barge-In Billing Records DPNS Digital Private Network Signaling DPNSS Digital Private Network Signalling System (BT) DPNX Directed Call Pickup Exempt DPO Data Path Object DPO Dial Pulse Originating DPP Data Processing Peripheral DPP Defect Prevention Process DPP Distributed Preplan DPP Distributed Processing Peripheral DPPS Data Packets Per Second DPPS Data Post-Processing System DPR Data Unit Profile DPR Detailed Privacy Recording DPR Digit PResent DPR Dual Port RAM DPRAM Dual Port Random Access Memory DPRG Data Population Rule Generation DPRI Delay Priority DPS Data Processing System DPS D-Channel Packet-Switched DPS Design and Prototyping Services DPS Display PostScript DPSK Differential Phase Shift Keying DPST Double-Pole Single-Throw DPT Dial Pulse Terminating DPT Different Premises Telephone DPT Drive Parameter Tracking DPTC Dual Processor Terminal Controller DPU Direct Pick-Up DPU Directed Call Pickup- Barge-in DPU Display Processing Unit DPUACC Directed Call Pickup Barge-In Access Code DPUB Directed Call Pickup Billing Records DPUIND Directed Call Pickup Barge-in Indication DPUN DPU Notification DPX Datapath Extension DQ Deluxe Queuing DQA Design Quality Assurance DQC Display Queued Calls DQD Directory Query Display DQDB Distributed Queue Double Bus DQDB Distributed Queue Dual Bus DQDB Distributed Queued Dual Bus DQDB Dual Queue Dual Bus DQE Detective Quantum Efficiency DQI Departmental Quality Index (ETSI) DQPSK Differential QuadraPhase Shift Keying DQPSK Differential Quadrature Phase-Shift Keying D-QPSK Differential Quaternary Phase-Shift Keying DQRUMA Distributed Queuing Request Update Multiple Access DQS Display Queue Status DQS Document Quality System DQT Define Quantization Table DQT Display Queue Threshold DR Data Rate DR Data Ready DR Deactivation Request DR Dead Reckoning position (ship-navigation) DR Debug Register DR Defect Report DR Delivery Report DR Derived Requirements DR Design Requirements DR Design Review DR Designated Receivers DR Diagnostic Request DR Digit Receiver DR Digital Radiology DR Digital Research DR Direct Route DR Direct Routed DR Directed Retry DR Disconnect Request DR Disconnect Request DR Discount Request DR Distinctive Ringing Dr Draht (Wire) DRA Digital Recorded Announcement DRA Distributed Restoration Algorithm DRA Dynamic Resource Allocation DRAM Digital Recorded Announcement Machine DRAM Digital Recorded Announcement Module DRAM Dynamic RAM DRAM Dynamic Random Access Memory DRAMC Dynamic Random-Access Memory Controller DRAW Direct Read After Write DRAW Direct Read After Write (Optical Disk) DRB Destination Route Builder DRC Data Recovery Center DRC Data Recovery Component DRC Design Rule Checking DRCC Dual Remote Cluster Controller DRCC2 Dual Remote Cluster Controller 2 DRCCI ISDN Dual Remote Cluster Controller DRCS Digital Radio Concentrator System DRCS Dynamically Redefinable Character Set DRCW Distinctive Ringing/Call Waiting DRCW Distinctive Ringing/Ringback for Call Waiting DRD Data Rule Distribution DRDA Distributed Relational Database Architecture DRE Directional Reservation Equipment DREO Defence Research Establishment Ottawa DREQ DMA Request DRES Data Route Expert System (Telecom and Bell Canada) DRF Data Recovery Field DRFM Digital Radio Frequency Module (Military Avionics) DRG Degrees, Radians, or Gradians DRG Developer Relations Group DRG Direction de la Réglementation Générale (F) DRI Defence Research Internet DRI Define Restart Interval DRI Digital Research Inc. DRI Dual Ring Interworking DRING Distinctive Ring DRIVE Dedicated Road Infrastructure for Vehicle safety in Europe DRJ Disengage Reject DRL Data Retrieval Language DRL Denied Roamer Log DRM Data Request Message DRM Distributed Recording Manager DRM Domain Resource Manager DRMS Dynamic Resource Management System DRO Destructive Read Operation DRO Destrutive Read-Out DRO Dielectric-Resonator Oscillator DROES Data Receive Only Earth Stations (satellite) DROP Drop DRP Directional Radiated Power DRP Distribution and Replication Protocol DRQ Data Request DRQ Disengage Request DRQ DMA Request DRRS Digital Radio Relay System DRS Data and Report System DRS Data and Reports System DRS Data Rate Selector DRS Data Relay Satellite DRS Data Retreival System DRS Delayed Release message DRS Delayed Release Signal DRS Digital Radio System DRS Digital Reference Sequence DRS Digital Reference Signal DRS Druckstation (Printer Station) DRS Dynamic Resource Scheduling DRSC Dedicated Short Range Communications DRSC Dual Remote Switching Center DRSCI ISDN Dual Remote Switching Center DRT Data Recording Terminal DRT Destination Route DRT Diagnostic Rhyme Test DRT Digit Reception Test DRTM Design Ready To Manufacture DRTS Distributed Real-Time System DRTU Digital Remote Test Unit DRU Deliverable Release Unit DRU Delivery Release Unit DRU Design Releasable Unit DRU Design Release Unit DRU Development Release Unit DRU DualMode Radio Unit DRU Dual-mode Radio Unit DRUID Demonstrational Rapid User Interface Development DRUM Design Requirements Utility- Multisite DRUM DualMode Radio Unit Monitor DRV Device Driver File DRW Micrographx Designer/Draw File DRX Discontinuous (radio) Reception (mechanism) DRX Discontinuous Reception DRxI Definite Response x indicator (SNA) DS Dansk Standardiseringsraad DS Danske Standardiseringsrad (DK) DS Data Schema DS Data Segment DS Data Set DS Data Signaling DS Data Store DS Data Stream(ing) DS Data Strobe DS DDOC Section: Data Schema DS DDOC Started DS Decode and Select DS Default Service DS Define Storage DS Delivery System DS Denotational Semantics DS Design Specification DS Design Started DS Diagnostic Server DS Dialup Switch DS Digit Select DS Digit String DS Digital Section DS Digital Services DS Digital Signal DS Digital Signaling DS Digital Switch DS Digital System DS Direct Sequence DS Direct Sequence DS Direct Signaling DS Directory Service(s) DS Dispersion Shifted DS DiSplay DS Distinguishing Sequence DS Distributed Single-Layer DS Distribution Session DS Distribution System DS Document Storage DS Double Side DS Double Sided DS Downstream DS Drive Select DS Duplex Signaling DS Primary Rate Access Digital Section DS II Data Syntax according to CCITT Recommendation T.101, Annex C DS III Data Syntax according to CCITT Recommendation T.101, Annex D DS/DD Double-Sided Double-Density DS/HD Double-Sided High-Density DS/SS Direct Sequence Spread Spectrum DS0 Digital Signal Level 0 DS0 Digital Signal, level 0 DS-0 Digital Signal Level 0 DS0A Digital Signal Level 0A DS-0A Digital Signal Level 0A DS0CTA DS0 Channel Termination for Nailed-Up Analog Service DS0CTB DS0 Channel Terminations for B-Channels DS0CTD DS0 Channel Termination for D-Channel DS0CTD2 DS0 Channel Termination for D-Channel Backup (D2) DS0DP DS0 Dataport DS0-DP DS0-Dataport DS1 Digital Signal Level 1 DS-1 Digital Signal Level 1 DS1 OE DS1 Office Equipment Number DS1BIF DS1 Bus Interface DS1C Digital Signal Level 1 Concatenated DS-1C Digital Signal Level 1 Concatenated DS1GSP DS1 Group Search Priority DS1PORTS DS1 Ports DS2 Digital Signal Level 2 DS-2 Digital Signal Level 2 DS3 Digital Signal Level 3 DS-3 Digital Signal Level 3 DS-3C Digital Signal Level 3 Concatenated DS9 Default Service in NA009 DSA Data Set Adapter DSA Dead System Alarm DSA Dell SCSI Array DSA Destination Subarea DSA Dial Service Administration DSA Dial Service Analysis DSA Dial Service Assistance DSA Dial Service Auxiliary DSA Digital Serving Area DSA Digital Signature Algorithm DSA Digital Storage Architecture DSA Digital Subtraction Angiography (Med.) DSA Directory Server Agent DSA Directory Service Agent DSA Directory System Agent DSA Distributed System Architecture (Bull) DSA Distributed Systems Architecture DSA Dynamic Slot Assignment DSAA DECT Standard Authentication Algorithm DSAC Dial Service Administration Center DSAC Distributed Systems Administrations and Control (Bull) DSAC DMS Support and Change DSAF Destination Subarea Field DSAP Data Supervisor Area Pointer DSAP Destination Service(s) Access Point DSAPI Destination Service Access Point Identifier DSAR Data System Address Register DSAU DS1 Signal Access Unit DSB Digital Sound Broadcasting DSB Double Sideband DSB TC Database for Testcases DSBAM Double Sideband Amplitude Modulation DSBEC Double Sideband, Emitted Carrier DSBLD Disabled DSBRC Double Sideband, Reduced Carrier DSBS Digital Sound Broadcasting System DSBSC Double Sideband, Suppressed Carrier DSB-SC Double SideBand Suppressed Carrier DSBTC Double Sideband, Transmitted Carrier DSC Data Storage Controller dsc Declaration Subset Close DSC DECT Standard Cipher DSC Digital DSC Digital Spectrum Compatible DSC Digital Subscriber Carrier (system) (ISDN) DSC Digital Subscriber Controller (ISDN) DSC Digital Switch Corporation DSC Direct Satellite Communications DSC District Switching Centre DSC Document Structuring Conventions DSC Dynamic Switch Compiler DSC The Discovery Channel DS-CDMA Direct Sequence CDMA DSCH Dual Service Channel DSCWID Deluxe Spontaneous Call Waiting Identification DSCWID Spontaneous Call Waiting Identification with Disposition DSD Data Structure Definition (CCA/VTS) DSD Development Strategy Document DSD Digital Switch Division DSD Direct Service(s) Dialing DSDB Debit Service Database DSDC Direct Service Dialing Capability DSDC Direct Service(s) Dialing Capabilities DSDD Double-Sided Double-Density (Disk) DSDN Designated Secondary Directory Number DSDS Dataphone Switched Digital Service DSDT Dynamic Structured Data Transfer DSE Data Switching Equipment DSE Data Switching Exchange DSE Dialogue Service Element DSE Digital Switching Element DSE Distributed Single-Layer Embedded DSE Distributed Switching Evolution DSE Distributed System Environment (Honeywell) DSE Document Search Engine DSE DSA-Specific Entry DSEA Display Station Emulation Adapter DSEE Domain Software Engineering Environment DSEQ Descending Sequence DSET Display Set DSF Dispersion-Shifted Fiber DSFT Designing Systems For Testability DSG Distributed Systems Generator DSGW Double Sided Glue and Wave DSH Dual Seizure Handling DSHD Double Sided High Density DSI Data Set Identifier DSI Data Set Interface DSI Data Storage Interrupt DSI Data Stream Interface DSI Detailed Spectrum Investigation DSI Digital Signal Interface DSI Digital Speech Interpolation DSI Disable Interrupts DSI Dynamic Skeleton Interface DSIC Digital Subscriber Interface Circuit DSIP Digital Set Interface Processor DSIS Distributed Support Information Standards (group) DSISR DSI Exception Source Register DSL Digital Simulation Language DSL Digital Subscriber Line DSL Digital Subscriber Loop DSL Distributed Service Logic DSL Distribution Service Level (SNA) DSLAM Digital Subscriber Line Access Multiplexer DSLC Data Subscriber Loop Carrier DSLIC Digital Subscriber Line Interface Circuit DSLT Digital Subscriber Line Terminal DSM Digital Storage Media DSM Digital Storage Medium DSM Direct Signal Monitoring DSM Direct Synthesis Module DSM Directory Service Migration DSM Distributed Software Manager DSM Distributed Systems Management (Tandem) DSMA Data Sense Multiple Access DSMA Digital Sense Multiple Access DSMA/CD Digital-Sense Multiple Access with Collision Detection DSM-CC Digital Storage Media Command and Control DSM-CC Digital Stored Media Command and Control DSN Data Set Name DSN Data Source Name DSN Debit Service Number DSN Defense Switched Network DSN Deliver Single Number DSN Digital Switching Network DSN Disk Serial Number DSN Distributed System Network (Hewlett Packard Inc.) DSN Distributed System Network (HP) DSN Dual Shelf Network DSN MDII: No Start Dial- Delay Dial, Steady On-Hook DSNE Double Shelf Network Equipment DSNE Dual Shelf Network Equipment DSNX Distributed Systems Node Executive (APPN-IBM) dso Declaration Subset Open DSO Development Support Overhead DSO Digital Sampling Oscilloscope DSO Digital Storage Oscilloscope DSO Dual In-Line Small Outline DSOC Decode and Select/Operand Fetch Cycle DSOM Distributed System Object Model DSP Data Service Provider DSP Device Stop DSP Digital Signal Processing DSP Digital Signal Processor DSP Direction du Service Public (F) DSP Directory Service Protocol DSP Directory System Protocol (OSI) DSP Display DSP Display Station Protocol DSP Display Translation/Routing Information DSP Domain Specific Part (OSI-NL) DSP Downstream Processor DSP Drive Slave Present DSPAN DataSpan DSPC Display Control DSPDA DSP Design Automation DSPERM Permanent Data Store DSPI DSP Island DSPM Digital Signal Processing Module DSPM Direct Subscription Parameter Management DSPR DSP Resource Module DSPROT Protected Data Store DSPU Downstream Physical Unit DSQD Double Sided Quad Density DSR Data Set Ready (Signal) DSR Data Signalling Rate DSR Data Synchronization Register DSR Dead System Recovery DSR Device Status Report DSR Digital Satellite Radio DSR Digital Subtraction Radiology (Medical) DSR Double Sided Reflow DSRI Digital Standard Relational Interface DSRR Digital Short Range Radio DSRTP Digital Services Remote Test Port DSRV Default Service DSS Data Storage System DSS Datensichtstation (Data Display Terminal) DSS Decision Support Services DSS Decision Support System DSS Dedicated Servo Surface DSS Device Support System DSS Dial Selective Signaling DSS Digital Satellite Service DSS Digital Satellite System DSS Digital Signalling Systems DSS Digital Signature Standard DSS Digital Subscriber Signalling DSS Digital Subscriber Signalling System DSS Digital Switching Subsystem DSS Digital Switching System DSS Direct Station Select DSS Direct Station Selection DSS Directory and Security Server DSS Directory and Security Services DSS Diskless Support Services DSS Distributed Sample Scrambling DSS Domain SAP/RIP Server DSS Dynamic Structure Sizing DSS1 Digital Signalling System number one (ISDN access protocol) DSS1 Digital Subscriber Signaling System No. 1 DSS1+ enhanced DSS1 DSS2 Digital Signalling System number 2 (B-ISDN access protocol) DSS2 Digital Subscriber Signaling System No. 2 DSSA DECT Standard Authentication Algorithm DSSC Double Sideband Suppressed Carrier DSSD Double-Sided Single-Density (Disk) DS-SMF Dispersion Shifted Single-Mode Fiber DSSS Direct Sequence Spread Spectrum DS-SS Direct-Sequence Spread-Spectrum DSSSL Document Style, Semantics, and Specification Language DS-SSMA Direct Sequence-Spread Spectrum Multiple Access DST Daylight Saving Time DST Destination DST DeSTination reference DST Device Start DSt Diensstelle (Service Center) DST Diode-Split Transformer DST Dispersion Supported Transmission DST Distributed Smalltalk DST Double Super Twisted DST Double-Layer Supertwist D-STB Detailed Simulation Testbed DS-TDMA Data Syntax according to CCITT Recommendation T.101, Annex B DSTE Digital Subscriber Terminal Equipment DSTEMP Temporary Data Store DSTN Double Supertwisted Nematic DSTN Dual Supertwist Nematic DSTS Digital Services Test System (CSC-ATT) DSU Data Service Unit DSU Data Service Unit (Bell) DSU Data Switching Unit DSU Digital Service(s) Unit DSU Disk Storage Unit DSU Distribution Service Unit (SNA) DSU DMS Software Update Controller DSV Data Steal into Voice DSVD Digital Simultaneous Voice and Data DSVT Digital Secure Voice Telephone DSX Digital Signal Cross-connect DSX-1 DSX for DS1 Facilities DT DaTa DT Data Terminal DT Data Terminal equipment DT Data Transfer DT Data Transmission DT Data Tuple DT DDOC Section: Design Test Plan DT Defer Threshold DT Definition List Term (HTML tag) DT Delayed Transmission DT DeleTe DT Denied Termination DT Design Test DT Designer Test DT Designer Tested DT Designer Testing Completed DT Deutsche Telekom (German Telecom) DT Dial Tone DT Digital Terminal DT Digitalk DT Digitone DT Digroup Terminal DT Display Text DT Distant Terminal DT Draw Text DT&M Desktop Technology & Management DT1 Data Form 1 DT2 Data Form 2 DTA DaTA DTA Data Transmission Abort DTA Desktop Assistant DTA Detailed Traffic Analysis DTA Digital Terminals and Access DTA Digital Test Access DTA Digitally Terminated Analog DTA Disk Transfer Area DTA Distributable Technical Audit DTA Distribution Terminal Assembly DTAC Digital Test Access Connector DTAC Digital Test Access Controller DTACK Data Transfer ACKnowledge DTAD Digital Telephone Answering Device DTAG Deutsche Telekom AG (German Telekom AG) (former DBPT) DTAI ISDN Digital Trunk Array DTAL Digital Test Access Link DTAM Document Transfer and Manipulation DTAM Document Transfer And Manipulation (CCITT T.431/433) DTAM Document Transfer Application Management DTAM Document Transfer, Access and Manipulation DTAO Desk-Top/Audio-Only DTAP Direct Transfer Application Part DTAU Digital Test Access Unit DTB Data Transfer Bus DTBI Denied Toll Break-In DTBS Distributed Time-Bounded Services DTC Data Test Center DTC Datacommunication and Terminal Controller DTC Desk-Top Communication DTC Desktop Conferencing DTC Digital Traffic Channel DTC Digital Transmit Command DTC Digital Trunk Controller DTC Direct-To-Child DTC7 CCS7 Digital Trunk Controller DTCA Default Throughput Class Assignment DTCI ISDN Digital Trunk Controller DTCO Digital Trunk Controller Offshore DTCOi Digital Trunk Controller Offshore (ISDN) DTCT DMS Translations Capture Tool DTD Dial Tone Delay DTD Document Type Decalaration DTD Document Type Definition DTDMA Distributed Time Division Multiple Access DTDR Dial Tone Delay Recorder DTDR Dial Tone Delay Recording DTDS Disaster Tolerant Disk System DTDS+ Disaster Tolerant Disk System Plus DTE Compatibility with DTE Built to 1980, 1984, or 1988 ITU-T X.25 DTE Data Terminal Equipment DTE Data Terminating Equipment DTE Digital Terminal Equipment DTE Digital Trunk Equipment DTEI Dynamic TEI DTEI ISDN Digital Trunk Equipment DTF Data Transfer Facility (DECnet-SNA) DTF Data Transmission Failure DTF Dial Tone First DTF Digital Transmission Facility DTFI Digital Transmission Facility Interface DTH Data Test Head DTH Digital Test Head DTH Direct To Home DTH Direct-To-Home DTI Data Transfer Interface DTI Data Trunk Interface DTI Defect Type Indication DTI Department of Trade and Industry (UK) DTI Digital Trunk Interface DTI Distortion Transmission Impairment DT-I ISDN Denied Termination DTIE Display Text Information Element DTIM Delivery TIM dtksh Desktop Korn Shell DTL Designated Transit List DTL Digital Tanlock DTL Digital Trunk Link DTL Diode-Transistor Logic DTLB Data Translation Lookaside Buffer DTLS Digital Television Lightwave System DTM Denied Termination DtM Design to Manufacture DTM Design To Market DTM Digital Terrain Model DTM Digital Test Module DTM Digital Trunk Module DTM Distributed Transaction Monitor DTM DRAM Trunk Module DTM Dynamic Traffic Management DTMEPI Denied Termination Except Priority Incoming DTMF Digitone Multifrequency DTMF Dual-Tone Multifrequency DTMFR DTMF Receiver DTN Deflected-to Number DTN Deliver Two Numbers DTN Digitone Dial DTN Diverted-to Number DTO Decentralized Toll Office DTO Desktop Object D-TO-A Digital to Analogue dtor Destructor DTP Data Tape Punch DTP Data Transfer Process DTP Data Transport Protocol DTP Designer Test Process DTP Designer Testplan DTP Desktop Publishing DTP Distributed Transaction Processing (OSI) DTPM Data Transport Protocol Machine DTR Data Terminal Ready (modem signal) DTR Data Transfer Requested DTR Data Transmission DTR Digital Tone Receiver DTR Digitone Receiver DTR Distributor Session DTR Distributor Transactor DTR Down-Time Ratio DTR Draft ETSI Technical Report DTR Draft Technical Report (IEC, ETSI) DTRC Data Transmitter Receiver Chip DTRC DS-512 Transmit/Receive Controller DTRE DTMF Recognition DTS Data Tandem Switch DTS Data Transport System DTS Decoding Time Stamp DTS Dial Tone Speed DTS Digital Tandem Switch DTS Digital Terminal Simulator DTS Digital Termination System DTS Digital Test Sequence DTS Digital Theater Surround DTS Digital Transmission System DTS Distributed Time Service DTS Document Translation System DTSP Default Terminal Service Profile DTSP Duplicate Translation Signalling Point DTSR Dial Tone Speed Recording DTTB Digital Television Terrestrial Broadcasting DTU Data Terminal Unit DTU Data Terminating Unit DTU Data Transfer Unit DTU Digital Test Unit DTV Desktop Video DTV Digital Television DTW Dynamic Time Warping dtwm Desktop Window Manager DTWX Dial TeletypeWriter eXchange DTWX Dial Teletypewriter Exchange Service DTX Data Transmission DTX Discontinuous Transmission (mechanism) DU Data Unit DU Dimensioning Unit DUA Device Under Analysis DUA Directory User Agent DUAE Directory User Agent Entity DUAL Distributed Update Algorithm DUAP Data User Area Pointer DUAQ Dial-Up Autoquote DUART Dual Universal Asynchronous Receiver/Transmitter DUC Data Unit Control DUC Dual-Access Utility Circuit DUD Dollar Underscore Dollar DUE Detection of Unauthorized Equipment DUF Dispersion-Unshifted Single-Mode Fiber DUITS Digital, Ubiquitous, Interoperable, Transparent, and Secure DUKPT Derived User Key Per Transaction DUN Dial-Up Networking DUP Data User Part DUP Default User Profile DUP Destination User Prompter DUP Duplicate DUS Data User Stations DUSCC Dual Universal Serial Communications Controller DUT Device Under Test DUTL DMS Universal Transport Layer DUUS Delivery of User-to-User Signaling DUV Data Under Voice DUV Deep Ultraviolet DUX Digital Unix DV DataVision DV Distance Vector DVA Digital Video Architecture DVAP Design Verification and Acceptance Plan DVB Digital Video Broadcasting DVB Direct Video Broadcast DVB DOS Volume Boot Sector DVB-C Digital Video Broadcasting-Cable DVB-S Digital Video Broadcasting-Satellite DVBST Direct View Bistable Storage Tube DVB-T Digital Video Broadcasting-Terrestrial DVC Desktop Videoconferencing DVC Digital Video Compression DVC Digital Videocassette DVCC Digital Verification Color Code DVD Digital Versatile Disk DVD Digital Video Disk DVDR Digital Video Disk Recorder DVD-R Digital Video Disk-Recordable DVE Digital Video Effects D-VHS Data VHS D-VHS Digital Data VHS DVHT Digital Video Home Terminal DVI Data and Voice Interface DVI Data-Voice Interleaved DVI Diagonal Viewable Image DVI Diagonal Viewing Image DVI Digital Video Interactive DVI Digital Video Interactive system DVI Digital Video Interface DVI Digital Voice Interpolation DVLN Digital Video Learning Network DVM Data Voice Multiplexor DVM Digital Volt-Meter DVM Document View/Markup DVMA Direct Virtual Memory Access DVMRP Distance Vector Multicast Routing Protocol DVM-RP Distance Vector Multicast Routing Protocol DVOM Digital Volt-Ohm Meter DVS Data Voice System DVS Datenvermittlungssystem DVSR Digital Video Silicon Recorder (Mass-Memory) DVST Direct-View Storage Tube DVST Direct-View Storage Tube DVS-TP Data Voice System- Transaction Processor DVT Designer Verification and Testing DVT Digital Video Terminal DVTR Digital Video Tape Recorder DVTS Digital Video Test Set DVX Digital Voice Exchange DW Data Word DW Deep Water DW Device Wait DW Double Word dw DWORD (unsigned long) DWARF Debug With Arbitrary Record Format DWB Designer's Workbench DWBS DEFINITY Wireless Business System DWDM Dense Wavelength Division Multiplex DWDM Dense Wavelength Division Multiplexer DWDM Dense Wavelength Division Multiplexing D-WDM Dense-Wavelength Division Multiplexer DWF Drawing Web Format DWF Dual-Window Fibre DWIM Do What I Mean DWMT Discrete Wavelet Multitone DWN DoWN DWS Dialable Wideband Service DWV Data With Voice DX Data register DX Destination Switch Complex DX Distance DX Duplex DX DupleX DX Duplex Signaling DXB Drawing Interchange Binary DXC Digital Cross-Connect DXCS Digital Cross Connect System DXE either a Data Terminal Equipment or a Data Circuit terminating Equ ipment DXF Data Exchange Format DXF Drawing Exchange Format DXF Drawing Interchange Format DXFR Data Transfer DXI Data Exchange Interface DXL DOORS Extension Language DXS Data eXchange System dyn Dynamic Links DYN Dynamic Links Without Packet Link DYNPAL Dynamic Links With Packet Links DYP Directory Yellow Pages DZ ISO country code for People's Democratic Republic of Algeria back to top|0-9|A|B|C|D - E - F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

e earth wire E East E Echo E Electrical e emf (when used in conjunction with a signal generator) E Enable E Energy E English E Erlang E Error-Detected E Essential user facility E Exception E Exchange E Expedited (X) E Exponent E Extended (link) E Extension E Irradiance E&E Environment, Health, Safety, Security, and Business Ethics E&M Ear and Mouth E&M rEceive and transMit leads E&S Evans and Sutherland e.r.p. effective radiated power E/O Electrical-to-Optical E/O Electro-Optical E/S Earth Station E/U-MUX switch between E-type and U-type MUltipleXes E2E End To End E3C European Coordination Committee for Certification (ECCC) E800 Enhanced 800 Service E911 Enhanced 911 Emergency Service EA Address Field Extension Bit EA Early Assignment EA Effective Address EA Electroabsorption EA Emergency Action EA Emergency Announcement EA Equal Access EA Erase in Area EA Evaluation Authority EA Expedited Acknowledgement EA Expedited data Acknowledgement EA Expedited Data Acknowledgement Message EA Extended Address EA Extended Address field bit EA Extended Attribute(s) EA External Alarms EA1 Emergency Announcement #1 EA2 Emergency Announcement #2 EAB Enterprise Application Builder EAB ESPRIT Advisory Board EABS Exchange Alternate Billing Service EABS Exchange Alternate Billing System EAC Effective-Address Calculation EAC Engineering Accreditation Commission EAC Engineering Action Center EACC East Asian Character Code EACEM European Association of Consumer Electronics Manufacturers EACK Extended Acknowledgement EACSO East Africa Common Services Organization EAD Engineering and Administration EAD Expert Agent Distribution EADA Engineering and Administrative Data Acquisition EADAS Engineering and Administrative Data Acquisition System EADAS/NM Engineering and Administrative Data Acquisition System/Network Man agement E-ADPCM Embedded Adaptive Differential Pulse Code Modulation EAE Equipment Application Engineer EAE3 Efficient Algorithms Executing Every Aspect of Engineering for Equipment Application Engineers EAEO Equal Access End Office EAEO Exchange Access End Office EAF Effective-Address Fetching EAFGD Equal Access Feature Group D EAI Emergency Action Interface EAI Emergency Administrative Interface EAIEC Equal Access Interexchange Carrier EAILU Enhanced Asynchronous Interface Line Unit EAM Electrical Accounting Machine EAM Electronic Accounting Machine EAM Extended Answer Message EAMA Enhanced Automatic Message Accounting EAMF Equal Access Multifrequency EAMPS Expanded AMPS EAN European Article Number (bar code) EANT Equal Access Network Trunk EAO Electronic Access Ordering EAOA Equal Access/Operator Assist team EAOS Equal Access and Operator Services EAOSS Equal Access Operator Services Signaling EAOSS Equal Access Operator Signaling System EAOSS Exchange Access Operator Services System EAP Emergency Action Program EAP Employee Assistance Program EAP Equal Access Plan EAP Extended Access Paging EAP Extended Access Paging EAP Extensible Authentication Protocol EAP External Address Plan EAPROM Electrically Alterable Programmable Read-Only Memory EAR Early Access Release EAR External Access Register EARB Enhanced Adaptive Rate-Based EARB Extended Adaptive Rate-Based EARN European Academic and Research Network EAROM Electrically Alterable Read-Only Memory EAs Einzelanschluss (Single Line) (analogue line, single line) EAS EAS Enhanced Alarm System EAS Exchange Access Signaling EAS Exchange Access System EAS Expert Agent Selection EAS Extended Area Service EAS External Architecture Specification EAsKt Einzelanschlusskonzentrator (Single Terminal Concentrator) EASP Equal Access Switching Point EAT EDNA Administration Tool EAT Emergency Administrative Terminal EATMS Electro-Acoustic Transmission Measuring System EATS Equal Access Traffic Separation EAX Electronic Automatic Exchange EAX Extended Accumulator Register eaz Endgeraeteauswahlziffer (Terminal Equipment Selection Digits) EB Electronic Bonding EB End of Block EB Exabyte EB External Bit EB&F Equipment Blockages and Failures EB/TA Electronic Bonding for Trouble Administration EBAF Enhanced Bellcore AMA Format EBAF Expanded Bellore AMA Format EBAF Extended Bellcore AMA Format E-BAMA Enhanced Beacon Assisted Multiple Access EBAS Enhanced Billing and Access Services EBB Elektronische Bild Bearbeitung EBBL Evolution Brown Bag Lunch EBC Egress Busy Crankback message EBC European Business Committee E-BCCH Extended Broadcast Control Channel EBCD Enhanced Booked Call Database EBCDIC Extended Binary-Coded Decimal Interchange Code EBCR Enhanced Busy Call Return EBE External Behaviorial Expression EBER Equivalent Binary Error Rate EBES Electron Beam Exposure System EBGP External BGP EBHC Equated Busy Hour Calls EBI End Bracket Indicator (SNA) EBI Even Bit Inversion EBIC Electron Beam Induced Current EBIT Electronic Bonding Implementation Team EBIU End of BIU EBL Electron Beam Lithography EBM Editing Boundary Mode EBM Error Correction and Burst Memory Controller EBNF Extended Backus-Naur Form EBO Executive Busy Override EBOBAS Executive Busy Override Basic EBOEBX Executive Busy Override Exempt EBOF Extension Block Object Framework EBOM Executive Busy Override on MADN EBONE European IP Backbone EBOT Executive Busy Override Tone EBOX Executive Busy Overide Exempt EBP Extended Base Pointer EBR Electron-Beam Recording EBS Electron Bombarded Silicon EBS Electronic Business Service EBS Electronic Business Set EBS Emergency Broadcast System EBS Engineering and Business Systems Inc. EBSG Elementary Basic Service Group EBSS European Binary Signalling System (1200 bit/s) EBTN European Backbone Telecommunications Network EBU European Broadcasting Union EBV Elektronische Bild Verarbeitung EBW Effective Bandwidth EBX Executive Busy Override Exempted EBX Extended Base Register EC Earth Calling EC Echo Canceler EC Echo Cancellation EC Echo Canceller EC Echo Check EC Echo Controller EC E-Core EC Edition Code EC Electrical Communication (periodical) EC Electronic Commerce EC Engineering Change EC Engineering Complaint EC Environmental Compatibility EC Equipment Controller EC Equivalent Capacity EC Erase Character EC Error Code EC Error Correction EC Escape Character EC European Commission (new name for CEC) EC European Community (now EU) EC Exchange Carrier EC Exchange Classification EC Extended Control EC ISO country code for Republic of Ecuador Ec/No Ratio of energy per modulating bit to the noise spectral density ECA Echo Suppression Allowed ECA Element Control Application ECA Emergency Changeover Acknowledgement message ECA Engineering Change Announcement ECA Exchange Carrier Association ECAC European Civial Aviation Conference ECAN Echo Cancellation ECAN Echo Canceller ECATI European Conference of Associations of Telecommunications Industri es ECB Electrically Controlled Birefringence ECB Electronic Code Book ECB Event Control Block ECB Extension Control Block ECBF European Citizen's Band Federation ECBM Echo Canceller Burst Mode ECC Echo Canceller Control ECC Electrical Cross-Connect ECC Electronic Common Control ECC Elliptic Curve Cryptosystem ECC Embedded Communication Channel ECC Embedded Communications Channel ECC Embedded Control Channel ECC Error Checking and Correction ECC Error Control Code ECC Error Correcting Code ECC Error Correcting Code ECC Error Correction Checking ECC Error Correction Code ECC Error-Correction Coding ECC Expanded Community Calling ECCB Extended Call Condense Block ECCC European Coordination Committee for Certification ECCM Electronic Counter-Counter-Measures (Military) ECCP Error Correction Coprocessor ECCS Economic CCS ECCV Enhanced Charge Card Validation ECD Echo Suppression Denied ECD Enhanced Call Disposition ECD Enhanced Compact Disk ECD Equipment Configuration Data ECD Equipment Configuration Database ECD Eraseable Compact Disk ECD Error Correction Device ECDB Electronic Chart DataBase (ECDIS) ECDIE Electronic Chart DIsplay Equipment ECDIS Electronic Chart DIsplay System (ship-navigation) ECDO Electronic Community Dial Office ECDR Expanded Call Detail Record ECE Echo Control Equipment ECE Economic Commission for Europe ECF Echo Control Factor ECF Enhanced Call Forward ECF Enhanced Connectivity Facility (SNA) ECFRN European Consultative Forum for Research Networking ECG Electro Cardio-Gram (Medical) ECH Echo Canceled Hybrid ECH Echo Canceler with Hybrid ECH Echo Cancellation ECH Erase Character ECHO European Commission Host Organization ECHS Extended CHS ECI Echo Control Information ECI Egress Context Identifier ECI End Chain Indicator (SNA) ECI Equipment Catalogue Identifier ECI Explicit Congestion Indication ECI Extended Call Interface ECIC Electronic Communications Implementation Committee ECIC Electronic Communications Implementors Committee ECIC Equal-access Carrier Identification Code ECIF Electronic Communications Implementation Forum ECIS Embedded Common Channel Interoffice Signaling ECISS European Committee on Iron and Steel Standardization ECIT European Committee for Information Technology ECITC European Committee for Information Technology Testing and Certific ation ECJ European Court of Justice E-CKEY Encrypted E-KEY ECKO Eddy-Current-Killed Oscillator ECL Effective Code Length ECL Emitter-Coupled Logic ECLT External Code Linking Toolkit ECM Coordination Management ECM Electronic Cipher Machine ECM Electronic Contrast Modulation (Electronic Imaging) ECM Electronic Counter-Measures (Military) ECM Emergency Changeover Message ECM Engineering Change Memorandum ECM Entitlement Control Message ECM Error Control Mode ECM Error Correction Mode (facsimile) ECM Extended Call Management ECMA European Computer Manufacturers' Association ECMA TC 32 Communication, Networks and Systems Interconnection ECMS Extended Change Management System ECN Engineering Change Notice ECN Engineering Change Notification ECN ERMES Code Number ECN Explicit Congestion Notification ECO Electron Coupled Oscillator ECO Electronic Central Office ECO Emergency Changeover Order message ECO Emergency Cutoff ECO Engineering Change Order ECO Engineering Control Office ECOM Electronic Computer Originated Mail ECOOP European Conference on Object-Oriented Programming ECORE Enhanced Core ECOS End-to-End Class of Service ECOSOC ECOnomic and SOcial Committee ECP Encryption Control Protocol ECP Engineering Change Proposal ECP Enhanced Capabilities Port ECP European Common Proposal ECP Executive Cellular Processor ECP Executive Control Program ECP Extended Capabilities Port ECPA Electronic Communications Privacy Act ECPC Executive Cellular Processor Complex ECR Electronic Cash Register ECR Explicit Cell Rate ECRB Executive Change Review Board ECREEA European Confederation of Radio and Electronic Equipment Associati ons ECRM Echo Cancellation Resource Module ECRP Earcap Reference Point ECRTSIM Enhanced CRTSIM ECS Electronic Commerce Services ECS Encryption Control Signal ECS Enterprise Communications Server ECS Entity Coordinate System ECS Entrance Criteria Screener ECS Entropy-Coded Segment ECS Environmental Control System ECS European Communications Satellite ECSA European Computing Services Association ECSA Exchange Carrier Standards Association ECSA Exchange Carrier Standards Association (USA) ECSDS Enterprise Computing Systems Data Systems ECT Early Cut-Through ECT Explicit Call Transfer (supplementary service) ECTEL European Conference of Telecommunications and Professional Electro nic Industries (ES) ECTEL European Telecommunication and Professional Electronics Industry ECTF Enterprise Computer Telephony Forum ECTP Ethernet Configuration Test Protocol ECTRA European Committee for Telecommunications Regulatory Affairs ECTS Echo Canceller Testing System ECTS ENET Integrity Check Traffic Simulator ECTUA European Council of Telecommunications User Associations ECU EISA Configuration Utility ECU Electronic Control Unit ECU Environmental Control Unit ECU European Currency Unit ECU European Currency Unit ECW Emergency Calls in Wireless ECW Even Control Word ECX Extended Count Register ED Edit ED Editing ED Electronic Design (periodical) ED End Delimiter ED End Designation ED End of Data ED Ending Delimiter ED Energy Dispersal ED ENVY/Developer ED Erase in Display ED Error Detection ED EWOS Document ED Expedited Data (EX) ED Extra-High Density ED&C Error Detection and Correction ED/ECC Error Detection and Error Correction Code EDA Efficient Defect Analyzer EDA Electronic Design Automation EDA Electronic Design Automation (CeBIT) EDAC Error Detection and Correction EDAP Extended Data Availability and Protection EDB Embedded Database EDB ESTELLE Debugger EDB Exchange Database EDBA Event-Driven Billing Architecture EDC Error Detecting Code EDC Error Detection and Correction EDC Error Detection Code EDC Export Development Corporation EDCH Enhanced D-Channel Handler EDCP Event Driven Call Processing EDD Earliest Due Date EDD Electronic Document Delivery EDD Electronic Document Distribution (DISOSS) EDD Element Definition Document EDD Envelope Delay Distortion EDD Equipment Data Dump EDDI Extended Disk Driver Interface EDDS Enhanced Dynamic Data Sync EDE Encrypt-Decrypt-Encrypt EDF Earliest Deadline First EDF Erbium-Doped Fiber EDF European Development Fund EDFA Erbium-Doped Fiber Amplifier EDFFA Erbium-Doped Fluoride Fiber Amplifier EDFG Edge Device Functional Group EDFP Event Driven Feature Processing EDGE Enhanced Data Rates for GSM Evolution EDH Electronic Data Handling EDH Electronic Document Handling EDI Electroni Document Interchange EDI Electronic Data Interchange EDI Enciphered Data Indicator (SNA) EDI Extended Destination Index Register EDIF Electronic Design Interchange Format EDIF Electronic Design Interchange Format (CAD/CAE) EDIFACT Electronic Data Interchange For Administration, Commerce and Trans port EDIFICE EDI Forum for the Electronics Industry EDIM Electronic Data Interchange Message EDIMS Electronic Data Interchange Messaging System EDIN Electronic Data Interchange Notification EDIP Electronic Document Image Processing EDIT Error Deletion by Iterative Transmission EDL Edit Decision List EDL Encapsulator Description Language EDM Embedded Delta Modulation EDM Employee Development Model EDM Enterprise Desktop Manager EDMX Enhanced Data Message Switch EDN EDN Magazine (periodical) EDNA EKTS Display With No Alerting EDNA Environment Distribution Network Administration EDNR Emergency Directory Number Route EDNR Emergency Directory Number Routing EDNR Emergency Dynamic Number Routing EDNS Enterprise-Defined Network Services EDO Extended Data Out EDOA Ermium-Doped Optical Amplifier EDORAM Extended Data Out RAM EDOSRAM Extended Data Out SRAM EDOVRAM Extended Data Out VRAM EDP Electronic Data Processing EDP Encrypted Data Processor EDP Enhanced Datagram Protocol EDP Event Detection Point EDP Extended Datagram Protocol EDPE Electronic Data Processing Equipment EDPM Electronic Data Processing Machine EDP-N Event Detection Point- Notification EDP-R Event Detection Point- Request EDR Early Developer Release EDR Engineering Data Reporter EDRAM Enhanced Digital Recorded Announcement Machine E-DRAM Enhanced DRAM EDS Electronic Data Switching system EDS Electronic Data Systems EDS Electronic Directory Service EDS Equipment Drawing System EDS Exchangeable Disk Storage EDSEA Enhanced Display Station Emulation Adapter EDSFA Erbium-Doped Silica Fiber Amplifier EDSL Extended Digital Subscriber Line E-DSPM Enhanced Digital Signal Processing Module E-DSS1 European Digital Subscriber Signaling System No. 1 EDSX Electronic Digital Signal Cross-Connect EDT Eastern Daylight Time EDT Electronic Design Transfer EDT Enhanced Data Transfer EDTC Enhanced Digital Trunk Controller EDTCC Electronic Data Traffic Control Computer EDTK Event Driven Trunk Call Processing EDTM Electrical Time-Division Multiplexing EDTU Enhanced Digital Test Unit EDTV Enhanced-Definition Television edu Educational institutions domain EDW Energy Dispersion Waveform EDX Enhanced Digital Switch EDX Extended Data Register EE Electrical Engineering Ee Entity End EE Equipment Engineering EE Extended Edition EE ISO country code for Estonia E-E End-to-End EE&Q Environment, Ethics & Quality EEA Electronic Engineering Association (UK) EEA European Economic Area (EFTA) EEA The Association of the Electronics, Telecommunications and Business Equipment Industries (UK) EEC Electrical Echo Canceler EEC Escrow Encryption Chip EEC European Economic Community EEC European Economic Community (no longer used, replace by EU) EECA European Electronic Component Manufacturers' Association EEE Electronic Equipment Enclosure EEE End-to-End Encryption EEG Electro-EncephaloGram (Medical) EEHO Either End Hop Off EEI External Event Information EEIG European Economic Interest Group EEL Edge-Emitting Laser EEL Electric Echo Loss EEL Electric Echo Loss EEM End to End Message EEM Enhanced Expanded Measurements EEMA European Electronic Mail Association EEMS Enhanced Expanded Memory Specification EEP Electrical Echo Path EEPOT Electrically Erasable programmable POTentiometer EEPROM Electrically Erasable Programmable Read-Only Memory EEPROM Electrically Erasable PROM EER Event Error Rate EER Extended Entity Relationship EEROM Electrically Erasable Read-Only Memory EES End-to-End Signaling EES Escrowed Encryption Standard EES European Economic Space EESS Earth Exploration Satellite Service EESSC End-to-End Signaling via Speed Calling EET Equipment Engaged Tone EETD End-to-End Transit Delay EETDN End-to-End Transit Delay Negotiation EEVP End-to-End Virtual Path EEVPN End-to-End Virtual Private Network EEWD Enhanced Exchange Wide Dial EF Elementary Function EF Enhanced Functions EF Enhancement Factor EF Envelope Function EF Erase in Field EF&I Engineer, Furnish, and Install EFB Error Free Block EFCI Explicit Forward Congestion Indication EFCI Explicit Forward Congestion Indicator EFCN Explicit Forward Congestion Notification EFCS Electronic Flight Control System EFD Endpoint Format Descriptor EFD Event Forwarding Discriminator EFD Event-Forwarding Discriminator EFDS Error Free DeciSeconds EFF Electronic Frontier Foundation EFF ElectronikFabrikant Foreningen (Association of Electronics Manufac turers (Denmark) EFF Extended Frame Format EFI Electronics for Imaging EFI Engineer, Furnish and Install EFI Errored Frame Indicator EFI Expedited Flow Indicator EFIE Extended Facility Information Element EFIS Electronic Flight Instrument System EFL Emitter Follower Logic EFM Eight-to-Fourteen Modulation (Coder/Decoder) EFPT European Feature Patch Team EFQM European Forum for Quality Management EFQM European Foundation for Quality Management EFR Enhanced Full Rate EFRAP Enhanced Frame Relay Access Processor EFRC Enhanced Full Rate Codec EFS Encrypting File System EFS End of Frame Sequence EFS Error Free Signal EFS Error-Free Seconds EFS External File Service EFSM Extended Finite State Machine eFSM Extended Finite State Machine EFT Electrical Fast Transient EFT Electronic Funds Transfer (Banking) EFT Extended Fundamental Types EFTA Europäische Freihandelsassoziation EFTA European Free Trade Association EFTPOS Electronic Funds Transfer at Point of Sale EFTS Electronic Funds Transfer System EFTT Enable Full Time Transmission EG Equipment Ground EG Europäische Gemeinschaft(en) EG Expert Group EG External Gateway EG ISO country code for Arab Republic of Egypt EG5 PAC Expert Group 5 (Mobile and Personal Communications) EGA Enhanced Graphics Adapter EGAD Education General Administration Database EGC Enhanced Group Call EGC Equal Gain Combining EGCT Expert Group in Conformance Testing EGP Exterior Gateway Protocol (TCP/IP-DoD) EGP External Gateway Protocol E-GSM Extended GSM EH Event Handler EH Exception Handling EH External Host EH ISO country code for Western Sahara EHB Extra Half Bright EHC Error Handling Category EHD Expected High Day EHDV Ergonomie et Harmonisation des Dialogues Vocaux EHF Extremly High Frequency (30...300 GigaHertz) EHKP4 Einheitliche Hohere Kommunikations Protokolle Ebene 4 (Unified Higher-Level Control Protocol for Level 4) EHKP5 Einheitliche Hohere Kommunikations Protokolle Ebene 5 (Unified Higher-Level Control Protocol for Level 5) EHLD EKTS Hold EHLLAPI Emulator High-Level Language API EHPT Ericsson Hewlett-Packard Telecommunications EHS Environmental, Health, and Safety EHS Exception Handling System EHT Exception Handling Team EHT Extremely High Temperature EHT Extremly High Tension (10 kiloVolt...) EHZ Einhangezeichen (On-Hook Signal) EHZA Einhangezeichen des A-Tln EI DDOC Section: Engineering Information EI Emergency Indication EI Enable Interrupt EI Error Indication EI Event Information EI Expected Integrity EI External Interface EI External Interrupt EIA Electronic Industries Association (USA) EIB Ethernet Interface Board EIC Equipment Installers Code EIC Ethernet Interface Card EICTS ENET Integrity Check Traffic Simulator EID Endpoint Identifier EIDE Enhanced Integrated Drive Electronics E-IDE Enhanced IDE EIES Electronic Information Exchange System (CCA/VTS) EIGRP Enhanced Interior Gateway Routing Protocol EIH Error Interrupt Handler EII Early Industry Interaction EII Electronic Image Industry EII European Information Infrastructure EIM Errored Interval Monitor EIM Ethernet Inverse Multiplexer EIM External Interface Module EIN Ethernet Interface Node EIN European Informatics Network EIN European Information Network EIOC Enhanced Input/Output Controller EIOP Enhanced International Operator Position EIP Electronic Image Processing EIP Equipment Installation Procedure EIP Ethernet Interface Paddle Board EIP Extended Instruction Pointer EIP Extended Internet Protocol EIR Engineering Information Report EIR Equipment Identification Register EIR Equipment Identification Register EIR Equipment Identity Register EIR Excess Information Rate EIR Excessive Information Rate EIRMA European Industrial Research Management Association EIRP Effective Isotropic Radiated Power EIRP Equivalent Isotropic Radiated Power EIRP Equivalent Isotropically Radiated Power EIS Electronic Information Systems EIS Emulator Interface Specification EIS Executive Information System EIS Expanded Inband Signaling EISA Extended Industry Standard Architecture EISCAT European Incoherent SCATter facility EISP Enhanced ISDN Signaling Preprocessor EISSC Executive Information Systems Steering Council EIT Encoded Information Type EIU Ethernet Interface Unit EIUF European ISDN Users Forum EIV Encryption Initialization Vector EJ Electronic Journalism EJB Enterprise JavaBeans EJOB European Joint Optical Bistability Project EKBCEB EKTS Bridged Call Exclusion Billing Records EKDNBB EKTS Directory Number Bridging Billing Records EKE End System Key Exchange E-KEY Expected KEY EKICB EKTS Intercom Calling Billing Records EKSRTB EKTS Station Ringing Transfer Billing Records EKTS Electronic Key Telephone Service EKTS Electronic Key Telephone Set EKTS Electronic Key Telephone System EKTSAM EKTS Analog Member EKUBB EKTS User Bridging Billing Records EL Echo Loss EL Electro Luminescence EL Electroluminescent EL Electronic Library EL Element Layer EL ELevation EL Encode Level EL Engineering Letter EL Erase in Line EL Erase Line EL Exchange Line ELA ELektroAkustik ELAN Emulated Local Area Network ELAN European Local Area Network E-LAN Extended Local Area Network ELC Exchange Line Capacity ELCB Earth Leakage Circuit Breaker ELCM Enhanced Line Concentrating Module ELCOM Electrical Communication (periodical) ELD Enhanced Line Drawer ELEPL Equal Level Echo Path Loss ELF Entry Leadership Forum ELF Error Logging Facility ELF Executable and Linking Format ELF Extensible Linking Format ELF Extension Language Facility ELF Extremely Low Frequency ELF Extremely Low Frequency (3- 10 kHz) ELLC Enhanced Logical Link Control ELMS Element Layer Management System ELN Essential Line ELOBA Events, Logs, OMs, Billing, Alarms ELOT Hellenic Organization for Standardization ELOT Hellenic Organization for Standardization (GR) ELP Encode Level Point ELPP Enhanced Link Peripheral Processor ELR Earth Loop Recall ELS Entry Level Solution ELSEC Electronic Security ELSI Extra Large Scale Integration ELT Emergency Locating Transmitter ELT Emergency-Load-Transfer signal ELT Extension Load Tape ELV Edit Level Video ELV Electrical Low-Voltage ELW Editable List Widget EM E&M EM Edit Message EM Electromechanical EM Electromigration EM Electronic Mailing EM Element Management EM Element Manager EM Emphasis (HTML tag) EM Emulate Coprocessor EM Emulation EM End of Medium EM Engineering Manual EM Enterprise Module EM Environment Monitor EM Error Monitoring EMA Electronic Mail Association (USA) EMA Electronic Messaging Association EMA Enterprise Management Architecture (DEC) EMA Excellence! Maturity Assessment EMACS Editing Macros Emacs Extensible Macro-Customizable Self-Documenting Editor EMAG ETSI MIS Advisory Group email Electronic Mail EMAIL Electronic MAIL EMAU Ethernet Media Access Unit EMB Extended Memory Block EMBARC Electronic Mail Broadcast to a Roaming Computer EMBC European Molecular Biology Conference EMC Electromagnetic Compatibility EMC Embedded Maintenance Channel EMC Enhanced Multipurpose Cabinet EMC Equipment Manufacture Code EMD Edelmetall Motor Drenwahler (Analog Mechanical Switch) EME Earth-Moon-Earth radio path EMERALD Enhanced Measurement for Early Risk Assessment of Latent Defects EMF ElectroMagnetic Field EMF Electromotive Force EMF Enhanced Metafile EMF Enhanced Metafile Format EMF Environment Manager Function EMF Event Management Framework EMG Environment Manager Global EMI Electromagnetic Interference EMI Enable Manual Input EMI Exchange Message Interface EMI External Memory Interface EMIC ESTU Module Interface Card EMIRTEL Emirates Telecommunications Corporation EMK Emergency Key EML Element Management Layer EML Expected Measured Loss eMLPP Enhanced Multi-Level Precedence and Preemption EMM Entitlement Management Message EMM ESTU Master Module EMM Event Measurement Mapping EMM Expanded Memory Manager EMMI Electrical Man Machine Interface EMMS Electronic Mail and Messaging Systems EMN Enterprise Meeting Notice EMP Electromagnetic Pulse EMPC Enhanced Multiprotocol Controller EMPC Enhanced Multi-Purpose Controller EMR ElectroMagnetic Radiation EMR ElectroMechanical Relay EMR Exchange Message Record EMRLD Emergency Recovery Log Database EMRP Effective Monopole-Radiated Power EMS Electronic Mail System EMS Electronic Messaging Service (e-mail) EMS Element Management System (ATT) EMS Engineering Modelling System (CAD/CAE) EMS Enhanced Maintenance Server EMS Enterprise Management Systems EMS Enterprise Messaging Server EMS Equivalent Series Resistance EMS Event Management Service (DSM-Tandem) EMS Expanded Memory Specification EMS Expanded Memory System EMS Express Mail Service EMS Extended Memory Standard EMSOG Multiservice Systems Operations Guide EMSS Electronic Message Service System EMT Emulator Trap EMT Environment Manager Type EMU Economic Monetary Union EMU Element Management Unit EMUG European MAP User Group EMUG European MAP Users' Group EMV Europay, MasterCard, Visa EMW Executive Message Waiting EMWAC European Microsoft Windows NT Academic Centre EN Edit Notification EN Enable EN Entry EN European Norm EN European Standard (CEN/CENELEC) EN Exchange Node ENAC Engineering Network Administration Center ENAC European Network and Application Center ENADS Enhanced Network Administration System ENB Effective Noise Bandwidth ENC Electronic Navigational Chart ENC ENET Cabinet ENCP Enhanced Network Central Processor ENDB ENET Database Audit ENDEC Encoder/Decoder Endwrd indicates last code word of a packet ENE Enterprise Network Event (MAP/TOP) ENET Enhanced Network ENF Exchange and Network Features (CEPT) ENFIA Exchange Network Facilities for Interstate Access ENG Electronic News Gathering ENG Electronic News Gathering ENG Engaged ENHCWT Enhanced Call Waiting ENI Enable Interrupts ENIAC Electronic Numerical Integrator Analyzer and Computer ENIAC Electronical Numerical Integrator & Calculator (Mauchly 1946) ENIP Exception-Time Next Instruction Pointer ENL Number of LSBs to be compared when operating outside home network ENMC Enterprise Networks Management Center ENO Enable Output ENOB Effective Number Of Bits ENQ Enquiry ENR Emergency Number Routing ENR Enterprise Network Roundtable ENS Enterprise Naming Service ENS Enterprise Network Services ENS Enterprise ENS European Nervous System ENS Event Notification Server ENSO ETSI National Standardization Organization ENSS European Navigation Satellite System ENSS Exterior Nodal Switching Subsystem ENT Enter ENT Entry ENUM Enumeration ENV Environment ENV European Pre-Norm ENV European Pre-Standard (CEN/CENELEC) EO Elementary Objectives EO End Office EOA End of Address EOB End of Block EoB End of Bus EOB End of Business EOBS Engineering and Operations in the Bell System, First Edition, 1997 EOBS2 Engineering and Operations in the Bell System, Second Edition, 198 3 EOC Edge Of Coverage EOC Embedded Operations Channel eoc Embedded Operations Channel EOC End Of Card EOC End of Contents EOC End Of Conversion EOC Physical EOC Channel EOD End of Data EOD End of Dialing EOD End Office Display EOF End of Data Set Trailer Label EOF End of File EOF End Of Form EOF End of Frame EOF Enterprise Objects Framework EOF1 End-of-Data Set Label 1 EOF2 End-of-Data Set Label 2 EOFB End of Facsimile Block EOH End Of Heading EOI End Of Identity (IEEE-488 Bus Signal) EOI End of Image EOI End of Information EOJ End of Job EOL End Of Letter EOL End of Life EOL End of Line EOL End of Option List EOLR Electrical Objective Loudness Rating EOM Electro-Optical Module EOM End of Message EON End Of Number EOP Early Outpulsing EoP End of Optional Parameters EOP End of Outpulsing message EOP End Of Procedure EOP End of Process EOP End of Program EOP End of Pulsing EOPS Enhanced Operator Position System EOPS Extended Operator Position Service EOQ European Organization for Quality EOQC European Organization for Quality Control EOR End of Record EOR End of Recording EOR End Of Reel EOR End Of Retransmission EOR End Of Run EOS Electrical Over-Stress EOS End Of Scan EOS End of Selection message EOS End of Statement EOS Enhanced Operator Services EOS Extended Operating System EOSR Expanded Operator Services Record EOT End of Tape EOT End of Tone EOT End Of Trace (Digital Storage Scope) EOT End of Transmission EOT End Office Tandem EOTC European Organization for Testing and Certification EOTC European Organization for Testing and Certification EOUG European Oracle User Group EOV End of Volume EOW Engineering Order Wire EOW Engineering Orderwire EOW Enhanced Outward WATS EP Emulation Program EP End Point EP Equipment Practice EP Equipment Practice (CEPT) EP ESA Processor EP Estimated Position (ship-navigation) EP ETSI Project EP Europäisches Parlament EP European Parliament EP Extended Play (discs) EP External Priority EPA End of Protected Area EPA Enhanced Performance Architecture (MAP) EPA Environmental Protection Agency EPA Equilibrium Point Analysis EPAC Extended Privilege Attribute Certificate EPB Energy-Pulse Bonding EPBX Electronic Private Branch Exchange EPC Earth Potential Compensation EPC Electronic Power Conditioner EPC Ethernet Paddle Card EPCI Enhanced Programmable Communications Interface EPD Early Packet Discard EPDB Exchange Production Database EPDF Embedded PDF EPFS Electronic Position Fixing System (ship-navigation) EPG Electronic Program Guide EPHOS European Procurement Handbook for Open Systems EPI Error Power Indicator EPI External Presentation Interface EPIC Electronic Privacy Information Center EPIC Emulating and Programmable Intergrated Circuits (RCA Inc.) EPIC Explicitly Parallel Instruction Computing EPIC Extended PCM Interface Controller EPIRB Emergency Position-Indicating Radio Beacon EPL Echo Path Loss EPL Effective Privilege Level EPL Electronic Price Label EPLD Electrically Programmable Logic Device EPLD Erasable Programmable Logic Device EPN End Point Number EPNR Expanded Private Network Record EPO Electronic Payment Order EPO Error Performance Objective EPOC Embedded Protected Operations Channel EPODD Electronic Publishing: Origination, Dissemination and Design EPOS Electronic Point Of Sale EPOSR Expanded Private Operator Services Record EPOTS Enhanced POTS EPP Enhanced Parallel Port EPP ETSI Partnership Project EPPA European Public Paging Association EPPV Enhanced Pay-Per-View EPR Ethylene Propylene Rubber (Cable Insulation) EPRCA Enhanced Proportional Rate Control Algorithm EPROM Erasable Programmable Read-Only Memory EPS Electronic Publishing Services Ltd. EPS Encapsulated PostScript EPSCS Enhanced Private Switched Communications Service EPSF Encapsulated PostScript Format EPSI EPS Interchange EPSR Exception-Time Processor Status Register EPSS Experimental Packet-Switching Service (UK) EPT Engineering/Provisioning Tool EPV Entry Point Vector EQ Equal To EQ Equalizer EQ Equipment EQAC Equal Access EQC Equipment Class EQE Equalization Enable EQI Equipment Identifier EQI ETSI Quality Index EQL EQuaLiser EQM ETSI Quality Management (programme) EQN Equation EQPEC Equipment Product Engineering Code eqpt Equipment EQR Electronics Quality Registry EQTV Extended Quality Television EQU Equate EQU_ACC Equal Access EQWT Equippage, Wrong Type ER Echo Replica ER Elastic/Rigid ER Electronic Radiology ER Engineering Route ER Entity Relationship ER Entity-Relationship ER Equipment Register ER Ericsson Review (periodical) ER Error ER Event Register ER Exception Report ER Explicit Rate ER Explicit Route ER Extended Range ER ISO country code for Eritrea ER PDU Error Data Protocol Unit (OSI-TP) ERA Entity Relationship Attribute ERAM Egress RAM ERASMUS EC Actions Scheme for the Mobility of University Students ERB Emergency Ringback ERBIS Einheitliches rechnergestutztes Betriebsinformationssystem (OAM application for providing on-line documentation) ERC Electrical Rule Checking ERC European Radio Commission ERC European Radiocommunications Committee ERC Explicit Rate Control ERC Explicit Route Control ERCC ERror Checking and Correction ERCO Entry Rules Control Object (CCA/VTS) ERCS Extended Reference Concrete Syntaxes ERD Emergency Recovery Display ERD Entity Relationship Diagram ERE Extended Regular Expression ERF Event Reporting Function ERG Electro RetinoGram ERI Exception Response Indicator (SNA) ERL Echo Return Loss Erl Erlang ERL ERror Line ERLC Extended Range Line Card ERLE Echo Return Loss Enhancement ERLL Enhanced Run Length Limited ER-LSP Explicitly Routed Label-Switched Path ERM EMC and Matters ERM Erasure Mode ERM Explicit Rate Manager ERM Explicit Rate Marking ERMES European Radio Message System ERMES European Radio Messaging Service ERMES European Radio Messaging System ERMF Event Report Management Function ERN Explicit Route Number (SNA) ero Entity Reference Open ERO European Radio Office ERO European Radiocommunications Office ERO Explicit Route Object EROS Emitter-Receiver for Optical Systems EROS European Ranging Observations to Satellites EROW Executive Right of Way ERP Ear Reference Point ERP Effective Radiated Power ERP Enterprise Resource Planning ERP Equivalent Radiated Power ERP Error Recovery Procedure ERP Estimated Retail Price ERR Error ERR Error message ERR Protocol Data Unit Error ERR Response to end of Retransmission ERS Electronic Register- ERS Emergency Reporting System ERS Engineering Requirement Specification ERS European Remote sensing Satellite ERS Event Reporting System ERS Existential Refusal Set ERS Extended Ring Search ERT Emergency Response Team ERT Enhanced Remote Thumbwheel ERT Estimated Repair Time ERT Event Register Temporary ER-TPOU Error Transport Data Protocol Unit ERTS Error Rate Test Set ERU Emergency Recovery Utility ERV Enhanced Roamer Validation ERWM Expensive Route Warning Message ERWT Expensive Route Warning Tone ES Earth Station ES Echo Suppressor ES Edit Style ES Emergency Service ES Emergency Services ES End Station ES End System ES Enhanced Security ES Errored Second ES Errored Seconds ES ETSI Secretariat ES European Standard ES Exception Summary ES Expanded Spectrum ES Expert System ES Extra Segment ES ISO country code for Spanish State (Spain) ESA Editing and Standards Approval department (ETSI) ESA EFTA Surveillance Authority ESA Emergency Services Adjunct ESA Emergency Stand Alone ESA End of Selected Area ESA Enterprise System Architecture (MVS/IBM) ESA European Space Agency ESA European Statistics Administration ESA Extended Service Area ESA Extended System Architecture ESAC Electronic Surveillance Analysis Center ESAC Electronic Switching Assistance Center ESAC Electronic Systems Assistance Center ESAC Emergency Stand-Alone Circuit ESAT Employee Satisfaction ESAT Employee Satisfaction Action Team ESAT Employee Satisfaction Team ESB Emergency Service Bureau ESB European Standardization Board ESBC Emergency Services Bureau Capability ESBC Emergency Services Bureau Compatibility ESBC Enhanced Single-Board Computer ESBT Emergency Services Bureau Terminability ESC Echo Suppressor Control ESC Emergency Services for China ESC Engineering Service Circuit ESC Enhanced Services Complex ESC Escape ESCA Electron Spectroscopy for Chemical Analysis ESCLIST Escape List ESCO Emergency Service Central Office ESCON Enterprise Systems CONnection ESCORT EBU system for the classification of radio and television programm es ESCR Elementary Stream Clock Reference ESD Electronic Software Delivery ESD Electronic Software Distribution ESD Electrostatic Discharge ESD Electrostatic Sensitive Device ESD End of Stream Delimiter ESD End System Designator ESD Errored Seconds Daily Threshold ESD European Standards Database (CEN) ESD Extended State Diagram ESD External Symbol Dictionary ESDI Enhanced Small Device Interface ESDI Enhanced Small Disk Interface ESDN Enhanced Secondary Directory Number ESDS Electrostatic Discharge Sensitive ESDS Entry Sequenced Data Set ESE Encapsulated Software Entities ESEL Electronic Shelf Edge Labelling ESF Edge Spread Function (Imaging) ESF European Science Foundation ESF Extended Super Frame ESF Extended Superframe ESF Extended Superframe Format (ATT) ESF Extended Superframe Format (Digital Datacommunications) ESG Emergency Service Group ESG Emergency Services Group ESH Embedded Shell ESH End System Hello ESH Errored Seconds Hourly Threshold ESHO Extended Soft Hand-Off ESI End Station Identifier ESI End System Identifier ESI Enhanced Service Initiative ESI Environment Science Index ESI Equivalent Step Index (Profile) (Optical Data Communications) ESI Extended Source Index Register ESI External Synchronisation Input ESI External Synchronization Interface ESID Effective Segment ID ESIG European SMDS Interest Group ESIG European SMDS Interest Group ESIOP Environment-Specific Inter-ORB Protocol ESIS Element Structure Information Set ESIS End System to Intermediate System ES-IS End System to Intermediate System protocol ESL Essential Line ESL Essential-Service Line ESLAM Essential Line for Analog Member of EKTS ESLIC Enhanced Subscriber Line Interface Circuit ESLUA European SL-1/Meridian 1 Users Association ESMA Expanded Subscriber Carrier Module Access ESME External Short Message Entity ESMR Enhanced Specialized Mobile Radio ESMR Extended Specialized Mobile Radio E-SMR Enhanced Specialized Mobile Radio ESMS Echo Suppressor Measuring Set ESMTP Extended SMTP ESMTP Extensions to SMTP ESMU Enhanced Subscriber Carrier Module Urban ESN Electronic Serial Number ESN Electronic Switched Network ESN Electronic Switching Network ESN Emergency Service Number ESN Enhanced Services Network ESO Echo Suppressor, Originating ESO Emergency Service Order ESO European Space Observatory (in Chile) ESO European Space Organization ESO European Standardization Organization ESO External Synchronisation Output ESOC European Space Operation Centre ESOG EUTELSAT Systems Operations Guide ESP Employee Services Portfolio ESP Encapsulating Security Payload ESP End of Speaker Identification ESP Engineering Services Practices ESP Enhanced Serial Port ESP Enhanced Service Provider ESP Enhanced Services Protocol ESP Enhanced Services Provider ESP Essential Service Protection ESP Estimated Sale Price ESP Extended Stack Pointer ESPA Equipment Space Planning Algorithm ESPA European Selective Paging Association ESPC No. 1 ESS Stored Program Control ESPCS Enhanced Private Switched Communications Service ESPG Equipment Space Planning Guideline ESPN Entertainment and Sports Programming Network ESPP Enhanced Service Provisioning Plarform ESPRIT European Strategic Programme for Research and development in Infor mation Technology ESR Equivalent Series Resistance ESR Errored Second Ratio ESR Event Service Routine ESR Extended Self-Contained Ring ESR Extended Spectral-Response ESRB Entertainment Software Ratings Board ESRO Efficient Short Remote Operations ESS Electronic Switching System (Bell) ESS Enhanced Surveillance Services ESS Environmental Stress Screening ESS European Standardization System ESS Extended Service Set ESSE Embedded Systems Software Environment ESSI Enhanced Synchronous Serial Interface EST Eastern Standard Time EST Echo Suppressor Terminal EST Echo Suppressor, Terminating EST Enhanced Service Testing EST Environmental Stress Testing EST Establish EST Establish hunt or call pickup group ESTEC European Space research and TEchnology Centre ESTELLE Extended finite State Transition Language ESTO Electronic Systems Technology Office ESTS Echo Suppressor Testing System ESTU Enhanced Services Test Unit ESU Empty Signal Unit ESU Exhange Signaling Unit ESUG European Smalltalk User's Group ESV Extended State Variable ESW Embedded Software ESWL Extracorporeal Shock-Wave Lithotripsy (Medical) ESZ Emergency Service Zone ET Eject Tape ET Elapsed Time ET Electrical Typewriter ET Emerging Technologies ET End Terminal ET Engaged Tone ET Ephemeris Time ET Exchange Terminal ET Exchange Termination ET Exchange Terminator ET Extension Type ET ISO country code for Ethiopia ETA Enhanced Terminal Access ETA Estimated Time of Arrival ETAC Electronic Technical Assistance Center ETACS Extended Total Access Communications System ETACS Extended Total Access System Etag End Tag ETAS Emergency Technical Assistance Service ETB End of Transmission Block ETC Electronic Toll Collection ETC Enhanced Throughput Cellular ETCCC European Testing and Certification Coordination Council ETCI Electro-Technical Council of Ireland (IRL) ETCO European Telecommunications Consultancy Organization ETCOM European Testing & Certification for Office and Manufacturing (Agr eement Group) ETCOM European Testing for Certification for Office and Manufacturing Pr otocols ETDC Electronic Traffic Data Converter ETDM Electrical Time Division Multiplexing ETDMA Extended Time Division Multiple Access E-TDMA Enhanced TDMA E-TDMA Extended TDMA ETE End-To-End ETE Equivalent Telephone Erlangs ETFCC Elapsed Time From Carrier Connect ETFTP Enhanced Trivial File Transfer Protocol ETG EWOS Technical Guide ETG EWOS Technical Guide ETH (Swiss Federal Institute of Technology) ETH Eidgenossische Technische Hochschule ETHERIP Ethernet within IP ETI External Traffic Indicator ETL Effective Testing Loss ETLA Extended Three-Letter Acronym ETM Element Test and Maintenance ETMS Enhanced TOPS Message Switch ETN Electronic Tandem Network ETNA Ericsson Transport Network Architecture ETNF European Telecom Numbering Forum ETNO Association of Public Telecommunications Network Operators ETNO European Telecommunications Network Operators' Association etno micro (10-6) ETNS European Telephony Numbering Space ETO Equalized Transmission Only ETOM Electron-Trapping Optical Memory ETP Event Transition Procedure ETP Expertise Training Plan ETPS Enhanced Toll Position System ETR Early Token Release ETR Electronically Tuned Receiver ETR Enhanced Tip/Ring ETR Estimated Time of Restoral ETR Estimated Time to Restore ETR ETSI Technical Report ETR European Technical Report ETS Electronic Tandem Switch ETS Electronic Tandem Switched ETS Electronic Tandem Switching ETS Electronic Telephone Set ETS Electronic Translator System ETS Enhanced Time Switch ETS Enterprise Technology Services ETS Equivalent Time Sampling ETS European Telecommunication Standard (ETSI) ETS European Teleprocessing Systems ETS Executable Test Suite ETS-4 Electronic Tandem Switch-4 Wire ETSA European Telecommunication Services Association ETSAG European Telecommunications Standards Awareness Group ETSBES Electronic Tandem Switching Billing Enhancements ETSDU Expedited Transport Service Data Unit ETSI European Telecommunications Standards Institute ETUC European Trade Union Confederation ETV Educational Television ETV External Testcase Verification ETW Enhanced Two-Way WATS ETX End of Text EU End User EU European Union (new name for EEC) EU Execution Unit EU External Update EUC End-User Control EUC Extended Unix Code EUCATEL EUropean Conference of Associations of TELecommunication industrie s EUCL End User Common Line EULA End-User License Agreement EUM Extended Unsuccessful Backward Setup Information message EUMETSAT EUropean METeorological SATellite system EUN External Update Notification EUNET European Unix NETwork EUPIC End User's Presubscribed Interexchage Carrier EUR End User Role EURATOM EURopean ATOMic energy community EUREKA Europäische Forschungskoordinationsagentur EUREKA EURopean initiative for collaborative research EUREKA European Research Coordination Agency EURESCOM European Institute for Research and Strategic Studies in Telecommu nications EURO- TECH Technisches Komitee des EACEM EUROCAE EURopean Organisation for Civil Aviation Equipment EUROCONTROL European Organisation for the Safety of Air Navigation EUROTECH EACEM Technical Committee EUSIDIC European Association of Information Services EUT Equipment Under Test EUT Equipment Under Test EUTELSAT European Telecommunication Satellite Organization EUTELSAT European Telecommunications Satellite Organization EUUG European UNIX User Group EUV Extreme Ultra Violet eV Electron Volts eV electronVolt EV Encoding Variation EV Environment Variable EV Equipment View EV Event EV Extreme Value EVE European Videoconference Experiment EVE Extreme Value Engineering EvI Event Information EVK Evaluation Kit EVL Evolution Rule Language EVM Event Management Layer EVP EnVeloPe EVP Executive Vice President EVRC Enhanced Variable Rate Coder EVS Enhanced Voice Services EVS Event Services EVS Expense Vouchering System EVSB Extensible VERSAbus EVT Exception Vector Table EVUA European Virtual Private Network Users Association EVX Electronic Voice Exchange EW Electronic Warfare EWAL Enhanced WATS Access Line EWB ETAS Warning Bulletin EWE Engineering Workstation Environment EWG Europäische Wirtschafts Gemeinschaft EWI E-mail Waiting Indication EWL Exchange Work List EWOS European Workshop for Open Systems EWOS European Workshop on Open Systems EWP Electronic White Pages EWP ETSI Work Programme EWP Extended Warranty Plan EWS Electronic Work Station EWS Elektronisches Wahlsystem (Siemens electronic switching system) EWS ESTELLE Work Station EWSD Elektronisches Wahlsystem Digital (Siemens digital switching syste m) EWSD Elektronisches Wahlvermittlungssystem Digital (Siemens digital swi tching system) EWSM Elektronisches Wahlsystem, MAN (Electronic Switching System, MAN) EWT Estimated Work Time EWTN Eternal Word Television Network EX Execute EX Exercise EX Exit Notification EX EXpedited data EX Instruction Execution EXB Extension Bridging EXC Exception ExCA Exchangable Card Architecture EXCA Exchangeable Card Architecture EXCL Exclusive EXCON Expand and Concentrate EXD MDII: Address Signaling Error- Extra Digit EXE Executable EXE Executable File EXE EXEcute EXEC Executable EXEC Execute EXEC EXECute EXECOM ETSI Executive Committee EXIP Exception-Time Execution Instruction Pointer EXM Exit Message EXND External Node EXP EXPonential function EXP Exports file EXP MDII: Address Signaling Error- Extra Pulse EXR Exception Request EXRL Exception Rate Line EXRQ External Request EXT Extension Ext Extension EXT Extension File EXT Extension Shelf EXT External EXT External Alarms EXT SRC Extended Search EXTC Extend Call message ExT-ID Exchange and Trunk Identity EXTN Extension EXTND Extended ExTS Executable Test Suite EYP Electronic Yellow Pages eZIF Electrically-Activated Zero Insertion back to top|0-9|A|B|C|D|E - F - G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

F "Final character" registered by ISO 2022 registration authority F Failed F Farad F Farenheit F Fellow F Final F Final bit F Fixed F Fixed length F Flag F Flow F Forecast F Forward Compatibility F Framing F French f Frequency F FTAM Service F Fully Associated (link) F Future F&A Facilities and Equipment System F/B Fuse Block F/RSC Fiber Remote Switching Center F/SSS Facility/Service Selective Signaling F/W Firmware F/W Framework F/X Effects f1 frequency 1 f2 frequency 2 F2F Face to Face F2XM1 FP Compute 2**x- 1 (80x86 inst) FA FachAusschuß FA Facility Agent FA Factory Automation FA Fast Acting FA Fast Answer FA Fax Adapter FA Feature Activation FA Feature Activation information element FA Feature Activator FA Feature Activators FA Fermeldeampt (Data Processing Regional Area) FA Fernmeldeamt (Telecommunication Office) (Telecommunications Exchan ge) FA File Administrator FA First Available FA Foreign Agent FA Forwarding Agent FA Frame Address FA Frame Alignment FA Framework Technical Advisory FA Fremdanschaltung (ISDN out-of-area connection) FA Full Allocation FA Functional Area FA Fuse Alarm FAA Facility Accepted Message FAA Federal Aviation Administration FAA Federal Aviation Agency (USA) FAA Forced Agent Availability FAAR Fixed Automatic Alternative Routing FAC Facilities Administration Center FAC Facility Fac Facility FAC Facility Message FAC FACsimile FAC Fan Alarm Card FAC Final Assembly Code Fac i Facility Indicator FACBC Facility Number Bearer Capabilities FACCH Fast Associated Control Channel FACCH/F Fast Associated Control Channel/Full Rate FACCH/F Full rate Fast Associated Control CHannel FACCH/H Fast Associated Control Channel/Half Rate FACCH/H Half rate Fast Associated Control CHannel FACD Facility Accepted message FACD Foreign Area Customer Dialing FACE Field-Alterable Control Element FACET Flexible Advanced Capacity Engineering Tool FacI i Facility Information Indicator FACID Facility Number FACREQ Facilities Request FACS Facilities Assignment and Control System FACS Facility Administration Control System FACSFG Facility Number/Simulated Facility Groups Association FACT BRI Feature Activator Indicator Trigger FACT First Application Conformance Test FACT Functional Auditable Combined Testing FAD Facility Access Digroup FAD Facility Deactivated Message FADN Feature Activators Per DNCT FADS Force Administration Data System FADSHADS FADS Hotel Administration Data System FADU File Access Data Unit (FTAM) FAF Facility Failure FAFI Feature Activator/Feature Indicator FAFI Paired Feature Activators-Feature Indicators FAFIDN Paired Feature Activators-Feature Indicators Per DNCT FAFIHMBS Paired Feature Activators-Feature Indicators Per Hunt Make Busy Application Set FAFISHS Paired Feature Activators-Feature Indicators Per Stop Hunt Applica tion Set FAHMBS Feature Activators Per Hunt Make Busy Application Set FAI Facility Information Message FAIGEN FAFI Generic Dialog FAIM Frameworks with Architectural Implementations FAIPOC FAFI Programming Outside the Context of a Call FAIRSS FAFI Recognition and Starter Service FAISUP FAFI Status Update FAL Frame Alignment Loss FAM Fast Access Memory FAM File Access Method FAM Final Address Message FAM Forward Address Message FAM The Family Channel FAMAE Facility Agent MAE FAME Fast Multiphase Excitation (Nuclear Magnetic Resonance) FAMOS Floating-Gate Avalanche Metal Oxide Semiconductor FAMOS Floating-gate Avalanche MetalOxide Semiconductor FAN Flexible Access Network FANI Flexible Automatic Number Identification FANP Flow Attribute Notification Protocol FANS Future Air Navigation System FAOZ Fernmeldeamt-Ordnungszahl (Identification of Telecommunications Ex change) FAP Feature Alteration Point FAP Feature Appearance FAP Format and Protocol FAQ Frequently Asked Questions FAR Facility Request Message FAR False Alarm Rate FAR Fixed Alternative Routing FAR Flash during Audible Ringing Utility FARnet Federation of American Research Networks FARS Federal Acquisition Regulations FAS Facility Associated Signaling FAS File Access Subsystem FAS Frame Alignment Signal FAS Frame Alignment Symbol FASHS Feature Activators Per Stop Hunt Application Set FASIC Function- and Algorithm-Specific Integrated Circuit FAST Fairchild Advanced Schottky TTL FAST Family-oriented Abstraction, Specification, and Translation FAST Federation Against Software Theft (UK) FAST First Application System Test FAST Forecasting and Assessment in Science and Technology FAST Frequency Agile Sharing Technology FASTAR Fast Automatic Restoration FASTPLA FAST Programmable Logic Array (Fairchild Semicond.Inc) FAT File Allocation Table FAT File Allocation Table (DOS) FAT Final Acceptance Testing FAT Foreign Area Toll FAT Foreign Area Translation FAT Foreign Area Translator FAT Framework Architecture Team FAW Frame Alignment Word FAX Facsimile Fax Facsimile FAXoIP Facsimile over Internet Protocol FAZAM Full Armor Zero Administration FB FrameBuilder FB Frequency correction Burst FB Frequency Correction Burst FB Fuse Block FBA Call Forward Busy Allowed FBA Fair Buffer Allocation FBAS Farbart, Bildinhalt, Austast, Synchron(-Signal) FBC Facilities-Based Carrier FBC Facility Bearer Channel F-BCCH Fast Broadcast Control Channel FBD Call Forward Busy Denied FBD Full Business Day FBD Functional Block Diagram FBE Frame Bonding Equaliser FBG Foreign Battery or Ground FBPSM Fixed Block Pool Store Manager FBR F-Bus Terminator/Repeater FBS Flexible Bandwidth Service FBSM File Based Service Management FBSOA Forward Biased Safe Operating Area (Power Semiconductors) FBSS Full Band Spread Spectrum FBT Fused Biconic Taper FBus Frame Bus Fbus Frame Bus FBUS Frame Transport Bus F-BUS Frame Transport Bus FC Facility Code FC Facility Component FC Fast Channel FC Fast Class FC Feature Close FC Feature Control FC Feedback Control FC Fibre Channel FC Final Compile FC First Call FC Flex Call FC Flexible Calling FC Flow Control FC Frame Control FC Frame Count FC Function Code FC Functional Call FC Functional Capability FC Functional Component FC Functional Configuration FC3 Flexible Call 3 FC4 Failure Condition FCA Feature Code Access FCA Fibre Channel Association FCA Fixed Channel Allocation FCA Fixed Channel Assignment FCAPS Fault, Configuration, Accounting, Performance, Security Management FCB Feature Control Block FCB File Control Block FCB Flexible Calling Billing Records FCB Frequency Coordination Board FCC Federal Communications Commission (US) FCC File Carbon Copy FCC Flexible Call Conference FCC Flow Control Consortium FCC Framework Capabilities Capture FCCH Flexible Calling Consultation Hold FCCH Frequency Correction CHannel FCCH Frequency Correction Channel FCCSET Federal Coordinating Committee for Science, Engineering, and Techn ology FCD Facsimile Coded Data FCD Flexible Call Drop FCD Public Feature Code Trigger FCDB Feature Control Data Base FCE Front End Control Element FCEL Fixed Cellular FCF Facsimile Control Field FCF Fast Control Field FCF Flexible Call Forwarding FCFA Public Feature Code Trigger and BRI Feature Activator Indicator Tr igger FCFS First-Come First-Served FCG False Cross or Ground FCHD Flexible Calling and ISDN Hold Display FCHS FP Change Sign (80x86 inst) FCI Flexible Calling Feature Interactions fci Flux Changes Per Inch FCI Forward Call Indicator FCI Forward Call Indicators FCI Forward Congestion Indication FCIF Flexible Computer Interface Format FCIFI Flexible Calling Invoke from Idle FCIP Forward Call Indication Parameter FCL Fibre Channel Loop FCL Fixed Channel List FCM Fabric Control Message FCM Functional Call Management FCM Signaling Traffic Flow Control Messages FCMP Functional Component Management Plan FCO FiberCenter OM Acquisition FCO Field Change Order FCOT Fiber Central Office Terminal FCP Ferry Control Protocol FCP Fibre Channel Protocol FC-PH Fibre Channel Physical and Signaling Interface FCPN Flow Control Parameter Negotiation FCR Function Code Register FCS Facsimile Communications System FCS Fast Circuit Switching FCS Federation of Communications Services (UK) FCS Fibre Channel Standard FCS File Control Services FCS First Customer Shipped FCS Flexible Charging System FCS Frame Check Sequence (HDLC, LAPB) FCST Forecast FCT Field-Controlled Thyristor (GTO-Thyristor) FCT Flexible Call Transfer FCTS Ferry Clip Based Test System FCU Floating-Point Conversion Unit FCVC Flow Controlled Virtual Channel FCX Flexible Calling Transfer FD FACT Done FD Family of Documents FD Fault Detection FD Fault Display FD Feature Description FD File Descriptor FD File Directory FD Finished Dialing FD Floppy Disk FD Formal Description FD Format Discriminator FD Frequency Division FD Full Duplex FD Functional Description FD&R Fault Detection and Recovery FD/PSK Frequency-Differential/Phase Shift Keyed FDA Feature Data Area FDA Food and Drug Administration FDB Feature Data Block FDB Feature Database FDB Functional Description Block FDBQ Feature Data Block Queue FDC First Data Corporation FDC Floppy-Disk Controller FDCT Forward Discrete Cosine Transform FDD Fault Detection Driver FDD Floppy Disk Drive FDD Frequency Division Duplex FDD Frequency Division Duplexing FDDI Fiber Distributed Data Interconnect FDDI Fiber Distributed Data Interface FDDI Fibre (Optic) Distributed Data Interface FDDI Fibre-Distributed Data Interface FDDI/DAX Fibre Distributed Data Interface Dual Attach FDDI-II FDDI II FDDSF Field Direction-Delay-Spread Function FDE Facility Deactivated message FDE Feature Designer Environment FDE Feature Development Environment FDE Frame Development Environment FDE Frequency-Domain Equalization FDE Full Duplex Ethernet FDER Field Data Entry Rules (CCA/VTS) FDF (Optical) Fibre Distribution Frame FDF Fiber Distributing Frame FDF Fiber Distribution Frame FDH Full-Duplex Handshake FDHP Full-Duplex Handshaking Protocol FDI Feeder Distribution Interface FDI Fiber Distribution Interface FDI Functional Description Inspection FDIS Final Draft International Standard FDK Frame Developer's Kit FDL Facility Data Link FDLC FDL Control Register FDM Feature Description Manual FDM Frequency Division Multiplex FDM Frequency Division Multiplexed FDM Frequency Division Multiplexing FDMA Frequency Division Multiple Access FDN Features Denied FDN Fiber Distribution Network FDN Fixed Dialing Number FDN Foreign Directory Name FDN Forward-to Directory Number FDNR Frequency-Dependent Negative Resistor FDNZ First Digit Not Zero FDOC Feature Document FDOC Focused Destination Overload Control FDOS Floppy-Disk Operated System FDPC Font Development and Promotion Center FDPLL Fully-Digital Phase-Locked Loop FDR Frequency Dependent Rejection FDS Fundamental Data Structure FDT File Descriptor Table FDT Formal Description Technique FDT Formal Design Technique FDT Framework Design Team FDT Framework Development Team FDT Full Digitone FDTD Finite Difference Time-Domain FDTS Formal Description Techniques FDU Floppy Disk Unit FDX Full Duplex FDX Full DupleX operation FE Family of Equipment FE Far End FE Finite Element FE Format Effector FE Frame Erasure FE Framing Error FE Function Element FE Functional Element FE Functional Entity FE FunkEntstörung (ÖVE: FA-FE) Fe Nominal Channel Centre Frequency FEA Finite Element Analysis FEA Functional Entity Action FEAC Far End Alarm Channel FEAC Far-End Alarm and Control FeAfD Fetnsprechauftragsdienst (Call Forward to Message-Taking Service) FEAL Fast Encipherment Algorithm FEAM Format Effector Action Mode FEAM Functional Entity Access Manager FEAT Feature FEATSIM Feature Simulation FEATSIM Feature Simulator FEBE Far End Block Error FEC Forward Error Correction FEC Forwarding Equivalence Class FEC Forwarding Equivalency Class FECG Foetal Electro Cardio Gram FECN Forward Explicit Congestion Notification FECV Far-End Code Violation FED Field Emission Display FED Field-Emitter Display FED STD FEDeral government STanDard (USA) FEDIX Federal Information Exchange FEFA Far End Failure FeHAs Fernsprechhauptanschluss (Telephone Main Terminal) FEI Frame Erasure Indication FELB Far-End Loopback FELP Far-End Loop Test FEM Finite Element Methode FEMF Foreign Electromotive Force FEN Forsythe-Edwards Notation FEOFF Far-End Office FEP Fluorinated Ethylene Propylene ("Teflon" Fluorocarbon Resin) FEP Front End Processor FEP Front-End Processor FEPC Far End Point Code FEPO Far End Processor Outage FEPS Facility and Equipment Planning System FEPS Fault Event Processing System FER Frame Erasure Rate FER Frame Erasure Ratio FER Frame Error Rate FeRAM Ferroelectric RAM FERETS Foreign Exchange Routine Evaluation Testing System FERF Far End Receive Failure FERF Far End Reporting Failure FERF Far-end Receive Failure Message FES Fixed Earth Station FES Frequency Encoding Signal FES Frequency Exchange Signalling F-ES Fixed End System FESA Forced Emergency Stand Alone FESS Flywheel Energy Storage System FET Field Engineering Terminal FET Field-Effect Transistor FET Field-Effect Transistor fet Functionally Equivalent To FETM Format Effector Transfer Mode FEU Floating-Point Execution Unit FEV Far End Voice FEV Feature Event FeV Fernsprechvermittlungsbetrieb (Telephone Switching Office) FEX Foreign Exchange FEXT Far-End Crosstalk FF Fast Feature FF Fast Forward FF Field Function FF First-Fit FF Fixed Filter FF Flip-Flop ff Following FF Form-Feed (ASCII Character) FF&P Features, Functions, and Performance FFAPI File Format Applications Programming Interface FFC Free Format Coding FFDT FDDI Full-Duplex Technology FFH Fast Frequency Hopping FFII Future Forum II FFM First Failure to Match FFM Functional Feature Management FFOL FDDI Follow-On LAN FFP Features, Functions & Performance FFQ Fluid-Flow Queuing FFRB Field Failure Review Board FFRDC Federally Funded R&D Center FFRN Four-Fiber Ring Node FFS Fast File System FFS For Further Study FFSK Fast Frequency-Shift Keying FFT Fast Fourier Transform FG Feature Group FG ForeGround FG Frame Ground FG Framework Ground FG Functional Group FGA Feature Group A FG-A Feature Group A FGASO Feature Group A Serving Office FGB Feature Group B FG-B Feature Group B FGBA Feature Group B Area FGBEO1 Feature Group B End Office Type 1 FGBEO2 Feature Group B End Office Type 2 FGBEO3 Feature Group B End Office Type 3 FGBT Feature Group B Tandem Switch FGC Feature Group C FG-C Feature Group C FGCS Fifth Generation Computer System FGD Feature Group D FG-D Feature Group D FGE Feature Group E FG-E Feature Group E FGF Feature Group F FG-F Feature Group F FGL Forth Generation (Programming) Language FGND Frame Ground FGR Frame Ground Reference FGW Floor Ground Window FH Fixed Host FH Frame Handler FH Frame Handler function FH Frequency Hopping FH/SS Frequency Hopping Spread Spectrum FHD Fixed Head Disk FHNR Fixed Nonhierarchical Routing FHR Fixed Hierarchical Routing FHSS Frequency Hopping Spread Spectrum FI Fabric Interface FI Fabric Interface FI Facility Information FI FACT Identified FI Fault Insertion FI Feature Indication FI Feature Indication Information Element FI Feature Indicator(s) FI Feature Interaction FI Format Identifier FI Format Indicator FI Function Index fi Internet country code for Finland FI ISO country code for Republic of Finland FIAT Functional Interactive Asynchronous Transaction FIB Fast Input Buffering FIB Forward Indicator Bit FIB Forwarding Information Base FIBO Front-In Back-Out FIBR Forward Indicator Bit Received FIBT Forward Indicator Bit Transmitted FIBX Forward Indicator Bit Expected FIC FBus Interface Controller FIC F-Bus Interface Controller FIC Flight Information Centre FID Feature Identifier FID Feature Interaction Detection FID Federation International de Documentation FID Field Identifier FID File Identifier FID Fixed station IDentity FID Format IDentification (SNA) FID Format Identifier FID Frame Identification FIDB Feature Information DataBase FIDDI FIbre Distributed Data Interface FIDN Feature Indicators Per DNCT FIE Facility Information Element FIEE Fellow of Institution of Electrical Engineers (UK) FIEEE Fellow of Institute of Electrical and Electronics Engineers, Inc. (US) FIEIE Fellow of Institution of Electronics and Electrical Incorporated E ngineers (UK) FIF Facsimile Information Field FIF Fractal Image Format FIFO First In, First Out (Memory) FIFO First-In, First-Out FIG Flash Ignore FIG Floating Figure (HTML tag) FIGS FIle Separator FIHMBS Feature Indicators Per Hunt Make Busy Application Set FIL Feature Indication Lamp FILO First-In, Last-Out FILR Feature Indication Lamp Refresh FIM Facing Identification Mark FIM Feature Interaction Management FIM Feature Interaction Manager FIM Fiber Interface Module FIM-A Facing Identification Mark: Courtesy Reply Mark FIM-C Facing Identification Mark: Business Reply Mark FIMWN Feature Indication Message Waiting Notification FIN Facility Information message FIN Feature ID Number FIN Finish flag FIP Fetch Instruction Pointer FIP Flourescent Indicator Panel FIP Functional Integration Point FIPA Federation for Intelligent Physical Agents FIPS Federal Information Processing Standard (USA) FIR Fast Infrared FIR Fault Indication Register FIR Finite Impulse Response (filter) FIR Full Intra Request FIR Full Intra-frame Request FIRD Feature Interaction Rule Distribution FIRGG Feature Interaction Rule/Guidelines Generation FIRST Forum of Incident Response Teams FIS Floating Instruction Set FIS Functional Interface Specification FISHS Feature Indicators Per Stop Hunt Application Set FISU Fill-In Signal Unit FIT Failure In Time FIT Failure Intensity Trend FIT Failures in 10+9 component hours FIT Fault Insertion Testing FIT Focused Improvement Team FIT Framework Integration Team FIT Fully Initializing Terminal FIT Fully-Initializing Terminal FIT Function Integrity Test FIT Functional Integration Testing FITCE Federation of the Telecommunication Engineers of the EC(F) FITE Forward Interworking Telephone Event FITL Fiber In The Loop FITS Flexible Image Transport System FITS Functional Interpolating Transformation System FIU Facilities Interface Unit FIU Facsimile Interface Unit FIU Fingerprint Identification Unit FIU Florida International University FIX Federal Internet Exchange FJ ISO country code for Fiji FK Foreign Key FK ISO country code for Falkland Islands (Malvinas) FKM Feature Key Management FKP MDII: Address Signaling Error- False Key Pulse FKTO Fernmeldekontonummer (Telecommunications Account Number) FL Failure FL Fault-Locate FL Feature List FL Flash FL Foreign Listing FL Fully-Restricted Line FL U.S. postal code for Florida FLAG Fiberoptic Link Around the Globe FLARE Fault Location and Alarm Reporting FLC Ferroelectric Liquid Crystal FLC Fiber Loop Carrier FLC Fixed Length Code FlCA Flexible Channel Allocation FLCC Functional Line Card Code FLCS Fibreoptic Low-cost Connector System (Motorola Inc.) FL-CU Fiber Loop Central Unit FLD FieLD FL-DU Fiber Loop Distribution Unit FLEN Frame LENgth FLEX FlexCall FLEX DID Flexible Direct Inward Dialing FLEXI Flexible Intercept FL-I ISDN Fully Restricted Line FLIC Fiber Link Interface Chip FLIC Fiber Link Interface Controller FLIH First Level Interrupt Handler FLINK Flash/Wink FLIR Forward-Looking Infra-Red (Military Avionics) FLIS Fiber Link Interface Shelf FLIS Fiberized Link Interface Shelf FLL Frequency-Locked Loop FL-LA Fiber Loop Line Amplifier FLO Fixed Link Option flo Fixed Link Option FLO Fully-Restricted Originating Line FLOC Flexure Lift-Off Contact (Relays) FLO-I ISDN Fully-Restricted Originating Line FLOP Floating Point Operation FLOPS Floating Point Operations Per Second FLORICO Florida-Puerto Rico submarine cable FLOW Flow Through Provisioning FLRN Foreign Location Routing Number FLS Flash Utility FLS Free Line Signal FLS Free Terminating Line Service FLT Fault FLT Float Voltage FLT Fully-Restricted Terminating Line FLT-I ISDN Fully-Restricted Terminating Line FLX Fiber Loop Access FM Fabric Management FM Facility Monitoring FM Failure to Match FM Fault Management FM Fault Monitor FM Feature Manager FM Focused Maintenance FM Force Management FM ForM FM Frame Memory FM FrameMaker FM Frequency Management (CEPT) FM Frequency Modulation FM Function Management (SNA) FM ISO country code for Federated States of Micronesia FM SLP Feature Management Service Logic Program FMA Failure Mode Analysis FMA Fast Matrix Architecture FMA First Market Application FMA FRAMES Multiple Access FMA Fused Multiply-Add FMAC Facility Maintenance and Administration Center FMAC Floating-Point Multiply-and-Accumulate FMAS Facility Management System FMB Fabric Motherboard FMB Functional Message Block FMBS Frame-Mode Bearer Services FMC Fixed Message Cycle FMC Fixed/Mobile Convergence FMC Flight Management Computer FMC Force Management Center FMCRT Force Management CRT FMCT Formal Methods in Conformance Testing FMCW Frequency Modulated Continuous Wave FMD Follow-Me Diversion FMD Function Management Data FMEA Failure Mode and Effect Analysis FMEA Fault Modes and Effects Analysis FMECA Fault Modes, Effects and Criticality Analysis FMFB Frequency Modulation Feedback FM-FDM Frequency Modulated-Frequency Division Multiplexed FMH Function Management Header FMHS Flexible Material-Handling System FMID Fixed part MAC Identity FMIF Frame Mode Information Field FMIP FMI Protocol FMK Functional Multiprocessing Kernel FMM Finite Message Machine FMO Future Method of Operation FMP Feature Message Processor FMP Functional Multiprocessing FMR Field Management Reporting FMR Follow Me Roaming FMR Frequency Modulation Receiver FMS Fleet Management Service FMS Flexible Manufacturing System FMS Flight Management System FMS Force Management System FMS Forms Management System FMSA Fault Management Switch Agent FMSLP Feature Manager Service Logic Program FMSM Fault Management Summarization Manager FMT Fiber Multiplex Terminal FMT Format Fmt Format FMT Frequency Modulation Transmitter FMTV Frequency Modulated TeleVision FMU Fan Management Unit FMU Fan Mount Unit FMV Foreign Market Value FMVFT Frequency Modulation Voice Frequency Telegraphy FN DDOC Section: Functional Description and Specification FN Facility Number FN Feature Node FN Finding Name FN FiNish FN Forwarding Number FN Frame Number fn Function FN Functional Description FN Functional Specification FN Functionality FNA Call Forward No Answer Allowed FNA FLAG Network Architecture FNA Functional Network Architecture FNAL Feature Not Allowed Treatment FNAMEPRV Forced Name Privacy FNB Function Block FNC Federal Networking Council FNC FTS Node Controller FNC Fujitsu Network Communications FND Call Forward No Answer Denied FNLTREAT Final Treatment FNN Financial News Network FNO Free Number Origination FNOC FLAG Network Operations Center FNOI Further Notice of Inquiry FNP Front-End Network Processor FNPA Foreign Numbering Plan Area FNPRM Further Notice of Proposed Rule Making FNS Fixed Night Service FNS Fujitsu Network Switching FNSI Feature Node/Service Interface FNT Font Selection FNT Free Number Terminating FNU Floatingt-Point Normalization Unit FNV Future Network View FNX Extended Function Block FO Fan-Out FO Fiber Optic FO Fixed Output FO Flash Override FO Follow-On FO ISO country code for Faroe Islands FOA First Office Application FOA Flexible (Call) Origination Authorization FOAC Fibre Optic Active Component FOBP Fibre Optic Back Pointer FOBS Flexible Call Observing FOC Faint Object Camera FOC Fiber Optic Crossconnect FOC Fiber Optics Communications FOC Firm Order Confirmation FOC Flow of Control FOC Follow-On Call FOCC Forward Control Channel FOCS Fiber Optic Communication Systems FODA Feature Oriented Domain Analysis FOF Freeze-Out Fraction FOIRL Fiber Optic Inter-Repeater Link FOM Factor of Merit FOM Figure of Merit FOMAS Fiber Optic Multi-Media Access System FOMAU Fiber Optic Medium Attachment Unit FOMDI Fiber Optic Medium Dependent Interface FON Font file FOOBAR FTP Operation Over Big Address Records FOOS Force Out Of Service FOOT Framework for Object Oriented Testing FOR FS FOR Further Study FORM Formatter FORTE FORmal TEchniques FORTRAN FORmula TRANslation (programing language) FORTRAN Formula Translator FOS Fiber Organizing System FOSI Format Output Specification Instance FOT Fiber Optic Terminal FOT Fiber Optic Transmission FOT Forward-Transfer Message FOT Forward-Transfer signal FOT Frequence Optimale de Travail FOTAG Fiber Optic Technical Advisory Group (IEEE) FOTP Fiber Optic Test Procedure FOTS Fiber Optic Terminal System FOTS Fiber Optic Transmission System FOURCC Four-Character Code FOV Field Of View FOX Fiber Optic Extender FOX Field Oxide Fox Fox Network FP Fabry-Perot FP Facilities Processor FP Facility Processor FP Fast Paging FP Feature Processing FP Feature Processor FP Field Patch FP File Pointer FP File Processing FP File Processor FP Fixed Part FP Flat Pack FP Flat Package FP Floating Point FP Format Prefix FP Frame Pointer FP Freephone FP Full Period FP Function Processor FP Functional Processor FP Functional Programming FPA Floating Point Accelerator FPAD Facsimile Packet Assembly/Disassembly FPAM Fabric Power and Alarm Module FPC Fan Power Control FPC Foundation Peripheral Controller FPC Functional Progression Chart FPCP Floating Point Co-Processor FPCR Floating-Point Control Register FPD File Processor Device FPD Foreign Potential Detector FPDP Front Panel Data Port FPDU FTAM Protocol Data Unit FPE Feature Processing Environment FPECR Floating-Point Exception Cause Register FPEE Floating-Point Exception Envelope FPF Facility Parameter Field FPF Feature Processing Framework FPG Feature Planning Guide FPG Functional Parameter Group FPGA Field-Programmable Gate Array FPH Free PHone (supplementary service) FPHi Freephone Indicators FPHS1 Floating-Point Source 1 Operand High Register FPHS2 Floating-Point Source 2 Operand High Register FPI Family Programming Interface FPIAR Floating-Point Instruction Address Register FPIT Floating-Point Imprecise Operation Type Register FPLA Field Programmable Logic Array FPLD Field Programmable Logic Device FPLF Field Programmable Logic Family FPLMTS Future Public Land Mobile Telecommunication System(s) FPLMTS Future Public Land Mobile Telecommunications Services FPLS Future Public Logic System/Sequencer FPLS1 Floating-Point Source 1 Operand Low Register FPLS2 Floating-Point Source 2 Operand Low Register FPM Fast Packet Multiplexing FPM Fast Page Mode FPM Feet Per Minute FPM Fiber Peripheral Module FPMH Failures Per Million Hours FPN Freephone Number FPO Frame Pointer Optimization FPO Frequency Planning Organisation FPOM Feature Processing Off-Site Meeting FPOM FPE Offsite Meeting FPP Floating Point Processor FPPT Floating-Point Precise Operation Type Register FPR Floating-Point Register FPRH Floating-Point Result High Register FPRL Floating-Point Result Low Register FPRT DMS-Core Footprint FPS Fast Packet Switching FPS Favorite Picture Selection FPS Feature Plan Specification FPS Foot,Pound,Second (system of measurement) fps Frames Per Second FPS Framing Pattern Sequence FPS/FE Framing Pulse Synchronization-Framing Extended FPSCR Floating-Point Status and Control Register FPSP Floating Point Support Package FPSR Floating-Point Status Register FPT Forced Perfect FPU Floating Point Unit FPV Field Product Validation FPV Floating Point Value FPY Failures Per Year FQ Fair Queuing FQDN Fully Qualified Domain Name FR Failure Rate FR Family of Requirements FR Feature Reviewed FR Fixed Routing FR Flashing Recall FR Flat Rate FR FN Release FR Force Release FR FRagment FR Frame FR Frame Relay FR Frame Relaying FR Frame Relaying technique FR Frame Reset FR Frames FR Frequency Response FR Full Rate FR Fully-Restricted Line FR Functional Specification Reviewed FR Functionality Review fr Internet country code for France FR ISO country code for French Republic (France) F-R Final Operators to Required Operators FR&O First Report and Order FR_SS Frame Relay Switching System FRA Fixed Radio Access FRA Flat Rate Area FRAD Frame Relay Access Device FRAD Frame Relay Assembler/Disassembler FRAD Frame Relay Assembler/Disassembler Device FRAM Ferroelectric RAM FRAM Ferroelectronic Random Access Memory FRAMES Future Radio Wideband Multiple Access Systems FRAP Frame Relay Access Processor FRAR FBUS Rate Adapter and Repeater FRB Faultsman's Ringback FRBBS Frame Relay Backbone Service FRBS Frame Relay Bearer Service FRC Fault Reporting Center FRC Final Routing Center FRC Functional Redundancy-Checking FRC Functional Reference Configuration FRCD Forced FRDS Failure Resistant Disk System FRDS+ Failure Resistant Disk System Plus FRE Fully Restricted FRED Frame Editor FREDFET Fast-Reverse Epitaxal Diode Field-Effect Transistor (Philips Inc) FREL Feature Release FREL Forecast Release FREQ Frequency FRF Frame Relay Forum FRFH Frame Relay Frame Handler FRI Frame Relay Interface FRI Frame Relaying Information FRIED Friedrichschaffen FRIU Frame Relay Interface Unit FRJ Facility Reject Message FRL Facility Restriction Level FRL Force Release message FRL Frame Representation Language FRL Frequently Requested Listing FRLS Force Release FRM Fast Resource Management FRM Forward Resource Management frm FrameMaker File FRM Functional Reference Model FRMR Frame Reject FRN File Reference Number frn File Reference Number FRN Fragmentation Reference Number FRNO Frame Number FRO Fire Reporting System Originating FRO Fire Reporting System Origination frO frame O FROM Fusable (Link) Read-Only Memory FRP Fast Reservation Protocol FRP Fault Report Point FRP Final Redirecting Party FRPH Frame-Relay Protocol Handler frpi Flux Reversals Per Inch FRPOS Frame Position FRPS Frame position FRQ Facility Request message FRR Flexible Reroute FRR Frame Retransmission Rate FRS FRS Fire Reporting System FRS Flexible Route Selection FRS Forward Ready Signal FRS Frame Relay Service FRS Frame Relay Switch FRS Fully Restricted Station FRSC Fiber Remote Switching Center FRSF Frame Relay Service Function FRSS Frame Relay Switching System FR-SSCS Frame Relaying Service-Specific Convergence Sublayer FRT Fire Reporting System Terminating FRT Fire Reporting System Termination FRTE Frame Relay Terminating Equipment FRTT Fixed Round-Trip Time FRU Field Replacement Unit FRU Field-Replaceable Unit FRU Flexible Reuse FRWK Framework FS F Segment FS FACT Started FS Failed Screening FS Failed Seconds FS Fast Select FS Fast Store FS Feature Specification FS Federal Standard FS Field Separator FS Field Support FS Figure Shift FS File Separator FS File System FS Fixed Service FS Fixed Subscriber FS For Sale FS Frame Signaling FS Frame Status FS Frame Switching FS Frequency Shift FS Full Scale FS Full Screen FS Function Selector FS Functional Signaling FS Functional Specification FS Functional Standard FS Further Study F-S Fiat-Shamir FSA Fast Select Acceptance FSA Fiber Serving Area FSA Finite State Automata FSA Formatter/Storage Agent FSAN Full Services Access Network FSB Feature State Block FSB Functional Signaling Block FSB Functional Specification Block FSC Far-end Signal Canceller FSC Frame Supervisory Controller FSC Freephone Service Centre FSC FTS Subnetwork Controller FSD Feature Specification Document FSD Feature-Specific Document FSD File System Driver FSD Frame Selection and Distribution FSD Functional Specification Document FSDB Feature Store Data Base FSDR Feature Specification Document Review FSE Field Service Engineering FSF Fading Safety Factor FSF Free Software Foundation FSG Finite State Grammar FSG Full Steering Group FSI Facility Subsystem Identifier FSI Forward Status Indicators FSI Forward Status Information FSI Frequency Subset Indicator FSK Frequency-Shift Keying FSL File System Layout FSL Flexible Service Logic FSLE Fractionally Spaced Linear Equalizer FSLP Feature Service Logic Program FSM Finite State Machine FSM Finite State Model FSM Firmware Support Manual FSM Fixed Block Pool Store Manager FSM Forward Set-Up Message FSM Free Space Map FSM Function State Model FSN Field Specification Notation FSN File Sequence Number FSN Fixed System Number FSN Forward Sequence Number FSN Frequency Subset Number FSN Full Service Network FSNC FSN of Last Signal Unit Accepted by Remote Level 2 FSNF FSN of Oldest MSU in the Retransmission Buffer FSNL FSN of Last MSU entered into the Retransmission Buffer FSNR Forward Sequence Number Received FSNT Forward Sequence Number Transmitted FSNX Forward Sequence Number Expected FSO Foreign Service Office FSO Formatting, Storage, and Output FSP Facility Services Profile FSP Flexible Service Profile FSP Frame Supervision Panel FSP Frame Supervisory Panel FSP Frequency Shift Pulsing FSQ Flat SQuare screen (CRT) FSR Free System Resources FSR Frequency Selective Ringing FSR Frequency Shift Ratio FSR Frequency Spectrum Requirement FSR Full-Scale Range FSS Facility Selective Service FSS Facility/Service Selective FSS Fair Share Scheduler FSS File System Switch FSS Fixed Satellite Service FSS Frame Support Subscription FSS Frame Synchronous Scrambling FSSS Facility/Service Selective Signaling FST Fiber Services Terminal FST Flat Square Tube FST Flexible Signaling Trunk FST Force State Transition FST Four-Square Transform FST FP Store Real (80x86 inst) FST Full Service Terminal FSTN Film Super-Twisted Nematic FSTYPE Fast Select Type FSU Fabric Sub-Unit FSU Field Support Unit FSU Final Signal Unit FSU Frame Supervisory Unit FSW Frame Synchronisation Word FSXF Frequency Synchronisation Failure FT FACT Tested FT Fault Tolerant FT Feature Test FT Feature Tested FT FeeT FT Fiber Transmission FT Fibre optics Transmission standards FT File Transfer FT First Time FT Fixed radio Termination (DECT) ft Foot (Feet) FT Format Type bit FT Forward Transfer FT Fractal Transform FT Fractional-Tap FT Frame Transfer (Video) FT France TELECOM FT Functional Test Ft Transit Frequency FT1 Fractional T1 FT-1 Fractional T1 FT3 Fractional T3 FT-3 Fractional T3 FTA Fault Tree Analysis FTA Feature Activation FTA File-Transfer Access FTA Flexible (Call) Terination Authorization FTA Frame Transport Address FTA Free Trade Association FTA Full Type Approval FTAC FAST Technical Advisory Council FTAM File Transfer Access and Management FTAM File Transfer and Access Management FTAM File Transfer and Management FTAM File Transfer, Access, and Management FTAM Forms Translation and Mapping FTC Fast Time Constant FTC Functional Test Case FTD Field Type Descriptor FTD Foreign Exchange Toll Diversion FTD Frame Transfer Delay FTDS Failure Tolerant Disk System FTDS+ Failure Tolerant Disk System Plus FTDS++ Failure Tolerant Disk System Plus Plus FTE Force Transition Event FTE Full-Time Equivalent FTFE Force Transition Failure Event FTFS Fault Tolerant File System FTI Feature Indication FTI Feature Testplan Inspection FTL Function-Tester (Programming) Language FTM Feature Testing Methodology FTM Flat Tension Mask FTM Frequency Translation Module FTMI France Telecom Mobiles International FTMP Ferry Transfer Medium Protocol ftn Forwarded-To Number FTNS Fixed Telecommunications Network Service FTO Fast Turn-Off FTP File Transfer Program FTP File Transfer Protocol (Internet) FTP Foiled FT-PNNI ForeThought PNNI FTR Feature FTR Feature Tone Receiver FTRAN File Transfer FTRGRP Feature Group FTRKEYS Feature Keys FTRQ Feature Queuing FTS FAX-Thru Service FTS Federal Telecommunications System FTS Feeder Transmission Section FTS File Transfer Server FTS File Transfer Service FTS File Transfer System FTS Frame Transport System FTS Full-Text Search FTSC Federal Telecom Standard Committee (USA, NCS) FTSC Federal Telecommunications Standards Committee FTSP Final Translation Signalling Point FTT Failure To Train FTTB Fiber To The Building FTTC Fiber To The Curb FTTCa Fiber to the Cabinet FTTCab Fiber to the Cabinet FTTEx Fiber to the Extension FTTF Fiber To The Feeder FTTF Fiber To The Floor FTTH Fiber To The Home FTTK Fiber to the Kerb FTTLA Fiber To The Last Amplifier FTTN Fiber To The Neighborhood FTTN Fiber To The Node FTTO Fiber To The Office FTTU Fiber To The User FTTZ Fiber To The Zone FTU File Transfer Utility FTV Facility Test Vehicle FTZ Fernmeldetechnisches Zentralamt FTZ Fernmeldetechnisches Zentralamt (D) FTZ Forschungs- und Technologie Zentrum der DTAG (Research and Technology Center of DTAG) FU Fan Unit FU Functional Unit FUC Feature Use Charging FUD Fear, Uncertainty, and Doubt FUD Functional Unit Deployment FUL Full Backup Catalog File FUMP Functional Message Protocol FUN Frame User Network FUN The Frye Utilities for Networks FuND Subscriber from the FUNDES Functional Design System FUNI Frame Based User-to-Network Interface FVC First Virtual Corporation FVC Floating Virtual Connection FVC Forward Voice Channel FVC Frequency to Voltage Converter FVDA Fully Variable Demand Access FVR Flexible Vocabulary Recognition FVSIR Flexible Vocabulary Speaker-Independent Recognition FVSt Fernvermittlungsstelle (trunk exchange/transit switch in long distance network) FVstH Manually Switched Trunk Exchange FVstHand Manually Switched Trunk Exchange FVW Forward Volume Wave FW FiberWorld FW Firmware FW Frame Word FW Framework FW Full Word FWA Access FWA Flow and Wavelength Assignment FWCI Firmware Command Interpreter FWD Forward FWF First-Window Fibre (850 nm) FWH Flexible Working Hours FWHM Full-Width Half-Maximum FWIW For what it's worth FWK Framework FWM Four-Wave Mixing FWM Four-Wave Multiplexing FwMunz Fernwahlmuenztelefon (Trunk Dialing Prepayment Telephone) FWP FiberWorld Products FWP Finer World Process FWPC Future Wireless Personal Communications FWPCS Future Wireless Personal Communications System FWS Filter Wedge Spectrometer fwsvc Firmware Service FWUF Federal Wireless Users Forum FX Effects FX Foreign Exchange FX Foreign Exchange Service FX ISO country code for Metropolitan France FX2WAY Foreig Exchange 2-Way Traffic FXB Foreign Exchange with Battery FXBO Foreign Exchange with Battery Office End FXBS Foreign Exchange with Battery Station End FXC Fiber Crossconnect FX-CCSA Foreign Exchange-Common Control Switching Arrangement FXCG Flexible Night Service Configuration FXCH Floating-Point Exchange FXDN Fixed Directory Number FXIN Foreign Exchange Inward Traffic FXNS Flexible Night Service FXO Foreign Exchange Office FXOUT Foreign Exchange Outward Traffic FXP Feature Transfer Processor FXPM Fiber XPM FXR Fast Call Transfer FXRD Fully Automatic Reperforator Transmitter Distributor FXS Foreign Exchange Service FXS Foreign Exchange Subscriber FXU Fixed-Point Unit FY Fiscal Year FYA For your amusement FYI For Your Information FZA Fernmeldetechnisches Zentralamt (A) back to top|0-9|A|B|C|D|E|F - G - H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

G Gain g Gehende (Outgoing) G Giga (10+9) G Giga (1000000000 or 1024*1024*1024) G Granularity G Gravitational Force G Gravity G Green G Ground G Group G Guard G Guard time G/T Gain to noise-Temperature ratio g++ GNU C++ Compiler G0 Gate 0 G0A Gate 0A G0B Gate 0B G1 Gate 1 G2 Gate 2 G3 Gate 3 G3 Group 3 G4 Group 4 GA Gemeinschafts-Antennenanlage GA General Assembly (ETSI) GA General Availability GA General Aviation GA Generally Available GA Generator/Analyzer GA Genetic Algorithm GA Geographical Area GA Go Ahead GA Grand Alliance GA Group Alerting GA ISO country code for Gabonese Republic (Gabon) GA U.S. postal code for Georgia GAAF GSF Applications Architecture Forum GaAs Gallium Arsenide GAC GSF Architecture Council GAdC Group AdC GAGR Group Automatic Gain Regulator GAIN Global Advanced Intelligent Network GAL Generic Array Logic (Lattice Inc.) GAM Graphic Access Method GAME Generic AIN Message Encoder GAME Generic AIN Messaging Environment GaN Gallium Nitride GAN Global Area Network GAO General Accounting Office GAO Group Answer Occasional GAOT GSF Agent Object Team GAP Call Gapping GAP Generic Access Profile (DECT term) GAP Generic Address Parameter GAP Ground-to-Air Paging GAP Groupe Analyse et Previsions GAP Groupe d'Analyse(s) et Prognose(s) GAP GSF Agent Productization GAP GSM Automation Platform GAP Guaranteed Access Providers GAPI Gateway Application Programming Interface GAPP Geometric Arithmetic Parallel-Processor GARP Global Atmospheric Research Programme GARP Group Address Resolution Protocol GART Graphics Address Relocation Table GAS Group Alerting System GAS Group Autonome Spécialisé GAS GSBT, ADF, SAFT GAT General Application Template GAT Globalization Architecture Team GAT Group Audio Terminal GAT GSF Architecture Team GATE General Access to X.25 Transport Extension (OSI) GATM Guarded-Area Transfer Mode GATS GATT Services Agreement GATS GSF Activity Tracking System GATT General Agreement on Tariffs and Trade GATT Graphics Address Translation Table GB General Block Gb Gigabit GB Gigabyte GB Group Busy GB ISO country code for of Great Britain and Northern Ireland Gb/s Gigabits Per Second GBCP GISDN Basic Call Prototype GBCPT GISDN Basic Call Prototype Team GBCS Global Business Communications Systems GBG geschlossene Benutzergruppe (Closed User Group) GBH Group Busy Hour GBI Generic Billing Interface Gbit/s Gigabits per Second GBP Gain-Bandwidth Product Gbps Gigabits Per Second GBPS GigaBits Per Second GBS Generic Bridging Service GBSC Group of Blocks Start Code GBW Gain BandWidth Gbyte Gigabyte GC Garbage Collection GC Garbage Collector GC Global Coverage GC Global c-plane GC Graphics Context GC Group Center GC Guard Channel GCA Graphic Communications Association GCAC Generic Call Admission Control GCAC Generic Connection Admission Control GCAP GSM Capacity Automation Package GCAS Global Component Administration System GCC General Conference Control GCC Generic Conference Control GCC Global Cable Conveyance GCC GNU C Compiler GCD Greatest Common Divisor GCE Ground Communications Equipment GCF Gatekeeper Confirm GCF Gatekeeper Confirmation GCHQ Government Communications HeadQuarters GCI General Circuit Interface GCI Global Customer Interface GCL Generic Control Language GCL Global Control and Locate GCL GNA Global C++ Library GCM Generalized Control Model GCM GENIE Communication Manager GCMM Generic C GCO Group Chief Operator GCP Generic Communication Package GCP Generic GCP Generic Communications Package GCR Global Call Recording GCR Global Call Reference GCR Group Coding Recording (Magnetic Data Storage) GCRA Generic Cell Rate Algorithm GCS GENIE Communications System GCS Global Carrier Switch GCS Ground Control Station GCSP General Cluster Server Process GCST GSF Call Setup Team GCT Greenwich Civil Time GD ISO country code for Grenada GD&R Grinning, ducking, and running GDA Global Directory Access GDA Global Directory Agent GDB GNU Source-Level Debugger gdbm GNU Database Manager GDC General DataComm GDC Global Data Center GDC Graphic Display Controller GDD Generic Data Dictionary GDD Global Data Dictionary GDDM Global Data Distribution Manager GDDM Global Data Download Manager GDDM Graphical Data Display Manager GDDM GSF Data Distribution Model GDE Group Delay Equalizer GDF Group Distribution Frame GDG Generation Data Group GDI Generating System/Data Server Interface GDI Generic Data Interface GDI Graphical Device Interface GDI Graphics Device Interface GDLR Generic Design Layout Record GDM Generic Device Magazine GDMO Generic Data Model for Objects GDMO Guidelines for Defined Managed Objects GDMO Guidelines for the Definition of Managed Objects GDNT Guandong GDO Grid Dip Oscillator GDOP Geometric Dilution of Precision GDP Generalized Drawing Primitive GDP Generic Digit Parameter GDP Gross Domestic Product GDS General Data Stream (SNA) GDS Global Directory Service GDS Graphic Design Standard GDS Graphics Data Syntax for a multiple workstation interface GDSU Global Digital Services Unit GDT Gas Discharge Tube GDT Global Descriptor Table GDT Graphic Display Terminal GDT Guaranteed Dial Tone GDTE GISDN Development Testing Environment GDTR Global Descriptor Table Register GDX Gated Dielectric Crosspoint GDX Gated Diode Crosspoint GE General Electric Corp. GE Generic Element Ge Germanium GE Greater Than or Equal To GE ISO country code for Georgia GEA Gigabit Ethernet Alliance GEBAF Global Enhanced BAF GEC General Electric Company GECOS General Electric Comprehensive Operating System GEM Graphic Environment Manager GEM Graphical Environment Manager GEM GSM Element Manager GEMS Generic Environment for Messaging on the Switch GEMS Global Electronic Messaging Services GEMS-TTA Generalized Expert Maintenance system Trunk Trouble Analyser (ATT) GEN General GEN Global European Network GenA Generic Address GENCSC Generic Common Signalling Channel GEnie General Electric Network for Information Interchange GENIE Generic Interactive Protocol Engine GENMTC Generic Time-Slot Management Channel GenNo Generic Number GeNoti Generic Notification Indicator GEO Geostationary Earth Orbit GEO Geosynchronous Equatorial (Clarke) Orbit GEOS Geostationary Earth Orbit Satellite GEOS Graphic Environment Operating System GEOSAT Geostationary Orbit Communications Satellite GEP Generic Envelope Parameter GEP Generic Event Processor GER Generic Event Recorder GERM General Entity Relational Model GES Global Enterprise Services GES Ground Earth Station GESA GSF Emergency Stand-Alone (ESA) GETAR GSF Exceptions, Tones, Announcements and Routing GETED GSF End-To-End Delivery GETS Government Emergency Telecommunications Service GEV Giga Electron-Volt GF General Formatter GF Generic Function(s) GF Higher layer information control channel GF ISO country code for French Guiana GFC General Flow Control GFC Generic Fairness Configuration GFC Generic Flow Control GFC1 Generic Fairness Configuration #1 GFD General Feature Description GFE Government Furnished Equipment GFE Graphical Front End GFET GSF Framework Evolution Team GFI General Format Identifier GFI General Format Identifier GFI Ground-Fault Indicator GFI Ground-Fault Interruptor GFID General Format Identifier GFID Graphic Font ID GFLOPS Giga-Floating-Point Operations Per Second GFP Generic Functional Protocol GFP Global Functional Plane GFR Guaranteed Frame Rate GFS Generic File System GFS Grandfather-Father-Son GFSK Gaussian Frequency Shift Keying GFSM Graphical File System Manager GFT Generic Flow Transport GFT Generic Function Transport GFX Graphics GGA Groß-Gemeinschafts-Antennenanlage GGI Gateway to Gateway Interworking GGP Gateway-to-Gateway Protocol (TCP/IP-DoD) GGSN Gateway GSN GH ISO country code for Republic of Ghana GHA Greenwich Hour Angle GHz Gigahertz GI General Information GI General Instrument Corporation GI Generic Identifier GI Global Interface GI Graded-Index GI Group Identifier GI ISO country code for Gibraltar GIAC Group Intercom All Calls GIC Generic Interface Controller GIC Group Intercom GID Gateway Identifier GID General Information and Definitions GID Group ID GID Group Identification GIF Graphics Interchange Format GIFT GSF Independent Framework Testing GIGO Garbage In, Garbage Out GIH Global Information Highway GII Global Information Infrastructure GIM&M Global Information Movement and Management GIMP GNU Image Manipulation Program GIMR Global Interrupt Mode Register GIN German Intelligent Network GINA Global Intelligent Network Architecture GINS Global Information Network Services GIOP General Inter-ORB Protocol GIP Group Interface Profile GIP GSM Interworking access Profile GIPR Gigabit IP Router GIPS Billions of Instructions Per Second GIPSE Global Integrated Project Support Environment GIS AT&T Global Information Solutions (formerly NCR) GIS General Information Session GIS Generalised Information System GIS Geographic Information System GISDN Global ISDN GISP GSF Intra-Subnetwork Protocol GIST GSF Inter-Session Team GIT Generic Identifier Transport GIT Generic Information Transport GIT Global Identifier Tracker GIU Gateway Interface Unit GIX Global Internet Exchange GJT Graphic Java Toolkit GK Gatekeeper GKMP Group Key Management Protocol GKS Graphical Kernel System GL General Ledger GL Global GL Global Lines GL Ground Line GL Group Length GL ISO country code for Greenland GL100 Global 100 GLA Generic Layering Architecture GLATC Graphics and Languages Agreement group for Testing and Certificati on GLF Global Leadership Forum GLines Global Lines GLO General Location GLOBECOM Global Telecommunications Conference (GTC) GLONASS Global Navigation Satellite System GLS Generic Load Segment GLTC Ground Loop Test Cancel GLUT OpenGL Utility Toolkit GLVDS Ground-referenced, Low-Voltage Differential Signal GLX GL's Extension to X GM General Manager GM Generator Manager GM Group Mode GM Guaranteed Minimum GM ISO country code for Republic of the Gambia GMA Gated Mode Acquisition GMB Group Make-Busy GMBPT Group Make Busy Point GMBS GSF Meridian Business Set GMDSS Global Maritime Distress and Safety Service GMDSS Global Maritime Distress and Safety System GME Group Modulating Equipment GMEM Global Memory GMF Generalized Monitoring Facility GMF Generic Maintenance Framework GMF Global Modeling Forum GMF Graphic Monitoring Facility (SNA) GMI Generic Maintenance Interface GMI Graphical Management Interface GMII Gigabit Media Independent Interface GML Generalized Markup Language GMM Global Memory Manager GMM Global Multimedia Mobility GMM CG Global Multimedia Mobility Co-ordination Group GMO Generic Managed Object GMODTTO GSF Modifier Trace Tool GMOS Group Manager-Operator Services GMP Global Messaging Process GMPCS Global Mobile Personal Communications Services GMR Giant Magnetoresistive GMS Gate Management System GMS General Mobile System (Digital Cellular Radiocommunications) GMS Generic Multiplexer Service GMS Global Mapping Satellite GMS Global Messaging Service GMSC Gateway Mobile services Switching Centre GMSC Gateway Mobile Switching Centre (GSM term) GMSK Gaussian Minimum Shift Keying (modulation) GMSK Gaussian Minimum Shift-Keyed GMSS Global Mobile Satellite Services GMSS Global Mobile Satellite Systems GMST Generic Multiplexer Service Team GMT Greenwich Mean Time GMT Greenwich Mean Time GMT Weltzeit GMTA Great minds think alike GMTS General Mobile Telephone System GN Generic Name GN GOB Number GN Group Number GN ISO country code for Revolutionary People's Republic of Guinea GNA Globewide Network Academy GNCT Generalized No Circuit Treatment GND Ground GND Ground Start GND Group Do Not Disturb GNE Gateway Network Element GNFC Group Number Feature Control GNI Generic Internet/Subnet Interface GNIM Generic Network Information Model GNM Generic Network Model GNN Global Network Navigator GNP Graphical Network Browser GNP Gross National Product GNR Global Name Resolver GNS Global Network Service (BT) GNS Green Number Service GNSS Global aeronautical Navigation Satellite System GNT Great Northern Telegraph Co. GNU GNU's Not Unix GNW Global NetWork GOAL GSF OMs, Alarms, and Logs GOAM Government Owned And Maintained GOB Group of Blocks GOEE Generic Object Execution Environment GOES Geosynchronous Orbiting Environmental Satellite GOF Gang of Four GOLD GSM One-Chip Logical Device GOM Generic Object Model GOMMO Group OMMO GOOD GSF Object Oriented Development GOP Group of Pictures GOPS Giga (Billion) Operations Per Second GOS General Operational Sanity GOS Generic Operator Services GOS Global Operator Services GOS Grade of Service GoS Grade of Service GOSIP Government Open Systems Interconnection Profile GOSIP Government OSI Profile GOSS7 Global Operator Services Signaling #7 GOST State Committee for Standardization gov Government institutions domain GP General Product GP General Protection GP General Purpose GP Genetic Programming GP Ground Plane antenna GP Group Processor GP ISO country code for Guadeloupe GPA General Polynomial Answer mode modem GPA Generating Polynomial- Answer modem GPa GigaPascal GPA Grade Point Average GPA GSM PLMN Area GPARS Global Performance Analysis and Reporting System GPBXE GSF Public, Business and Translations Environment GPC General Polynomial Call mode modem GPC Generating Polynomial- Call modem GPCH GRPS Packet Channel GPD General Purpose Discipline GPD Generalized Probabilistic Descent GPF General Protection Fault GPF Generic Process Framework GPI Graphics Programming Interface GPIA General Purpose Interface Adapter GPIB General Purpose Interface Bus GPIC Group Primary Interexchange Carrier GPIC Per-Group Primary InterLATA Carrier GPIO General-Purpose Input/Output GPL General Public License GPL Generic Performance Language GPM Generic Peripheral Maintenance GPMC Green Paper on Mobile Communications GPNET GSF Private Networks Team GPNS Global Power Network Services GPO GPP General-Purpose Processor GPP Global Peripheral Platform GPR General-Purpose Register GPR Ground Potential Rise GPRD Global Product Rules Development GPRS General Package Radio Service GPRS General Packet Data Radio Service GPRS General Packet Radio Service GPRS General Packet Radio System GPS General Problem Solver (AI program) GPS Generalized Processor Sharing GPS Generic Presentation Service (OSI) GPS Global Position Sensing GPS Global Positioning Satellite GPS Global Positioning System GPS Global Product Support GPSM Global Packing, Shipping, and Marshalling GPSS General Purpose Simulation System GPSS General Purpose System Simulation GPT GEC PLessey Telecommunications GPTA Goungdong Post and Telecommunication Authority GPU Graphics Processing Unit GPV Global Product Verification GPWS Ground Proximity Warning System (Avionics) GQ Gillou-Quisquater GQ ISO country code for Republic of Equatorial Guinea GQBE Graphical Query By Example GQL Graphical Query Language GQOS Guaranteed Quality of Service GR Generic Requirements GR Gigabit Router GR Graceful Close GR Graphical GR Graphical Form GR Graphical Representation/Rendition GR Graphical SDL Representation GR ISO country code for Hellenic Republic (Greece) GRA Circuit Group Reset Acknowledgment message GRA Group Reset Acknowledgement Signal GRAN Generic Radio Access Network GRASP Graphical System for Presentation GRAYS Gotta Register All Your Shareware GRC Group Recall GRD Ground GRE Generalized Regular Expression GRE Generic Routing Encapsulation grep Generalized Regular Expression Print GRF General Register File GRIB Gridded Binary GRID Global Resource Identifier GRIN Graded Index GRIN Graded Refractive INdex (Cavity Laser, Telecom) GrIP Gravis Interface Protocol GRJ Gatekeeper Reject GRM Circuit Group Supervision Message GRM General Relationship Model GRM Generic Resource Manager GRM Group Reset Message GRM DB Generic Resource Manager Database GRMP Generic Resource Manager Proxy G-ROM Graphic Read-Only Memory GROW GNU Remote Operations Web GRP Generalized Routing Procedures GRP Group GRP Group Reference Pilot GRP Program Manager Group file grpc Group Close grpo Group Open GRQ Gatekeeper Request GRQ General Request message GRS Circuit Group Reset message GRS Group Reset Signal GrVSt Gruppenvermittlungsstelle (Group Switching Centre) GS G Segment GS Gateway Switch(ing) GS General Specification GS Generic Session GS Graduate Student GS GS Ground Start GS Group Selector GS Group Separator GS Group Services GS Group Switch GS ISO country code for South Georgia and the South Sandwich Islands GSA General Services Administration GSA GSM System Area GSAM GSF System Architecture Model GSAT GSF System Architecture Team GSB Generic Services Base GSBT GSF Services Base Team GSC CCS Group Signaling Congestion GSC Global Standards Collaboration (group) GSC Global Surveillance Center GSC Group Switching Center GSC2 Group Speed Calling 2-Digit GSC2NL Group Speed Calling 2-Digit Number List GSCAR Global Supplier Corrective Action Request GSCP Generic Service(s) Communication Protocol GSCP Generic Services Connection Protocol GSCP Generic Service(s) Control Protocol GSD Generic Structure Diagram GSD Global Service Directory GSDE Generic Services Design Environment GSDE Global Software Development Environment GSDN Global Software Defined Network GSDT Generic Service Design Tool GSDT GSF Services Design Tool GSE General Systems Engineer GSEE Generic Services Execution Environment GSEP Generic Session End Point GSEP GSM Service Evaluation Platform GSF Generic Services Framework GSFA GSF Architecture GSFAI GSF Agent Interworking GSFAIP Generic Services Framework Agent Interworking Protocol GSFAIP_ALT GSFAIP Alerting message GSFAIP_ANM GSFAIP Answer Message GSFAIP_CCM GSFAIP Connection Control Message GSFAIP_CPG GSFAIP Call Progress message GSFAIP_EOP GSFAIP End of Outpulsing message GSFAIP_EOS GSFAIP End of Selection message GSFAIP_FAM GSFAIP Final Address Message GSFAIP_IAM GSFAIP Initial Address Message GSFAIP_RES GSFAIP Resume message GSFAIP_RLS GSFAIP Release message GSFAIP_RSI GSFAIP Reselection Indication message GSFAIP_RSR GSFAIP Reselect Request message GSFAIP_SAM GSFAIP Subsequent Address Message GSFAIP_SOS GSFAIP Start of Selection message GSFAIP_SUS GSFAIP Suspend message GSFCP GSF Call Process GSF-FM GSF Facility Maintenance GSFI GSF Implementation GSFISP GSF Intra-Subnetwork Protocol GSFMIP GSF Maintenance Interface Protocol GSFN Generic Signaling Function GSI Giga-Scale Integration GSI Giga-Scale Integration GSI Special Group on ISDN GSIMS Global Standards Information Management System GSL Global Service Logic GSLB Group Speciale (de Communications) Large Bande GSLB-PN Group Speciale (de Communications) Large Bande- Permanent Nucleus GSM General forward Set-up information Message GSM General Setup Message GSM Generic Service Model(ing) GSM Generic Source Module GSM Global System for Mobile Communications GSM Global System for Mobile Telecommunication GSM Graphic Size Modification GSM Group Special Mobile GSM Group Switch Matrix GSM Group System Mobile GSM Groupe Spécial Mobile GSM MS Group Special Mobile Mobile Station GSM MS GSM Mobile Station GSM PLMN Group Special Mobile Public Land Mobile Network GSM PLMN GSM Public Land Mobile Network GSMA Global Scheduling Multiple Access GSMBE Gas Source Molecular Beam Epitaxy GSMM Group Standards Making Management GSMP General Switch Management Protocol GSN GPRS Support Node GSO Geostationary Satellite Orbit GSO Geosynchronous Service Orbit GSOLL GSF Services OnLine Library GSP General Service Passing GSP General System Practice GSP Global Services Planning GSP Global Services Platform GSQL Gateway SQL GSS General Satellite Service GSS Generic Security Services GSS Generic Security Standard GSS Graphic Size Selection GSS Grouped Sweeping Scheme GSSAPI Generic Security Services API GSSI Group Short Subscriber Identity (TETRA) GSSM Generic Service State Machine GSSM Global Subscriber Services Modernization GSSP Global Service Switching Point GST Global Symbol Table GST Ground Start GST Group-Specific Traffic G-STB Global Simulation Testbed GSTN General Switched GSTP Gateway Signaling Transfer Point GSVC Global Services GSVCI Global Signaling Virtual Channel Identifier GSWCT GSF Whole Cloth Team GSWFT GSF Swact Framework Team GSZ Group Size GT Give Tokens GT Global Title(s) GT Global Trunks GT Greater Than GT ISO country code for Republic of Guatemala GTA General Terminal Adapter GTA General Terms Agreement GTA Global Title Address GTA Global Trunking Architecture GTA Gopher Tape Armor (Cable Armor against Rodents) GTA Grading Terminal Assembly GTA Guam Telephone Authority GTAC Group Trunk Access Control GTC Gain Time Constant GTC Global Telecommunication Conference GTCS Group Teleconferencing Communications System GTD GEMS Test Driver GTD-3 GTD-3 (No. 3) Electronic Automatic Exchange GTD-5 GTD-5 (No. 5) Electronic Automatic Exchange GTDI Guidelines for Trade Data Interchange (EDI) GTE General Telephone and Electronics GTE Group Translating Equipment GTEDS GTE Data Services GTEI Global TEI GTEI Group TEI GTEP General Telephone and Electronics Practice GTESC GTE Service Corporation GTGB Broup Trunk Group Busy GTK GIMP Toolkit GTL Gunning Transceiver Logic GTL+ Gunning Transceiver Logic+ gTLD Generic Top Level Domain GTMOSI General Teleprocessing Monitor for Open Systems Interconnection (O SI-SNA) GTO Gate-Turn-Off (Thyristor) GTO General Telecommunications Organization GTO Geostationary Transfer Orbit GTO Government Telecommunications Organization GTOT Generic Terminal Object Team GTOT GSF Treatment Object Team GTP General Trade Product GTP Global Test Platform GTP GPRS Tunnel Protocol GTP Group of Trail Termination Points GTP Group Termination Point GTPA General Telephone Company of Pennsylvania GTPU Gas Tube Protector Unit GTR Giant TRansistor (Power Transistor Module,Toshiba Inc.) GTR Global Tone Receiver GTRK Global Trunks GTRKS Global Trunks GTRS GSSP Technical Requirements Specification GTS Generic Test Suite (obsolete) GTSI Group TETRA Subscriber Identity GTT Global Title Translation GTV Global Title Value GTWY Gateway GU ISO country code for Guam GUBB Geographic Unit Building Block GUD Grand Universal Debugger GUF GSF Upgrade Framework Team GUI Graphical User Interface GUID Globally Unique Identifier GUIDE Graphcal User Interface for Data Engineering GUL General Use Line GULS Generic Upper Layer Security GUM Grand Unified Multicast Gup Group Update Program GUS GSBT, Utility Services, SAFT GUS Guide to the Use of Standards (SPAG) GUTS GSF Unified Translations System GVA Generalization of the Viterbi Algorithm GVAC Global VFG Access Control GVGB Global Virtual Group Busy GVNS Global Virtual Network Service GVP Group Vice President GVPN Global VPN GW Gateway GW Gateway Switch GW Glue and Wave GW ISO country code for Republic of Guinea-Bissau GWCS General Wireless Communications Service GWHIS Global-Wide Help & Information System GWM Generic Window Manager GWS Gateway Screening GWS Genesis Work Station GWSA Gateway Service Analysis GWY Gateway GXLA Generic Translation and Routing Team GXLA Global Translation GXLA GSF Translations and Routing GXPM Global XPM GXPM GSF XPM GY ISO country code for Republic of Guyana gz GNU Zip back to top|0-9|A|B|C|D|E|F|G - H - I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

H Half h Handle H Hashing H Header H Header File h Header File h hecto (10) H Henry H Hexadecimal H High H High h High Frequency H Horizontal h hour H Hybrid H# House Number H&J Harris & Jeffries, Inc. H/M Hotel/Motel H/O Handoff H/O Handover H/PC Hand-Held PC H/W Hardware H0 Channelized 384 kbps H0H11 Channelized 384 and 1536 kbps H1 Heading Level 1 (HTML tag) H11 Channelized 1536 kbps H12 Channelized 1920 kbps H2 Heading Level 2 (HTML tag) H3 Heading Level 3 (HTML tag) H4 Heading Level 4 (HTML tag) H5 Heading Level 5 (HTML tag) H6 Heading Level 6 (HTML tag) HA Hardware Assigned HA HDLC Adaptor HA Head of Bus A HA High Assurance HA High Availability HA Home Agent HA Home Automation HA1 HDLC Adaptor, Type 1 HAC Hearing Aid Compatibility HACA Hybrid Adaptive-Channel Allocation HACMP High Availability Cluster Multiprocessing HAD Half Amplitude Duration HADS HOBIC Administrative HADS Hotel Administration Data System HAI Hardware Accelerator Interface HAL Hard Array Logic HAL Hardware Abstraction Layer (Windows NT) HAL Hardware Abstraction Level HAL Hierarchical Applications Limited HALE High Altitude Long Endurance HALO High Altitude Long Operation HALT Highly Accelerated Life Test HAM Hold and Modify HAM Hybrid Access Method HAMT Human-Aided Machine Translation HAN Home Area Network HAN Host Access Network HAN Hybrid Assigned Nematic HANDO Handover HANFS High Availability Network File System HAP Host Access Protocol HAR CENELEC Agreement for electrical cords and cables HAR HARmonisation agreement for cables and cords HARC Houston Advanced Research Center HARM High-speed Anti-Radar Missile (US Military) HAs Hauptanschluss (Main Station/Terminal/Connection) HAS HIPPI-ATM-SONET HASAWA Health and Safety At Work Act HAsl Hauptanschlussleitung (Main Service Line) HASP Houston Automatic Spooling Program HASU Hardware Assigned, Software Unassigned HAT Hardware Address Translation HAT Hash Anchor Table HAT Home Area Toll HATS Harmonization of Advanced Telecommunication Systems conference HATS Head And Torso Simulator HAW1 Continental U.S.-Hawaii submarine cable #1 HAW2 Continental U.S.-Hawaii submarine cable #2 HAW3 Continental U.S.-Hawaii submarine cable #3 HAW4 Continental U.S.-Hawaii submarine cable #4 HAx HDLC Adaptor, Type x HAZMAT Hazardous Materials Team HB Hard Blocking HB Head Bus (=master) HB Head of Bus B HB Height-Balanced HB High Band HB Hybrid HBA Hardware Group Blocking Acknowlegment Signal HBC High Blow Capacity (Fuse) HBFG Host Behavior Functional Group HBI Horizontal Blanking Interval HBL Hue, Brightness, Luminosity HBO Home Box Office HBS Home Base Station HBT Heterojunction Bipolar Transistor HBUR Hardware Blocking/Unblocking Reception HBUS Hardware Blocking/Unblocking Sending HBUS Horizontal-Bus H-BUS Horizontal Bus HC Half Call HC Half-Connection HC Handoff Call HC Hard Copy HC Harmonic Coding HC High Capacity HC Hold Capability (Call Hold) HC Hop Count HC House Cable HCA High-Contrast Addressing HCA Hybrid Channel Allocation HCB Hardware Control Block HCB History Control Block HCCM High Performance Common Channel Signaling Module HCDS High Capacity Digital Service HCDT Hold/Conference/Transfer/Drop HCF Host Command Facility (NetView) HCI Human-Computer Interaction HCIL Human-Computer Interaction Laboratory HCL Hold Calling Line HCL Hummingbird Communications Ltd. HCMM Heat Capacity Mapping Mission HCMOS High-Density Complementary Metal-Oxide Semiconductor HCMOS High-Speed Complementary Metal-Oxide Semiconductor HCMTS High-Capacity Mobile Telecommunications System HCP Hard Copy Printer HCP Horizontal Candle Power (Optics) HCS Hard Clad Silica HCS Header Check Sequence HCS Hierarchical Cell Structures HCSD High-Speed Circuit Switched Data HCSDS High Capacity Satellite Digital Service HCSM High Performance Common Channel System Module HCSS High-Capacity Storage System HCST Haut Comite des politiques Scientifiques et Techniques HCT High-Capacity Transport HCT Home Communications Terminal HCTDS High Capacity Terrestrial Digital Service HCV High Capacity Voice HD Half Duplex HD Handover Detection HD Hard Disk HD Hard Drive HD Harmonic Distortion HD Harmonization Document (CEN) HD HeaD(er) HD Heavy Duty HD High Day HD High Definition HD High Density HD Hold HDA Head/Disk Assembly HDB High Density Binary HDB High Density Bipolar HDB High Density Bipolar code HDB History Data Block HDB Home Database HDB3 High Density Bipolar of Order 3 HDB3 High-Density Bipolar- 3 Zeros HDB3 High-Density Bi-polar 3 (line code) HDB3 High-Density Bipolar Three HDBH High Day Busy Hour HDBT High Definition Broadcast Technology HDC Device Context Handle HDC Hard-Disk Controller HDC High Definition Camera HDC High Density Complementary Metal-Oxide Semiconductor (Motorola Inc .) HDCD High-Density CD HDCT Hybrid Discrete Cosine Transform HDD Hard-Disk Drive HDDF High Definition Digital Frame HD-Divine High Definition Digital Video Narrowband Emission HDF HDSL Dual Framer HDF Hierarchical Data Format HDF Horizontal Distributing Frame HDI Hardware Design Inspection HDI Head/Disk Interference HDL Hardware Description Language HDLC Hierarchical Data Link Control HDLC High Level Data Link Control (Protocol) HDLC High-Level Data Link Control HDM Hardware Description Manual HDM Hardware Device Module HD-MAC High Definition Multiplexed Analog Components HD-MAC High Definition Multiplexed Analogue Component TV HDML Handheld Device Markup Language HDOC Hardware Document HDPE High Density PolythenE (Insulation) HDR HDSL Dual Repeater HDR Header HDR Header Label HDR High Density Recording HDR1 Data Set Header Label 1 HDR1 Header 1 HDR2 Data Set Header Label 2 HD-ROM High-Density Read-Only Memory HDS Head Set HDS Holographic Diffractive Structure HDSH High Day Service Hour HDSL High-Bit-Rate Digital Subscriber Line HDSL High-Speed Digital Subscriber Line HDSL High-Speed Digital Subscriber Loop HDSM High Density Surface Mount HDT Hawaii Daylight Time HDT Host Digital Terminal HDTP Hoofdirectie Telecommunicatie en Post (NL) HDTV High Definition Television HDU High Speed Data Unit HDV High Definition Videotape HDVS High-Definition Video System HDW Home Data Base HDX Half Duplex HDX Half DupleX operation HE Headend HE Head-End HE Header Extension HE Heat Exchanger HE/CO Head-End/Central-Office HEC Header Error Check HEC Header Error Control HEC Header Error Correction HEC Header Extension Code HECI Human Equipment Catalog Item HEE High Emitter Efficiency (Semiconductor Fabrication Process) HEHO Head-End Hop-Off HEL Hardware Emulation Layer HEL Header Extension Length HEL High Energy Laser HEM Headend Manager HEM Horizontal Editing Mode HEMP High-Altitude Electromagnetic Pulse HEMP High-level Entity Management Protocol (TCP/IP-DoD) HEMS High-level Entity Management System (TCP/IP-DoD) HEMT High Electron-Mobility Transistor HEO High Elevation Orbit HEO Highly Elliptical Orbit HEO Highly-inclined Elliptical Orbit HEOS Highly Eccentric Orbit Satellite HEP Heterogenous Element Processor HES Home Electronic Systems (IEC) HEX Hexadecimal HEXID Hexadecimal Identifier HF Hands-Free HF High Float HF High Frequency (3...30 MegaHertz) HF Human Factors HFC High Frequency Correction HFC Hybrid Fiber Coax HFDF High Frequency Distribution Frame HFP HDLC Frame Processor HFP Host-to-Front-End Protocol HFS Hierarchical File System HFS High-performance File System HFS Human Factors Society HFT HDLC Frame Transceiver HFU Handsfree Unit HFU Hands-Free Unit HG Hunt Group HG ISDN Multiline Hunt Group HGA Hardware Carrier Group Alarm HGA Hercules Graphics Adapter HGB Hardware failure oriented Group Blocking message HGB Hardware Group Blocking Signal HGC Hercules Graphics Card HGC Hercules Graphics Controller HGED High Gain Emissive Display HGHT Hunt Group Hunt Terminal HG-I ISDN Hunt Group HGL Hewlett Packard Graphics Language File HGU Hardware Group Unblocking Signal HH Handheld HH Hanging Handset HH Header Hub HH High-High HH High-High Algorithm HH Horizontal High HHI Human-Human Interaction HHO Hard Handover HHOK Ha ha only kidding HHP Handheld Portable Phone HI Handover Initiation HI Hashed Index HI High Priority HI U.S. postal code for Hawaii HIA Human Interface Architecture HIC Handset Identity Code HIC Header Integrity Check HIC Heterogeneous InterConnect HIC Highest Incoming Channel HIC Hybrid Integrated Circuit HICC Host Interface Chip with Channel Supervision HICOM High Technology Communication HIDF Horizontal side of Intermediate Distribution Frame HIDLE High Idle HIDOM High Impedance Digital Output Mode HIE Host Interface Equipment HIER Hierarchical HIF Host Interface HILDA High Level Debugging Assistant HILI HIgher Layer Interface (IEEE 802.1) HINFO Host Information HINIL HIgh-Noise-Immunity Logic HIO Halt I/O HIO Highly Inclined Orbit Hiperlan High Performance Radio Local Area Network HIPER-LAN High Performance Radio LAN HIPPI High-Performance Parallel Interface HIPPO High Speed Instruction Prefetcher and Path Organizer Hippo HIPPO functionality plus additional functionality HIS Highest Issue HIS Home Intercom Service HiS Home internet Solution HIS Hospital Information System HIT Hierarchical Incremental Testing HIT High Isolation Transformer HIU Headend Interface Unit HIU Home Database Interface Unit HIU Host Interface Unit hk Internet country code for Hong Kong HK ISO country code for Hong Kong HKCR HKEY_CLASSES_ROOT HKCU HKEY_CURRENT_USER HKLM HKEY_LOCAL_MACHINE HKZ Haupanschlusskennzeichen (German analog protocol without DDI) HL Higher Layers HL High-Low HL Hot Line HLA High Level Assembler HLC High Layer Capabilities HLC High Layer Compatibility HLC High Level Committee (ITU) HLC Higher Layer Compatibility HLCDBL1 High-Layer Compatibility Information Delivery Billing Records (Int ranetwork) HLCDBL1P High-Layer Compatibility Information Delivery Billing Records (Int ranetwork) for PRI HLCDBL2 High-Layer Compatibility Information Delivery Billing Records (Int ernetwork) HLCDBL2P High-Layer Compatibility Information Delivery Billing Records (Int ernetwork) for PRI HLCIE High Layer Compatibility Information Element HLCIT High Layer Compatibility Information Transfer HLD Call Hold HLD Head Load HLD High Level Design HLD High Level Document HLD Hold HLDA Hold Acknowledge HLDE High Level Design Estimate HLDR High-Level Design Review HLE Host Link Extension HLEN Header Length HLF High Layer Function(s) HLF Higher Layer Function(s) HLF High-Level Format HLF High-Level Formatting HLFD High Level Feature Design HLI High-Layer Information HLIC High Level Intent Code HLIU High Speed Link Interface Unit HLL High Level Language HLL High Level Logic HLL High Loss Loopback HLL High-Level Language HLLAPI High-Level Language API (IBM) HLLB High Loss Loopback HLM Heterogeneous LAN Management (IBM, 3COM) HLMS Heterogenous LAN Management Specification HLN Headline News HLN Hot Line (Direct Connect Line) HLP Help File HLPI High Level Protocol Interworking HLPI Higher Layer Protocol Identifier HLR Hidden-Line Removal (3-Dimensional Electronic Imaging) HLR Home Location Register (GSM term) HLR Home Location Registry HLRN Home Location Routing Number HLS Hue, Lightness, Saturation HLS Hue, Luminance, Saturation HLS Hue, Luminosity, Saturation HLSC High-Level Service Circuit HLSIB High-Level SIB HLT Halt HLT Halt (80x86 inst) HLT Head Load Time HLT Heterodyne Look-Thru HM Hotel/Motel HM Hotel/Motel Selection HM ISO country code for Heard and McDonald Islands HMA High Memory Area HMA Human-Machine Adaptation HMB Higher Middle Byte HMBN Hotel/Motel Service Selection Billing Number HMBS1 Hunt Make Busy Set 1 HMBS1D Hunt Make Busy Set 1 CMD HMBS1V Hunt Make Busy Set 1 VI HMBS2 Hunt Make Busy Set 2 HMBS2D Hunt Make Busy Set 2 CMD HMBS2V Hunt Make Busy Set 2 VI HMBS3 Hunt Make Busy Set 3 HMBS3D Hunt Make Busy Set 3 CMD HMBS3V Hunt Make Busy Set 3 VI HMBS4 Hunt Make Busy Set 4 HMBS4D Hunt Make Busy Set 4 CMD HMBS4V Hunt Make Busy Set 4 VI HMCG Signaling Link Congestion HMCS Hotel/Motel Class of Service HMD Head-Mounted Display HMDC MTP Message Discrimination HMDF Horizontal side of Main Distribution Frame HMDT MTP Message Distribution HMI Horizontal Motion Index HMI Host Micro Interface HMI Hub Management Interface HMI Human-Machine Interface HML Multiline Hunt Group H-MLP High speed Multi-Layer Protocol HMM Hidden Markov Model HMMP Hyper Media Management Protocol HMMS Hypermedia Management Schema HMOS High-Performance NMOS HMP Host Monitoring Protocol HMR Hotel/Motel Routing HMRP Hotel/Motel Register Pulsing HMRT MTP Message Routing HMS Hierarchical Master-Slave HMS Host Mediation Services HMSC Home MSC HMSH High Month Service Hour HMSO Her Majesty's Stationary Office (UK) HMTG Homogeneous Trunk Group HMUX Hybrid Multiplexer H-MUX Hybrid Multiplexer H-MVIP High-Capacity MVIP HN Hungarian Notation HN ISO country code for Republic of Honduras HNFN Home Numbering and Foreign Numbering HNL number of LSBs to be compared when operating outside Home Network HNPA Home Numbering Plan Area HNS Hughes Network Systems HNT Hunt HO Handoff HO Handover HO Hotel HOB Head of Bus HOB Hierarchical Operational Binding HOBIC Hotel Billing Information Center HOBIS Hotel Billing Information System HOC Handover Control HOC Highest Incoming Channel HOC Highest Outgoing Channel HOC Host Collector HOC Host Office Collector HoD Head of Department (ETSI) HO-DSP High Order Domain Specific Part HOF Head Of Form HOH HDSL Overhead HOL Head of the Line HOL High Order Language HOL Holiday List (Table) HOLD call HOLD (supplementary service) HOLD Hold message HOLD ACK Hold Acknowledge message HOLD REJ Hold Reject message HON Handover Number HOOD Hierarchical Object Oriented Design HOOPS Hierarchical Object-Oriented Programming System HOP Higher Order Path HOPA Higher Order Path Adaptation HOPL History of Programming Languages HOPS Host Proximity Service HOPSN Higher Order Path Sub-Network HOPT Higher Order Path Termination HOS Higher-Order Statistics HOST HOST computer HoT Home Office Technology HOT Home Office Telecommunication HoT Home Office Telephony HOT Hot Line HOT Hotel/Motel HOTH Handoff Threshold High HOTL Handoff Threshold Low HOVC Higher Order Virtual Container HP Hewlett-Packard HP High Pass (filter) HP High Priority HP Home Page HP Home Passed HP DST Hewlett Packard Distributed Smalltalk HP VUE Hewlett-Packard Visual User Environment HPA High Performance Addressing HPA High Power Amplifier HPA Higher-order Path Adaptation HPA Horizontal Position Absolute HPAD Host Packet Assembler/Disassembler HPBW Half Power Beam Width HPC Hand-held Personal Computer HPC High Performance micro-Controller HPC High Probability of Completion HPC Higher-order Path Connection HPCC High Performance Computing and Communications (US) HPCS Heterogeneous PCS HPDD High Performance Disk Driver HPDLC Hewlett-Packard (Inc.) Data Link Control HPDS Hewlett-Packard Distributed Smalltalk HPDST Hewlett-Packard Distributed Smalltalk HPF High Pass Filter HPF High Performance FORTRAN HPFR High Performance Frame Relay HPFS High Performance File System HPGL Hewlett-Packard Graphics Language HP-GL Hewlett-Packard Graphics Language HP-HIL Hewlett-Packard Human Interface Link HPIB Hewlett-Packard Interface Bus HP-IB Hewlett-Packard Interface Bus HPIN Handset Personal Identification Number HPJ Help Project file HPJ High Performance Compiler for Java HPLMN Home Public Land Mobile Network HPM High-Performance Module HPN High Performance Network HPOV Hewlett-Packard OpenView HPP Heuristic Programming Project (Application of AI) HPPA Hewlett-Packard Precision Architecture HP-PA Hewlett-Packard Precision Architecture HP-PB Hewlett-Packard Precision Bus HPPI High Performance Parallel Interface (ANSI) HPR High Performance Routing HPR Horizontal Position Relative HPS High Power Satellite HPSOS Hewlett Packard Switch Operating System HPSOS High Performance Switch Operating System HP-SOS HP-based Support Operating System HPSS High-Performance Switching System HPT Hand-held Personal Telephone HPT Higher-order Path Termination HPU Hand Portable Unit HPUX Hewlett-Packard Unix HP-UX Hewlett-Packard Unix HPV High Performance Video HPV Highest PVC HQ Headquarter HQ High Quality HR Half Rate HR Half Rate HR High Reliability HR High Resistance HR High Runner HR Hitachi Review (periodical) HR Horizontal Rule (HTML tag) HR Human Resources HR ISO country code for Hrvatska (Croatia) HRC HaRd Copy HRC Hybrid Ring Control HRC Hypothetical Reference Circuit HRC Hypothetical Reference Connection HRCDC High Runner Call Data Compression HRD Handbook of Reliability Data HRD High-Resolution Diagnostics HRD Hypothetical Reference Decoder HRDP Hypothetical Reference Digital Path HREF Hypertext Link Reference (HTML tag) HRFAX High Resolution Facsimile HRI High Resolution Imagery HRN Highest Response Ratio Next HRP Hardware Reference Platform HRSC High Runner Structure Code HRSC Hypothetical Signaling Reference Connection HRT High Rate Telemetry HRTF Head-Related Transfer Function HRX Hypothetical Reference Circuit HRX Hypothetical Reference Connection HS Half Session HS HandSets HS Hatch Style HS High Speed HSAM Hierarchical Sequential Access Method HSB Hue, Saturation, Brightness HSC Hexadecimal Sequential Code HSC Home Shopping Channel HSCD High Speed Circuit Data HSCP High Speed Card Punch HSCR Hardware Scheduler Condition Register HSCSD High Speed Circuit Switched Data HSCT High Speed Compound Terminal HSD High Speed Data HSDA High Speed Data Access HSDC High-Speed Data Card HSDL High Speed Data Link HSDM High-Speed Data Module HSDS High-Speed Data System HSDU High Speed Data Unit HSDU High Speed Dial Up HSET Headset Trunk HSG High Sierra Group HSI Hardware-Software Interface HSI High Speed Interface HSI High-layer Status Indicator HSI Hue Saturation Intensity (Electronic Imaging) HSIO High-Speed I/O HSL High Speed Link HSL High-Level Scripting Language HSL High-Speed Signaling Link HSL Hue, Saturation, and Luminosity HSLAN High-Speed LAN HSLI High-Speed Line Interface HSLN High Speed Local Network HSLR High Speed Link Route HSM Hierarchical Storage Management HSM Hierarchical Storage Manager HSM Host Switching Module HSMO High Stability Master Oscillator HSN Home Shopping Network HSN Hopping Sequence Number HSO Host Switching Office HSP High Speed Printer HSP Host Slave Present HSPTP High Speed Paper Tape Punch HSPTR High Speed Paper Tape Reader HSQR0 Host Sequence Register 0 HSQR1 Host Sequence Register 1 HSR Hardware Status Register HSR Hidden-Surface Removal (3-D Electronic Imaging) HSR High Speed Reader HSR Home Service Region HSR Horizontal Scan Rate HSRP Hot Standby Router Protocol HSRR0 Host Service Request Register 0 HSRR1 Host Service Request Register 1 HSS High Speed Switch HSSC High Speed Signalling Capability HSSDS High Speed Switched Digital Service HSSI High Speed Serial Interface HSSL High-Speed Signaling Link HST Hawaii Standard Time HST High-Speed Technology HSV Hue, Saturation, Value HT Halt Typing HT High Tension HT High Tone HT Hilly Terrain HT Holding Time HT Home Terminal HT Horizontal Tab HT Horizontal Tabulation HT Hyper Terminal file HT ISO country code for Republic of Haiti HTA Hunting Allowed HTA HyperText Application HTABL Hunt Terminal Aggregate Busy Limit HTC HDLC Transceiver Cell HTC Highest Two-Way Channel HTCMDBL Hunt Terminal Busy Limit for Circuit Mode Data Calls HTCPCP Hyper Text Coffee Pot Control Protocol HTD Hardware Technology Division HTD Hunting Denied HTDS HDLC Transparent Data Service HTF Hub Terminal Facility HTFS High Throughput File System HTGB High Temperature Gate-Bias (Power Semiconductor Stress) HTJ Horizontal Tab with Justification HTL High Threshold Logic HTL Hot Line HTL Hotel Call HTML HyperText Mark-up Language HTR Hard-to-Reach HTR Hierarchical Trunk Reservation HTRB High Temperature Reverse-Bias HTRF Hard-to-Reach Flag HTRLD Handoff Threshold HTRP Hard-to-Reach Peg HTS High-Temperature Superconductive HTS High-Temperature Superconductivity HTS Home Team Sports HTS Horizontal Tab Set HTSL HochTemperatur SupraLeiter HTTG Heterogeneous Trunk Group HTTP Hypertext Transfer Protocol HTTPD HTTP Daemon HTTP-NG HTTP-Next Generation HTU HDSL Terminal Unit HTU-C HDSL Terminal Unit- Central Office HTU-R HDSL Terminal Unit- Remote Site HTVBL Hunt Terminal Busy Limit for Voice Calls HU Hardware Unassigned HU High Usage HU Home Unit HU ISO country code for Hungarian People's Republic (Hungary) HUA Hardware Group Unblocking Acknowledgment Signal HUD Heads Up Display HUG High-Usage Group HUI Help User Interface HUNT Hunting HUNTYP Hunting Type HUT High Usage Threshold HUT High Usage trunk HUTE High Usage Threshold Exceeded HV High Voltage HVAC Heating, Ventilation and Air Conditioning HVC High-Order Virtual Container HVC Hue, Value, and Chroma HVEPIC High Voltage Enhanced Performance Implanted CMOS (IC Process) HVIC High Voltage Integrated Circuit HVL Half-Value Layer HVP Hierarchical Virtual Partitioning HVP High-Voltage Protection HVP Horizontal and Vertical Position HVS Hospitality Voice Services HVS Human Visual Systems HVSD High Voltage Shutdown HVSt Hauptvermittlungsstelle (Tandem Level Switching Exchange) HVt Hauptverteiler (Main Distribution Frame) HW Half Word HW Halfword HW Hardware HW High and Wet HwAns Announcement HWC Hardware Controller HWD Height, Width, Depth HWDP Hardware Development Process HWFIT Hardware Fault Insertion Test HWLR Howler message HWND Handle to a Window HWR Heavy Water Reactor HX Halt Execution HXS Home eXtended Service network HyCoS Hypermedia Communication Server Hz Hertz back to top|0-9|A|B|C|D|E|F|G|H - I - J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

I Current I Image I Indication I Information I Information field I In-Phase i int I Intensity I Interactive Framework I Interactor I Interconnectivity I Interface I Intermediate Frame I Intra Picture (frame) I Intraframe i Italic I Italics (HTML tag) I&I Interworking and Interoperability I/A Inquiry/Acknowledgement I/C Incoming I/E Implicit/Explicit I/F Interface I/G Individual/Group I/O Input/Output I/OC Input/Output Channel I/S Information Systems I/S Information/Supervisory Type Packet I/S In-Service I/T Information Technology I18N Internationalization I2 Interface Paging Area Controller-BS I2 Internet2 I2O Intelligent I/O I2T Intelligent Interface Technology I3 Interface Paging Network Controller-Paging Area Controller I4 Interface Paging Network Controller-Paging Network Controller IA Aggregate Only for Calls Incoming to BBG IA Implementation Agreement IA Incoming Access IA Ineffective Attempt IA Initial Address IA Integration Alpha IA Integration Alpha Tested IA Intel Architecture IA Intelligent Agent Ia Interface point a IA International Alphabet IA Internet Assistant IA Intrabay IA U.S. postal code for Iowa IA5 International Alphabet No. 5 IA-64 Intel Architecture-64 IAA IAM Acknowledgement message IAA Ineffective Attempt Analysis IAAB Inter-American Association of Broadcasting IAAC Inter-Access Agent Communication IAB Initial Address Buffer IAB Internet Activities Board IAB Internet Architecture Board IABS Integrated Access Billing System IAC Industry Advisory Committee IAC Information Access Corporation IAC Initial Alignment Control IAC Integrated Access Controller IAC Interapplication Communication IAC International Access Code IAC Internet Association of the Carolinas IAC Interpret As Command IAC Intracalling IAC ISDN Access Controller I-ACB ISDN Automatic Callback I-ACG Incoming Automatic Code Gap IACP Initial Address Confirmation Pointer I-ACR ISDN Anonymous Call Rejection IACS Integrated Access and Control System IACS Integrated Access and Cross-Connect System IAD Integrated Alarm Display IAD MDII: Incomplete Address Detected IAE Integrated Access Equipment IAF Intelligent Access Function IAF Intelligent Alarm Filtering IAF Interleaf ASCII Format IAF Internet Address Finder IAG Instruction Address Generation IAGC Instantaneous Automatic Gain Control IAHC International Ad Hoc Committee IAI Initial Address Information IAI Initial Address Message with Additional Information IAL Intel Architecture Lab IAL International Algebraic Language IALA International Association of Lighthouse Authorities IAM Initial Address Message IAM Integrated Access Module IAML Intraoffice Matching Loss IAN Integrated Analog Network IAN Internetworking among ATM Networks IANA Internet Assigned Numbers Authority IANAL I am not a lawyer IANL Immediate Action Noise Limit IAO Intraoffice IAO Intraoffice Optical Interface IAOG International ADMD Operators Group IAP Industrial Applications Programming IAP Initial Acquisition Phase IAP Intercept Access Point IAP Provider IAR IAM Reject message IAR Incoming Access Restrictions I-AR ISDN Automatic Recall IARU International Amateur Radio Union Ias Intelligent Agents IAS Internet Authentication Server IAS Internet Authentication Services IAS Intraswitching IASG Internet Address Subgroup IASG Internet Address Summary Group IASP Initial Address Service Pointer IASP Interactive Automated Split-Referral IAT Information Access Technology IAT Integrated Access Terminal IAT ISDN Architecture Team IAT1 Interannouncement Timer 1 IAT2 Interannouncement Timer 2 IAT3 Interannouncement Timer 3 IATA International Air Transport Association IATMT1 Interannouncement Treatment 1 IATMT2 Interannouncement Treatment 2 IATMT3 Interannouncement Treatment 3 IATMT4 Interannouncement Treatment 4 IAV Integrated Access Vehicle IAV Intelligent Access Vehicle I-AWC Intelligent Area Wide Centrex IAYF Information At Your Fingertips IB In-Band IB Inband Signaling IB Incoming Busy IB Information Brokerage IB Input Buffer Ib interface point b IBA Inband Alerting IBA Independent Broadcasting Authority IBAC In-Band Adjacent Channel IBAS Integrated Broadband Access System IBAT Instruction BAT IBBA Intelligent Building Business Alliance IBC Integrated Broadband Communications IBC International Broadcasting Convention IBC ISDN Burst Transceiver Circuit IBCN Integrated Broadband Communication Network IBCS Integrated Business Communication Systems iBCS Intel Binary Compatible Standard IB-DCA Interference-Based Dynamic Channel Allocation IBDN Individual Billing Directory Number IBDN Integrated Building Distribution Network ibe Immediate Block Errors IBERT Integrated Bit Error Rate Test IBERT Integrated Bit Error Rate Tester IBERT Integrated Bit Error Rate Testing IBEW International Brotherhood of Electrical Workers IBEX Input, Block, Extra IBG Interblock Gap IBGP Internal BGP IBI International Broadcasting Institute IBL Individual Business Line IBL Initial Boot Loader IBM International Business Machines IBMCS IBM Cabling System IBMJRD IBM Journal of Research and Development (periodical) IBML Interbay Message Link IBMS Input, Block, Missing IBMSJ IBM Systems Journal (periodical) IBN Institut Belge de Normalisation (B) IBN Integrated Broadband Network IBN Integrated Business Network IBN Isolated Bonding Network IBN7 Integrated Business Network CCS7 IBNAC IBN Attendant Console IBNC Input, Block, Not Consistent IBNS Integrated Business Network Services IBNT2 Integrated Business Network Two-Way Trunk Group IBNTI Integrated Business Network Incoming Trunk Group IBNTO Integrated Business Network Outgoing Trunk Group IBOC In-Band On Channel IBP Incremental Bar Printer IBP Interupted Bernoulli Process IBP Itty-Bitty Processor IBR Initial Business Review IBRC In-Band Reversed Channel IBS Integrated Business Services IBS Intelligent Base Station IBS INTELSAT Business Service IBSG Internetwork Broadcast Sub-Group IBSS Independent Basic Service Set IBT Telephone IBT Intrinsic Burst Tolerance IBTM Interactive Billing Transaction Manager IBTN Integrated Broadband Telecom Network (ISDN) IBTO International Broadcasting and Television Organization IBUFG Internetwork Broadcast/Unknown Functional Group IBUS Intelligent Bus I-BUS Intelligent Broadcast/Unknown Server IBWM Intelligent Bandwidth Management IBWM Intelligent Bandwidth Manager IC In Charge IC Include Call (TETRA) IC Incoming IC Incoming Call IC Independent Certification IC Individual Contributor IC Information Channel IC Input Context IC Input Controller IC Installable Command IC Instruction Counter IC Instruction Fetch Cycle IC Integrated Circuit IC Integrated Controller IC Integration Complete IC Intelligent Copier IC Intercept IC Interconnect IC Interexchange Carrier IC Interface Control IC Interference Cancellation IC InterLATA Carrier IC Interlock Code IC International Channel IC1 Interface Configuration Phase 1 IC2 Interface Configuration Phase 2 ICA Independent Computing Architecture ICA Information Content Architecture ICA Inter Component Assessment ICA Intercom Appearance ICA International Communications Association ICAM Integrated Computer-Aided Manufacturing ICAMA International Centralized Automatic Message Accounting ICAN Individual Circuit Analysis ICAN Integrated Customer Advanced Networking I-CAN Integrated-Customer Advanced Networking I-CAN ISDN-Customer Advanced Networking ICAO International Civil Aviation Organization ICAPI Internet Connection API ICARUS Integrated Circuit Artwork Utility System ICAS Interconnection and Accounting Separation ICB Incoming Call Barring ICB Incoming Calls Barred ICB Individual Case Basis ICB Integrated Channel Bank ICB Integrated Chernoff Bound ICB Integrated Collector Bus ICBM InterContinental Ballistic Missile (Military) ICBR Intracompany Business Rules ICC Illinois Commerce Commission ICC Incremental Corrective Content ICC Independent Common Carrier ICC Inspection Coordination Committee (IEC) ICC Integrated Circuit Card ICC Integrated Communication Controller ICC International Chamber of Commerce ICC International Color Consortium ICC International Communications Conference ICC International Computation Center (UNESCO) ICC International Conference on Communications ICC International Control Center ICC Internodal Communications Controller ICC ISDN Communications Controller ICCB Internet Configuration Control Board ICCB Internet Control and Configuration Board ICCC Inter-Client Communications Conventions ICCC International Conference on Computer Comunications ICCCM Inter-Client Communications Conventions Manual ICCF Industry Carriers Compatibility Forum ICCM Incoming Call Center Management ICCP Informations Computer and Communications Policies (OECD) ICCS Incremental CCS ICCS International Conference on Communications Systems ICCT International Conference on Communication Technology ICCV International Credit Card Validation ICD InterLATA Carrier Domestic ICD International Code Designator I-CD ISDN Call Deflection ICDA Integrated Cached Disk Array I-CDB ISDN Call Deflection for Basic Rate Interfaces ICDC InterLATA Carrier Denial Check ICDCS International Conference on Distributed Computing Systems ICDIAL Interexchange Carrier Dialing ICDL Intermediate Circuit Description Language ICDR IC Denial Check Response ICDR Inward Call Detail Recording ICE In-Circuit Emulation ICE In-Circuit Emulator ICE Integrated Capacity Expansion ICE Integrated Communications Environment (AUXCO) ICE Integrated Cryptographic Engine ICE Interference Canceling Equalizer ICE ISDN Capacity Enhancement ICECAN Iceland-Canada submarine cable ICES International Conference on Electronic Switching ICF Information Conversion Function ICF Intelligent Control Function ICF Isochronous Convergence Function I-CF ISDN Call Forwarding I-CFB ISDN Call Forwarding Busy I-CFBIO ISDN Call Forwarding Interface Busy Incoming Only I-CFDA ISDN Call Forwarding Don't Answer I-CFDAIO ISDN Call Forwarding Don't Answer Incoming Only ICFG IASG Coordination Function Group I-CFIB ISDN Call Forwarding Interface Busy I-CFIBIO ISDN Call Forwarding Interface Busy Incoming Only I-CFIG ISDN Call Forwarding Intragroup Only I-CFIO ISDN Call Forwarding Incoming Only I-CFPF ISDN Call Forwarding Over Private Facilities I-CFV ISDN Call Forwarding Variable I-CFVCG ISDN Call Forwarding Variable for Customer Groups ICG Intercom Group ICG Intercom Groups ICG Inter-sector Coordination Group ICG Intersectoral Coordination Group ICH Insert Character(s) ICH Handling ICI Image Component Information ICI Incoming Call Identification ICI Incoming Call Identifier ICI Incoming Call Indication ICI Incoming Call Indicator ICI Ingress Context Identifier ICI Inter-Carrier Interface ICI Interexchange Carrier Interface ICI Interface Control Information ICI InterLATA Carrier International ICI Intermedia Communications of Florida Inc. I-CIDS ISDN Calling Identity Delivery and Suppression ICIP Intercarrier Interface Protocol ICL Incoming Callers List ICL Incoming Line ICL Incremental Class Loading ICL Inserted Connection Loss ICL International Computer Limited ICL Inter-union Commission on the Lithosphere ICLATA Intra-LATA Carrier Selection ICLID Incoming Calling Line Identification ICLT Integrated Circuit Laser Testing ICM IEEE Communications Magazine (periodical) ICM Image Color Matching ICM In-Call Modification ICM Incoming Call Memory ICM Integrated Call Management ICM Integrated Computer Module ICM Integrated Node Maintenance ICM Intelligent Call Management ICM Intercom ICM Interface Control Model ICM Interface-Control-Model ICM Inward Call Management ICMCS International Conference on Multimedia Computing and Systems ICMD Instruction MMU/Cache/TIC Command Register ICMO Incoming Message Overload ICMP Internet Control Message Protocol ICMPv6 Internet Control Message Protocol for IPv6 ICMR Input Common Mode Rejection ICMS Integrated Circuit and Management Switch ICN Idle Channel Noise ICn Integrated Communications Network ICN Integrated Community Networks ICN Intercellular Node ICN Interconnecting CCS Network ICN Interconnecting Network ICN Interconnection Network ICN International CUG Number I-CNAB ISDN Calling Name Delivery Blocking I-CNAM ISDN Calling Name Delivery ICNC Input, Command, Not Consistent I-CNIS ISDN Calling Number Identification Services I-CNIS ISDN Calling Number Information Services IC-NNI Inter Carrier Network Node Interface ICNQ InterLATA Call Name Query ICNV Input, Command, Not Valid ICO Current Controlled Oscillator ICO Icon ICO Icon File ICO Independent Company ICO Instant Change Order ICO Intermediate Circular Orbit ICOC Interchangeable Central Office Code ICODE Identification Code ICOM cordless fixed part InterCOM capability ICOM Intercom ICOMP Intel Comparative Microprocessor Performance ICONE Index COmparativ des Normes nationales en Europe ICOT ISDN Conformance Testing ICP IMA Control Protocol ICP In-Circuit Programming ICP Independent Certification Process ICP Independent Content Provider ICP Initial Connection Protocol (ARPANET) ICP Installation Change Procedure ICP Instituto das Comunicacoess de Portugal (P) ICP Integrated Cellular Peripheral ICP Integrated Circuit Piezoelectric (Accelerometers) ICP Intelligent Cellular Peripheral ICP Interexchange Carrier Preselection ICP Internet Cache Protocol ICP Internet Control Pack ICP Internet Control Protocol I-CP ISDN Call Pickup ICPCA International Common Peripheral Controller Array ICPCE International CPCE ICPM Incidental Carrier Phase Modulation ICPTO Intercept Treatment for Origination ICPTT Intercept Treatment for Termination I-CPU ISDN Call Pickup ICR Incremental Composition and Reduction ICR Initial Cell Rate ICR Intelligent Character Recognition ICR International Call Recording ICR Internet Call Routing ICRC ILM Central Resource Controller ICRD International Call Redirection or Deflection ICRD Internetwork Call Redirection or Deflection ICRDP Internetwork Call Redirection and Deflection Prevention ICRL Individual CRL ICRM Integrated Cell-site Remote Multiplexer ICRM Integrated Cellular Remote Module I-CROR ISDN Call Redirection DTE Out of Order ICS ILM Connection Service ICS Implementation Conformance Statement ICS Incoming Call Screening ICS Installation Certification System ICS Integrated Client Setup ICS Integrated Communications System ICS Integrated Computer Solutions ICS Intelligent Cell Site ICS Intelligent Communications Services ICS International Chamber of Shipping ICS Internet Chess Server ICS Inward Call Screening ICS ISN Cabling Structure ICSA International Computer Security Association ICSAPI Internet Connection Services API ICSC Inactive Call Service Component ICSC Interexchange Customer Service Center ICSC Interim Communications Satellite Committee ICSI International Charged Subscriber Identity ICSR IntelliLight Custom SONET Ring ICSS IBM Continuous Speech Series ICSS International Computer Science Series (Addison-Wesley) ICSS Internet Connection Secure Server ICST Institute for Computer Science and Technology (NIST) ICST ISDN Customer Solutions Team ICSTIS Independent Committee for the Supervision of Standards of Telephon e Information Services ICSTTN Conference Publication No. 52 of IEE Conference on Switching Techn iques for Telecommunications Networks (London, 1969) ICSU International Council of Scientific Unions ICSW Inter-CAM Switch ICT In-Circuit Test ICT Incoming Trunk ICT Information and Communications Technologies (EU 4th Framework Prog ramme) ICT International Call Transfer ICTL Instruction MMU/Cache/TIC Control Register ICTS Integrity Check Traffic Simulator ICU Increment Change Unit ICU ISA Configuration Utility ICUG International Closed User Group ICUG International Closed User Group ICUP Individual Circuit Usage and Peg Count ICUPC International Conference on Universal Personal Communications ICW Interrupted ICW Interrupted Continuous Wave ICXPT Incoming Crosspoint ID Identification ID Identifier ID Identity ID IDentity code (generic name for PID, LID) ID IDentity element ID Immediate Dial ID Inside Diameter ID Instruction Decoding and Operand Fetching ID Intercom Dialing ID Interface Data ID Interface Design ID Interfaces Defined ID Interfaces Designed ID Internet Draft ID ISO country code for Republic of Indonesia ID Protocol Identifier ID Task Identification ID U.S. postal code for Idaho I-D Internet Draft IDA Integrated Digital Access IDA Interchange of Data Between Administrations I-DAL ISDN Distinctive Alerting IDAPI Independent Database Application Programming Interface IDAPI Integrated Database Application Programming Interface IDAS Intercept Data Administration System IDB Bitmap ID IDC Cursor ID IDC Incoming Digit Conversion IDC Insulation Displacement Connector IDC Integrated system digital network Data Controller IDC International Data Corporation IDC International Digital Communications IDC Internet Database Connector IDC ISDN Drawer Controller IDCC Integrated Digital Cross Connect IDCC International Data Communications Center IDCC International Data Coordination Centres IDCCC Integrated Decoupling-Capacitor Chip Carrier (VLSI Packaging) IDCI Interim Defined Central Office Interface IDCT Inverse Discrete Cosine Transform IDCU Integrated Digital Carrier Unit IDD Integrated Design and Delivery IDD Interface Design Document IDD International Direct Dialing IDDD International Direct Distance Dialed IDDD International IDDE Integrated Development and Debugging Environment IDDF Intermediate Digital Distribution Frame IDDS International Digital Data Service IDDU Interactive Data Definition Utility IDE End of Identification IDE Integrated Development Environment IDE Integrated Drive Electronics IDE Project File IDEA Information Delivery Electronic Access IDEA Interactive Digital Electronic Appliance IDEA International Data Encryption Algorithm IDEA International Data Exchange Association IDEC ISDN D-Channel Exchange Controller iDEN Integrated Dispatch Enhanced Network IDES Interactive Data Entry System IDF Identifier of Data Field IDF Intermediate Distributing Frame IDF Intermediate Distribution Frame IDF Isolation Detection Function IDF MIDI Instrument Definition file IDFT Inverse Discrete Fourier Transform IDG International Data Group IDGB IDG Books IDI Icon ID IDI Initial Domain Identifier IDIS Interbourse Data Information System IDL Idle IDL Interactive Distance Learning IDL Interchip Digital Link IDL Inter-Digital Link IDL Interface Definition Language IDL Interface Description Language IDLC Integrated Digital Loop Carrier IDLERCV Idle Receive IDLETRMT Idle Transmit IDLT Idle Time IDM Indication Deferral Mechanism IDM Information Dependency Manager IDM Initialization Dependency Manager IDM Integrated Design Methodology (IC Design) IDM Integrated Device Maintenance IDMA Independent Direct Memory Access IDMR Inter-Domain Multicast Routing IDN Integrated Digital Network IDN Integriertes Datennetz (Integrated Data Network) IDN International Data Number IDNC Input, Data, Not Consistent IDND International Do Not Disturb IDNV Input, Data, Not Valid IDNX Integrated Digital Network eXchange IDO Interface Definition Object IDOC Internal Dynamic Overload Control IDP Industrial/Integrated Data Processing IDP Initial Detection Point IDP Initial Domain Part IDP Initial Domain part internet datagram Protocol IDP Inividualized Dialing Plan IDP Integrated Data Processing IDP Integrated Detector-Preamplifier (Opto-Electronics) IDP Intercom Dialing Plan IDP Interdigit Pause IDP Internetwork Datagram Protocol (XNS) IDP Internetwork Diagram Protocol IDP Iterative Development Process IDPL Identifier Pools I-DPN ISDN Directed Call Pickup- Nonbarge-In IDPR Inter-Domain Policy Routing ID-PROM Identity PROM I-DPU ISDN Directed Call Pickup- Barge-In IDR ID Register IDR Identification Request message IDR Integrated Digital Radio IDR Intelligent Disaster Recovery IDR Intermediate Data Rate IDRG Input, Data, Range Error IDRP Inter-Domain Routing Protocol IDS Intruder Detection System IDS ISI Document Solutions IDSE International Data Switching Exchange IDSL ISDN Digital Subscriber Line IDSL ISDN Digital Subscriber Loop IDSM Intergrated Distributed Systems Management IDSS Integrated Document Support System IDST Information et Documentation Scientifique et Technique IDST Integrated Digital Services Terminal IDT Incremental Delivery Technology IDT Integrated Delivery Team IDT Integrated Design and Test IDT Integrated Device Technology IDT Integrated Digital Terminal IDT Interactive Design Tool IDT Interactive Development Tool IDT Interdigit Timing IDT Interdigital Time IDT Interface Development Tool IDT Interrupt Descriptor Table IDTC International Digital Trunk Controller IDTE International Digital Trunk Equipment IDTR Interrupt Descriptor Table Register IDTV Improved Definition TeleVision (HDTV) IDTV Interactive Digital Television IDU Interface Data Unit idv Individuals domain IE Information Element IE Information Extraction ie Internet country code for Ireland IE Internet Explorer IE ISO country code for Ireland IE3 Internet Explorer Version 3.0 IE4 Internet Explorer Version 4.0 IEAE Input, Entity Already Exists IEAK Internet Explorer Administration Kit IEC Integrated Echo Canceller IEC Interexchange Carrier IEC International Electrotechnical Commission IEC ISDN Echo Cancellation Circuit IECEE IEC system for conformity testing to standards for safety of Elect rical Equipment IECFB Internal/External Call Forwarding Busy IECFD Internal/External Call Forwarding Do Not Answer IECQ International Electrotechnical Commission for Quality IEC-Q Quad ISDN Echo Cancellation Circuit IED Interactive Electronic Display IEDB Integrated Engineering Database IEDM International Electron Devices Meeting IEE Institute of Electrical Engineers (UK) IEEE Institute of Electrical and Electronics Engineers (USA) IEEIE Institution of Electronics and Electrical Incorporated Engineers ( UK) IEI Information Element Identifier IEI Information Engineering Institute IEI Internal Event Information IEI Interrupt Enable In IEICE Institute of Electronics, Information, and Communications Engineer s IEM Information Exchange Management IEM Integrated Event Management IEM Integrated Event Manager IEM Interface Electronic Module IEM Interference Electron Microscope IEN Internet Engineering Note IEN Internet Experiment Notes IENE Input, Entity Not Exists IEO Interrupt Enable Out IEPG Internet Engineering and Planning Group IEPM Interface Engine Problem Manager IEPP Interface Engine Pre-Parser IERE Institute of Electronics and Radio Engineers IES Incoming Echo Suppressor IES Information Exchange Services department (ETSI) IES Information Exchange System IESG Internet Engineering Steering Group IETE Institution of Electronic and Telecommunication Engineers IETF Internet Engineering Task Force IETM Interactive Electronic Technical Manual I-ETS Interim European Telecommunications Standard (ETSI) IEU Instruction Execution Unit IEV International Electrotechnical Vocabulary IEW Intelligent Electronic Warfare IEX Information European Exchange If feeding current IF Identification Failure IF Induction Free IF Information Flow IF Instruction Fetching IF Interface IF Intermediate Frequency IF Interrupt-Enable Flag IF/RF Intermediate Frequency/Radio Frequency IFA Interface Adaptor IFA ISDN Facility Agent IFAC International Federation for Automatic Control IFAM Initial and Final Address Message IFAM Initial-Final Address Message IFAM ISDN Feature Availability Matrix IFAN International Federation for the Application of Norms IFAST International Forum on AMPS Standards Technology IFAX International Facsimile Service IFB Invitation For Bid IFC InterFace Clear (IEEE-488 Bus Signal) IFC Internet Foundation Classes IFD Image File Directory IFD Incremental Fix Delivery IFEC IEEE Fall Electronics Conference i-FED Intelligent Field Emission Display IFEI International Fixed Equipment Identity IFF Identification Friend/Foe (Military Avionics) iff If and Only If IFF Interchange File Format IFFM Incoming First Failure to Match IFFT Inverse Fast Fourier Transform IFG Inter-Fabric Group IFG Interframe Gap IFH Image File Header IFI Invoke from Idle IFid Interface Identification I-FIL Interpolation FILter IFIP International Federation for Information Processing IFIPS International Federation of Information Processing Societies IFL Integrated Fuse Logic (Philips/Signetics Inc.) IFL InterFacility Link IFL International Frequency List IFM Incoming Formatter IFM Interface Machine IFMP Ipsilon Flow Management Protocol IFN Indirect Function Table IFOV Instantaneous Field Of View IFP Instruction Fetch Pipeline IFP International Free Phone IFP Interrupted Fluid Process IFPG International Frequency Planning Group IFPH Internetwork Freephone IFPI International Federation of the Phonographic Industry IFRB International Frequency Registration Board (ITU) IFS Information File Separator IFS Installable File System IFS Interframe Space IFS Interframe Spacing IFS Internal File Service IFS International Freephone Service IFS Iterated Function System IFSI International Fixed System Identity IFSM Information Systems Management IFT Incoming File Transfer IFW Information FrameWork IFW Inverted Frame Word IFX I/O and File Executive IG Initial Gap IG Inside BBG IG Interpolation Gain IGA International General Aviation IGBT Insulated Gate Bipolar Transistor (Power Semiconductors) IGC Incremental Garbage Collector IGD Incremental GSF Delivery IGES Initial Graphics Exchange Spec (NIST standard) IGES Initial Graphics Exchange Specification IGES Initial Graphics Exchange Standards IGFET Insulated Gate Field-Effect Transistor IGFET Insulated Gate Field-Effect Transistor IGMP Internet Group Management Potocol IGN IBM Global Network IGO IGES/PDES Organization IGO Impulse Governed Oscillator IGP Interior Gateway Protocol IGRP Interior Gateway Routing Protocol IGS Information Group Separator IGS Interactive Graphic System IGS Internet Go Server IGT Inspettorato Generale delle Telecomunicazioni (I) IGT Insulated Gate Transistor IGW International Gateway IH Intermediate Hub IH Interrupt Handler IHB Inhibit Make Busy IHC ISDN Hold Capability I-HC ISDN Hold Capability IHD Integrated Help Desk IHECD Incoming Half Echo Control Device IHL Internet Header Length IHO Intersystem Handoff IHS Information Handling Services IHUT Incremental High Usage Threshold IHV Independent Hardware Vendor II ANI information digits pair IIA Information Industry Association (USA) IIA Information Interchange Architecture IIASA International Institute for Applied Systems Analysis IIB Internal Information Base IIC IEEE Internet Computing IIC Integrated Interface Circuit IIC International Institute of Communications IICE Internet Interactive Collaboration Environment iid Independently Identically Distributed IID Interface Identifier IIF Interoperability Functionality IIH IS-IS Hello III Institute for Information Industry IIL Integrated Injection Logic IILC Information Industry Liaison Committee IIM Information Interchange Model IIMC ISO Internet Management Coexistence IIME Intranetwork SMDS Mapping Entity IIMUL Integer Immediate Multiply (80x86 inst) IIOP Internet Inter-ORB Protocol IIR Infinite Impulse Response (filter) IIREC Infinite Impulse Response Echo Canceller IIRS Institute for Industrial Research and Standards IIS Indian Institute of Science IIS Internet Information Server IISP Information Infrastructure Standards Panel (ANSI) IISP Input, Invalid Syntax or Punctuation IISP Interim Inter-Switch Protocol IISP Interim Inter-Switch Signaling Protocol IIT Incoming Intercept Trunk IITA Information Infrastructure and Technology Act IITA Input, Invalid TID IITC Internetwork Interoperability Testing Council IITF Information Infrastructure Task Force IITF Information Infrastructure Task Force+B2843 (US) IITP Internetwork-Interoperability Test Plan IIW ISDN Implementors' Workshop IJAP International Japan IJG Independent JPEG Group IJSAC IEEE Journal on Selected Areas in Communications (periodical) IK Interchange Key IK Inverse Kinematics IKBS Intelligent Knowledge-Based System IKE Intermediate System Key Exchange IKM InterKanalModulation IKMP Internet Key Management Protocol IKP Internet Keyed Payment IKTS Intergrated Key Telephone System IKZ Impulskennzeichen (Impulse Signalling System) IKZ50 Impulskennzeichen 50 (Impulse Signalling System No. 50) IL IdLe IL Information Letter IL Insert Line IL Insertion Loss IL International Line IL Interswitch Link IL ISO country code for State of Israel IL U.S. postal code for Illinois il8n Internationalization ILA Iterative Logic Array ILAC International Laboratory Accreditation Conference ILAN Industrial Local Area Network ILAS Intelligent Loop Administration System ILB Inhibit Line Busy ILBM IFF Interleaved Bitmap ILC Inter-Layer Controller ILC ISDN Link Controller ILCM International Line Concentrating Module ILD Implementation Level Design ILD Individual Line Downtime ILD Injection Laser Diode ILD Integrated Large Deviation ILD Interface Level Design ILD ISDN Line Drawer ILDR ISDN Line Drawer for Remotes ILDS Interactive Laser-Disk System ILE In-Line Encryptor ILE Integrated Language Environment ILEC Incumbent Local Exchange Carrier ILF Infra Low Frequency ILGC International Line Group Controller ILGE International Line Group Equipment ILK Incremental Link Status file ILLC Internal Logical Link Connection ILLP Inter Link to Link Protocol ILM Incoming Label Map ILM Industrial Light & Magic ILM Integrated Link Maintenance ILMI Integrated Local Management Interface ILMI Interim Local Management Interface ILMT Insertion Loss Measurement Test ILP Industrial Liaison Program ILP Instruction-Level Parallelism ILP Integer Linear Program ILP IntraLATA Presubscription ILPS Information and Learning, Products and Services ILPT7 CCS7 Integrated Link Protocol Test ILR Independant Local Radio ILR International Line Restriction ILR International Line Restrictions ILR Internetworking Location Register ILR Issues List Report ILS Individual Line Service ILS Input Limiting Scheme ILS Instrument Landing System (Avionics) ILS Inter-LAN Switching ILSP Integrated Listing Services Platform ILSP Interactive Listing Services Peripheral ILTC International Line Trunk Controller ILTMS International Leased Telegraph Message Switching ILU Inter-Language Unification ILU Intermediate Line Unit IM Immediate IM Immediate (Dial) IM Implementation IM In call Modification (supplementary service) IM Increment Manager IM Information Model IM Initial MAC sublayer IM Initialization Mode (HDLC) IM Input Message IM Input Message Manual IM Input Method IM Installation Manual IM Integrated Maintenance IM Intensity Modulated IM IM Interface Module IM Intermodulation IM Inter-Telex SFU Messages IM Inverse Multiplexer IM&M Information Management and Movement IM&M Information Movement and Management IMA Ineffective Machine Attempt IMA Input Message Acknowledgement IMA Integrity Management Agent IMA Interactive Multimedia Association IMA International MIDI Association IMA Inverse Multiplexed ATM IMA Inverse Multiplexing ATM IMA Inverse Mux ATM IMAC Isochronous MAC I-MAC Isochronous MAC IMap Intelligent Mapping Accounting and Provisioning IMAP Internet Mail Access Protocol IMAP Internet Message Access Protocol IMAP4 Internet Mail Access Protocol, Version 4.0 IMAP4 Internet Message Access Protocol, Version 4 IMAS Internetwork Mass Calling IMASS Integrated Multiple Access Switched Services IMASS Intelligent Multiple Access Spectrum Sharing IMB Incoming Message Buffer IMB Inhibit Make Busy IMB Input Message Buffer IMBE Improved Multiband Excitation IMC Integrated Measurement Card IMC Inter-Mate Communication IMC Inter-Module Communication IMC International Maintenance Center IMCC ISDN Management and Coordination Committee IMCI Increment Manager Command Interpreter IMCR Inter-MCU Connection Restored IMD Information Model Details imd Intercepted Message Dispatcher IMD InterModulation Distortion IMDB Integrated Manufacturing Data Base IMDC Intelligent Multiple-Disk Controller IM-DD Intensity-Modulated Direct-Detection IMDP Intermodulation Distortion Products IME Interface Management Entity IMEI International Mobile Equipment Identity IMEI International Mobile station Equipment Identity (GSM) IMET International Metering IMF Integrated Modeling Framework IMFP Inverse Modified FM IMFT ISDN Multifunctional Terminal IMG Image IMG Inline Image (HTML tag) IMH ISDN Method Handler IMHO In my humble opinion IMI Integral Message Indicator IMI Integrated Motions, Inc. IMI International Memories Inc. IMIB Internet Management Information Base IMIB Internet MIB IMIS Integrated Management Information System IMIS Integrated Motorist Information System (DRIVE) IML Incoming Matching Loss IML Initial Microcode Load IML Inter Message Switch Link IML Intermediate Language IMM IMMediately IMM Incoming Mate Mismatch IMM Information Movement and Management IMM Input Method Manager IMM International Maritime Mobile IMM International Mobile Machines Corporation IMMU Instruction Memory Management Unit IMN Intelligent Management Network IMNS IBM Managed Network Services IMNSHO In my not so humble opinion IMO In my opinion IMO International Maritime Organization IMP Implementation IMP Inbound Modem Pooling IMP Integrated Multiprotocol Processor IMP Interface Message Processor (ARPANET) IMP Internet Message Processor IMPATT Impact Ionization Avalanche Transit Time IMPDU Initial MAC PDU IMPDU Initial Medium access control Protocol Data Unit IM-PDU Initial MAC Protocol Data Unit IMPL Internal Mobile Power Level IMR Individual Message Register IMR Interactive Multimedia Retrieval IMR Interface Message Receiver IMR Interrupt Mask Register IMR Maximum Number of Invalid Messages Rejected IMRP Maximum Number of Invalid Messages Rejected for PRI IMRR Isolation-Mode Rejection Ratio IMS If Modified Since IMS Incoming Memory Slot IMS Individual Message Service IMS Information Management System IMS Input/Output Message System IMS Instructional Management System IMS Integrated Management System IMS Interactive Multimedia Services IMS International Magnetospheric Study IMS International Meta Systems IMS Inter-Process Message Switch IMSI Inter MAN System Interface IMSI International Mobile Station Identity IMSI International Mobile Subscriber Identifier IMSI International Mobile Subscriber Identity IMSL Inter Message Switch Link IMSP Internet Message Support Protocol IMSR Improved Modular Square Root IMSRP Intelligent Manufacturing Systems Research Program IMT Installation and Maintenance Terminal IMT Intermachine Trunk IMT Inter-Machine Trunk IMT International Mobile Telecommunications IMT2000 International Mobile Telecommunications 2000 IMT-2000 International Mobile Telecommunications-2000 IMTC International Multimedia Teleconferencing Consortium IMTC International Multimedia Teleconferencing Council IMTI International Mobile Terminal Identity IMTS Improved IMTS Improved Mobile Telephone System IMTSF Interstate Message Telecomunications Service Tariff IMTV Interactive Multimedia Television IMTX International Mobile IMU Instruction Memory Unit IMUG International Motif Users Group IMUI International Mobile User Identity IMUL Signed Multiply (80x86 inst) IMUN International Mobile User Number IMVOD Impulse Video On Demand IN IEEE Network (periodical) in Inch(es) IN Input from Port (80x86 inst) IN Intelligent Network IN Intelligent Node IN International IN International Number IN Interrogating Node IN ISO country code for Republic of India IN U.S. postal code for Indiana IN/1 Intelligent Network 1 IN1 Intelligent Network 1 IN2 Intelligent Network 2 INA Ineffective Network Attempt INA Information Networking Architecture INA Integrated Network Access INA Integrated Network Architecture INACT Inactive INAF Intelligent Network Access Function INAP IN Application Part (of ITU-T Signalling System number 7) INAP IN Application Protocol INAP Intelligent Network Access Point INAP Intelligent Network Access Protocol INAP Intelligent Network Application Part INAP Intelligent Network Application Protocol InATMARP Inverse ATMARP INB Installation Busy INBT ISDN National Billing Team INC Incoming INC INcoming Call INC Increment (80x86 inst) INC Incremental Backup Catalog File INC INCrementer INC Industry Numbering Committee INC International Carrier INC Internet Thruway Network Controller INCC Information Character Collection INCC International Network Controlling Center INCdPA Intelligent Network CdPA INCdPNo Intelligent Network CdPNo INCM Intelligent Network Conceptual Model INCONC INCONClusive INCPT Intercept INCZ INCrement ZAP field control bit Ind Independent IND Index IND Indication Ind Indication IND International Number Dialing IND Interrupt Disable INDB Intelligent Network Data Base INDB Intercept Database INDBMS Intelligent Network Data Base Management System INDC International No Double Connect INDI Informations- und Dialogdienste (Information and Dialog Services) INDIV Individual INDT Integrated Network Design Tools INE Intelligent Network Element INET Institutional Network INF Device Information file INF Information File INF Information Message INF Setup Information file INFO Information INFO Information message INFOL INFormation Oriented Language (Control Data Corporation) INFONET Information Network INFOTEX Information via Telex ING Integrated Ground INH Inhibit INHIP Inhibit In Progress INI Initialization File INI Initialized INIC current Negative Impedance Converter INIC ISDN Network Identification Code INIC ISDN Network Identification Code INIRC International Non-Ionising Radiation Committee INIS Integrated Networks' Integrated Services INIT INitialisation Information Element INIT Initialization INIT Initialize INLP Inactive Network Layer Protocol (early OSI-NL) I-NLSP Integrated Net Layer Security Protocol INM Integrated Network Management INM Integrated Network Monitoring INM Integrated Node Maintenance International Maritime Satellite Organization INMARSAT INternational MARitime SATellite organization Inmarsat International Mobile Satellite Organization (name change from May '96) INMC Integrated Network Management and Control INMC International Network Management Center INMD In-service Non-intrusive Measurement Device INMS Integrated Network Management Services INMS Integrated Network Management System INMS Integrated NMS (ATT) INMSG Incoming Message INN Intelligent Network News (periodical) INN Interconnecting Network Node INN Intermediate Network Node INN Internal Network Number INN InterNetNews INNO Intelligent Network Network Operator INOC Internet Network Operations Center inode Index Node INODE Integrated Node INOS Interactive Network Optimization System (ATT) InP Indium Phosphide INP Initial Period INP Input INP Integrated Node Processor INP Internodal Processor INP Intranode Policing INPA Inside the Base NPA INPA Interchangeable Numbering Plan Area InPh Indium Phosphide INPLANS Integrated Network Planning System INPW Illinois Number Portability Workshop INQ INQuiry INQ Inventory Notification and Query INR Information Request Message INRI Inter-Network Rate Indicator INRIA Institut National De Recherche En Informatique Et En Automatique INRIA The French National Institute for Research in Computer Science and Control INRI-B Inter-Network Rate Indicator, Backward INRI-F Inter-Network Rate Indicator, Forward INRQ Internal Request INS Information Network System INS Input String from Port (80x86 inst) INS Insert INS Inspect INS Integrated Network System INS Intelligent Network Server INS Intelligent Network Services INSB Input String from Port Bytes (80x86 inst) INSD Input String from Port Doublewords (80x86 inst) INSEM INterinstitutional Service for Electronic Mail INSEP Incoming Separations Class INSI Inter-Network Service Identification INSIS INterinstitutional integrated Services Information System INSO Intelligent Network Service Operator INSP Intelligent Network Service Provider INSPECT Inspect INSPECTBL Inspect Billing Records INSS Integrated Network Support System INSS Intelligent Network Service Subscriber IN-SSM IN-Switching State Model INSTAC Information Technology Research and Standardization Center InSv In Service INSW Input String from Port Words (80x86 inst) INT call INTrusion (supplementary service) INT Integer INT Integration INT Intercept INT Intercom INT Internal int International organizations domain INT Interrupt INT TR INTernational TRansit exchange INTA Interrupt Acknowledge INTAGG Internal Aggregate Calls INTAP Interoperability Technology Association for Information Processing INTC Intercept INTC Intercom Calls INTC INTerrupt Confirmation INTCM Intercom Dialing INTCM Intercom Dialing Plan INTCMPM Intercom Dialing for Packet Mode Data INTCMPM Intercom Dialing Plan for Packet-Mode Data INTE INTerrupt Enable(d) INTELSAT International Telecommunications Satellite Consortium INTERL InterLATA Dialing Sequences INTERNIC Internet Network Information Center InterNIC Internet Network Information Center InterOCT Interactive OCTAVE INTFCT Interface Type INTICOM Internal Intercom Calls INTIS International Transport Information System INTL International INTLOCK Interlock INTMI Internal Miscellaneous Connections INTO Interrupt on Overflow (80x86 inst) INTP Interrupt INTPFAC Internal Private Facilities INTR Interrupt Request INTRAL IntraLATA Dialing Sequences INTRALC IntraLATA Competition INTRALCP IntraLATA Competition for PRI INTUG INternational Telecommunications User Group INTUG International Telecommunications Users Group INTUG International Trade and User Groups INU Internetworking Unit INV INValid indication INV Inventory INV Inverter INV Invoke InvARP Inverse ARP INVC Internetwork Virtual Circuits Billing Records INW Inwards INW INWATS INWATS Inward Wide Area Telecommunications Service INWATS Inward Wide Area Telephone Service INWATSDNSFG INWATS Directory Number/SFG Association INWG Intelligent Networks WG (IFIP) INWG International Networks WG INWG InterNetwork Working Group IO Image Orthicon IO Ineffective Other IO Input/Output IO International Organization IO ISO country code for British Indian Ocean Territory I-O Interoffice IOAU Input/Output Audit IOBB Input/Output Broadband IOC Independent Operating Company IOC Information Operations Center IOC Input/Output Channel IOC Input/Output Controller IOC Integrated Optical Circuit IOC International Olympic Committee IOC International Operating Center IOC Inter-Office Communication IOC ISDN Ordering Code IOCS Input/Output Control System IOCTL I/O Control IOD Identified Outward Dialing IOD Input/Output Device IOE Illegal Operation Error IOE Input/Output Equipment IOF Interoffice Facility IOGA I/O Gate IOL Inter Orbit Link (Satellite Telecom.) IOL Inventory On Loan IOM Input/Output Multiplexer IOM ISDN-Oriented Modular IOM ISDN-Oriented Modular-interface IOM2 ISDN-Oriented Modular Rev 2.2 IOMC Interface OMC-NMC or OMC-OMC IOMM Input/Output Message Manual ION Integrated On-Demand Network ION Internetworking Over NBMA IONL Internal Organization of Network Layer (OSI-NL) IOP I/O Processing Element IOP Input/Output Processor IOP International Operator Position IOP Interoperability IOPAC International Cabinet IOPC Input/Output Processor Controller IOPL I/O Privilege Level IOPM International Outside Plant Module IOPS Internet Operators IOPT InterOPerability Testing IOR Indian Ocean Region (INTELSAT) IOR Input Output Register IOR Interoperable Object Reference IOS Input/Output Supervisor IOS Integrated Office Systems IOS Internetwork Operating System IOT In Orbit Test IOT Input/Output Trap IOT Interend Office Trunk IOT Inter-Office Trunk IOTC International Originating Toll Center IOUI Input/Output Utility Interface IOW In other words IP Implementation Profile IP Information Processing IP Information Provision IP Information Publication IP Initial Permutation IP In-Progress IP Instruction Pointer IP Instruction Prefetching IP Intellectual Property IP Intellectual Property Policy and Procedures IP Intelligent Peripheral IP Interexchange Plant IP Interface Point IP Interface Processor IP Interface Profile IP Intermodulation Product IP Internet Protocol IP Internetwork Protocol IP Interpersonal IP Interrupt Process IP ISDN Port IP&SP Information Processing and Storage Platform IP6 Internet Protocol Version 6 IPA Image Power Amplifier IPA Information Processing Architecture IPA Interface and Protocol Adaptor IPA Intermediate Power Amplifier IPA ISDN Performance Analyser IPAD Integrated PAD (OSI-SNA) IPAE Internet Protocol Address Encapsulation IPAP Intelligent Public Access Platform IPARS International Passenger Airline Reservation System IPATM Internet Protocol Over Asynchronous Transfer Mode IPAV Interface Programmable pour Application Vocale IPC IEEE Personal Communications (periodical) IPC Incoming Peg Count IPC Industrial Process Control IPC Input Port Controller IPC Intelligent Peripheral Controller IPC Interactive Personal Computer IPC Interperipheral Connection IPC Inter-Personal Computer IPC Interprocess Communication IPC Interprocess Communications IPC Inter-Process Control IPC Interprocessor Communications IPCDN IP over Cable Data Networks IPCP Internet Protocol Control Protocol IPCP IP Control Protocol IPCU Internet Packet Core Utility IPD Incident Power Density IPD Inductive Potential Divider IPD Installed Product Database IPD ISDN Parameter Group IPDN International Public Data Network IPDS IBM Personal Dictation System IPDS Intelligent Printer Data Stream IPDU Internetwork Protocol Data Unit IPE Image Pac Extension IPE In-Band Parameter Exchange IPE Intelligent Peripheral Equipment IPEC Intelligent Peripheral Equipment Cabinet IPEC Intelligent Peripheral Equipment Column IPEI International Portable Equipment Identity IPES Improved Proposed Encryption Standard IPEX Input, Parameter, Extra IPF Integrated Processor and F-Bus Interface IPG Inter-Packet Gap IPG ISDN Parameter Group IPH Integrated Packet Handler IPI Initial Protocol Identifier IPI Integrated Product Introduction IPI Intelligent Peripheral Interface IPI Interprocessor Interrupt IPI ISDN Preference Indicator IPI ISDN User Part Preference Indicator IPIFR IP Interface over Frame Relay IPIP IP within IP IPIVC IP Interface over VC IPJ Incoming Parallel Junctor IPL Initial Program Load IPL Initial Program Loader IPl Instandhaltungsplatz (Maintenance Station) IPL Interface Processing Level IPL Intermediate Printer Language IPL Interrupt Priority Level ipl Interrupt Priority Level IPLC International Private Leased Circuit IPLL Internet Protocol Local Loop IPLS IntraLATA Private Line Service IPM Impulses Per Minute IPM Inches Per Minute IPM Intelligent Power Management IPM Interpersonal Message IPM Interpersonal Messaging IPM Interruptions Per Minute IPM Management of Information Provision IPM UA Interpersonal Messaging User Agent (MHS) IPMI IP Multicast Initiative IPML Interperipheral Message Link IPMS Input, Parameter, Missing IPMS Interpersonal Messaging Service (MHS) IPNC Input, Parameter, Not Consistent IPNCP Internet Protocol Network Control Protocol IPNG Internet Protocol Next Generation IPng Internet Protocol Next Generation IPNNI Integrated Private Network-to-Network Interface I-PNNI Integrated PNNI IPNS ISDN PABX Networking Specifications IPNS ISDN PBX Networking Specification(s) IPNS ISDN Private Network Specification Forum IPNV Input, Parameter, Not Valid IPOA IP over ATM IPOP Internet Point of Presence IPOT Inductive POTentiometer IPP Independent Payphone Provider IPP Internet Presence Provider IPP Interrupted Poisson Process IPPC Internet Pluribus Packet Core IPPCP IP Payload Compression Protocol IPPV Impulse Pay Per View IPQ Instituto Portugues da Qualidade (P) IPQM In-Process Quality Metrics IPR Initial Period Rate IPR Intellectual Property Rights IPR Interrupt Pending Register IPRA Internet Policy Registration Authority IPRC Intellectual Property Rights Committee (ETSI) IPRM Internetwork Premium Rate IPS Inch Per Second IPS Incoming Packet Size IPS Inferences Per Second IPS Information Processing System IPS Initial Position Seizure IPS Instructions Per Second IPS Integrated Pricing System IPS Interactive Prompting System IPS Interperipheral Communication IPS ISDN Professional Services IPSB Interface Parallel System Bus (Multibus 2) IPSC Integrated Protection Switching Controller IPSEC IP Security Protocols IPSI International Portable Subscriber Identity IPSO Information Society Project Office IPSO IP Security Option IPSP IP Security Protocol IPSS International PSS IPST Interdepartmental Project Scope Team IPT Interactive Protocol Tester IPT Interpulse Time IPT Interrupt Pointer Table IPT ISDN Protocol Testhead IPTC International Press Telecommunications Council IPTO Information Processing Techniques Office IPTS Improved Public Telephone Service IPU Integer Processor Unit IPUI International Portable User Identity IPv4 Internet Protocol Version 4 IPv6 Internet Protocol Version 6 IPX Integrated Packet Exchange IPX Internet Packet Exchange IPX Internet Protocol Exchange IPX Internetwork Packet Exchange IPX Internetwork Protocol Exchange IPX Interwork Packet Exchange (Novell) IPX/SPX Interwork Packet Exchange/Sequenced Packet Exchange (Novell) IPXCP Internetwork Packet Exchange Control Protocol IPXWAN Internet Packet Exchange for Wide-Area Networks IQ In-Phase and Quadrature IQ Intelligence Quotient IQ Inverse Quantizer IQ ISO country code for Republic of Iraq I-Q In-Phase-and-Quadrature IQC Incoming Quality Control IQD Interquartile Difference IQM Intelligent Query Manager IQR Inter Quartile Range (25...75% Range of Histogram) IR Index Register IR Information Rate IR Information Request IR Information Retrieval IR Infrared IR Inquiry Response IR Instruction Register IR Insulation Resistance (Resistance to DC Leakage Current) IR Integration Robust IR Interbay IR Interface Repository IR Intermediate Reach IR Internet Registry IR Internet Router IR Interoffice Receiver IR Interrupt Request IR ISO country code for Islamic Republic of Iran IRA International Reference Alphabet IRAC Interagency Radio Advisory Committee IRAC Interdepartment Radio Advisory Committee IRAM Intelligent RAM IRAPI Intuity Response Application Programming Interface IRAS InfraRed Astronomical Satellite IRB Instruction Reorder Buffer IRB Instrumentation Request Broker IRC Idle Receiver Control IRC Information Resource Center IRC Interference Rejection Combining IRC Intermediate Routing Center IRC International Record Carrier IRC Internet Relay Chat IRCS Inter-Repeater Cable Segment IRD Information Resource Dictionary IRD Integrated Receiver/Descrambler IRD Integrated Receiver-Decoder IRD Interference Reduction Device IRD Interrogation and Response Device IRDA Infrared Data Association IrDA Infrared Data Association IRDO International Research & Development Operations IRDP ICMP Router Discovery Protocol IRDS Information Resource(s) Dictionary System IRE Information Resource Engineering IRE Institute of Radio Engineers IRED Infrared IRED InfraRed Emitting Diode IRF Information Request Failure IRF Interrogation Recurrence Frequency IRG Implicit ReGeneration IRG Internet Resource Guide IRG Inter-Record Gap IRI Incoming Route Information IRI Information Request Indicator IRIG Inter Range Instrumentation Group IRIP Intended Recipient Identity Presentation IRIS Interactive Recorded Information Service IRL In Real Life IRL Information Retrieval Language IRL Inter Repeater Link IrLAP Infrared Link-Access Protocol IRLCM International Remote Line Concentrating Module IRLED Infrared Light Emitting Diode IrLMP Infrared Link Management Protocol IRM Information Request Message IRM Insert/Replace Mode IRM Interrupt Mask Register IRN Immediate Ring Notification IRN Information Resource Network I-RNAM ISDN Redirecting Name Delivery IROH Inhibit Receiver Off Hook IROHAM Inhibit Receiver Off Hook for Analog Member of EKTS IRP I/O Request Packet IRP Interface for Remote Platforms IRP Internal Reference Point IRP International Routing Plan IRPA International Radiation Protection Association IRQ Information Request IRQ Interrupt Request IRR Immediate Reroute IRR Information Request Response IRR Inhibit Ring Reminder IRR Intelligent ReRouting IRR Internet Routing Registries IRS Identification Response message IRS Information Record Separator IRS Information Retrieval System IRS Initial Receive Sequence Number IRS Interface Requirements Specification IRS Intermediate Reference System IRS Internal Revenue Service IRS ITS Radio System IRSF Interface Resource Finder IRSG Internet Research Steering Group IRSP Interface Root Service Proxy IRT Increment Registration Table IRT Institut für Rundfunktechnik GmbH IRT Interrupted Ring Tone IRTF Internet Research Task Force IRTOS I2O Real-Time OS IrTP Infrared Transport Protocol IRTP Internet Reliable Transport Protocol IRU Indefeasible Right of Use IRUR Reset of UPT Registration for Incoming Calls IRV International Reference Version IS Immediate Start IS In Service IS Information Separator IS Information System(s) IS Initialisation Sequence IS Integrated Services IS Interface Specification IS Interference Subtraction IS Interim Specification IS Interim Standard IS Intermediate System IS International Standard IS International System (metric) IS Interstate IS Intraconnect Schematic IS ISDN State IS ISO country code for Republic of Iceland IS STBY In-Service Standby IS1 Information Separator 1 IS2 Information Separator 2 IS3 Information Separator 3 IS4 Information Separator 4 ISA Industry Standard Architecture (IBM) ISA Information Systems Architecture ISA In-Session Activation ISA Instruction Set Architecture ISA Integrated Services Access ISA Integrated Services Architecture ISA Intelligent Services Architecture ISA Interactive Services Association ISA International Service Analysis ISA International Smalltalk Association ISAKMP Internet Security Association and Key Management Protocol ISAM Indexed Sequential Access Method ISAP Instruction Supervisor Area Pointer ISAPI Internet Server Application Programming Interface ISAR Instruction System Address Register ISAS ISDN Smart Attendant Service ISB ISB Individual Station Billing ISB Information Service Brokerage ISB Intelligent Signalling Bus ISBD International Standard Bibliographic Description ISBN International Satellite Business Network ISBN International Standard Book Number ISB-RC Independent SideBand Reduced Carrier ISB-SC Independent SideBand Suppressed Carrier ISC Information Systems Council ISC Installation Service Center ISC Instruction Set Computer ISC Intercompany Services Coordination ISC Intermediate System Confirm ISC International Service Carrier ISC International Services Center ISC International Switching Center I-SCA ISDN Selective Call Acceptance ISCC International Service Coordination Center I-SCF ISDN Selective Call Forwarding ISCII International Standard Code for Information Interchange ISCP Integrated Service Control Point ISCP Integrated Signaling and Control Part ISCP ISDN Signaling Control Part I-SCR ISDN Selective Call Rejection ISD Incoming Service Desk ISD Incremental Service Delivery ISD Independent Segment Decoding ISD Information System Development ISD Instructional Systems Design ISD International Subscriber Dialing ISDB Integrated Services Digital Broadcasting ISDD Incoming Start Delay to Dial ISDD Incoming Start-to-Dial Delay I-SDH Initial Synchronous Digital Hierarchy ISDLC Integrated Services Digital Line Card ISDN Integrated Services Digital Network ISDN/AP ISDN Application Protocol ISDNAP ISDN Application Protocol ISDNBGM ISDN BBG Member ISDNCS ISDN Customer Solutions ISDNFR Integrated Services Digital Network Family of Requirements ISDNI ISDN Class I Equipment ISDNII ISDN Class II Equipment ISDNOE ISDN Office Equipment ISDNP Integrated Services Digital Network Profile ISDNUP ISDN User Part ISDN-UP ISDN User Part ISDO In-Sequence Delivery Option ISDS Integrated Switched Data Service ISDT Integrated Services Digital Terminal ISDX Integrated Services Digital Exchange ISDX Integrated Services Digital eXchange ISE Intelligent Services Environment ISE Interactive Software Engineering ISF International Subscriber Feature ISFET Ion-Sensitive Field Effect Transistor ISG Information Systems Gateway ISG Information Systems Group ISG ISDN Service Group ISG ISDN Signaling Group ISG Isolated System Ground ISG Isolated System Grounding ISH Information Super Highway ISH Intermediate System Hello ISI Industry Support Interface ISI Information Sciences Institute ISI Institute of Scientific Information ISI Instruction Storage Interrupt ISI Integrated Systems Inc. ISI Intelligent Services Interface ISI Intersymbol Interference ISI InterSystem Interface ISIA Isolation Shunt Interface Adapter ISIP International Student Intern Program ISIS Integrated Standardisation Information System ISIS Intermediate System to Intermediate System IS-IS Intermediate System to Intermediate System IS-IS Intermediate System to Intermediate System Protocol ISL Initial System Loader ISL Integrated Services Link ISL Internal Surge Limiter ISL Internetworking Switch Link ISL InterSatellite Link ISLC Information Systems Learning Center ISLC ISDN Line Card I-SLE ISDN Screening List Editing ISLETXT ISDN Screen List Editing Text ISLM Integrated Services Line Module ISLS Interrogation-path SideLobe Suppression ISLU Integrated Services Line Unit ISLUA International SL-1/Meridian 1 Users Association ISM Industrial, Scientific and Medical (equipment) ISM Information Service Management ISM In-Service Measurement ISM Integrated Service Module ISM Integrated Services Model ISM Integrated Synchronous Multiplexer ISM Intelligent Synchronous Multiplexer ISM Internet Service Manager ISM Invocation State Machine ISM ISDN Stanadards Management ISM ISDN State Machine ISM ISDN ISDN Standards Management Special Committee ISMA Inhibit Sense Multiple Access ISMC International Switch Maintenance Center ISMC International Switching Maintenance Center ISME Integrated Services Module Enhanced frame ISMF Internet-Standard Management Framework ISMS Integrated Service Management System ISMX Integral Subrate Multiplexer ISMX Integrated Subrate Multiplexer ISN Information Storage Node ISN Information system Network (ATT) ISN Initial Sequence Number ISN Integrated Services Node ISN Intelligent Services Network ISN Intelligent Services Node ISNAP Intelligent Services Network Application Processor ISNI Intermediate Signaling Network Identification ISNI Intermediate Signaling Network Identifier ISNMS Intelligent Switched Network Management System IS-NNI Inter System Network Node Interface ISO In Search Of ISO Infrared Space Observatory ISO International Organization for Standardization ISOC The Internet Society ISO-CMOS Isolated Fully Recessed Complementary Metal Oxide Semiconductor ISoD Interactive Service on Demand ISODE ISO Development Environment ISOG INTELSAT Signatories and Operators Group I-SOM Intermediate Code-System Object Module ISONET ISO information NETwork ISOO Increment Specific Override Object ISOTAS International Symposium on Object Technologies for Advanced Softwa re ISP Independent Software Vendors ISP Information Service Provision ISP Information Services Provider ISP In-Store Processor ISP Instruction-Set Processor ISP In-System Programming ISP Integrated Services Platform ISP Integrated System Peripheral ISP Intelligent Services Peripheral ISP Interface Service Profile ISP Intermediate Services Part ISP International Signaling Point ISP International Standard Profile(s) ISP International Standardized Profile ISP International Standards Profile (ETSI) ISP Internet Service Provider ISP Interrupt Stack Pointer ISP Intra-Subnetwork Protocol ISP ISDN Service Provisioning ISP ISDN Signaling Preprocessor ISP ISDN Signaling Processor ISPABX Integrated Services Private Automatic Branch Exchange ISPBF Internet Service Provider Business Forum ISPBX Integrated Services Private Branch Exchange iSPC International Signalling Point Code ISPC International Sound Programme Centre ISPCS Integrated System for Public Communication Services ISPF Interactive System Productivity Facility ISPI Intelligent model for System Provisioning Information ISPI Internetwork Service Profile Interrogation ISPICS ISP Implementation Conformance Statement ISPICS ISP Profile ICS ISPM Internetwork Service Profile Modification ISPN Integrated Services Packet Network ISPS International Service Position System ISP-SP International Standards Organization- Still Picture ISPT Instituto Superiore delle Poste e delle Telecomunicaziones ISPT Internetwork Service Profile Transfer ISQL Interactive Structured Query Language ISR Independent Software Release ISR Information Storage and Retrieval ISR Initial Submission Rate ISR Integrated Switch Router ISR INTELSAT System Record ISR Inter System Roaming ISR Intermediate Session Routing ISR Interrupt In-Service Register ISR Interrupt Service Routine ISR Inter-System Routing (NetMaster-Systems Center) ISRB Intelligent Source Routing Bridge ISS Initial Send Sequence Number ISS Integrated Switching System ISS International Small Switch ISS International Switching Symposium ISS Internet Security Systems ISS Inter-Satellite Service ISS Ionica Switch Site ISSB Independent Single SideBand ISSB Intel (Inc.) Serial System Bus (Multibus 2) ISSC Information Systems Solutions Corporation ISSCC International Solid-State Circuits Conference ISSI Individual Short Subscriber Identity (TETRA) ISSI Inter Switching System Interface ISSI Inter-Switching System Interface ISSLL Integrated Services over Specific Link Layers ISSLS International Symposium on Subscriber Loops and Services ISSN Integrated Special Services Network ISSN International Standard Serial Number (Publications) ISSS Interactive Subscriber Service Subsystem ISSU Integrated Services Switching Unit IST Integrated Services Terminal (Voice, Data, Text, Fax, etc) IST Integrated Switching and Transmission ISTB In-Service Trouble ISTb In-Service Trouble ISTC International Satellite Transmission Center ISTC International Switching and Testing Center ISTN Integrated Switching and Transmission Network ISTO Information Systems Technology Office ISTP Integrated Signal Transfer Point ISU Incremental Software Update ISU Independent Signal Unit ISU Initial Signal Unit ISU Integrated Services Unit (ISDN) ISU Iridium Subscriber Unit ISU ISDN Service Unit ISUP Integrated Services User Part (of ITU-T Signalling System number 7 ) ISUP ISDN User Part ISV Independent Software Vendor ISV International Standard Profile(s) ISVM Interswitch Voice Messaging ISW Interswitch Trunk ISW Inverted Synchronization Word ISW Ionica Switch IT Inactivity Test IT Incoming Translation IT Information Technology IT Information Theory IT Information Type IT Insert Tape IT Integration Test IT Integration Tested IT Integration Testing IT Integration Testing Completed IT Intelligent Terminal IT Interexchange Trunk IT Internet Thruway IT InterTandem IT Intertandem Trunk IT Intertoll IT Intertoll Trunk IT ISO country code for Italian Republic (Italy) IT&T Information Technology and Telecommunications IT/PTA Integration Testing Completed/Product Test Acceptance IT/PTA Integrity Testing/Product Test Assessment ITA Independant Television Authority ITA Independent Television Authority ITA Ineffective Traffic Attempt ITA Integrated Trunk Access ITA Interim Type Approval ITA International Telegraph Alphabet ITA1 International Telegraph Alphabet No. 1 ITA2 International Telegraph Alphabet No. 2 ITA3 International Telegraph Alphabet No. 3 ITA4 International Telegraph Alphabet No. 4 ITAA Information Technology of America ITAC International Telecommunications Advisory Committee ITAC International Test Access Controller ITACA IBCN Testing Architecture for Conformance Assessment ITAD Integrated Telephone Answering Device ITAEG IT Advisory Expert Group ITAEGC Information Technology Ad-hoc Expert Group on Certification ITAEGC IT Advisory Expert Group on Certification ITAEGM Information Technology Ad-hoc Expert Group on Manufacturing Automa tion ITAEGM IT Advisory Experts Group on Advanced Manufacturing Technologies ITAEGS Information Technology Ad-hoc Expert Group on Standards ITAEGS IT Advisory Expert Group on Standardization ITAEGT IT Advisory Experts Group for Private Telecommunications Networks ITAEGT IT Advisory Experts Group for private Telecommunications networks ITAEGV Information Technology ad hoc Experts Group on Security ITAP ISDN Test Access Path ITAR International Trafficking in Arms Regulation ITATS International TATS ITB Incoming Trunk Busy ITB Intermediate Text Block-check, ITC IEEE Transactions on Communications (periodical) ITC Inbound Toll Call ITC Incoming Throughput Class ITC Incoming Trunk Characteristics ITC Incoming Trunk Circuit ITC Independent Telephone Company ITC Information Technology Center ITC Information Transfer Capability ITC Input Capture/Input Transition Counter ITC Intermediate Toll Center ITC International Telecommunications Center ITC International Teletraffic Conference ITC International Television Center ITC International Trade Commission ITC International Typeface Corporation ITC Internet Telephony Consortium ITC Interoperability Test Center (private) ITCA International Teleconferencing Association ITCC International Telecommunication Charge Card ITCCC IT Coordination Committee for Certification (CEN) ITCP International Thomson Computer Press I-TCP Indirect Transmission Control Protocol ITCS ISDN Terminal Contention Service ITCT IEEE Transactions on Communication Technology (periodical) ITDC Information Technology Development Corporation ITDM Intelligent Time-Division Multiplexer ITDN Integrated Telephone and Data Network ITE Information Technology Equipment ITE Internal Terminal Emulator ITE International Telephone Exchange ITE International Transmission Exchanges ITESF Internet Traffic Engineering Solutions Forum ITF Information Transport Function ITF Interactive Test Facility ITF InTerFace ITFS Instructional Television- Fixed Service ITG Independent Testing Group ITG Interactive Test Generator ITHI Interactive Terminal Host Interface ITI Idle Trunk Indicator ITI Industrial Technology Initiative ITI Industrial Technology Institute ITI Information Technology Industry Council ITI Interactive Terminal Interface ITI Intermittent Trouble Indication ITIMS In-service Transmission Impairment Measuring System (Telecom) ITLB Instruction Translation Lookaside Buffer ITM Increment Test Manager ITM Inspection du Travail et des Mines (LUX) ITM Integrated Test Master ITM Integrated Transport Management ITM Intelligent Test Bus Master ITM Intelligent Test Master ITM Interactive Test Monitor ITM ISDN Test Module ITM8 International Trunk Module, 8-Wire ITMC International Test and Maintenance Center ITMC International Transmission Maintenance Center ITMS Internet Thruway Management System ITN Independent Telecommunications Network ITN Integrated Test Network ITN Internetwork ITO International Trunk Override ITOC Image Table of Contents ITOC Independent Telephone Operating Company ITOP International Traffic Operator Position ITOPS International Traffic Operator Position System ITOT ISO Transport Service On Top of TCP ITP Integrated Test Platform ITP Integrated Test Position ITP Integration Test Plan ITP InterLATA Toll Presubscription ITP International Thomson Publishing ITPA Independent Telephone Pioneers Association ITPC International Television Program Center ITQS Information Telecommunication Quality System (ETSI) ITR Information Transfer Rate ITR Instrumentation Tape Recorder ITR Integrated Telephone Recorder ITR INTELSAT Test Record ITRC Information Technology Requirements Council ITRLD Increase Power Threshold ITRON Industrial TRON ITRSG Information Technology Resources Support Group ITS Information and Transaction Server ITS Information and Transaction Services ITS Informationstekniska Standardiseringen ITS Insertion Test Signals (Video VITS) ITS Institute for Telecommunication Sciences ITS Integrated Test System ITS Integrated Testing System ITS Integrated Timing Supply ITS Integrated Tool Set (SPAG etc.) ITS Integrated Transmission and Switching ITS Intelligent Transport Systems ITS Intelligent Transportation System ITS Interface, Terminal, and Session ITS International Telecom Symposium ITS Internet Telephony Server (Lucent Technologies) ITS Internet Telephony Services ITS Invitation To Send ITS Ionica Transceiver System ITSC International Telephone Services Center ITSC International Transmission Switching Centre ITSC Interregional Telecommunications Standards Conference ITSCJ Information Technology Standards Commission of Japan ITSE Incoming Trunk Service Evaluation ITSEC Information Technology Security Evaluation Criteria ITSFSD Internet Telephony Services Feature Specification Document ITSI Individual TETRA Subscriber Identity ITSO International Technical Support Organization (IBM) ITSP Intermediate Translation Signalling Point ITSP Internet Telephony Service Provider ITSSP Internet Telephony Server for Service Providers ITSTC Information Technology Steering Committee ITSTC Information Technology STeering Committee ITSU Information Technology Standards Unit ITT International Telephone and Telegraph Company ITU International Telecommunication Union ITU-D International Telecommunication Union- Development Sector ITUG International Tandem Users Group ITU-R International Telecommunication Union- Radiocommunication Scector ITUSA Information Technology Users Association ITUSA Information Technology Users' Standards Association ITU-T International Telecommunication Union- Telecommunication Standardi zation Sector ITU-TSS International Telecommunication Union Technical Standards Sector ITV Incremental Threshold Value ITV Independent Television ITV Industrial Television ITV Instructional Television ITV Interactive Television I-TV Interactive Television ITVT IEEE Transactions on Vehicular Technology (periodical) ITW Internet Thruway IU Integer Unit IU Interface Unit IU Interunit IUAP Instruction User Area pointer IUAP Internet User Account Provider IUC International Unicode Conference IUC Inter-Unit Communication IUF ISDN User Forum IUG Implementation User Guide IUS Information Unit Separator IUT Implementation Under Test IV Initial Vector IV Initialization Variable IV Initialization Vector IV Interactive Video IV&V Independent Verification and Validation IVA Interactive Voice Application IVAN International Value-Added Network IVAP ISDN syntax-based VAP IVC Intelligent Visual Computing IVD Audio Visual Interleaved IVD Integrated Voice and Data IVD Interactive Video Disk IVDLAN Integrated Voice Data LAN (IEEE 802.9) IVDM Integrated Voice/Data Module IVDS Interactive Video and Data Service IVDT Integrated Voice and Data Terminal IVDT Integrated Voice-Data Terminal IVEC Interarea Vector Coordinates IVES Information Vending Encryption System IVHS Intelligent Vehicle Highway System IVI Indeo Video Interactive IVIA International Videotex Industry Association IVLA Four Letter Acronym IVMO Initial Value Managed Object IVMS Integrated Voice Message System IVN Interactive Video Network IVO Internal Verification Office IVOD Interactive Video on Demand IVOT Internetwork Televoting IVP Integrated Voice Protocol IVPN International Virtual Private Network IVR Interactive Voice Response IVS Integrated Voice Service IVS Interactive Video Server IVS Interactive Video Services IVS Interactive Voice Subsystem IVS Interactive Voice System IVSN Interactive Video Services Network IVT Interrupt Vector Table IVT ISDN syntax-based VT IVTC IEEE Vehicular Technology Conference IW Index Word IW Information Warehouse IW Initialisation Word loaded into pseudo-random sequence generators for descrambling IW Insertion Word IW Inside Wire IW Interworking IWA International Webcasting Association IWAC ISDN Wide Area Centrex IWCA Inside Wiring Cable IWCE International Wireless Communications Expo IWCS Integrated Wideband Communications System IWE Interworking Equipment IWF Interworking Function IWM Integrated Woz Machine IWMSC Interworking MSC IWMSC InterWorking MSC IW-MSP Interworking MSP IWP Interim Working Party IWP InterNotes Web Publisher IWPN Interworking with Private Networks IWS Incoming Window Size IWS Intelligent Workstation IWS Intelligent Workstation System IWS Interworking Signaling IWSS Intelligent Workstation System IWT INWATS (800 Service) IWU Interworking Unit IWWS Integrated Wireless/Wireline Services IXC Interexchange Carrier IXI International X.25 Infrastructure/Interconnect (X.25) IXIT Implementation Extra Information for Testing IXT Interaction Crosstalk back to top|0-9|A|B|C|D|E|F|G|H|I - J - K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

J Joint Meeting (ETSI) J Joule J JTM Service J2MV Japanese 2 Mbps Voice JAA Joint Aviation Authorities (an associated body of European Civial Aviation Conference- ECAC) Jacl Java Command Language JAD Joint Application Design JAD Joint Architectural Design JAD Joint Architecture Design JADE Java Application Development Environment JAES Journal of the Audio Engineering Society JAIST Japan Advanced Institute of Science and Technology JAM JYACC Application Manager JAN Joint Army-Navy JANAP Joint Army-Navy-Air Force Publications JANOG Japanese Network Operators Group JAPH Just Another Perl Hacker JAR Java Archive JAR Joint Aviation Requirements JARS Java Applet Rating Service JAV Java Source Code javac Java Compiler JAW Just Ask Why JB Junction Box JBCL JavaBeans Component Library JBE JavaBean Editor JBIG Joint Bi-level Image expert Group JBIG Joint Bilevel Image Group JBPC Java-Based Pipeline Configurator JC Jack Connection JC Joint Committee JC Journalling Controller JCE Java Cryptography Extension JCG Joint Coordination Group (CEN/CENELEC/ETSI) JCL Job Control Language JCT Japanese Cordless Telephone JCT Journal Control Table JCTR Junctor JD Joint Detection JD Julian Day JDAS Joint Design Acceptance Strategy JDB Java Debugger JDBC Java Database Connection JDBC Java Database Connectivity JDC Japanese Digital Cellular JDK Java Developer's Kit JDK Java Development Kit JDN Julian Day Number JDT Joint Design Team JDT Joint Development Team JECF Java Electronic Commerce Framework JEDEC Joint Electronic Devices Engineering Council JEEC Joint ETSI-ECMA Committee JEF Japanese Processing Extended Feature JEIA Japanese Electronics Industry Association JEIDA Japan Electronic Industry Development Association JEM Joint Experts Meeting JEPI Joint Electronic Payment Initiative JES Job Entry Subsystem JESSI Joint European Submicron Silicon Initiative (Eureka) JET Jack Ended Trunk JET Joint venture Evaluation Tool JF Journal File JF Junctor Frame JFC Java Foundation Classes JFDB Job Feature Database JFET Junction Field-Effect Transistor JFIF JPEG File Interchange Format JFMG Joint Frequency Management Group JFRF Japan Frame Relay Forum JFS Journal File System JFS Journaling File System JFS Jumbo Group Frequency Supply JFT Job File Table JFY Justify JGF Junctor Grouping Frame JI Junction Isolation JIA Joint Implementation Agreement JIDM Joint X/Open NMF on Inter-Domain Management JIF Java Intranet Framework JIP Jurisdiction Information Parameter JIS Japan Industrial Standard (JAP) JISC Japan Industrial Standards Committee (JAP) JISC Japanese Industrial Standards Committee JIT Just In Time JITEC Joint Information Technology Experts Committee JIWP Joint Interim Working Party (ITU-R) JLCC J-Lead Chip Carrier JLS Java Language Specification JM ISO country code for Jamaica JMAPI Java Management API JMDR Japan Message Detail Recording JMF Java Media Framework JMG Joint Management Group JMP Jump JMPS Japanese Mobile Phone System JMX Jumbo Group Multiplex JND Just Noticeable Distortion JNDI Java Naming Directory Interface JNET Junctored Network JNI Java Native Interface JNRC Joint Nuclear Research Centre JNT Joint Network Team (UK) JO ISO country code for Hashemite Kingdom of Jordan JOBQ JOB Queue JOHNNIAC JOHN's (von Neumann) Integrator and Automatic Computer JOOP Journal of Object-Oriented Programming JOSS Joint Object Services Submission jp Internet country code for Japan JP ISO country code for Japan JPE JPEG File JPEG ISO/IEC Joint Photographic Experts Group jperl Japanese Perl JPG Joint Presidents Group (CEN/CENELEC/ETSI) JPG JPEG File JPI Java Platform Interface JPL Jet Propulsion Laboratory (Pasadena California USA) JPN7 Japan Public Network 7 JQC Journalling Queue Controller JRAD Joint/Rapid Application Development JRC Joint Radio Committee (UK) JRE Java Runtime Environment JRET Joint Requirements Engineering Team JRG Joint Rapporteur Group (ETSI) JRG Joint Research Group JRI Java Runtime Interface JRI Joint Research Institute JRMP Java Remote Method Protocol JRTIC Joint Radiophone Technical Interfaces Group JS JavaScript JSA Japanese Standards Association JSAC IEEE Journal on Selected Areas in Communications (periodical) JSAPI Java Speech API JSB Jump To Subroutine JSC Joint Scientific Committee JSD Jackson Structured Development JSF Junctor Switch Frame JSM Job Service Model JSP Jackson Structured Programming JSP Job Service Provider JSR Jump to Subroutine JSSST Japan Society for Software Science and Technology JST Japan Standard Time JSU Job Service User JTAC Joint Technical Advisory Committee JTACS Japan TACS JTACS Japanese TACS JTAG Joint Test Access Group JTAM Job Transfer And Manipulation JTAPI Java Telephony API JTC Joint Technical Committee (EBU/ETSI) JTC Joint Technical Committee (IEC, ISO) JTC1 Joint Technical Committee 1 JTCG Joint Technical Co-ordination Group JTCI Joint Technical Committee on Information Technology JTEC Japan Telecommunications Engineering and Consultancy JTF Joint Task Force JTM Job Transfer and Manipulation JTPC Joint Technical Programming Committee (IEC) JTPL Jini Technology Public License JTR Japan Telecommunications Review (periodical) JTS JNET Transport System JTS Junctor Transport System JTS/BFP Junctor Transport System/Basic Format Packetization JTS-BFP Junctor Transport System-Basic Format Packetization JUG Java Users Group JUGFET Junction Field-Effect Transistor JUGHEAD Jonzy's Universal Gopher Hierarchy Excavation and Display JV Joint Venture JVC Japan Victor Company JVC Java Foundation Classes JVC Juggling Virtual Connection JVM Java Virtual Machine JWG Joint Working Group JWI Jumper Wire Interface JWP Joint Working Party back to top|0-9|A|B|C|D|E|F|G|H|I|J - K - L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

K Authentication Key K Constraint Length of the Convolutional Code K Kelvin K Key K Kilo (1000 or 1024) k kilo (1000) k Kommende (Incoming) K&R Kernighan and Ritchie KAK Key-Auto-Key KALM Keyed Association Link Manager KAM Keyboard Action Mode KAS Kiva Administrative Server KAU Keystation Adapter Unit KB Keyboard kb Kilobit KB KiloByte (1024 Bytes) KB Knowledge Base KB Knowledge-Based KBD Keyboard KBD Keyboard Dialing KBD Keyboard Input (HTML tag) KBHCA Thousand Busy Hour Call Attempts Kbit/s Kilobits Per Second kbps Kilobits Per Second KBps Kilobytes Per Second Kbs Kilobits Per Second KBS Knowledge Based System KBS Korea Bureau of Standards kbyte Kilobyte Kc ciphering Key KCMS Kodak Color Management System KCP Keyset Call Processing kcps kilocycles per second (obsolete, now Hz) KCR Key Call Receiver kcs Kilocycles per Second KCS Kiva C++ Server KDC Key Distribution Center KDD Kermit Dialing Directory KDD Kokusai Denshin Denwa Co. Ltd. (Japan) KDE KeyboarD Entry KDE Kommunikationsdatenerfassung (Call Detail Recording) KDS Keyboard Display Station KDS Kommunikationsdatensatz (Call Detail Record) KDT Keyboard Display Terminal KDU Kommunikationsdatenubertragung (operations system for the transfer of billing information) KDV Kommunikationsdatennachverarbeitung (Billing Post-Processor ) (Hos t) KE ISO country code for Republic of Kenya KE KErnel KE Key Equipment KE Key Escrow KEA Key Exchange Algorithm KEC Key Escrow Component KEES Key Escrow Encryption System KEK Key Encrypting Key KEMA N.V. tot Keuring van Electrotechnische Materialen (NL) KES Key Escrow System KETC Kelly Education and Training Center KEV Kilo Electron-Volt KEY personal KEY number KEY HOLD Key Hold message KEY REL Key Release message KEY SETUP Key Setup message KEY SETUP ACK Key Setup Acknowledge message KG ISO country code for Kyrgyz Republic (Kyrgyzstan) kg Kilograms KGD Known Good Die KGU Known Good Unit KH ISO country code for Kingdom of Cambodia (formerly Kampuchea) kHz kiloHertz Ki individual subscriber authentication Key KI ISO country code for Kiribati KID key_instance_data KIF Knowledge Interchange Facility KIF Knowledge Interchange Format KIP Kinetics Internet Protocol KIPS Kilo Instructions Per Second KIPS Thousands of Instructions per Second KIS Knowbot Information Service KIS Kodak Imaging Services KISS Keep It Simple, Stupid KISS Keep It Sweet and Simple KISS Kristen Information and Software Services KJS Kiva Java Server KL Key Lever KL Kilo Lines KLIC Key-Letter In Context KLM Kernel Lock Manager KLOC Kilo Lines Of Code KLOEC Kilo Lines of Executable Code KM ISO country code for Federal and Islamic Republic of the Comoros KM Key Mapping km Kilometer KM128X75 K Mod-128 Parameter for X.75 KM8X75 K Mod-8 Parameter for X.75 KMA Kernel Memory Allocator kmc Kilomegacycles KMS Knowledge Management System (AI) KN ISO country code for Saint Kitts and Nevis KNADR Koppelnetzaddresse (Switching Network Address) (Line Equipment Num ber) KNCSL Thousand Non-Commentary Source Lines KOB Kernel Object Browser kohm Kilohm KONTES Kundenorientierte Neugestaltung der Teilnehmerdienste mit Einsatz von DV-Systemnen (Subscriber Service Management Applic ation) KOPS Kilo-Operation Per Second KP Beginning of Pulsing Signal KP ISO country code for Democratic People's Republic of Korea (North Korea) KP Key Pulse signal KP Keypad KP KeyPad information element KP Keypulse KPA Key Pulse Adapter KPD Keypad Digits KPD Known Product Defect KPF Key Pulse on Front KPIC Key-Phrase In Context kpsi Kilopounds Per Square Inch KQML Knowledge Query and Manipulation Language KR ISO country code for Republic of Korea (South Korea) KR Knowledge Representation KRB Kerberos KRITIC Knowledge Representation and Inference Techniques in Industrial Co ntrol (Esprit) KRS Knowledge Retrieval System KS Authentication Session Key KS Kapsch and Schrack KS Kearney Specification KS Key Set KS Korean Standard KS PP authentication Session Key KS U.S. postal code for Kansas KS' FP authentication Session Key KSAM Keyed Sequential Access Method KSC Knowledge Systems Corporation KSD Kermit Services Directory KSDS Key Sequenced Data Set KSE Keyboard Source Entry Kset Key Set KSG Key Stream Generator KSH Key Short Hunt KSH Keyset Short Hunt KSH Korn Shell ksh Korn Shell KSI Korea Standards Institute KSLOC Kilo Source Lines of Code KSMOH Key Set Music On Hold KSPS Kilo Samples Per Second KSR Keyboard Send/Receive KSS Key Stream Segment KSU Key Service Unit KSU Key System Unit KT Keying Trunk KT Korea Telecom KTA Key Telephone Adapter KTH Swedish Royal Institute of Technology KTILE Development Centre for Telecommunications (GR) KTN Kernel Transport Network kTN kernel Transport Network KTRK Killer Trunk KTS Key Telephone Set KTS Key Telephone System KTU Key Telephone Unit kV Kilovolt(s) kVA Kilovolt-Amperes KVM Keyboard, Video, Mouse (generally KVM Switch) KVSt Knotenvermittlungsstelle (Trunk Tandem Switching Exchange) (regional exchange, 3rd level of transit/long distance network) KW ISO country code for State of Kuwait KW KiloWatt KW Kilowatt(s) KW KiloWord KWIC Key-Word In Context KWIT Key-Word In Title KXS Kiva Executive Server KY ISO country code for Cayman Islands KY U.S. postal code for Kentucky KZ ISO country code for Kazakhstan back to top|0-9|A|B|C|D|E|F|G|H|I|J|K - L - M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

L DC Balancing Bit L Inductance L Length L Line L Link Layer L Load current L Locator l LONG (long) L Long Duration L Low l Low Frequency L Radiance L.O. Local Oscillator L/A Loop Around L0 level zero L1 Layer 1 L1 Level 1 L1 A/D Layer 1 Activation/Deactivation L1A/D Layer 1 Activation/Deactivation L1ACT Layer 1 Activated L1AD Layer 1 Activation/Deactivation L1DEACT Layer 1 Deactivated L1GW Level 1 Gateway L1TH Layer 1 Thresholds L1THGP Layer 1 Performance Monitoring Thresholds Group Identifier L2 Layer 2 L2 Level 2 L2 Secondary Cache L2F Layer-2 Forwarding L2F Level 2 Forward L2FP Layer 2 Forwarding Protocol L2GW Level 2 Gateway L2IF Layer 2 Interface L2ML Layer 2 Management Link L2ML Layer 2 Management Link L2R Layer 2 Relay L2R BOP L2R Bit Oriented Protocol L2R COP L2R Character Oriented Protocol L2RCOP L2R Character-Oriented Protocol L2TP Layer 2 Tunneling Protocol L2TP Level 2 Tunneling Protocol L3 Layer 3 L3 Level 3 L3_end Indicates Last Packet of a layer 3 Message L3TV Low Level Light Television L4 Layer 4 L4 Level 4 LA ISO country code for Lao People's Democratic Republic (Laos) LA Light Armor LA Line Adapter LA Link Adaptation LA Listed Address LA Load Accepted LA Load Available LA Local Agent LA Local Authority LA Location Area LA Logic Analyser LA Logical Address La Tip Wire LA U.S. postal code for Louisiana LA5 International Alphabet No. 5 LAC L2TP Access Concentrator LAC Link Admission Control LAC Location Area Code LAD digitaler Leitungsanschluss (Digital Line Access Module) LADDR Layered Device Driver Architecture LADS Labor Distribution System LADS Local Area Data Set LADT Local Area Data Transport LAF License Authorization Form LAF Load Accepted Form LAI Location Area Identification LAI Location Area Identity LAIC Loopback Access Interface Card LAIS Line Alarm Indication Signal LALSD Language for Automated Logic and System Design LAM Land/Aeronautical/Maritime LAM Lobe Attachment Module LAM Location Accuracy Matrix LAMA Local Automatic Message Accounting LAMP Local Area Multiprocessor LAN Local Area Network LANA LAN Adapter LANCE Local Area Network Controller LANCOMM LAN Communications LANDP LAN Distributed Platform LANE LAN Emulation LAP Line Access Point LAP Line Access Protocol LAP Link Access Procedure LAP Link Access Protocol LAP Local Access Provider LAPB Link Access Procedure- Balanced LAPB Link Access Protocol Balanced LAP-B Link Access Procedure Balanced LAPC A DLC protocol LAPD Link Access Procedure for the D-Channel LAPD Link Access Procedure on the D-channel LAPD Link Access Protocol Digital LAPD Link Access Protocol for the D-Channel LAP-D Link Access Procedures for the D-Channel LAPDm Link Access Protocol Digital Mobile LAPDm Link Access Protocol on the Dm channel LAP-Dm Link Access Protocol on the Dm channel LAPF Link Access Procedure for Frame Mode Bearer Services LAPF Link Access Procedures for Frame Mode Bearer Services LAPF Link Access Protocol for Frame Relay LAPG Link Access Procedure on the G-Channel LAPM Link Access Procedure for LAPM Link Access Procedure-Modem LAP-M Link Access Procedure-Modem LAPR Link Access Protocol for Radio LAPV5 Link Access Protocol for the V5 Interface LAPV5-DL LAPV5 Data Link Sublayer LAPV5-EF LAPV5 Envelope Function Sublayer LAR Load Access Rights LAR Load Access Rights LAR Local and Remote LAR Logarithmic Area Ratio LAR Lot Acceptance Rate LARP Local And Remote Printing LAS Local Analog Switch LAS Logic Analysis System LAS Low-Altitude Satellite LASCR Light-Activated Silicon Controlled Rectifier LASD Large Area Screen Display LASER Light Amplification by Stimulated Emission of Radiation LASS Local Alarm Scanning System LASS Local Area Signaling Services LASS Local Area Signaling System LASSO LAser Synchronisation from Stationary Orbit LAT Local Access Terminal LAT Local Area Terminal Lat Local Area Transport LAT Local Area Transport (DECnet) LAT Long-Term Architecture (ITU) LATA Local Access and Transport Area (US) LATA Local Area Transport Arrangement LATD LATA Digits LATID Large Angle Tilted Implant Drain LATIS Loop Activity Tracking Information System LATS Latin American Telecommunications Summit LATS Loop Access Test System LAU Line Adapter Unit LAURA Local Area network User Radio Access (ESPRIT) LAVC Local Area Vax Cluster (Network, Digital Equipment Corporation) LAWN Local Area LayMan Layered Development Manager LayMan Layered Manager LB ISO country code for Lebanese Republic (Lebanon) LB Leaky Bucket LB List Box LB Local Battery LB Local Bus LB Loop Back LB Loopback LB Low Band LB Postal code for Labrador Lb Ring Wire LBA Logical Block Address LBA Logical Block Addressing LBA Lower Boundary Address LBAND Local Band LBC LAN Buffer Controller LBC Logical Bearer Channel LBCST Local Broadcast LBE Load Build Element LBE Loopback Enable LBJ Light Bulb Joke LBN Line Balancing Network LBN List Box Notification LBN Logical Bearer Number LBO Line Built-Out (Network) LBOT Logical Beginning of Tape LBR Large Business Remote LBR Laser Beam Recording LBR Low Bit Rate LBRDC Low Bit Rate Data Communications LBRM Log-Based Reliable Multicast LBRV Low Bit Rate Voice LBS List Box Style LBS Load Balance System LBT Listen Before Talk (CSMA) LBT Listen Before Transmit LBT CBS Local-Battery Talking, Common Battery Signaling LBUS Line Card Bus LBX Low Bandwidth X LC Inductance/Capacitance LC ISO country code for Saint Lucia LC Last Card LC Leaving Conference LC Line Card LC Line Circuit LC Line Concentrator LC Link Connection LC Link Control LC Link Controller LC LC Local C-plane LC Location Counter LC Locator Collection LC Logical Channel LC Lower Case LCA Life Cycle Assessment LCA Line Concentrating Array LCA Local Calling Area LCA Local Carrier Agent LCA Logic Cell Array (Monolithic Memories Inc.) LCA Logical Channel Assignment LCA Lotus Communications Architecture LCAD Logical Channel Assignment for D-Channel LCAI ISDN Line Concentrating Array LCAMOS Loop Cable Maintenance Operations System LCANUPB Logical Channel Assignment for Nailed-Up B-Channels LCAODP Logical Channel Assignment for On-Demand B-Channels LCAP Local Craftsperson Access Panel LCC Large Cluster Controller LCC Leadless Chip Carrier LCC Life Cycle Cost LCC Line Card Carrier LCC Line Circuit Card LCC Line Class Code LCC Line Control Card LCC Link Control Card LCC Live-Cycle Costs LCC Local Calls Cleared (CSMA) LCC Logical Conference Circuit LCC Longitudinal Check Character LCCC Leadless Ceramic Chip Carrier LCCH Leash Control Channel LCCM LANClient Control Manager LCCT Logical Conference Circuit LCD Least Common Denominator LCD Line Card LCD Line Card Drawer LCD Line Concentrating Device LCD Liquid Crystal Display LCD Local Calls Delayed (CSMA) LCD Loss of Cell Delineation LCD Lost Calls Delayed LCD Lowest Common Denominator LCDR Local Call Detail Recording LCE Line Concentrating Equipment LCE Linear Cable Engine LCE Link Control Entity LCEI ISDN Line Concentrating Equipment LCF Line Control Feature LCF Load Content File LCF Location Confirm LCF Location Confirmation LCF Log Control Function LCFC Load Content File Consolidation LCFS Last-Come First-Served LCFSPR Last-Come First Served Preemptive LCGA Local Carrier Group Alarm LCGI Local Common Gateway Interface LCGN Logical Channel Group Number LCh Logical Channel LCI Local Craft Interface LCI Logical Channel Identifier LCID Locale Identifier LCID Logical Channel Identifier LCIE Laboratoire Central des Industries Electriques (F) LCIS Local Configuration Information Server LCK Lock File LCL Longitudinal Conversion Loss LCM LANDesk Configuration Manager LCM Least Common Multiple LCM Limited Conversation Mode LCM Line Card Multiplexer LCM Line Concentrating Module LCM Line Concentration Module LCM Link Continuity Monitoring LCM Liquid Crystal Module LCM Local Customer Manager LCM Logical Control Module LCM Loopback Coupler Module LCM Lowest Common Multiple LCME Enhanced ISDN Line Concentrating Module LCMI ISDN Line Concentrating Module LCMIP Lightweight CMIP LCMP Line Concentrating Module Processor LCN Local Communication Network LCN Local Communications Network LCN Logical Channel Number LCN Logical Connection Number LCN Loosely Coupled Network (CDC) LCO Cellular Option LCO Line Cutoff LCO Local Coin Overtime LCo Logical Connection LCOM LIU Communication LCOS Liquid Crystal On Silicon LCP Least Congested Path LCP Link Control Procedure LCP Link Control Protocol LCP Local Charging Prevention LCP Local Control Point LCR Least Cost Routing LCR Line Concentration Ratio LCR Locating Channel Receiver LCR Lowest Cost Routing LCRF Local Connection Related Function(s) LCS Large Capacity Storage LCS Line Connection Subsystem LCS Location Services LCS Longest Common Subsequence LCS Lotus Communications Server LCSE Logical Channel Signalling Entity LCSMA-CD Local CSMA-CD LCSP Limited Cluster Server Process LCSU Local Concentrator Switching Unit LCT Laboratoire Central de Telecommunications LCT Last Compliance Time LCT Last Conformance Time LCTC Liquid Crystal Timing Controller LCU Last Cluster Used LCU Line Concentrating Unit LCU Link Control Unit LCUT Line Card Under Test LCV Line Code Violation LCV Line Coding Violation(s) LD Laser Diode LD Laser Disk LD Line Diagram LD Line Drawer LD Linker Directive LD Loaded LD Location Directory LD Logical Drawer LD Long Distance LD Long Duration LD Loop Detect LD Loop Disconnect LD Low Density LDA Logical Device Address LDAE Long Distance Alert Enhancement LDAP Lightweight Directory Access Protocol LDB Local Database LDB Location Database LDC Less Developed Country LDC Line Drawer Controller LDC Linear Divider and Combiner LDC Long Distance Carrier LDC Long Duration Call LDCELP Low Delay Codebook Excited Linear Prediction LD-CELP Low-Delay Code Excited Linear Prediction LDCM LANDesk Client Manager LDD Lightly Doped Drain LDD Linear Delay Distortion LDDCDDN LAPD D-Channel Default DN LDDCDN LAPD D-Channel Directory Number List LDE Long Duration Events LDF Linear Display File LDI Long Distance Indicator LDIF LDAP Data Interchange Format LDM Legacy Data Module LDM Limited Distance Modem LDM Linear Delta Modulation LDM Logical Data Model LDM Logical Device Manager LDMS LANDesk Management Suite LDN Listed Directory Number LDN Local Directory Number LDN Local Distinguished Name LDP Label Distribution Protocol LDP Linux Documentation Project LDR Light-Dependent Resistor LDR Line Driver-Receiver LDR Local Distribution Radio (Micro-Wave Telecom.) LDR Local Dump and Restore LDR Local Dynamic Routing LDRI Low Data Rate Input LDS Landesamt fur Datenverarbeitung und Statistik LDS Lightguide Distribution System LDS Local Digital Switch LDS Local Distribution System LDS Logic Design System LDS Logical Data Set LDS Long Distance Signal LDS Lower Data Strobe LDSH Logical Data Set Header LDST Logical Data Set Trailer LDSU Local Digital Service Unit LDT Line Appearance on a Digital Trunk LDT Link Diversion Transactor LDT Local Descriptor Table LDT Location Determination Technology LDTA Long Distance Telecommunications Administration LDTA Long Distance Telephone Administration LDTR Local Descriptor Table Register LDTS Low Density Telephony Service LDTV Low-Definition Television LDU Line Drawer Unit LDU Long Distance Usage LDU Low Speed Data Unit LDX Long Distance Xerography LE LAN Emulation LE Late Entry (TETRA) LE Less Than or Equal To LE Line Equipment LE Linear Executable LE Link Engine LE Linkage Editor LE Little-Endian LE Local Echo LE Local Exchange LE Loop Extender LE1 Link Engine, Type 1 LEA LATA Equal Access LEA Line Extender Amplifier LEAF Law Enforcement Access Field LE-ARP LAN Emulation Address Resolution Protocol LEAS LATA Equal Access System LEC LAN Emulation Client LEC Light Energy Converter LEC Liquid Encapsulated Czochralski LEC Local Exchange Carrier LECID LAN Emulation Client Identifier LECS LAN Emulation Configuration Server LED Light Emitting Diode LED Light Emitting Diode LEDA Light Emitting Diode Array LEM Logical End of Media LEMP Lightning ElectroMagnetic Pulse LEN Length LEN Line Equipment Number LEN Local Exchange Network LEN Local Exchange Node LEN Logical Entity Number LEN Low-Entry Networking LEN Low-Entry Networking (SNA) LENNI LAN Emulation Network-to-Network Interface LEO Local End Office LEO Low-Earth-Orbit (satellites) LEOS Lasers and Electro-Optic Society LEOS Low Earth Orbit Satellite LEOSAT Low-Earth-Orbit Communications Satellite LEP Large Electron Positron LEP Light-Emitting Polymer LEQ Link Emission Queuing LER Label Edge Router LERG Local Exchange Routing Guide LES LAN Emulation Server LES Land Earth Station LES Line Errored Second(s) LES Load ES Register (80x86 inst) LET Line Equipment Transfer LET Link Establishment Time LETB Local Exchange Test Bed LETI Laboratoire d'Electronique et des Techniques de l'Information (F) LEV Loader/Editor/Verifier LEx Link Engine, Type x LEX Local Exchange Lf feeding inductor LF Line Feed (ASCII Character) LF Line Filter LF Line Finder LF List File LF Logical Facility LF Low Float LF Low Frequency (30...300 kiloHertz) LFA Line Feature Action LFA Loss of Frame Alignment LFACS Loop Facility Assignment and Control System LFAQ Less Frequently Asked Questions LFB Look for Busy LFB Look-Ahead for Busy LFC Link FBUS Controller LFC Local Functional Capability(ies) LFD Line Fault Detector LFE Log Front End LFN Long Fat Network LFN Long Filename LFO Low Frequency Operation LFPM Linear Feet Per Minute LFS Link Fault Sectionalization LFS Log File Service LFS Logical File System LFS Log-Structured File System LFSE Linear Fractional Spaced Equalization LFSR Linear Feedback Shift Register LFU Least Frequently Used LFU Link Forced Uninhibit message LG DDOC Section: Log Reports LG LetterGram LG Link Group LG Logic Ground LGA Laser Gate Array LGA Leadless Grid Array LGA Line Group Array LGAI ISDN Line Group Array LGC Line Group Controller LGCI ISDN Line Group Controller LGCO Offshore Line Group Controller LGCOI ISDN Offshore Line Group Controller LGCOi ISDN Offshore Line Group Controller LGE Line Group Equipment LGEI ISDN Line Group Controller Equipment LGN Logical Group Node LGP Link General Processor LGPL Library General Public License LH Line Hunting LH Link Handler LH Link Header (SNA) LH Local Host LH Long Haul LHB Limited-Hard-Blocking LHC Left-Hand Circular Polarization LHP Local Host Processor LHS Left Hand Side LHT Long Holding Time LHT Long-Haul Transoceanic LI ISO country code for Principality of Leichtenstein LI Leap Indicator LI Length Indication LI Length Indicator LI LIaison li Line LI Line Identity LI Line Interface LI Lines View LI Link Interface LI List Item (HTML tag) LI Loader Information LI Local Interface LI Logical Indications LIA Link Inhibit Acknowledgment message LIB Label Information Base LIB Library lib Library LIB Library File LIB Object Code Library LIB Run-Time Library LIC Line Interface Card LIC Linear Integrated Circuit LIC Link Identification Code LIC Links Command LIC Lowest Incoming Channel LID Link ID LID Link IDentification code LID Link Inhibit Denied message LIDA Load- and Interference-Based Demand Assignment LIDAR LIght Detection And Ranging LIDB Line Information Database LIDF Line Intermediate Distribution Frame LIDT Load Interrupt Descriptor Table Register (80x86 inst) LIF Layer Interface LIF Length Indicator Field LIF Lifetime Television LIF Logical Interchange Format LIF Logical Interface LIF Logical Interface Transactor LIF Low-Insertion Force (IC-Sockets) LIFE-911 Location Information for Enhanced 911 LIFO Last-In First-Out LIFO Last-In, First-Out LIH Last Image Hold (Video) LII Location Independent Invocation LIJ Leaf Initiated Join LIJP Leaf Initiated Joint Parameter LILO Last-In, Last-Out LILO Linux Loader LILO Look-In/Look-Out LIM (Power) Line Isolation Monitor LIM Call Limiter LIM Language Interface Module (HLLAPI) LIM Line Interface Module LIM Load Information Manager LIM Lotus/Intel/Microsoft LIMDO Light Intensity Modulation-Direct Overwrite LIMS Lotus- Intel- Microsoft LIN Line Index Number LIN Link Inhibit message LIN Listing Index Number LINC Legacy Internetworking Capability LINC Localized Intelligent Network Control LINC Long Term Intelligent Network Controller LINCMOS LINear Complementary Metal Oxide Semiconductor LINE Line Maintenance LINFO Linker Information LInh Local Inhibit LINK Encoded Link Register LINPACK LINear equations software PACKage (test for PC) LION Line Information for Open Networks LION Listing Information for the Open Network LION Local Integrated Optical Network LION LPS Line Information for Open Networks- Line Profiling System LIP Large Internetwork Packet lip Local Interested Party LIPC Long Interprocessor Communication LIPS Library of Image Processing Software LIPS Logical Inferences Per Second LIS Library and Information Science LIS Line Interface Shelf LIS Logical IP Subnetwork LIS Lot Identification System LISA Large Installations Systems Administration LISA Local Integrated Software Architecture LISA Localization Industry Standard Association LISB Lithium Ion Storage Battery LISN Line Impedance Stabilization Network LISP Limited Instructions Set Processor LISP List Processing LISP LISt Processing language LISU Local Integrated Switching Unit LIT Line Insulation Test LIT Link Local Inhibit Test message LIT Literal Text (HTML tag) LIT Local Intelligent Terminal LIU LAN Interface Unit LIU Link Interface Unit LIU7 CCS7 Link Interface Unit LIU-COM Link Interface Unit- Communication LIV Link Integrity Verification LIW Long Instruction Word LJ LaserJet LK ISO country code for Democratic Socialist Republic of Sri Lanka LK Line Key LK Link LK Looking for Party LKDO Locked Out LKED LinKage EDitor LL Land-Line LL Leased Line LL Line Leg LL Link Layer LL Link Level LL Local Loopback LL Long Lines LL Lower Layer LL Low-Low LL Low-Low Algorithm LL Lunchtime Learning LLA Link Level Access LLA Logical Layered Architecture LLA Low Level Access LLAR Local Line Automatic Routing LLAR Local Loop Access Ring LLB Latching Loop Back LLB Latching Loopback LLB Line Loopback LLB Local Loopback LLBE Latching Loopback Enabled LLC Limited Liability Company LLC Line Load Control LLC Link Layer Control LLC Logical Link Connection LLC Logical Link Control LLC Low Layer Capabilities LLC Low Layer Compatibility LLC Lower Layer Compatibility LLCDBL1 Low-Layer Compatibility Information Delivery Billing Records (Intr anetwork) LLCDBL1P Low-Layer Compatibility Information Delivery Billing Records (Intr anetwork) for PRI LLCDBL2 Low-Layer Compatibility Information Delivery Billing Records (Inte rnetwork) LLCDBL2P Low-Layer Compatibility Information Delivery Billing Records (Inte rnetwork) for PRI LLCDU LLC Data Unit LLCIT Low Layer Compatibility Information Transfer LLCP Link Layer Core Parameters LLCT Local Line Connected Terminal (TETRA) LLD Logical Line Drawer LLD Low-Level Driver LLDN Local Line Distribution Network LLDR Low-Level Design Review LLE Large Local Exchange LLE Long Line Equipment LLF Line Link Frame LLF Low Layer Function(s) LLF Low-Level Format LLF Low-Level Formatting LLFSQ Link Layer Frame Sequencing, LAPB LLFSQX75 Link Layer Frame Sequencing for X.75 LLI Link Local Inhibit Signal LLI Logical Link Identifier LLI Low-Layer Information LLID Low-Level Identifier LLL Low-Level Language LLLTV Low Level Light Television LLM L-band Land Mobile LLM Logical Link Manager LLME Lower Layer Management Entity LLN Line Link Network LLN Logical Link Number LLNL Lawerence Livermore National Laboratory LLP Line Link Pulsing LLP Link Layer Protocol LLPP Link Layer Protocol Parameters LLS LAN-Like Switching LLS Link Layer Software LLSC Link Set Control LLSU Low Level Signaling Unit LLWS Link Layer Window Size, LAPB LLWSX75 Link Layer Window Size for X.75 LM Layer Management LM Layer Management LM Leg Multiple LM Line Mode LM Line Module LM Line Multiplexer LM Linear Multicast LM Line-Monitoring LM Link Manager LM Link Monitor LM Load Monitor LM Local Member LM Location Manager Lm Low-Mobile Channel lm lumen Lm Traffic channel with capacity lower than Bm LMA Local Mean Attenuation LmAN Limited LAN (low cost/performance LAN) LMAN Load Management LMAP Lower Mapping Module LMB Left Mouse Button LMB Line Module Busy LMB Lower Middle Byte LMC Line Module Controller LMC Loop Maintenance Center LMC LSI Messaging Card LMCS Local Multipoint Communications System LMCUT Line Maintenance Cutover LMD Line Module LMDS Local Multichannel Distribution Services LMDS Local Multipoint Distribution Service LMDS Local Multipoint Distribution System LME Layer Management Entity LME Line Module Equipment LME Line Monitoring Equipment LME LM Ericsson LMES Land Mobile Earth Station Lmest Sidetone path loss LMF Language Media Format LMI Laser Module with Isolator LMI Layer Management Interface LMI Link Management Information LMI Link Management Interface LMI Local Management Interface LMMP LAN/MAN Management Protocol LMMS Local Message Metering Service LMOS Loop Maintenance Operations System LMP LAN Management Protocol (IBM) LMP Layer Management Protocol LMP Local Management Protocol LMPS Land Mobile Products Sector (Motorola) LMR Land Mobile Radio LMRQAS Land Mobile Radio Quality Assurance Scheme LMS Land Mobile Satellite LMS Least Mean Squares (Algorithm) LMS Level Measuring Set LMS License Management Services LMS Line Monitoring System LMS Local Measured Service LMS Local Message Switch LMS Location and Monitoring Services LMS Logical Messages LMS Lotus Messaging Switch LMSC LAN-MAN Standards Committee LMSI Local Mobile Station Identity LMSK Level-controlled Minimum-Shift Keying LMSP Local Message Switch Processor LMSS Land Mobile Satellite Service LMT Lightwave Microcell Transceiver LMT Local Maintenance Terminal LMT Local Mean Time LMU LAN Management Utilities LMU LAN Manager for UNIX LMU Line Monitoring Unit (ATT) LMU Local Message Unit LMWS Licensed Millimeter-Wave Service LMX Link Multiplexer LMX L-type Multiplex LN Line LN Line Number LN Load Number LN Local Network LN Local Number LN Logical Network ln natural logarithm LNA Local Network Architecture (IBM Inc.) LNA Local Numbering Area LNA Low Noise Amplifier LNB Low Noise Block (down converter) LNB Low-Noise Block LNC Layer Network Coordinator LNC Local Node Clock LNC Local Node Control LNC Low Noise Converter LND Last Number Dialed LND Local Number Dialed LNI Line Interface LNI Line Number Identification LNI Local Network Interface LNK Shortcut (Link) File LNLS Layered Networks' Integrated Services LNM Linefeed/Newline Mode LNN Logical Network Number LNNI LAN Emulation Network-to-Network Interace LNNI LANE NNI LNP Local Number Portability LNR Last Number Redial LNr Leitungsnummer (Line Number) LNR Low Noise Receiver LNRA Last Number Redial Associated with Set LNS L2TP Network Server LNS Lines LNS Lines Maintenance Subsystem LNW Local NetWork LNX Low Noise high stability block downconverter LO Lamp Only LO Learning Organization LO Link Option LO Local Origination LO Local Oscillator LO Lockout LO Low Priority LO Lower Order LOA Letter of Agency LOA Library Object Adapter LOB Line of Business LOC Lines of Code LOC Linked Object Code LOC Local LOC Local End, No NUI LOC Localizer LOC Locality LOC Location LOC Location Number LOC Loss of Clock LOC Loss of Continuity LOC Lowest Incoming Channel LOC Lowest Outgoing Channel LOCAP Low Capacitance cable LOCN Location LocNo Location Number LOCNUI Local End, NUI Recorded LOCOS LOCal Oxidisation of Silicon (IC Technology) LOCREQ Location Request message LOD Level of Detail LOD Line Overflow to Directory Number LODA Local Optimized Dynamic Assignment LOF List of Figures LOF Loss of Frame LOF Loss of Framing LOF Lowest Observable Frequency LOFA Loss Of Frame Alignment LOG Call Logging Log Logarithm to the base 10 LOGAL LOGical ALgorithmic language LOH Line Overhead LOI Letter Of Intend LOL Laughing out loud LOLA LOTOS LAboratory LOM Local Operations Manager LONAL Local Off-Network Access Line LONESL List of Non-Empty SNO Lists LOO Likelihood Of Occurrence LOOPUS geostationary LOOPs in orbit occupied permanently by Unstationary Satellites LOP Line of Product LOP Loop Optical Carrier LOP Loss of Pointer LOP Loss of Power LOP Lower Order Path LOPA Lower Order Path Adaptation LOPSN Lower Order Path Sub-Network LOPT Lower Order Path Termination LOR Line Overflow to Route LOR Logical Object Reference LORAN Long Range Navigational System LORE Logic Oriented Repair Environment LOS Line Of Side LOS Line Out of Service message LOS Line-of-Sight LOS Loss Of Signal LOSDG Loss of Signal/Loss of Synchronization Word with Dying Gasp LOSNDG Loss of Signal/Loss of Synchronization Word with No Dying Gasp LOST Local Originating Station Treatment LOST Lost Message LOSW Loss Of Synchronization Word LOT Lapped Orthogonal Transform LOT List of Tables LOTOS Language for Temporal Ordering Specification LOTOS Language of Temporal Ordering Specifications LOUISA Lunar Optical-Ultraviolet-Infrared Synthesis Array LOVC Lower Order Virtual Container LOW Low-Overhead Wakeup LP Language Processing LP Licensed Product LP Line Printer LP Linear Prediction LP Linear Program LP Linear Programming LP Link Processor LP Local Packing LP Local Processor LP Logical Port LP Logical Processsor LP Long (radio) Path LP Long Playing (record) lp Long pointer LP Longitudinal Parity LP Loop LP Loss Priority LP Low Pass (filter) LP Low Priority LPA Linear Power Amplifier LPA Logical Page Address LPA Loop Back Acknowledgment message LPA Loudspeaker Paging Access LPA Lower-order Path Adaptation LPAM Line Power and Alarm Module LPAS Linear Prediction Analysis-by-Synthesis LPB Link Interface Paddle Board LPBK Loopback LPBK Loopback Trunk LPC Linear Prediction Coding (Speech Synthesis) LPC Linear Prediction Coefficient LPC Linear Predictive Code LPC Linear Predictive Coder LPC Linear Predictive Coding LPC Local Port Controller LPC Local Procedure Call LPC Loop Provisioning Center LPC Lower-order Path Connection LPCS Licensed Personal Communications System LPCVD Liquid Phase Chemical Vapor Deposition LPCVD Low Pressure Chemical Vapour Deposition (IC Technology) LPD Line Printer Daemon LPD Link Protocol Discriminator LPD Loop Timed LPD Low Power Device (transmitter) LPD Low Proability Detection LPDA Link Problem Determination Aid (IBM) LP-DDCA Local Packing Dynamic Distributed Channel Assignment LPDU Link Protocol Data Unit LPE Layout Parameter Extraction LPF Low Pass Filter LPI Lightning Protection unit lpi Lines Per Inch LPI Lines Per Inch LPIC IntraLATA PIC LPIC Local Primary Intra-LATA Carrier LPIC Per-Line Primary InterLATA Carrier LPIF L-Bus/P-Bus Interface LPII Line Privileges Information Indicator LPLF Least Power Level First LPLMN Local PLMN LPM Linearly Polarized Mode LPM Lines Per Minute LPM Linux Projects Map LPM Logical Port Multiplexer LPN Local Packet switched Network (BOC) LPO Local Processor Outage LPP Licensed Program Product LPP Lightweight Presentation Protocol LPP Link Peripheral Processor LPR Line Printer LPR Line Printer Requester LPR Line-Protected Ring LPRA Low Power Radio Association LPRI Loss Priority LPS Lightning Protection System LPS Line Profiling System LPS Local Processor SRAM LPS Low Power Satellite (...50W) LPS Low-Power Schottky lpsz Long pointer to a string terminated by a zero byte LPT Line Printer LPT Logical Processor Type LPT Lower-order Path Termination LPTS Loop Time Slot LPTV Low Power Television LPU Line Processing Unit LPU Link Processing Unit LPV Lowest PVC LPVS Link Packet Voice Server LPWA Lucent Personalized Web Assistant LQ Letter Quality LQA Line Quality Advisor LQM Line Quality Manager LQM Link Quality Monitoring LQN Line Quality Network LQP Letter-Quality Printer LR ISO country code for Republic of Liberia LR Last Record LR Link Register LR Location Register LR Logic Return LR Long Reach LR Loudness Rating LRA Line Reversal on Answer LRAM Local RAM LRB Loop Reverse Battery LRC Layout-Rule Check (IC Design) LRC Learning Resource Center LRC Line Restriction Code LRC Local Routing Center LRC Longitudinal Redundancy Check LRC Lost Record Count LRCC Longitudinal Redundancy Check Character LRCF Location Registration Control Function LRD Long Route Design LRDF Location Registration Data Function LRDI Line Remote Defect Indication LRE Logic Return Equalizer LRE Low Rate Encoding LRE Low Rate Encoding LRF Location Registration Function LRFSM Location Registration Function State Model LRGP Loudness Rating Guarding Position LRI Link Remote Inhibit Test Signal LRJ Location Reject LRM Language Reference Manual LRM Least Recently used Master LRM Local Receiver Module LRMPS Local-to-Remote Maximum Packet Size LRN Local Reference Number LRN Location Routing Number LRPC Lightweight Remote Procedure Call LRQ Location Request LRR Learning With Random Routing LRS Line Reversal on Seizure LRTC Local-to-Remote Throughput Class LRU Least Recently Used LRU Least Replaceable Unit LRU Line Remote Unit LRU Line Resource Unit LS ISO country code for Kingdom of Lesotho LS Least Significant LS Letter Shift LS Line Station (TETRA) LS Line Subgroup LS Line Switch LS Link Set LS Link State LS Link Switch LS Local Single-Layer LS Local Switch LS Locking Shift LS Loop Start LS LoudSpeaker LS Low Speed LS(0/1) Link Status bits LSA Link State Advertisement LSA Local Security Authority LSA Low Speed Adapter LSA Low-Speed Access LSA RC Low Speed Access Resource Complex LSAC Signaling Link Activity Control LSAP Link Layer Service Access Point LSAP Link SAP LSAP LLC Service Access Point LSAPI License Server API LSAPI License Service API LSAS Line Side Answer Supervision lsb Least Significant Bit LSB Least Significant Bit (byte) LSB Lower Sideband LSB Lower SideBand LSC Large Scale Configuration LSC Large System Configuration LSC Line Screening Code LSC Link State Control LSC Link State Controller LSC List Search Call (TETRA) LSC Location Service Center LSC Logical Signaling Channel LSC Loopback Select Code LSCC Local Servicing Control Center LSCNB LIDB-Specified Called Number Blocking LSCP Low-Speed Card Punch LSD Least Significant Digit LSD Least Significant Digit LSD Line Signal Detector LSD Line-Sharing Device LSD Low Speed Data LSDA Signaling Data Link Allocation LSDB Link State Database LSDB Listing Services Database LSDB Load Sharing Database LSDBMS Listing Services Database Management System LSDS Standby Data Link Selection LSDU Link Layer Service Data Unit LSDU Link Service Data Unit LSDU Link Service Data Unit LSDU Low Speed Data Unit LSE Language Sensitive Editor LSE Line Signalling Equipment LSE Local Single-Layer Embedded LSE Loop Signaling Equipment LSES Line Severe Errored Second(s) LSF Line Spectral Frequency LSF Line Spread Function (Imaging) LSF Line Switch Frame LSF Load Sharing Facility LSG Line Subgroup LSH Least Significant Half Word LSI Large-Scale Integration LSI Line Side Interface LSI Load Status Information LSI Low Speed Interface LSID Local Session Identification LSL Link Support Layer LSL Linux System Labs LSL Load Segment Limit LSL Local Serial Link LSLA Signaling Link Activation LSLD Signaling Link Deactivation LSLR Signaling Link Restoration LSM Limited Size Messaging LSM Line Switch Marker LSM Link Set Management LSM Link Status Message LSM Linux Software Map LSMS Local Service Management System LSO Line Signalling Oscillator LSO Local Serving Office LSOA Local Service Order Administration LSP Label Switched Path LSP Link State Packet LSP Link-State PDU LSP Liskov Substitution Principle LSP Listing Services Platform LSP Local Service Provider LSP Logical Service Port LSP Loudspeaker Paging LSPI Local Service Provider Identification LSPID Local Service Provider ID LSPK Loudspeaker LSPP Local Service Provider Portability LSPTR Low-Speed Paper Tape Reader LSR Label Switch Router LSR Label Switching Router LSR Leaf Setup Request LSR Loose Source Route LSR Loose Source Routing LSROS Limited Size Remote Operation Services LSRPA Loudspeaker and Radio Paging Access/Answerback LSRR Loose Source and Record Route LSS Laboratory Support System LSS Link Status Signal LSS Loop Switching System LSSD Level-Sensitive Scan Design (IC) LSSGR LATA Switching Systems Generic Requirements LSSGR Local Switching Systems General Requirements (obsolete meaning) LSSU Link Status Signal Unit LSSU Link Status Signal Unit LST Laplace-Stieltjes Transform LST Listing LST Listing File LST Local Symbol Table LSTA Signaling Terminal Allocation LSTDN Listed Directory Number LSTP Local Signal Transfer Point LSTR Listener Sidetone Rating LSTTL Low-power Schottky Transistor-Transistor Logic LSU LAN Service Unit LSU Leading Signal Unit LSU Line Shelf Unit LSU Line Sub-Unit LSU Local Support Unit (viz CSU) LSU Local Switching Unit LSU Lone Signal Unit LSV Line Status Verifier LSV Low Speed Variant LSW Least Significant Word LSZH Low Smoke Zero Halogen LT ISO country code for Lithuania LT Lab Trial LT LATA Tandem LT Less Than LT LeTter LT Line Terminal LT Line Termination LT Link Trailer LT Local Tandem LT Logical Terminal LT Logical Tuple LT Long-Term LT Low Tension LT Low Tone LT Lower Tester LT Lucent Technologies LTA Line Test Access LTA Load-Transfer-Acknowledgement signal LTA Local Transport Address LTA Long Term Architecture LTAP Logical Terminal Access Privileges LTB Last Trunk Busy LTC Line/Trunk Controller LTC Local Test Cabinet LTC Longitudinal Time Code (VTR) LTC Lowest Two-way Channel LTCCS Last Trunk CCS LTCF Lower Tester Control Function LTCI ISDN Line/Trunk Controller LTCLASS Logical Terminal Class LTCO Line/Trunk Controller Offshore LTCP Lower Tester Communication Point LTCT LATA Tandem Connection Trunk LTD Licensed-In Technology Directory LTD Local Telecom Division (Sprint) LTD Local Test Desk LTE Line Terminal Equipment LTE Line Terminating Equipment LTE Line Termination Equipment LTE Line Trunk Equipment LTE Linear Transversal Equalizer LTE Lite Terminating Equipment LTE Local Terminal Emulator LTEI ISDN Line Trunk Equipment LTF Long-Term Failure LTF Loop Testing Frame Ltg Leitung (Line) LTG Line Treatment Group LTG Line/Trunk Group LTG Logical Terminal Group LTGRP Logical Terminal Group LTH Line and Trunk Hunting (supplementary service) LTID Local Trunk Identification LTID Logical Terminal Identifier LTIP Long-Term Investment Plan LTL Local/Toll Services LTL Lunchtime Learning LTLI Local/Toll Services International LTLS Lunch Time Learning Session LTM Line and Trunk Maintenance LTNUM Logical Terminal Number LTOM Less Than One Minute LTORG Literal Pool Origin LTOS Less Than One Second LTP Line and Trunk Peripherals LTP Line Test Position LTP Line Trunk Peripheral LTP Local Test Position LTP Long Term Prediction LTR Load Task Register (80x86 inst) LTR Load Transfer LTR Load-Transfer signal L-TRIB Link-Transfer Rate of Information Bits LTRS LeTteR Shift LTS Labelled Transition System LTS Laboratory Test System LTS Library of Test Specification LTS Lightwave Telecommunication System LTS Line Traffic Simulator LTS Line Trunk Server LTS Long-Term Storage LTS Loop Test System LTS Loop Testing System LTT Line Termination Type LTU Line Terminating Unit LTU Line Test Unit LTU Lower Test Unit LTUA Line Test Unit, Analog LTUD Line Test Unit, Digital LTUMF Loss of TU Multiframe LU ISO country code for Grand Duchy of Luxembourg LU Line Unit LU Linux Universe LU Living Unit LU Local Units LU Location Update LU Location Updating lu Logical Unit LU Logical Unit (IBM-SNA) LUA Link Uninhibit Acknowledgment message LUA Logical Unit Application LUF Line Unit Failed LUF Lowest Usable Frequency (Short Wave Propagation) LUG Linux User's Group LUH Logical Unit Handler LUI Line-by-Line User Interface LUID Locally Unique Identifier LULT Line Unit/Line Termination LUN Link Uninhibit message LUN Logical Unit Number LUNI LAN Emulation User-Network Interface LUNI LANE UNI L-UNI LAN Emulation User-to-Network Interface LUNT Line Unit Network Termination LUNT Line Unit/Network Termination LUP Location Update Protocol LUP Logical User Port LUT Lookup Table LUT Look-Up Table LUTI Line Unit T Interface LUTS Locked-Up Trunk Scan LUX Lbus to Xlbus ASIC LV ISO country code for Latvia LV LaserVision LV Length and Value LV List Volumes LV Logical Volume LV Low Voltage LVA List Viterbi Algorithm LVC Logical LVC Low-Order Virtual Container LVD Low Voltage Directive LVD Low Voltage Disconnect LVDT Linear Variable Differential Transformer LVIC Liquid crystal display Video Interface Controller LVL Level LVM Leave Message LVM Logical Volume Manager LVR Low Voltage Reconnect LVR Low Voltage Relay LVS Layout vs. Schematic LVS Local Video Server LVT Link Verification Transactor LVX LAN/WAN Exchange LW Leave Word LW Lightwave LW Long Wave (100...500 kiloHertz) LW Long-Wavelength LWA Light Wire Armor LWA Light Wire Armored LWC Leave Word Calling LWE Lower Window Edge LWER Lightweight Encoding Rules LWI Logical Work Item LWL LichtWellenLeiter LWP Library for WWW Access in Perl LWP Lightweight Process LWP Logical Work Processor LWT Listen While Talk LWT Listen While Talk (CSMA/CD) lx lux LXP LSI Crospoint LY ISO country code for Libya LZ Landing Zone LZ Lempel-Ziv LZW Lempel-Ziv-Welch back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L - M - N|O|P|Q|R|S|T|U|V|W|X|Y|Z

M Magenta M Maintenance M Management M Manager M Mandatory M Mantissa M Mega (10+6 or 1024*1024) M Member M Memory m Meter(s) M Million M Modified M Modifier M Monitor M Monitor Bit m Monospace M More M More Data M Multiframing M OSI Management Service M&C Mapping and Coordination M&HIRS Multimedia and Hypermedia Information Retrieval Services M&P Methods and Procedures M/IO Memory/IO M/O Mandatory/Optional M/QPR Modified/Quadrature Partial Response M/S Master/Slave M/U Multi-User M/W Microwave M2M Manager-to-Manager MA ISO country code for Kingdom of Morocco MA MAC Layer Service MA Maintenance Action MA Maintenance Attendant MA Major MA Management MA Media Adaptor MA Medium Adaptor MA Memory Administration MA Message Analysis MA Message Analyzer MA Metropolitan Area mA Milliampere(s) MA MJU Alert MA Mobile Allocation MA Moving-Average MA Multiple Access MA My Address MA U.S. postal code for Massachusetts M-A Manager-Agent MA OA Memory Administration Operations Application MA&E Market Awareness and Education MAANR Management-and-Abnormal MAC Machine Administration Center MAC Macintosh MAC MACRO-11 File MAC Maintenance Action Client MAC Mandatory Access Controls MAC Mandatory Authorization Code Collection MAC Measurement and Analysis Center MAC Media Access Control MAC Medium Access Control MAC Memory Administration Center MAC Message Authentication Code MAC Message Authenticity Check MAC Mobile Attenuation Code MAC Moves, Adds, and Changes MAC Multiple Access Control MAC Multiplexed Analog Components MAC Multiplier-Accumulator Chip MAC Multiply Accumulate MAC Multiply-Accumulate MAC Multipurpose Access Client MACA Mobile-Assisted Channel Allocation MACA Mobile-Assisted Channel Assignment MACD Meridian Automatic Call Distribution MACE Macintosh Audio Compression/Expansion MACF Multiple Association Control Function MACN Mobile Allocation Channel Number MACR Modified Allowed Cell Rate MACRO Machine Assembled Code for Routine Operations MACS Meeting Access and Control System MacSRP Macintosh Software Release Package MACSTAR Multiple Access Customer Station Rearrangement MAD Michigan Algorithmic Decoder MADE Manufacturing and Automated Design Engineering MADN Multiple Appearance Directory Number MADO Meridian Asnchronous Data Option MADS Maintenance And Diagnosis System MADS Multiple Access Data System MAE Mac Emulator Environment MAE Macintosh Application Environment MAE Merchant Asic Engineering MAE Message Addressable Entity MAE Message Arrival Element MAE Metropolitan Area Exchange MAF Management Application Function MAF Minimum Audible Field MAF Mobile Additional Function MAF Multiple Access Facility MAFF Market Access Fact Finding MAG Metropolitan Area Gateway MAGIC Multidimensional Applications and Gigabit Internetwork Consortium MAH Mobile Access Hunting (supplementary service) MAHD Mobile Assisted Handoff Denied MAHO Mobile Assisted Handoff MAHO Mobile Assisted Handover MAI Magellan Access Integrator MAI Mobile Allocation Index MAI Multiple Access Interface MAI Multiple Access Interference MAID Maidenhead MAINT Maintenance MAIO Mobile Allocation Index Offset Maj Major MAK Make File MAL Application Layer-Management Entity Interface MAL Mobility Adaptation Layer MALSAN Maximum Authorised Length of Subaddress Accepted by Network MAMI Modified Alternate Mark Inversion MAMSK Multiamplitude Minimum Shift Keying MAMSK Multi-Amplitude Minimum Shift Keying MAN Manual MAN Manual Line MAN Metropolitan Area Network MAN Multiple Area Network MAN SIG MANagement Special Interest Group (OSF) ManB Maintenance Busy MANB Manual Busy ManB Manual Busy MANIAC Mechanical And Numerical Integrator And Computer MANIC MANufacturer Identity for Cordless fixed part and Cordless portabl e part MAO Maintenance, Administration and Operations MAOA Memory Administration Operation Application MAOS Memory Administration Operations System MAP Maintenance and Administration Position MAP Maintenance-Analysis Procedure MAP Management Application Process MAP Management Assessment Program MAP Manufacturing and Planning MAP Manufacturing Automation Protocol MAP Maximum A Posteriori Adaptation MAP Mediated Access Point MAP Medium Access Protocol MAP Microelectronics Application Project MAP Minimum Acceptable Performance MAP Mobile Application Part (GSM 09.02) MAP Mobile Application Part (SS7) MAP Multi-Aspect PAD MAPCI MAP Command Interpreter MAPDU MA Protocol Data Unit MAPDU Management-Application Protocol Data Unit MAPI Messaging Application Programming Interface MAPI Microsoft Application Programming Interface MAPOS Multiple Access Protocol Over SONET/SDH MAQ Message Arrival Queue MAR Memory Address Register MAR Multialternate Route MAR Multialternate Routing MARC Machine Readable Cataloguing MARCH Bellcore operations support system for Memory Administration/Recent Change of SPCS administrable data (Bellcore trademark) MARECS MARitime European Communications Satellite MAROTS MARitime Orbital Test Satellite MARPAL Marseilles-Palo submarine cable MARS Message Archiving and Retrieval Service MARS Multicast Address Resolution Server MARS Multipurpose Access Remote Server MARTEL Marseilles-Tel Aviv submarine cable MAS Managed Access System MAS Management Application System MAS Mass Announcement System MAS Mass Calling MAS Memory Administration System MAS Meridian Attendant Service MAS Mobile Access Station MAS Muenzanschluss (Prepayment Terminal) MAS Multimedia Applications Support MAS MAP Application Service (IBM) MASA Main Store Arrays MASC Main Store Controller MASC MOBITEX Asynchronous Communications User Interface MASE Message Administration Service Element MASER Microwave Amplification by Stimulated Emission of Radiation MASI Multimedia Application/Services Interface MASK Logical Mask Immediate (88100 inst) MASM Microsoft Assembler MASQ Meridian Attendant Service Queueing MASR Memory Address Select Register MASS Multiple Access Sequential Selection MAT Machine-Aided Translation MAT Meridian Administration Tools MAT Metropolitan Area Trunk MATD Maximum Acceptable Transit Delay MATD Maximum Allowable Transit Delay MATE Modular Automatic Test Equipment MATES Management of Training and Expertise System MATH Matheson MATM Multiple Area Transfer Mode MATSE Mobile Automatic Telephone System (F) MATV Master Antenna TeleVision system MAU Mathematical Acceleration Unit (Floating-Point Co-Processor) MAU Media Access Unit (IEEE 802) MAU Media Attachment Unit MAU Medium Attachment Unit MAU Memory Access Unit MAU Multiple Access Unit MAU Multistation Access Unit (token ring/IBM) MAVT Mobile Audio-Visual Terminal MAX Cinemax MAX Maximum MAX Media Access Exchange MAXCR Maximum Number of Non-Call-Associated Call Reference Values MAXIT Maximum Interference Threshold MAXS Metallic Automated Cross-Connect System MAXTRIG Maximum Trigger Count MAZ MagnetAufZeichnung MB Macro Block MB Macroblock MB Magnetband (Magnetic Tape) MB Mail Box MB Mailbox MB Main Battery MB Maintenance Busy MB Make Busy MB Manual Busy MB Medium Band MB MegaBit MB Megabyte MB Message Box MB Message Buffer Size MB Moon Bounce MB Motherboard MB Postal code for Manitoba MBA Macroblock Address MBA Maintenance Group Blocking Acknowledgment Signal Message MBA Masters in Business Administration MBA Modular Business Access MBA Multimedia Business Applications MBA Multiple-Bridged Arrangement mbar milibar MBASET Make Busy Application Sets MBC Modified Bi-phase Code (Telecom.) MBC Multi Bearer Control MBC Multiple Bearer Control MBCD Man Busy Card MBCE Manual Bridged Call Exclusion MBCEACC Manual Bridged Call Exclusion Access Codes MBCETACC Manual Bridged Call Exclusion Toggle Access Code MBCF Mobile Bearer Control Function MBCS Multibyte Character Set MBCT Make Busy Control Terminals MBCTANL Make Busy Control Per Analog Terminal MBCTTSP Make Busy Control Terminal Per TSP MBD Management By Delegation MBDS Modular Building Distribution System MBE Molecular Beam Epitaxy MBE Molecular Beam Epitaxy (GaAs Process, VHSIC Technology) MBE Multi-Byte Extension MBF Microsoft Binary Format MBFM Medium-Band Frequency Modulation mbg Money Back Guarantee MBG Multilocation Business Group MBG Multiswitch Business Group MBGE Multiswitch Business Group Element MBI Message Billing Index MBI Message Billing Indicator MBIC Modular BiCMOS MBIF Maintenance Bus Interface MBIT Metering Bit M-bit More data bit Mbit/s Megabits per Second MBK Make Busy Key MBKU Multi-Button Key Unit MBLAM Memory-Based Listing Access Method MBM Magnetic Bubble Memory MBM Motion Boundary Marker MBNQA Malcom Baldrige National Quality Award MBONE Multicast Backbone MBone Multicast Backbone MBONE Virtual Internet Backbone for Multicast IP MBPC Multiple Burst Per Carrier MBPG Mobile Paging MBPS Measure-Based Priority Scheme Mbps Megabits Per Second MBPS MegaBytes Per Second MBPT Multiple Burst Per Transmitter MBR Master Boot Record MBS Master Boot Sector MBS Maximum Burst Size MBS M-bit Sequence MBS Meridian Business Set MBS Microcell Base Station MBS Mobile Broadband Services MBS Mobile Broadband System MBS Multi-Block Synchronization signal unit MBSCO Meridian Business Set Camp-On MBSCW Meridian Business Set Call Waiting MBSY Manual Busy MBTI Meyers-Briggs Type Indicator MBU Message Buffer Unit MBUR Maintenance Group Blocking/Unblocking Reception MBUS Maintenance Group Blocking/Unblocking Sending M-BWO M-type Backward Wave Oscillator (Microwaves) MBX Multi-Buffering Extension MBYTE Match Byte Mbyte Megabyte MC ISO country code for Principality of Monaco MC Machine Congestion MC Maintenance Center MC Maintenance Control MC Maintenance Controller MC Major Class MC Major Line Class MC Management Client MC Management Committee MC Marks Committee (CENELEC) MC Media Copy Mc Megacycle MC Message Center MC Message Controller MC Message Converter MC MHz MC Module Code MC Motion Compensated MC Motion Compensation MC Moving Coil MC Multi Carrier (TDMA) MC Multiple Carrier MC Multiplex Code MC Multipoint Control Entity MC Multipoint Controller MC1 Machine Congestion Level 1 MC2 Machine Congestion Level 2 MC3 Machine Congestion Level 3 MCA Manual-Changeover-Acknowledgement signal MCA MDII: Misrouted CAMA MCA Micro Channel Architecture MCA Mobile Corporate Access MCA Multichannel Access MCA Multiple Call Arrangement MCA Multiplexing Channel Adapter MCAD Mechanical CAD MCAM Meridian Cabinet Auxiliary Module MCAST Multicast MCB Memory Control Block MCB Message Control Block MCB Mobile Communications Bureau MCBTS Multi-Channel Basestation Transceiver Subsystem MCC Call Control-Management Entity Interface MCC Maintenance and Control Center MCC Maintenance Control Center MCC Maintenance Control Circuit MCC Master Control Center MCC Master Control Complex MCC Message Channel Controller MCC Miscellaneous Common Carrier MCC Mobile Control Center MCC MCC Mobile Crosstalk Control MCC Multi-Channel Connection MCC Multiple Channel Coordination MCC Multipoint Command Conference MCCC Multi Connection Call Control MCCD Mechanized Calling Card Service Digits MC-CDMA Multicode CDMA MCCOI Multimedia Conferencing Community of Interest MCCS Mechanized Calling Card Service MCD Maintenance Cell Description MCD Minimum Charge Duration MCD Minimum Chargeable Duration MCD Mobile Communications Division MC-DCT Motion Compensation-Discrete Cosine Transform MCDN Meridian Customer Defined Networking MCDN Message Center Directory Number MCDN Micro-Cellular Data Network MCDR Meridian Cabinet Digital Remote MCDS Multi-Channel Data System MCDU Thousands, Hundreds, Tens, Units MCDV Maximum Cell Delay Variance MCE M Bus Checker Enable MCE Management Control Entity MCEI MAC Connection Endpoint Identification MCF Maintenance Control Flag MCF Master Configuration File MCF Media Access Control Convergence Functions MCF Medium access control Convergence Function MCF Message Communication Function MCF Message ConFirmation MCF Meta Content File MCF Meta Content Framework MCF Mobile Control Function MCF Most Critical First MCFS Modem Characteristics Facility Support MCG Maintenance Code Gap MCG Motorola Computer Group MCGA Memory Controller Gate Array MCGA Multicolor Graphics Array MCGAM MIXER Conformant Global Address Mapping MCH Maintenance Channel MCH Malicious Call Hold MCH Matcher MCHO Mobile Controlled Handover MCI Malicious Call Identification MCI Media Control Interface MCI Message Compatibility Information MCI Microwave Communications Inc. MCID Malicious Call IDentification (supplementary service) MCIDRi MCID Request Indicator MCIDRi MCID Response Indicator MCIL Manufacturing Compatible Issue Lineup MCIS Microsoft Commercial Internet Service MCL McLean MCL Ltd. MCL Microsoft Compatibility Labs MCL Multipoint Communication Layer MCLM Meridian Cabinet Line Module MCLM-E Meridian Cabinet Line Module-Enhanced MCLPA Multi Channel Linear Power Amplifier MCLR Maximum Cell Loss Ratio MCM Maintenance Control Module MCM Message Channel Maintenance MCM Message Channel Manager MCM Multicarrier Modulation MCM Multichip Module MCM Multi-Chip Module MCMP Manual Camp-On MCN M-Communication Network MCN Mobile MCN Mobile Control Node MCN Multipoint Command Negating MCNC Microelectronics Center of North Carolina MCNS Multimedia Cable Network Systems MCNT Meter Pulse Count MCO Manual-Changeover signal MCO Mobility Call Origination MCO Multi-Console Organizer MCOM Mosaic Communications Corporation MCompI Message Compatibility Information MCOS Message Waiting Class of Service MCOS Messaging Class of Service MCP Management and Control Processor MCP Maritime Cargo Processing MCP Message Control Program MCP Microsoft Certified Professional MCP Mobility Control Point MCPA Multicarrier Power Amplifier MCPC Multiple Channels Per Carrier MCPN Mobile Customer Premises Network Mcps Megacycles per second (obsolete) MCPS Microsoft Certified Product Specialist MCPS Multi-CPS MCPT Multiple Channels Per Transmitter MCR Mapped Conversation Record MCR Mate Communications Register MCR Minimum Cell Rate MCR Mirror Consistency Record MCR Module Configuration Register MCR Monitor Console Routine MCRD Maximum Call Redirections and Deflections MCRT Maintenance CRT MCRU Meridian Cabinetized Remote Unit MCRW Memory-Card Reader/Writer MCS MAP Communication Server (IBM) MCS Maritime Communications System MCS Message Collection System MCS Message Command System MCS Message Control System MCS Micro Controller System MCS Microcontrol Store MCS Microcontroller Subsystem MCS Micro-Controller Subsystems MCS Microsoft Consulting Services MCS Mini Cable Ship MCS Multicast Server MCS Multi-Channel Scaler (Counter) MCS Multimedia Communications Systems MCS Multipoint Command Symmetrical Data Transmission MCS Multipoint Communication Service (ITU) MCS Multipoint Communications Service(s) MCS Multipoint Communications System MCSA Multi-Channel Spectrum Analyser MCSA Multimedia Communications Systems Architecture MCSD Microsoft Certification for Software Developers MCSD Microsoft Certified Solution Developer MCSE Multiplex Configuration Signalling Entity MCSN Monitoring Cell Sequence Number MCSS Meridian Cabinet Spare Storage MCT Malicious Call Trace MCT Metric Color Tag MCT Mobile Communication Terminal MCT Modem Conformance Tester MCTCB Maximum Combined Throughput Class for B-Channel MCTCD Maximum Combined Throughput Class for D-Channel MCTD Maximum Cell Transfer Delay MCTG Multicast Translation Group MCTSI/DLI Module Controller Time-Slot Interchanger/Dual-Link Interface MCTU Module Controller Time Slot Interchange Unit MCU Main Control Unit MCU Master Control Unit MCU MicroComputer Unit MCU Microcontroller Unit MCU Microprocessor Control Unit MCU Minimum Coded Unit MCU Mobile Computing Unit MCU Multipoint Conference Unit MCU Multipoint Connection Unit MCU Multipoint Control Unit MCUP Mechanization and Cooperative User Programming MCVD Modified Chemical Vapor Deposition MCVFT Multichannel Voice Frequency Telegraphy MCW Modulated Continuous Wave MCZA Multiple Channel Zone Access (Telecom.) MD ISO country code for Republic of Moldova MD Management Domain MD Manufacture Discontinue MD Manufacture Discontinued MD Manufacturer-Defined MD Manufacturing Discontinued MD Mediation Device MD Message Definition MD Message Delimiter MD Message Digest MD Microsoft DoubleSpace MD Mini-Disk MD Mission Domain MD Monochrome Display MD More Data MD Moving Direction MD Multi-Destinational MD Multiple Digit MD U.S. postal code for Maryland MD2 Message Digest 2 MD4 Message Digest 4 MD5 Message Digest 5 MDA Manufacturing Design Authorization MDA Mechanical Design Automation MDA Mechanized Directory Assistance MDA Modular Digital Architecture MDA Monochrome Display Adapter MDA Multiple Digit Absorbing MDB Maintenance Device Buffer MDB Message Data Block MDB Meta Database MDB Modified Duobinary MDB Module Database MDBS Mobile Data Base Station MDC Manipulation Detection Code (OSI/security) mdc Markup Declaration Close MDC Meridian Digital Centrex MDC Message and Device Controller MDCB Meridian Digital Centrex Base MDCD Meridian Digital Centrex Data Services MDCT Modified Discrete Cosine Transform MDDS Message Definition Data Structure MDE Message Departure Element MDE Multi-Processing Development Environment MDF Main Distributing Frame MDF Main Distribution Frame MDF Maintenance Disable Flag MDH Mission Domain Host MDI Manipulation Dependent Interface (IEEE 802) MDI Media Dependent Interface MDI Medium Dependent Interface MDI Message Desk Indicator MDI Mobile Data International Inc. MDI Multiple Document Interface MDII Machine-Detected Interoffice Irregularities MDII Machine-Detected Interoffice Irregularity MDIS Mobile Data Intermediate System MD-IS Mobile Data Intermediate System MDK Multimedia Development Kit MDL Data Link Connection Management MDL Data Link Layer (Layer 2)-Management Entity Interface MDL Management Data Link MDL Mobile Data Link MDLP Mobile Data Link Protocol MDM Media Device Manager MDM Memory and Device Module MDM Normal Disconnected Mode MDMF Multiple Data Message Format MDN Multiple Access Directory Number MDN Multiple Appearance Directory Number MDNS Managed Data Network Services (CEPT) MDNS Meridian Data Network Systems mdo Markup Declaration Open MDP Magellan Data Provider MDP Markov Decision Process MDP MFOS Demonstration Program MDP Microsoft Developer Studio Project Workspace file MDP Multicast Dissemination Protocol MDPSK Modified Differential Phase Shift Keying MDQ Message Departure Queue MDR Management Data Router MDR Meeting Details Recording MDR Message Detail Recording MDR7 CCS7 Message Detail Recording MDRACC Message Detail Recording Account Codes MDRAM Multibank DRAM MDRCODES MDR Account Codes MDRCP Message Detail Recording- Customer Premises MDR-CP Message Detail Recording to the Customer's Premises MDRDT1 Message Detail Recording Data 1 MDRDT2 Message Detail Recording Data 2 MDRDT3 Message Detail Recording Data 3 MDRDT4 Message Detail Recording Data 4 MDRID Message Detail Recording Customer Identification MDRID Message Detail Recording Identification MDRRAO Message Detail Recording to Revenue Accounting Office MDR-RAO Message Detail Recording via Revenue Accounting Office MDRS Message Detail Recording System M-DRU Multiple DRU MDS Malfunction Detection System MDS Message Delivery Service MDS Message Delivery System MDS Message Desk Service MDS Microprocessor Development System MDS Microsoft Directory Services MDS Microwave Distribution Service MDS Modular Documentation System MDS MTX Data Server MDS Multipoint Distribution Service MDS Multipoint Distribution System MDSC Message Distribution Control MDSE Message Delivery Service Element MDSL Medium-Bit-Rate Digital Subscriber Line MDT Mean Down Time MDT Motor Data Terminal MDT Mountain Daylight Time MDTRS Mobile Digital Trunked Radio System MDU Magnetic Disk Unit MDU Maximum Data Unit MDU Meridian Data Unit MDU Multi Disk Unit MDU Multiple Dwelling Unit MDV Meridian Display Vehicle MDW Multiline Digital Wireless MDW Multiple Drop Wire MDX Modular Digital Exchange ME Maintenance Entity ME Managed Element ME Management Entity ME Mapping Element ME Measurement Entity ME Memory Access ME Message Expert ME Messsage Element mE Milli Erlangs ME Mobile Equipment ME Motion Estimation ME U.S. postal code for Maine MEA Maintenance Entity Assembly MEA Mismatch of Equipment and Attributes MEA Multi-Element Array MEANS Minnesota Equal Access Network Services Inc. MEAS Measure MEB Mate Exchange Bus MEBO Marine Etc Broadcasting Offences (Act) MEC Memory Echo Canceller ME-C Management Entity Control MECAB Multiple Exchange Carrier Access Billing MECCA Mechanized Evaluation of Call Completion Anomalies MECG Maternal Electro CardioGram MECL Motorola (Inc.) Emitter-Coupled Logic MECO Main Engine CutOff MECOD Multiple Exchange Carriers Ordering and Design MED Management Evaluation and Development MED Manchester Encoder/Decoder MED Modular Electronic Device MEDLARS MEDical Literature Analysis and Retrieval System MEE Message Extension Element MEEQ Message Extension Element Queue MEF Maintenance Entity Function MEF Measurement Function MEF MEssage Field MEG Magneto-EncephaloGraphy MEG Mobile Experts Group MEI Maintenance Event Information MEI MBus to ECORE Interface MEI Mobile Equipment Identity MEI Modified, Exclusive, Invalid MEI Multiple Extension Interworking MEIF Management Entity Interface MEL Market Expansion Line MEL Match Enable Latch MEL Material Equipment List MEL MEssage Length MEM Cluster Member MEM Memory MEMCALC Memory Calculation MEMS Micro-Electromechanical Systems MEO Medium Earth Orbit MEO Monomorphic Embedded Object MEOS Medium Earth Orbit Satellite MEP Member of European Parliament MEP Message Encoding Problems MEQ Message Extension Queue MER Meriline MER Message Error Rate MERLIN Multi-Element Radio Link Interferometry Network MERP Multiple-Entry Retrieval Process MERR Multiple Error MERS Most Economical Route Selection MERT Multi-Environment Real Time MES Manufacturing Execution System MES Mobile Earth Station MES Mobile satellite Earth Station ME-S Mobile Data End System M-ES Mobile End Station M-ES Mobile End System MESFET Metal Semiconductor Field-Effect Transistor MES-FET MEtal-Semiconductor (hot carrier contact) GaAs-FET MESH MEdical Subjects Headings (Dedicated DB Retrieval Language) MESH-BN MESHed Bonding Network MESH-IBN MESHed Isolated Bonding Network MESI Modified, Exclusive, Shared, Invalid MESSR Multispectral Electronic Self-Scanning Radiometer MET Memory Engineering Tool MET Multi-Button Electronic Set MET Multi-Emitter Transistor MET Presentation Manager Metafile META Metrics, Tools and Analysis METD Maximum End-to-End Transit Delay METER Metering Team METRAN Managed European Transmission Network METRO Metropolitan METSAT METeorlogical SATellite MEV Mega Electron-Volt MeV Million Electron Volts MEX Memory Extension MEXE Mobile Execution Environment MF Main Frame MF Management Function MF Mandatory Fixed Length MF Mapping Function MF Mediation Function MF Medium Frequencies (300- 3000kHz) MF Menu Flag MF Micro-Fiche MF Micro-Film MF More Fragments flag MF Multiframe MF Multifrequency MFA Management Functional Area MFA Managing For Achievement MFA Modular Front Access MFADS Mechanized Force Administration Data System MFAQ Most Frequently Asked Questions MFAS Multiframe Alignment Symbol MFC Manufacturer's Code MFC Memory Fault Correctable MFC Microsoft Foundation Classes MFC Multi-Frequency Code MFC Multifrequency Compelled MFD Management Functional Domain MFD Master File Directory MFE Multiple Frame Established MFE Multiple Frame Establishment MFG Manufacturer Code MFIR Mate Fault Indication Register MFJ Modification of Final Judgment MFJ Modified Final Judgement MFL Message Framework Library MFLD Modified FLooDnet (LAN protocol) MFLOP Million Floating Point Operations Per Second MFLOPS Mega FLoating-Point Operations Per Second MFLOPS Millions of Floating Point Operations Per Second MFLR Maximum Frame Length Register MFM Modified Frequency Modulation MFM Modified Frequency Modulation (magnetic recording) MFO Multifrequency Signaling Originating MFO Multiple Frame Operation MFOS Multifunction Operations System MFP Multifrequency Pulsing MFP Multifunction Peripheral MFP Multi-Function Peripheral MFP Multifunction Printer MFP Multi-Function Protector MFPB Multifrequency Pushbutton MFPC Multiple Function PC MFPLS Mainframe PLS MFR Manufacturer MFR MF Receiver MFR MultiFrame Register MFS Macintosh File System MFS Memory File System MFS Metropolitan Fiber Systems MFS MF Sender MFS MultiFrame Sender MFS Multiprotocol Controller Fast Simulator MFSK Multilevel Frequency Shift Keying MFSK Multiple Frequency Shift Keying MFSP Modular Frame Supervisory Panel MFT Manual File Transfer MFT Master File Table MFT Meridian Feature Transparency MFT Metallic Facility(ies) Terminal MFT Multiprogramming with Fixed Number of Tasks MFTP Multicast File Transfer Protocol MFU Most Frequently Used MFV Message Format Violation MG ISO country code for Republic of Madagascar MG Master Group MGA Matrox Graphics Architecture MGA Monochrome Graphics Adapter MGB Main Ground Bus MGB Maintenance Group Blocking Signal MGB Master Ground Bar MGC Mentor Graphics Corporation MGCM Meridian General Cabinet Module MGE ManaGement Entity MGE Message Generation Element MGI Mechanized Generic Interface MGM Multicast Group Management MGMT Management MGMT Management System MGN Multi-Grounded Neutral MGQ Message Generation Queue MGR Manager MGT Master Group Translator MGT Mobile Global Title MGTS Message Generator/Traffic Simulator MGU Maintenance Group Unblocking Signal MH ISO country code for Marshall Islands MH Manhole MH Merkle-Hellman MH Message Handler MH Message Handling MH Mobile Host MH Modified Huffman MH Multimedia and Hypermedia information MHD Moving Head Disk MHEG Multimedia and Hypermedia Experts Group MHEG Multimedia and Hypermedia information coding Experts Group (ISO/IE C) MHF Message Handling Facilities MHF Mobile Home Function MHIC Multiport HDLC Interface Chip MHLD Music On Hold Treatment MHO Host Application-Management Entity Interface MHO My Humble Opinion MHP Message-Handling Processor MHPROC Message Handling Process MHRP Mobile Host Routing Protocol MHS Message Handling Service MHS Message Handling System MHT Mean Hold Time MHTML Meta-HyperText Markup Language MHz Megahertz MHz MegaHertz MI Maintenance Initiate MI Management Interface MI Mechanized Interface MI Message Interface MI Method Identifier MI Minimum Interference MI Miscellaneous Item (ETSI) MI Mode Indicate MI Mode Indicative MI Mode Indicator MI Modem Indicator MI Multiple Inheritance MI U.S. postal code for Michigan MI/MIC Mode Indicator/Mode Indicator Common MIA Manual Incoming Allowed MIA Multiple Index Approach MIAM Miami MI-API Management Interface- Applications Programming Interface MIB Management Information Base MIB Management Information Block MIC Maintenance Interface Card MIC Management Integration Consortium MIC Manufacturer Identity Code MIC Media Interface Connector MIC Media Interface Connector (Fibre-Optic Data Communications) MIC Medium Interface Connector MIC Message Integrity Check MIC Message Integrity Code MIC Message Interface Card MIC MICrocomputer MIC Microwave Integrated Circuit MIC Mobile Interface Controller MIC Mode Indicate Common MIC Mode Indicator Common MIC Modem Interface Card MICA Management of Information as a Corporate Asset MICC Maintenance Information at Customer Contact point MICE Microtek (Inc.) In-Circuit Emulator MICP Mobile Internetworking Control Protocol MICR Magnetic Ink Character Recognition MICS Maintenance Inventory Control System MICS Modular Integrated Communications System MICU Message Interface and Clock Unit MID Manual Incoming Denied MID Maritime Identification Digit MID Mean Interruption Duration MID Message Identified MID Message Identifier MID Metafile for Interactive Documents MID MIDI Sequence file MID Mobility Incall Delivery MID Module Identifier MID Multiplexing Identification MID Multiplexing Identifier MIDA Message Interchange Distributed Application (ECMA) MIDA Multiple Integrated Digital Access (UK) MIDAS Multitier Distributed Application Services midc Message Intercept and Dispatch Control MIDI Musical Instrument Digital Interface MIDL Microsoft Interface Definition Language MIEE Member of Institution of Electrical Engineers (UK) MIEE Member of the Institute of Electrical Engineers MIEEE Member of Institute of Electrical and Electronics Engineers, Inc. (US) MIEIE Member of Institution of Electronics and Electrical Incorporated E ngineers (UK) MIF Machine-to-Machine Interface Format MIF Maintenance Interface MIF Maker Interchange Format MIF Management Information File MIF Management Information Format MIFF Machine Independent File Format MIFR Master International Frequency Register MIG Metal-In-Gap MII Media-Independent Interface MII Mobile Information Infrastructure MIL 1/1000 of an Inch (0,0254 millimetres) MIL Maintenance Interface Layer MIL Management Information Library MIL Military MIL MILitary (quality standard) mil Military groups domain MIL Military Standard MIL STD Military Standard MILNET Military Network MILS Missile Impact Location System MIL-STD Military Standard MIM Management Information Message MIM Management Information Model MIM Management Inhibiting Messages MIM Man-in-the-Middle MIM Metal Insulator Metal MIM Modifier Information Manager MIM Module Information Memory MIMD Multiple Instruction Multiple Data MIME Multipurpose Internet Mail Extensions MIMS Messaging, Information, and Media Sector MIN Minimum Min Minor MIN Mobile Identification Number MIN Mobile Identity Number MIN Multiple Interaction Negotiation service element (OSI/VT) MIN Multistage Interconnection Network MINCM Management Intelligent Network Conceptual Model MINE Microbial Information Network for Europe MINIT Minimum Interference Threshold MIO Multistationary Inclined Orbits MIP Maintenance in Progress MIP Maintenance Interface Protocol MIP MCI ISN (Intelligent Services Network) Platform MIP Mobile IP MIPPS Micro Integrated Project Planning System MIPS Management Information Protocol Specification MIPS Mega Instructions Per Second MIPS Microprocessor Without Interlocking Pipe Stages MIPS Millions of Instructions Per Second MIR Management Information Repository MIR Maximum Information Rate MIR Microinstruction Register MIRS Motorola Integrated Radio System MIS Machine Instruction Set MIS Management Information Services MIS Management Information System(s) MIS May I Send MIS Mechanized Interface Specification MIS Metal Insulator Silicon (IC Technology) MIS Microcode Instruction Sequencer MIS Miscellaneous MIS Miscellaneous Equipment Frame MIS Multimedia Information Service MISC Miscellaneous MISD Management Information Service Definition MISD Multiple Instructions Single Data MISD Multiple-Instruction Single-Data MISFET Metal, Insulator, Semiconductor Field-Effect Transistor MISM Mismatch MIS-MLHG Management Information System for Multiline Hunt Group MISSI Multi-Level Information Systems Security Initiative MIT Management Information Tree MIT Massachusetts Institute of Technology (USA) MITE Modem Interface to Ethernet MITI Massachusetts Information Turnpike Initiative MITI Ministry of International Trade and Industry (US) MITS Macintosh ISDN Terminal Simulator MIU Maintenance Interface Unit MIU Memory Interface Unit MIU Mimimum Investment Unit MIU Multistation Interface Unit MIX Modem Interface to Xlbus ASIC MIXER MIME Internet X.400 Enhanced Relay MJ Major MJD Modified Julian Date MJPEG Motion JPEG MJU Multipoint Junction Unit MK ISO country code for Macedonia (former Yugoslav Republic of) MK Mouse Key MKR Marker MKR MarKeR-beacon MKS Metre, Kilogram, Second (system of measurement) MKS Mortice Kern Systems MKV MasterKey Vector ML ISO country code for Republic of Mali ML Machine Language ML Maintenance Limit ML Managed Links (GNS-BT) ML Matching Loss ML Maximum Latency ML Maximum Length ML Maximum Likelihood ML Message Length ML Message Link ML MetaLanguage MLA Microprocessor Language Assembler MLA Microwave Link Analyser MLA Modern Language Association MLA Multiline Addressing MLAMP MADN Lamp MLAP MAC Level Access Protocol MLAP Metallic Line Access Port MLB Multilayer Board MLB Multi-Line Business MLC MPC, Link, and Conversation Number MLC Multi-Layer Ceramic (Capacitor) MLC Multi-Line Card MLC Multilink Control Field MLCS MegaLink Channel Procedure MLD Mean Logistic Delay MLD Median Lethal Dose MLDA Multiple Listing Directory Assistance MLE Medium Local Exchange MLE Message-List Editing MLE Microprocessor Language Editor MLE Mobile Link Entity (TETRA) MLF Management Leadership Forum MLG Multiline Group MLH Multiline Hunt(ing) MLHG Multiline Hunt Group MLHG-I ISDN Multiline Hunt Group MLI Message Link Interface MLI MultiLeaving Interface MLI Multilink Irregularity MLID Multiple Link Interface Driver MLIPS Mega Logical Inferences Per Second MLL Mode-Locked Laser MLLE Medium Large Local Exchange MLM Multi-Level Metal MLM Multi-Longitudinal Mode MLMR Maximum Likelihood Multiuser Receiver MLNR Motorola Lab Non Res MLOC Multiple Locations Resource Finder MLP Multi-Layer Perception MLP Multilayer Protocol MLP Multilink Procedure(s) MLP Multiple License Pack MLP Multiple Line Printing MLP Multiple Link Procedure MLPP Multi-Level Precedence and Preemption MLPPP Multilink PPP ML-PPP Multilink Point-to-Point Protocol MLQ Message Length Qualifier MLR Mechanized Line Record MLR Multiple Line Reading MLRD Modified Long Route Design MLS Microwave Landing System (Avionics) MLS Modulated Light Source MLS Multilayer Switching MLS Multilevel Secure MLS Multilevel Security MLS Multiline Selection MLS Multilingual Listing Services MLS Multiple Listing Service MLSD Maximum Likelihood Sequence Detection MLSE Maintenance Loop Signalling Entity MLSE Maximum Likelihood Sequence Estimation MLSE Maximum Likelihood Sequence Estimator MLSO Mode-Locked Surface-Acousticwave Oscillator MLT Mechanized Line Testing MLT Mechanized Loop Test MLT Mechanized Loop Tester MLT Mechanized Loop Testing MLT Median Lethal Time M-LT Metropolitan area network-Line Termination MLTERM Multiline Hunt Group Terminal MLTERM Multiline Hunt Group Terminal Number MLTERMTYP Multiline Hunt Group Terminal Type MLTS Microlevel Test Set MLTS Multiline Telephone Set MLU Multi Line Unit MLV Marne La Vallee MLVP Multiline Variety Package MM DDOC Section: Man-Machine Interface MM ISO country code for Myanmar MM Man Machine MM Man-Month MM MannMonate MM Mapping Mode MM Mate Manager MM Meet Me MM Meeting Minutes MM Meetingless Meeting MM Memory Manager MM Message Mode MM Messaging Manager mm Millimeter(s) mm millimetre MM Mismatch MM Mixed Mode MM Mobility Management MM Mobility Manager Mm Modem MM Multi Mode (Fibre Optics) MM Multimedia MM Multimode MMA MIDI Manufacturers Association MMA Multiple Message Alerting MMAB Multimedia Applications Base MMB Man Made Busy MMB Middle Mouse Button MMBN Multimedia Broadband Network MMBS MultiMedia Base Station MMC Man-Machine Communication MMC Meet-Me Conference MMC Meet-Me Conference (supplementary service) MMC Microsoft Management Console MMC Microwave/Millimeterwave Components MMC Mobile Multimedia Communications MMC Monolithic Multicomponents Ceramic MMC Monopolies and Mergers Commission MMC Multimedia Collaboration MMC Multimedia Multiparty Conferencing MMCD Multimedia Compact Disc MMCF Multimedia Communications Forum MMCS Multimedia Carrier Switch MMCX Multimedia Call Exchange MMCX MultiMedia Communications Exchange MMD Multimedia MMDS Microwave Multipoint Distribution System MMDS Multichannel Microwave Distribution Service MMDS Multichannel Multipoint Distribution Service MMDS Multichannel Multipoint Distribution System MMDS Multichannel, Multipoint Distribution System MME Mobile Management Entity MME Multi-Modal Estimation MMEI Management to Managed Element Interface MMES Maritime Mobile Earth Station MMF Magneto-Motive Force MMF Microsoft Mail File MMF MSS Management Function MMF Multimode Fiber MMFS Manufacturing Messaging Format Standard (MAP) MMG Motorola Multimedia Group MMgr Messaging Manager MMH Maintenance Man-Hours MMI Machine-to-Machine Interface MMI Man-Machine Interaction (interface) MMI Man-Machine Interface MMIC Monolithic Microwave Integrated Circuit MMIC Monolithic Millimeter-wave IC MMIO Multimedia I/O MML Maker Markup Language MML Man-Machine Language MML Multimedia Module Library MMM Multi Media Multiplexer MMM Multimedia Mail MMM Multiunit Network Management and Maintenance message MMN Multimedia Network MMO Mobile Module MMP Maintenance Modem Pool MMP Memory Management Process MMP Mobility Management Protocol MMP Module Message Processor MMP Multichassis Multilink PPP MMPM Multimedia Presentation Manager MMPM/2 Multimedia Presentation Manager/2 MMPP Markov Modulated Poisson Process MMPT Mismatch Path Trace MMR Modified Modified Reed MMRL Multimedia Resource Layer MMRM Multimedia Resource Manager MMS Manufacturing Message Service/Specification MMS Manufacturing Message Services (EWOS) MMS Manufacturing Message Specification MMS Manufacturing Messaging Service (MAP) MMS Message Management Service MMS Message Management Subsystem MMS Mini-Micro Systems (periodical) MMS MMCS Management System MMS Modified Monitoring State MMS Module Management System MMS 43 Modified Monitoring State 4B/3T MMS43 Modified Monitoring State 4B/3T MMSE Minimum-Mean-Squared Error MMSL Mismatch Signal Label MMSRK Mismatch Between Sent and Received K-Bytes MMSS Maritime Mobile Satellite Service MMSU Modular Metallic Services Unit MMTA Multimedia Telecommunications Association MMTF Mobile Management Task Force MMTS Manual Mobile Telephone System MM-TSC Messaging Management Technical Subcommittee MMU Memory Management Unit MMU Metered Message Unit MMU Multi-Message Unit MMUI Multi Media User Interface MMUM Miscellaneous Multiunit Message MMUSR MMU Status Register MMVF Multimedia Video File MMVI Multimedia Voice Interface MMW Millimeterwave Microwave MMX Multimedia Extensions MN ISO country code for Mongolian People's Republic (Mongolia) MN Matched Node MN Metropolitan Area Network Node MN Microwave Network MN Minor MN Mobile Node MN U.S. postal code for Minnesota MNA Multiple Network Appearance MNAC Message Network Access Code MNAS Multinetwork Access Services MNC Meridian Network Control MNC Mobile Network Code MNC Multiplicative Noise Compensator MNCC Meridian Network Control Centre MNCL Maintenance NCL MNIC Mobile Network Identification Code M-NIU Multiple Dwelling Network Interface Unit MNL Maintenance Noise Limit MNL Network Layer (Layer 3)-Management Entity Interface MNLP Mobile Network Location Protocol MNOS Metal-Nitride-Oxide Semiconductor MNP Microcom (Inc.) Network Protocol MNP Microcom Networking Protocol MNP Microcomputer Networking Protocol MNP Multicontrol Networking Platform MNP Multi-Network Protocol MNRP Mobile Network Registration Protocol MNRU Modulated Noise Reference Unit MNS Managed Network Solutions MNT Maintenance M-NT Metropolitan area Network-Network Termination MO ISO country code for Macau MO Magneto-Optical MO Managed Object MO Master Oscillator MO Message Object MO Message Objectizer MO Message-Oriented MO Mobile Originated MO U.S. postal code for Missouri MO EOC Message-Oriented Embedded Operations Channel MO&O Memorandum Opinion and Order MOA Managed Object Agent MOA Manager of Object Adapters MOA Manual Outgoing Allowed MOA Mobitex Operators Association MOB Memory-Order Buffer MOB Mobile Mobitex Swedish mobile data standard MOC Maintenance and Operations Console MOC Managed Object Classe(s) MOC Ministry of Communications MOC Mobile Originating Call MOC Mobile-Originated Call MOC Multiproduct Operations Controller MOCROM MicrO-Coded Read-Only Memory MOCS Managed Object Conformance Statement MOCVD Metal Organic Chemical Vapor Deposition (GaAs VHSIC Process) MOD Magnetic Optical Disk MOD Manual Outgoing Denied MOD Ministry Of Defence (UK) MOD Modem MOD Modify MOD MODulator MOD Module MOD Modulo MOD Modulus MOD Movies On Demand MODEL manufactures cordless portable part model identity code MODEM MOdulator/DEModulator MODFET MOdulation-Doped Field-Effect Transistor MODWB Module Designers Workbench MOF Managed Object Format MOF Maximum Observed Frequency MOH Music On Hold MOHSOURCE Music On Hold Source MOL Maximum Output Level MOL Microsoft Open License MOM Maintenance and Operations Manual MoM Manager of Managers MOM Message-Oriented Middleware MOM Microsoft Office Manager MOM Mini Object Manager MOMA Message-Oriented Middleware Association MON Monitor MON MONitor MONA Meridian Off-Net Access MONET Mobile Networks MONET Multiwavelength Optical Network MOO MUD Object-Oriented MOOS Maintenance Out-of-Service MOOS Manual Out-of-Service MOOSE Metrics for Object-Oriented Software Engineering MOP Mailbox Observer Proxy MOP Maintenance Observer Proxy MOP Maintenance Operation(s) Protocol MOP Method of Procedure MOPA Master Oscillator Power Amplifier MOPS Management Operations per Second MOPS Mega (Million) Operations Per Second MOPS Mega Operations Per Second MOPT Mean One-Way Propagation Time MOR Multi-Wavelength Optical Repeater MOS Maintenance Out-of-Service MOS Manager-Operator Services MOS Mean Opinion Score MOS Metal-Oxide Semiconductor MOS Model Output Statistics MOS Mux Out-of-Sync MOSFET Metal-Oxide Semiconductor Field-Effect Transistor MOS-FET Metal Oxide Semiconductor Field-Effect Transistor MOSI Master Out / Slave In MOSPF Multicast Extensions for OSPF MOSPF Multicast Open Shortest Path First M-OSPF Multicast Extensions for OSPF MOSS MIME Object Security Service(s) MOST Metamorphosis of Service Agent Team MOSY Managed Object Syntax Yacc-based (4BSD/ISODE SNMP) MOSY Managed Object Syntax-Compiler (YACC-Based) MOT Managed Object Under Test MOT Means of Testing MOTD Message of the Day MOTIS Message Oriented Text Interchange System (MHS/ISO) MOTIS Message-Oriented Text Interchange System MOTIS MOS Timing Simulator MOU Memorandum of Understanding MOU Minutes of Use MOV Metal-Oxide Varistor (VDR) MOV Move Instruction MOVCC Multi Open Via Chip Carrier (VLSI Package) MOVPE Metal Organic Vapor Phase Epitaxy MOX Multiple Over/Underlay Extension MP ISO country code for Northern Mariana Islands MP Machine Processable MP Machine Processable Form MP Machine-Processible MP Main Processor MP Management Platform MP Management Process MP Managing Process MP Master Position MP Master Processor MP Math Present MP Measuring Point MP Memory Protect MP Metallised Paper MP Micro-Processor MP Modem Pool MP Modulation de Phase MP Modulation Parameter MP Module Processor MP Monitor Coprocessor MP Multilink Point-to-Point Protocol MP Multilink PPP MP Multilink Protocol MP Multiparty MP Multipoint MP Multipoint Processor MP Multiprocessing MP Multiprocessor MP MultiProgramming MP Multipurpose MP Multipurpose Position MP/M MultiProgramming CP/M MP+ Multilink Protocol Plus MP3 MPEG-2 audio stream layer-3 compression MPA Magellan Passport Access MPa MegaPascal MPA Modular Power Adapter MPA Modulating Power Amplifier MPA Multi-PTN Attendant (supplementary service) MPAC Multichannel PAC MPB Multi-Party Bridging MPBAC Multiple Port Bus Access Circuit MPBT Modem Pool Busy Time MPC Maintenance Process Control MPC Maintenance Processing Control MPC Message Protocol Card MPC Message Protocol Circuit MPC Message-Passing Coprocessor (Multibus 2) MPC MPOA Client MPC Multi Purpose Controller MPC Multimedia Personal Computer MPC Multimedia Planning and Coordination (ETSI STC) MPC Multiparty RTP Transport Connection MPC Multiple Protocol Capability MPC MultiProCessing MPC Multi-Protocol Client MPC Multiprotocol Controller MPCC MultiProtocol Communications Controller MPCM Multi-Part Class Manager MPCNET Multi-Protocol Controller Network MPD Maximum Permissible Dose MPD Message Processing and Dispatch MPD Message Processing and Dispatching MPD Midnights Passed Digit MPD Miniport Driver MPD Model-Pane-Dispatcher MPD Multiple Path Detector MPDA Meridian Programmable Data Adapter MPDC Meridian Power Distribution Center MPDRAM Multiport DRAM MPDU Message Protocol Data Unit MPE Maximum Permissible Exposure MPE Multi-Point Extension (IEEE 802.3) MPE Multi-Programming Executive (Hewlett Packard Inc. Computer Operati ng System) MPE Multiprotocol Encapsulation MPEC MultiPulse Excited Coding MPEG ISO/IEC Moving Pictures Experts Group MPEG Motion Pictures Experts Group MPEG Motion/Moving Picture Experts Group MPEG Moving Picture Experts Group MPEG Moving Pictures Experts Group MPEG-1 Motion Picture Experts Group 1 MPEG-2 Motion Picture Experts Group 2 MPEG-3 Motion Picture Experts Group 3 MPEG-4 Motion Picture Experts Group 4 MPE-LPC Multipulse Excited Linear Predictive Coding MP-EOC Multipoint Embedded Operations Channel MPER Maintenance Procedural Error Rate MPF Mapping Field MPF Multiprocessing Features MPG Managing Personal Growth MPG MPEG File MPG Multiplayer Games MPG-Net Multi-Players Games Network MPH (mobile) Management (entity)- PHysical (layer) [primitive] MPH Miles Per Hour MPH Multi-Physical MPH Multiple Position Hunt MPH Multi-Position Hunt MPH Physical Layer (Layer 1)-Management Entity Interface MPH- communication between Management and Data Link layer MPHT Modem Pool Holding Time MPI Message Passing Interface MPI Minimum Picture Interval MPI Multiple Protocol Interface MPK Mission Park MPK Multiprocessing Kernel MPL Multischedule Private Line MPLC Modem Pool Line Card MPLH Multiple Port Link Handler MPLPC Multipulse Linear Predictive Coding MP-LPC Multipulse Linear Predictive Coding MPLS Multiprotocol Label Switching MPM Master Processor Memory MPML Meta-Phone Markup Language MP-MLQ Multipulse Excitation with a Maximum Likelihood Quantizer MPNS Managed Private Network Service (GNS-BT) MPOA Multiprotocol Over ATM MPOL Multi-Protocol Over LANs MPP Massively Parallel Processing MPP Massively Parallel Processor MPP Message Posting Protocol MPP Microsoft Project file MPP Multichannel Point-to-Point Protocol MPP Multilink Point-to-Point Protocol mp-p Multipoint-to-Point MPPC Microsoft Point-To-Point Compression MPQ Multi-Processor Queue MPR (Swedish national board for measurement and testing) MPR Misdialed Trunk Prefix message MPR Modular Power Rectifier MPR Multi Protocol Router MPR Multiple Provider Router MPR Multiprotocol Router MPR Multi-Purpose Riser MPROM Mechanized Power Room Operations Monitor MPRT Master Primary Reference Terminal MPRT Modem Pool Reservation Time MPS Maximum Packet Size MPS MDII: Address Signaling Error- Misplaced Start MPS Medium Power Satellite (...250 Watt) MPS MicroProceSsor MPS Minimal Part Set MPS Model/Policy Split MPS Modular Power Shelf MPS MPOA Server MPS Multi-Page Signal MPS Multiple Priority System MPS Multipriority System MPS Multi-Processor Specification MPSC Multi Protocol Serial Controller MPSK Multiple Phase Shift Keying MPSP Marketing/Product Strategic Plan MPSR Mechanical Product Status Review MPSR Multipath Self-Routing MPT Ministry of Post and Telegraph MPT Ministry of Posts and Telecommunications MPT Multiple PIN Table MPT Multipoint to Point Tree MPT Multiport Protocol Tester MPT 1327 UK Trunked Radio Standard MPT1 Measurement Point MPTM Multi-Party Test Method MPTN Multiprotocol Transport Networking MPTS Multi-Protocol Transport Services MPTY Multiparty MPTy Multiparty MPTY Multi-ParTY (supplementary service) MPU Main Processing Unit MPU MicroProcessor Unit MPU Micro-Processor Unit MPV Message Protocol Version MPVCB Multipoint Video Conference Bridge MPWD Machine-Prepared Wiring Data MPX Composite Demodulated Stereo Multiplex (Signal) MPX multiplex MPX Multipurpose Extended MPXC Multipoint Cross-Connection MPX-IWS Multipurpose Extended Intelligent Workstation MPyT Multi-Party Testing MPyTM Multi-Party Testing Methodology MQ ISO country code for Martinique MQ Message Queuing MQA Multiple Queue Assignment MQFP Metric Quad Flat Pack MQI Managed Queueing Interface MQI Message Queue Interface MQW Multi Quantum Well (Laser Diodes) MQW Multiple Quantum Well MQW Multi-Quantum Well MR ISO country code for Islamic Republic of Mauritania MR Magnetic Resonance MR Magnetoresistive MR Magneto-Resistive MR Mandatory Requirement MR Manual Request MR Measured Rate MR Meeting Room MR Message Rate MR Message Receiver MR Message Register MR Message Router MR Microid Research MR Mobile Router MR Modification Request MR Modified READ (Relative Element Address Designate) MR Multicast Router MRA Message Rate Area MRA Multirate Area MRA Mutually Restricted Access MRB Management Request Broker MRBLR Maximum Receive Buffer Length Register MRC Maximal Ratio Combining MRC Monthly Recurring Charge MRCA Most Recent Common Ancestor MRCC Maritime Rescue Coordination Centre MRCF Microsoft Real-Time Compression Format MRCI Microsoft Real-Time Compression Interface MRCS Meeting Reservation and Control System MRD Manual Ring Down MRD Master Recognition Database MRD Message Rate Detailed MRD Message Retrieval Display MRD Modified Resistance Design MRDF Machine-Readable Data Files MRDX Multiple Rate Digital Switch MREG Message Register MREL MADN Release MRF MADN Ring Forward MRF Maintenance Restart Function MRF Message-Refusal signal MRFF Master Reference Frequency Frame MRFM MADN Ring Forward Manual MRG Modification Request in Generic MRI Machine-Readable Imaging (Medical) MRI Magnetic Resonance Imaging MRI Microtec Research Inc. MRJ Mac OS Runtime for Java MRL Match Recognition Latch M-RLCM Mini-Remote Line Concentrating Module MRLE Match Recognition Latch Enable MRLM Mate Remote Line Module MRM Message Receiver Manager MRM Message Resource Monitor MRM Most Recently used Master MRM Motif Resource Manager Mrm Motif Resource Manager MRN Mobile Routing Number MRP Materials and Resource Planning (MAP) MRP Mouth Reference Point MRQ automatic Repeat reQuest with Memory MRRC Mobile Radio Resource Control MRRU Maximum Reconstructed Receive Unit MRS Magneto-Resistive Sensor MRS Maintainable Resource Surrogate MRS Message Rate Service MRS Mobile Radio Stack (TETRA) MRS Mobile Radio System MRS Module Resident Software MRSA Message Rate Serving Area MRSE Message Retrieval Service Element MRSE Microwave Remote Sensing Experiment MRSE Mode Request Signalling Entity MRSG Mobile Radio Study Group MRT Magnetic Resonance Tomography MRT Mean Repair Time MRT Medical Response Team MRT Message Rate Timed MRT Message Routing Table MRT Model Reference Testing MRTD Maximum Resolvable Temperature Difference (Thermometry) MRTD Message Rate Timed/Detailed MRTIE Maximum Relative Time Interval Error MRTO Memory Reference Time Out MRTR Mobile Radio Transmit Receive MRTT Mobile Radio Training Trust MRU Maximimum Receive Unit MRU Media Resource Unit MRU Modular Recording Unit MRU Most Recently Used MRUA Mobile Radio Users Association MRV MTP Routing Verification MRVA MTP Routing Verification Acknowledgement MRVR MTP Routing Verification Result MRVT MTP Routeing Verification Test MRVT MTP Routing Verification Test MRX Message Routing Exchange (DECnet) MS ISO country code for Montserrat MS Main Station MS Management Server MS Management Service(s) MS Management System MS Master Station MS Master-Slave MS Measured Service MS Measurement Signal MS Media Sensor MS Memory System MS Message Service(s) MS Message Store MS Message Switch MS Message Switching MS Message System MS Microsoft MS MicroSoft ms millisecond ms Millisecond(s) MS Mission Slice MS Mobile Service MS Mobile Station MS Mobile Subscriber MS Mode Sifter MS Mode Sifting MS Most Significant MS Multiplex Session MS Multiplexer Section MS U.S. postal code for Mississippi MS6E Message Switching 6 Equipment MS7E Message Switching 7 Equipment MSA Message Status Area MSA Message System Agent MSA Metropolitan Service Area MSA Metropolitan Serving Area MSA Metropolitan Statistical Area MSA Mobile Serving Area MSA Multiplex Section Adaptation MSAA Microsoft Active Accessibility MSAC Meridian Services Attendant Console MSACM Microsoft Audio Compression Manager MS-AIS Multiplex Section AIS MSAL Media Services Access Layer MSAL Multimedia Service Access Layer MSAP MAC Service Access Point MSAP Medium Access Control Service Access Point MSAP Mini-Slotted Alternating Priority MSAP Mobile Services Application Part MSAP Multi-Services Application Platform MSAT Mobile Satellite MSAU Multistation Access Unit MSB Make Set Busy MSB Message Switch and Buffer MSB Most Significant Bit MSB Most Significant Bit MSB Most Significant Byte MSB Most-Significant Bit (byte) MSB6 CCS6 Message Switch and Buffer MSB6 Message Switch and Buffer 6 MSB7 CCS7 Message Switch and Buffer MSB7 Message Switch and Buffer 7 MSBI Make Set Busy Intragroup MSBL MLHG Special Billing MSBLN MLHG Special Billing Number MSBVW Magnetostatic Backward Volume Wave MSC Main Switching Centre MSC Maintenance Service Charge MSC Management Service Component msc Marked Section Close MSC Message Sequence Chart MSC Message Switch (Central) MSC Message Switching Center MSC Message Switching Concentration MSC Microsoft C MSC Mobile Services Switching Center MSC Mobile Switching Center MSC Mobile Switching Centre MSC Modem Shelf Controller MSC Most Significant Character MSC Mouse Systems Corporation MSC Multislot Cell MSCDEX Microsoft CD-ROM Extension MSC-H Home MSC MSCM Mobile Station Class Mark MSCP Mass Storage Control Protocol MSCP Mean Spherical Candle Power MSCP Mobile Service Control Point MSCS Microsoft Clustering Server MSCU Message Switch Control Unit MSCU Mobile Station Control Unit MSC-V Visited MSC MSD Mass Storage Device MSD Microsoft Diagnostics MSD Modifier Service Directory MSD Most Significant Digit MSD Multi Standard Decoder (Television) MSDC Message Sending Control MSDEV Microsoft Developer Studio MSDL Microsoft Download Service MSDL Multi-Purpose Serial Data Link MSDN Microsoft Developer Network MS-DOS Micro-Soft (Inc.) Disk Operating System MS-DOS Microsoft Disk Operating System MSDRA Master-Slave Dynamic Rate Access MSDSE Maritime Satellite Data Switching Exchange MSDSE Master Slave Determination Signalling Entity MSDSE Mobile Satellite Data Switching Exchange MSDT Multi-Services Distant Terminal MSDTP Message Services Data Transmission Protocol MSE Maintenance Sub-Entity MSE Mean Squared Error msec Millisecond MSED Minimum Signal Element Duration MSEE Master of Science and Electronic Engineering MSF Message MSF Mobile Serving Function MSF Mobile Storage Function MSF Multiscan Function MS-FERF Multiplex Section FERF MSFM Multistandard Fast Modem MSFT Municipal, State, and Federal Tax MSFVW Magnetostatic Forward Volume Wave MSG Management Steering Group MSG Message MSG MeSsaGe MSGB Monitoring Service of Great Britain MSGCH Message Channel MSGS Message Switch MSH Most Significant Half Word MSH Multi-Service Hub MSI Manufacturer Specific Information MSI Medium-Scale Integration MSI Mobile Subscriber Identity (TETRA) MS-I ISDN Message Service(s) MSID Mobile Station Identity MSIE Microsoft Internet Explorer MSIN Mobile Station Identification Number MSIN Mobile Subscriber Identity Number MSIP Maintenance System Interaction Protocol MSIR Minimum Signal-to-Noise Interference Ratio MSISDN Mobile Station International ISDN Number MSISDN Mobile Station ISDN Number MSISDN Mobile Subscriber ISDN Number MSISDN Mobile SUbscriber Intergrated Services Digital Network (Mobile GSM ) MSJ Microsoft Systems Journal MSJ The Main Street Journal MSK Minimum Shift Keying MSK Minimum Shift Keying (direct phase shifting of laser diode) MSL Manual Stocklist MSL Maximum Segment Lifetime MSL Mean-Squared Loss MSL Meridian SL-100 MSL Meridian Stored Logic MSL Microsoft Software Library MSL Module Structure List MSL-1 Meridian SL-1 MSLS Most Significant-Least Significant msm Market Segment Manager MSM Memory/Space/Memory MSM Microwave Switching-Matrix MSMC Media Stimulated Mass Calling MSMQ Microsoft Message Queue MSN Meridian SuperNode MSN Meridian Switched Network MSN Message Sequence Number MSN Message Switch Network MSN Mobile Subscriber Number MSN Mobility Support Network MSN Most Significant Nibble MSN Multiple Subscriber Number MSN Multiple Subscriber Number (supplementary service) MSN Multi-Service Network MSN The Microsoft Network MSNDS Microsoft NDS MS-NET Microsoft Networks MSNF Multiple-system Network ? MSNF Multi-System Networking Facility MSO Management Support Object MSO Multiple Service(s) Operator MSO Multiple System Operator MSOH Multiplex Section Overhead MSP Maintenance Service Provider MSP Management Service Provider MSP Master Service Processor MSP Master Stack Pointer MSP Message Security Protocol MSP Message Switch Processor MSP Microsoft Paint MSP Microsoft Solution Provider MSP Modifier Service Participant MSP Modular Supervisory Panel MSP Multichassis Synchronization Protocol MSP Multiplex Section Protection MSP Multiplex Shared Protection MSP Multiserver Processor MSP Multi-Service(s) Platform MSP Multi-Tech Supervisory Protocol MSPP Message Switch Peripheral Processor MSPS Mega Samples Per Second MSPU Message Switch Peripheral Unit MSQ Mean Square MSQS Multistage Queue Status MSR Machine State Register MSR Management System Review MSR Message Send and Receive MSR Message Storage and Retrieval MSR Microsoft Research MSR Mobile Service Region MSR Mobile Serving Region MSR Mobile Support Router MSR Modular Square Root MSRID Message Storage and Retrieval System Identification MSRN Mobile Station Roaming Number MSRP Manufacturer's Suggested Retail Price MSRS Message Storage and Retrieval System MSRT Message Switch Routing MSS Maintenance Spare Storage MSS MAN Switching System MSS Maritime Satellite System MSS Mass Storage Subsystem MSS Mass-Storage System MSS Maximum Segment Size MSS Member of Scientific Staff MSS Metropolitan area network Switching System MSS Mobile Satellite Service MSS Mobile Satellite System MSS Mobile Support Station MSS Multimedia System Services MSS Multiple SMP Support MSS Multiprotocol Switched Services MSS Multi-Spectral Scanner MSSC Message Switch Simplex Cabinet MSSC Mobile Satellite Switching Centre MSSE Message Submission Service Element MSSF Mate Scanner Stop Failure MSSI Mid-Span Spectral Inversion MSSI Mid-System Spectral Inversion MS-SPRING Multiplexer Section Shared Protection Ring MSSW Magnetostatic MST Maintenance State Table MST Marconi Systems Technology MST Message Sequence Thread MST Minimum Spanning Tree MST Mountain Standard Time MST Multiple Service Terminal (RACE) MST Multiplex Section Termination MST Multi-Service Terminal MSTCM Multiple Store Types Class Manager MSTE Multiplex Section Terminating Equipment MSTP Multiple Spanning Tree Protocol MSTR Maximum Sustained Transmission Rate MSTV Maximum Service Television MSU Maintenance Signal Unit MSU Management Signal Unit MSU Message Service Unit (NetView) MSU Message Signal Unit MSU Metallic Services Unit MSU Mobile Subscriber Unit MSU Multiblock Synchronization Unit MSU Multiple Signal Unit MSU Multipoint Signaling Unit MSUX Mass-Storage Unit specifier MSV Major Software Vendor MSV MTX Service Code Dialing MSV Multiple Speed Variant MSVC Meta-Signaling Virtual Channel MSVC Microsoft Visual C++ MSVC MTX Service MSVC++ Microsoft Visual C++ MSVCI Metasignaling Virtual Channel Identifier MSVI Metasignalling Virtual Channel Identifier MSW Machine Status Word MSW Microsoft Windows MSW Most Significant Word mswm Microsoft Windows Windows Manager MSX MicroSoft (Inc.) eXtended basic MSX Mobile Services Exchange MSYNC Master Synchronization MT ISO country code for Republic of Malta MT Machine Translation MT Magnetic Tape MT Maintenance MT Management Tool MT Measured Time MT Mechanical Transfer MT Message Transfer MT Message Type MT Mobile Terminal MT Mobile Terminated MT Mobile Termination MT MultiThread MT Multi-Threaded MT U.S. postal code for Montana MT (0,1,2) Mobile Termination MT&T Maritime Telegraph and Telephone Company MTA Mail Transfer Agent MTA Mail Transport Agent MTA Maintenance Set Allowed MTA Major Trading Area MTA Message Transfer Agent MTA Message Transport Address MTA Message Transport Agent MTA Metallic Test Access MTA Multimedia Terminals and Applications MTAC Mathematical Tables and other Aids to Computation MTAE Message Transfer Agent Entity MTAE Metallic Test Access Equipment MTAE Multi Terminal ASCII Emulator (IBM) MTAR Multiple Terminal Address Registration MTAS Maintenance Trunk Access System MTAU Metallic Test Access Unit MTB Metallic Test Bus MTBB Mean Time Between Breakdowns MTBCF Mean Time Between Component Failures MTBCF Mean Time Between Critical Failures MTBD Mean Time Between Degradations MTBDL Mean Time Before Data Loss MTBE Mean Time Between Errors MTBF Mean Time Between Failures MTBF Mean Time Between Faults MTBI Mean Time Between Interruptions MTBO Mean Time Between Outages MTBO Mean Time Between Overhauls MTBP Mean Time Between Pointers MTBSO Mean Time Between Service Outages MTC Magnetic Tape Cartridge MTC Magnetic Tape Center MTC Magnetic Tape Controller MTC Main Transit Center MTC Maintenance MTC Maintenance Task MTC Maintenance, Timing, and Control MTC Master Test Component MTC Matrix-to-Cross-Thread Index MTC Mini Test Cycle MTC Mobile Terminating Call MTC Mobile-Terminated Call MTCB Maintenance Base MTCE Maintenance MTCELIMD Maintenance Limited MTCK Maintenance Check MTCNF Meet Me Conference Circuits MTCP Mobile Transmission Control Protocol MTCSI Maintenance Software Interface MTCT Multi-Test Case Table MTCXO Mathematically Temperature-Controlled Crystal Oscillator MTD Magnetic Tape Drive MTD Maintenance Set Denied MTD MDII: Address Signaling Error- Mutilated Digit MTD Memory Technology Driver MTE Meridian Terminal Emulation MTE Metallic Test Equipment MTE Module Test Equipment MTEX Multi-Tasking Executive MTF Master Trouble File MTF Microsoft Tape Format MTF Modulation Transfer Function MTG Main Traffic Group MTG Multi-Tasking Graphics MTI Moving Target Indicator (radar) MTIE Maximum Time Interval Error MTL Message Transfer Layer MTL Message Transfer Layer (X.400) MTL Montreal MTL Multichannel MTM Maintenance Trunk Module MTM Milestone Task Manager MTM Miscellaneous Trunk Module MTM Mobile-To-Mobile MTM Mobile-To-Mobile (call) MTM Module Test and Maintenance MTMP Magnetic Tape Maintenance Package MTN Mega Transport Network MTNJ Morristown, New Jersey MTNN Multi-Telecommunications-Network Navigation MTO Multitraffic Office MTOPS Million Theoretical Operations Per Second MTP Magnetic Tape Processor MTP Master Time Plan MTP Message Transfer Part MTP Message Transfer Part (of ITU-T Signalling System No. 7) MTP Mobile Transport MTP Multicast Transport Protocol MTP Multimedia Transport Protocol MTP2 Message Transfer Part 2 MTR Mean Time to Repair MTR Metering MTRP Magnetic Tape Read and Print Program MTRS Message Transport and Routing Service MTS Manitoba Telephone Services MTS Manitoba Telephone System MTS Mechanized Translations System MTS Member of Technical Staff MTS Message Telecommunications Service MTS Message Telephone Service MTS Message Transfer Service MTS Message Transfer Service (X.400) MTS Message Transfer System MTS Message Transmission Subsystem MTS Message Transport System MTS Methods for Testing and Specification MTS Methods for Testing and Specification (ETSI TC, former ATM) MTS Michigan Terminal System MTS Microsoft Transaction Server MTS Mobile Telephone Service MTS Multichannel Television Sound MTSE Message Transfer Service Element MTSE Multiplex Table Signalling Entity MTSO Mobile Telecommunications Switching Office MTSO Mobile Telephone Switching Office MTSP Mag Tape Summary Program MTSR Mean Time to Service Restoral MTT Mobile Test Terminal MTT Multi-Transaction Timer MTTD Mean Time To Diagnose MTTF Mean Time To Fail MTTF Mean Time To Failure MTTFF Mean Time To First Failure MTTR Mean Time To Repair MTTR Mean Time To Restore MTTS Meridian Text Telephony System MTTSR Mean Time To Service Restoral MTTY Maintenance TTY MTU Magnetic Tape Unit MTU Maintenance Terminating Unit MTU Maintenance Termination Unit MTU Maximum Transfer Unit MTU Maximum Transmission Unit MTU Maximum Transmittable Unit MTU Maximum Transport Unit MTU Metallic Test Unit MTU Mobile Terminating Unit (TETRA) MTU Multiline Test Unit MTU Multiport Transceiver Unit MTUP MCI TUP MTV Mountain View MTV Move-To-Vacant MTV Music Television MTWX Mechanized Teletypewriter Exchange MTX Matrix MTX Mobile Telephone Exchange MTX Multiplexor Session MTX Multiplexor Transactor MU ISO country code for Mauritius MU Mark Up MU Memory Unit MU Message Unit MU Missed or Unprocessed MU Mobile User Mu Muenztelefon (Payphone) MU Multidestinational Unidirectional MU Multiple Directional, Unidirectional MU Multipoint Unit MUA Mail User Agent MUA Maintenance Group Unblocking Acknowledgement Signal MUAG Military Users Advisory Group MUB Multi-Use Bearer MUBS Multi-Use Bearer Service MUBW Minimum Usable BandWidth MUD Memory Usage Database MUD Multiple User Dialogue MUD Multiple User Dimension MUD Multiple User Dungeon MUD Multi-User Domain MUF Maximum Usable Frequency (Short Wave Propagation) MUF Maximum Useable Frequency MUFASA Multiple-FPGA Alternative SIMBA Architecture MUI Multimedia User Interface MULDEM Multiplex/Demultiplex MULDEX Digital Multiplexer Plus Demultiplexer MULDEX MULtiplexer-DEmultipleXer MULE Minimal USES List Enforcement MULTICS Multiuser Interactive Computer System MUM Multi-Unit Message MUMPS Massachusetts General Hospital Utility Multi-Programming System MUMPS Massachusetts general hospital Utility MultiProgramming System MUMR Multiunit Message Rate MUMS Multi User Mobile Station MUMS Multiprocessor Utility and Monitoring System MUP Management of User Ports MUP Millenium Update Program MUPID MultiUse Programmable Intelligent Decoder MUS Music MUSA Multiple-Unit Steerable Antenna MUSC Multi User Signaling Channel MUSE Multiple Sub-Nyquist Sampling Encoding MUSE MUltiple sub-nyquist Sampling Encoding (HDTV) MUSE Multi-User Shared Environment MUSE Multi-User Simulation Environment MUSH Multi-User Shared Hallucination MUSI Macintosh/UNIX Systems Integration MUSICAM Masking-pattern adapted Universal Sub-band Integrated Coding And M ultiplexing MUT Master Upper Tester MUT Mean Up Time MUT Modem Under Test mutex Mutual Exclusion MUX MUltipleX (multiplexer) MUX Multiplexer MUX MUltipleXer MUX time MUXtiplexor MUX1.2 Signalling MUltipleX Mode 1 (two-bit signalling) MUX1.4 Signalling MUltipleX Mode 1 (four-bit signalling) MUX2 Signalling MUltipleX Mode 2 MUX3 Signalling MUltipleX Mode 3 MV ISO country code for Republic of Maldives MV Machine Vision MV Mandatory Variable Length MV Market View mV Millivolt(s) MV Motion Vector MVAS Multi-Vendor Application Support+B3857 MVC Manual Volume Control MVC Model-View-Controller MVC Multivendor Capability MVC Multivendor Capacity MVCC Metasignaling Virtual Channel Connection MVD Motion Vector Data MVDM Multiple Virtual DOS Machine MVDS Microwave Video Distribution Service MVDS Microwave Video Distribution System MVDS Multipoint Video Distribution System MVFS Multiversion File System MVGA Monochrome Video Graphics Array MVI Multiple-Vendor Interface MVI Multi-Vendor Interactions MVIP Multi-Vendor Integration Protocol MVM Meridian Voice Mail MVME Motorola VME MVN Multimedia Virtual Network MVP Multiline Variety Package MVP Multimedia Video Processor MVP Multiple Vendor Program MVP1D Multiline Variety Package 1-Digit MVP1NL Multiline Variety Package 1-Digit Number List MVP1SH Multiline Variety Package 1-Digit Shared List Owner MVP2D Multiline Variety Package 2-Digit MVP2NL Multiline Variety Package 2-Digit Number List MVP2SH Multiline Variety Package 2-Digit Shared List Owner MVPSH1 Multiline Variety Package Shared 1-Digit MVPSH2 Multiline Variety Package Shared 2-Digit MVR Multiple Virtual Router MVS Multiple Virtual Storage MVS Multiple Virtual System MVS Multipoint Video Service MVS Multipoint Videoconferencing Service MVS/ESA Multiple Virtual Storage/Extended System Architecture MVS/TSO Multiple Virtual Storage /TSO (IBM) MVS/XA Multiple Virtual Storage/Extended Architecture MVSt Muttervermittlungsstelle (parent exchange for foreign connection) MVT MoVemenT MVT Multiprogramming with a Variable Number of Tasks MW ISO country code for Republic of Malawi MW MW Medium Wave (500...1600 kHz) MW Message Waiting MW Microwave MW Milliwatt Test Line mW Milliwatt(s) MW Multilink Window MW Multiwink MW Multiwink Signaling MWB Monitoring Workbench MWBL Milliwatt Balanced Line MWC Message Waiting Center MWC Multi-Way Call MWC Multi-Way Calling MWCAM Multi-Way Calling for Analog Member of EKTS MWI Message Waiting Indication MWI Message Waiting Indicator MWIC Message Waiting Indicator Control MWICB Message Waiting Indicator Control Billing Records MWID Message Waiting Indicator Deactivation MWIDACC Message Waiting Indicator Deactivation Access Code MWIDB Message Waiting Indicator Deactivation Billing Records MWIDC Message Waiting Indication MWIDGID Message Waiting Indicator Control Default Group Identifier MWIMAX Maximum Number of Outstanding MWI Control Requests MWINUM Number of Message Waiting Indicators Assigned MWL Message Waiting Lamp MWLC Modular World Line Card MWM Motif Window Manager mwm Motif Window Manager MWN Message Waiting Notification MWP Message Waiting Point MWPT Message Waiting Point MWPTAM Message Waiting Point for Analog Member of EKTS MWQ Message Waiting Query MWQRY Message Waiting Query MWT Message Waiting MWT Message Waiting Tone MWTN Multiwavelength Transport Network MX ISO country code for United Mexican States (Mexico) MX Mail Exchange MX Mail Exchanger MX Mixed MX MultipleXor MXM Misaligned Access Enable MXR Multiplexer MXRVO Multiple Transmit/Receive Virtual Overhead MXU Message Transfer Unit MY ISO country code for Malaysia MY Man-Year MZ ISO country code for People's Republic of Mozambique MZ Mark Zbikowski back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M - N - O|P|Q|R|S|T|U|V|W|X|Y|Z

n nano (10-9) N Negative N Network N Network Layer N Network Layer Service N Neutral conductor N newton N Nibble N No N Node N Noise N None N Normal N North n Number (short or int) N(R) Receive Sequence Number N(R) transmitter receive sequence number N(S) Send Sequence Number N(S) transmitter send sequence number N(S)N National (Significant) Number N/A Not Applicable N/A Not Available N/C Normally Closed N/C Numerical Control N/I Noise to Interference Ratio N/O Normally Open N/S Not Supported N/W Network N1 Maximum number of bits in an X.25 frame as defined in Recommendation X.25, § 2.4.8.5 (LAPB) N11 N11 Trigger N11SC N11 Service Codes N1X75 X.75 Parameter N1 (Maximum Number of Bits in an InformationFrame) N2 Maximum Number of Attempts to Complete a SuccessfulTransmission, L APB N2 Maximum number of attempts to complete a transmission N200 LAPD Number of Retransmittals Before Recovery Procedure N200P LAPD Number of Retransmittals Before Recovery Procedure, for PRI N2X75 X.75 Parameter N2 (Maximum Number of Attemps to Complete aTransmis sion) N6 Number 6 Signaling N6TU Number 6 Signaling Test Unit NA ISDN Calling Name Identification Services NA ISO country code for Namibia NA National NA Network Access NA Network Adapter NA Network Address NA Network Architecture NA Network Aspects (ETSI TC) NA Night Alarm NA No Assurance NA North America NA North American NA Not Accessible NA Not Applicable NA Not Available NA Numerical Aperture NAA Node Administrator Application (DSA-Bull) NAAD Nortel Access Authentication Daemon NAAG North American Architecture Guild NAB National Association of Broadcasters (USA) NAB Netscape Application Builder NABER National Association of Business and Educational Radio NABTS National Association of Broadcast Transmission Standards NABTS North American Basic Teletext Specification NAC Network Access Corporation NAC Network Administration Center NAC Network Administrative Center NAC Network Attendant Console NAC Node Access Control NAC Node Administration Card NAC Non-Area Code NACD Network Automatic Call Distribution NACD Networked Automatic Call Distribution NACK Negative Acknowledgement NACK No ACKnowledgment NACN North American Cellular Network NACP North Atlantic Consultative Progress (CEPT-FCC) NACS Network Asynchronous Communication Server NACS No Active-Channel Selector NAD Network Access Device NADC North American Digital Cellular NADC Not-Acceptable Data Code NADF North American Directory Forum NAE Network Address Extension NAFIN Netherlands Armed Forces Integrated Network NAFTA North American Free Trade Agreement NAG Node Assessment Graph NAG Numerical Algorithms Group NAIS Network Access Interface Specification NAK Negative Acknowledge NAK Negative Acknowledgement NAL Network Access Line NAL Not Allowed NAL Novell Application Launcher NAM Network Access Method NAM Network Access Module NAM Number Assignment Module NAMA North America Mobile Association NAMAS National Measurement Accreditation Service NAMF North American Multifrequency NAMPS Narrowband Advanced Mobile Phone Service NAMPS Narrowband Advanced Mobile Phone System N-AMPS Narrowband Advanced Mobile Phone System NAMTYP Name Delivery Type NAN Neighborhood Area Network NAN Network Access Node NAN Norton Administrator for Networks NAN Not a Number NaN Not a Number NAN Not-a-Number NANA ASZ National Operator Signal message NANA CBK National Clearback message NANA EHZ National Onhook Signal message NANA GRQ National General Request message NANA GSM National General Forward Setup Information message NANA IDE National Identification End message NANA IDF National Identification message NANA RAN National Re-Answer message NANC North American Numbering Council NANOG North American Network Operators' Group NANP North American Numbering Plan NANPA North American Numbering Plan Administration NANPA North American Numbering Plan Administrator NAP Network Access Point NAP Network Access Provider NAP Network Adjunct Peripheral NAP Network Agent Protocol NAP Network-Access Protocol NAP Normal Approval Procedure (ETSI) NAPI Numbering and Addressing Plan Indicator NAPI Numbering/Address Plan Identifier NAPLP North American Presentation Layer Protocol NAPLPS North American Presentation Layer Protocol Syntax NAR Name and Reason NARC Node Aspect Return Code NARC Non-Automatic Relay Center NARP NBMA Address Resolution Protocol NARRG North American Repair and Remanufacture Group NARS Network Access Registers NARS Network Alternate Route Selection NARUC National Association of Regulatory and Utility Commissioners NAS Netscape Application Server NAS Network Access Server NAS Network Access Signaling NAS Network Administration System NAS Network Analysis System NAS Network Application Support NAS Network Applications Services NAS Network Applications System NAS Network Attendant Service NAS Nominal Aggregate Signal NAS North American Standard NASA National Aeronautic and Space Administration (USA) NASC 800 Number Administration and Service Center NASI NetWare Asynchronous Services Interface NASNA National Association of State Nine-One-One Administrators NASP Network Application Service Part NASS Network Access Signalling System NAT NATural unit of information control, information content natural u nit NAT Network Address Translation Nat Network Address Translator NATA North American Telecommunications Association NATO North Atlantic Treaty Organisation NATOA National Association of Telecommunications Officers & Advisors NATS National Air Traffic Services NATS North American Terrestrial System NATTA Not AT&T Anymore NAU Network Access Unit NAU Network Addressable Unit (SNA) NAU Network-Accessible Unit NAV Net Allocation Vector NAV Network Allocation Vector NAV Network Applications Vehicle NAV Norton AntiVirus NAWS Negotiate About Window Size NAXLAR North American Translations and Routing NB Narrowband NB Network Buffer NB New Band NB Non-Blocking NB Normal Burst NB Nota Bene (Mark Well) NB Postal code for New Brunswick NBBS Networking BroadBand Services NBC National Broadcasting Company Inc. (USA) NBC Network Bearer Channel NBC Number of B-Channels NBCCTOEDN Number of On-Demand B-Channels Per Call Type Per OE/DN NBD Next Business Day NBDG New Business Development Group NBEC Non-Bell Exchange Carrier NBF NetBEUI Frame NBF CP NetBIOS Frames Control Protocol NBFCP NetBIOS Frames Control Protocol NBFM Narrow Band Frequency Modulation NBH Network Busy Hour NBI Northern Business Information NBIN A parameter in the hopping sequence NBL Notification Busy Limit NBLH Network Blockage Heavy Traffic Treatment NBLN Network Blockage Normal Traffic Treatment NBM National Backward Message NBMA Non-Broadcast Multiple Access NBMS Nortel Business Management System NBN Nonblocking Network NBNS NetBIOS Name Server NBO Network Build-Out NBOC Network Build-Out Capacitance NBOR Network Build-Out Resistance NBS National Bureau of Standards (USA, now NIST) NBS New British Standard NBSS Nortel Base Station Subsystem NBSV Narrow Band Secure Voice NBT NetBIOS Over TCP/IP NBTel New Brunswick Telephone NBTR Narrow Band Tape Recorder NBU Nortel Business Unit NBVM Narrow Band Voice Modulation NC ISO country code for New Caledonia NC National Committee (CEN) NC Netscape Communicator NC Network Channel NC Network Cluster NC Network Computer NC Network Computing NC Network Congestion NC Network Connect(ion) NC Network Control NC Network Controller NC Network Crosspoint NC No Circuit NC Normally Closed NC Normally Closed (Switch/Relay Contacts) NC Not Connected NC Number Complete indication NC Numerical Control NC U.S. postal code for North Carolina NCA Network Computing Architecture (IBM) NCA No-Circuit Announcement NCA Non-Call Associated NCAP Number of Call Appearances NCAPI Netscape Client API NCAR National Center for Atmospheric Research NCAS Non-Call-Associated Signaling NCB NetBIOS Control Block NCB Network Control Block NCC National Color Code NCC National Computer Conference (USA) NCC National Computing Center (UK) NCC National Computing Center for OSTC NCC National Co-ordination Centre NCC Network Centric Computing NCC Network Colour Code NCC Network Communications Corporation NCC Network Control Center NCC Network Coordination Centre NCC New Common Carrier NCC Public Land Mobile Network Colour Code NCCD Network dependent Call Connection Delay NCCE Novell Collaborative Computing Environment NCCF Network Communication Control Facility (NetView) NCCF Network Communications Control Facility NCCI Network Call Correlation Identifier NCCI Network Control Center Interface NCCI New Common Carrier Interface NCCL Network Controlled Coin Line NCCR Non-Continuous Coverage Region NCCU North Carolina Central University NCD Network Call Distributor NCD Network Computing Devices NCD Non-Check Dummy Character NCDA No Call Delivery Activatable NCDA No Call Delivery Activation N-CDMA Narrowband CDMA NCE Network Connection Endpoint NCE Nomadic Computer Environment NCEG Numerical C Extensions Group NCEITA North Carolina Electronics and Information Technologies Associatio n NCELL Neighbouring (or current serving) CELL NCF National Communications Forum NCF Netware Configuration File NCF Network Control Facility(ies) NCFU Network Call Forwarding Universal NCG Network-side Command Generator NCGA National Computer Graphics Association (USA) NCGN Calling Name NCGN North Carolina GigaNet nCgPC National Calling Party Category NCHO Network Controlled Handover NCI Network Channel Interface NCI Network Component Interface NCICS Networked Call-Independent, Connection-Oriented Signalling NCID Network Clear Indication Delay NCIH North Carolina Information Highway NCIL Network Controlled Inmate Line NCL Neighbor Cell List NCL Network Control Language (IBM) NCL Non CM Load NCL Novatel Communications Ltd. NCLK Network Clock NCM Network Channel Manager NCM Network Cluster Member NCMS Network Connection Management Subprotocol (ISO) NCNL Network Controlled Non-Coin Line NCO Network Camp-On NCO Network Control Office NCO Numerically Controlled Oscillator NCON Connected Name NCOP Network Code Of Practice (ETSI) NCOS Network Class of Service NCOSE National Council on Systems Engineering NCP NetWare Core Protocol NCP Network Control Point NCP Network Control Processor NCP Network Control Program (SNA) NCP Network Control Protocol NCP Network Controller Processor NCPAS Network Control Point Administration System NCR National Cash Register Company NCR Network Completion Reports NCR Network-generated Call Reference NCR No Circuit Available, Circuit Request Left NCR Non-Call Related NCR Null Call Reference NCREN North Carolina Research and Education Network NCRT No-Circuit Route Treatment NCS National Communication(s) System NCS Network Clock Synchronization NCS Network Combiner and Switching NCS Network Computing System (Apollo) NCS Network Control Station NCS Network Control System NCS Network Coordination Station NCS NORTEL Communications Systems NCSA National Center for Supercomputing Applications NCSA National Computer Security Association NCSC National Computer Security Center NCSI Network Communications Services Interface NCSK Network-Controlled Soft Key ncsl Non-Commentary Source Lines NCSU North Carolina State University NCT Network Control and Timing NCT Night Closing Trunk NCT No Call Transfer NCTA National Cable Television Association NCTC Network Configuration Tracking Capability NCTE Network Channel Terminating Equipment NCU NEAT Communication Unit NCU Node Control Unit NCUG National Centrex User Group NCWV Noncall Work Volume ND Neighbor Discovery ND Network Equipment Building System Data ND Non-Directional (antenna) ND Nortel Dasa ND Number Delivery ND U.S. postal code for North Dakota NDA National Directory Assistance NDA Network Design and Analysis Corp. NDA Non-Disclosure Agreement NDAC No Data ACcepted (IEEE-488 Bus Signal) NDB Network Data Base NDB Network Database NDB Network-Determined Busy NDB Non Directional Beacon NDBM New Database Manager NDC National Destination Code NDC Network Data Collection NDC Network Destination Code NDC No Double Connect NDC Normalized Device Coordinates NDCOS Network Data Collection Operations System NDD Network Diagnostic Division NDES Normal Digital Echo Suppressor NDF New Data Flag NDFA Non-Dedicated File Area NDFSM Non-Deterministic Finite State Machine NDIS Network Device Interface Specification NDIS Network Driver Interface Specification NDL Natural Database Language NDL Non-Defined Customer Location NDLC Non-Data-Link Console NDM Network Data Model NDM Network Data Mover NDM Normal Disconnected Mode NDN National Data Number NDN Non-Delivery Notification NDP Numeric Data Processor NDPS NetWare Distributed Print Services NDPS Nondisruptive Path Switch(ing) NDPS Nonstandard Default Packet Sizes NDPS Novell Distributed Print Services NDR Network Data Representation NDR Non-Delivery Report NDR Non-Destructive Read NDRO Non-Destructive Read Out NDS NetWare Directory Services NDS Network Data System NDS Novell Directory Services NDS1 Number of DS1 Facilities NDSE National Data Switching Exchange NDSF Non-Dispersion-Shifted Fiber NDT Net Data Throughput NDT No Dial Tone NDT Non-Destructive Testing NDU Network Data Unit NDUB Network-Defined User Busy NDVA Network Design & Validation Authority NDW Norton Desktop for Windows NDWS Nonstandard Default Window Sizes NE ISO country code for Republic of the Niger NE Near End NE Negotiated Exit NE Network Element NE Network Entity NE Network Equipment NE New Executable NE Northeast NE Northern Electric NE Not Equal To NE Numeric Error NE Numeric Exception NE U.S. postal code for Nebraska NEA NEtwork Architecture (Siemens) NEA Non-Equal Access NEAB NEA User Layer Protocol (Siemens) NEAN NEA Network Layer Protocol (Siemens) NEAT Network Evaluation and Test System NEATE NEA Transport Layer Protocol (Siemens) NEB Netscape Extension Builder NEBE Near End Block Error NEBS Network Equipment-Building System NEBSFR Network Equipment- Building System Family of Requirements NEC National Electrical Code NEC National Electronics Conference NEC Nederlands Elektrotechnisch Comite (NL) NEC New Entrant Carrier NEC Nippon Electric Comp. (JAP) NEC Northern Electric Company NECA National Exchange Carrier Association NECM Network Element Configuration Management NECOS Network Coordinating Station NECQ National Electronic Components Quality NECRD NEC Reasearch and Development (periodical) NECS Network Element Capability Specification NECTI Network Enabled Computer Telephony Integration NED National ETSI Delegation NEDT Network Editor Tools NEED Nodal End-to-End Data message NEF Network Element Function NEF/CA Network Element Function/Capability Assignment NEFA Near End Failure NEG Negative NEGT Near End (Initiator) Global Title NEGX Negate with Extend (680x0 inst) NEI Network Element Interface NEI Network Entity Identifier NEI Network Equipment Identifier NEIT Negative Enhanced Imaging Technology NEK Norsk Elektroteknisk Komite (N) NEL Network Element Layer NEL Next Event List NEL Next Line NELB Near-End Loopback NEM Network Element Management NEM Network Event Monitor (Bell) NEMA National Electrical Manufacturers Association (USA) NEMA Network Element Memory Administration NEMAC Network Management and Control NEMESYS Network Management Expert System NEMKO Norwegian Board for Testing and Approval of Electrical Equipment NEMOS Network Management Operations System NEMP Nuclear ElectroMagnetic Pulse (EMI) NEMS Network Executive Message Service NEMW Network Executive Message Waiting NENA National Emergency Number Administrators NEO Network Objects NEO Networked Objects NEOFF Near-End Office Nep NailedUpEndPoint NEP Noise Equivalent Power NEPC Near End (Initiator) Point Code NEQ Not Equipped NERA National Economic Research Associates NERVE Network Evaluation, Reporting and Verification NES Network Encryption System NES Non-Expanded Spectrum NESAC National Electronic Systems Assistance Center NESC National Electrical Safety Code NESP Near End (Initiator) Signalling Point NEST Novell Embedded Systems Technology net Major network support centers domain NET Network NET New England Telephone NET Norme Européenne de Télécommunication NET Null End-Tag NETBEUI NETBios Extended User Interface (IBM) NetBIOS Network Basic Input/Output System NETBLT Network Block Transfer NETC Network Combined NETC Network Evaluation and Test Center NETCGID Network Customer Group Identifier NETD Noise-Equivalent Temperature Difference (Thermometry) NETG National Educational Training Group NETI Network Management International NETID NETwork IDentification (SNA) NetLS Network License System NETM Network Maintenance NETMATE NeETwork Management Analysis and Testing Environment NETRAG Network Ring Again NETS Nationwide Emergency Telecommunications Service NETSTAR Network Subscriber Transaction and Recording System NEV Network Event NEW Establish service NEWACD Establish new Automatic Call Distribution set NEWDN Assign block of DNs, RCF Newi New World Infrastructure NEWRO New Responsible Organization NEWS NetWare Early Warning System NEWS Network Error Warning System (Net/Master, IBM) NeWS Network-Extensible Window System NEXT Near-End Crosstalk NF ISO country code for Norfolk Island NF Nested Flag NF Network Function NF Node Function NF Noise Factor NF Noise Figure NF Normal Frame NF Not Found NF Notch Filter NF NUI Format NF Postal code for Newfoundland NFA Network Facility Access NFA Network File Access (MAP/TOP- upper 3 layers from IBM, Intel, Micr osoft) NFA Nondeterministic Finite Automaton NFAS Non-Facility Associated Signaling NFE Network Facilities Extension NFE New Front End NFET N-Channel Junction Field-Effect Transistor NFF Neutral File Format NFF No Fault Found NFI Network Function Identification NFM National Forward Message NFM Network File Manager NFOEC National Fiber Optic Engineering Conference NFOS Near Field Optical Scanning NFP Nonpreemptive Fixed Priority NFP Note Format Parameter NFPA National Fire Protection Association NFR Near-Field Recording NFS Name File System NFS Network File System (SUN) NFY Notify NG ISO country code for Federal Republic of Nigeria NG Newsgroup NG Next Generation NG Noise Guard NG Non-Gating NG Number Group NGDLC Next-Generation Digital Loop Carrier NGI Next Generation Internet NG-IDLC Next Generation Integrated Digital Loop Carrier NGIS Next Generation Information System NGLC New Generation Line Circuit NGN Next Generation Network(s) NGN Next Generation Node NGN-CS NGN Call Server NGN-MSH NGN Multi-Services Hub NGO Nongovernment Organization NGP Next Generation Products NGS Next Generation Switch NGSO Non-Geostationary Satellite Orbit NH National Host NH Network Header NH U.S. postal code for New Hampshire NHB Non-Hard-Blocking NHC Negative High Current NHC Next Hop Client NHC NHRP Client NHD Networking Hardware Division NHK Nippon Hoso Kyokai NHLF Network High Level Function NHLFE Next Hop Label Forwarding Entry NHN Non-Hunt Terminal NHOB Non-specific Hierarchical Operational Binding NHRP Next Hop Resolution Protocol NHRP Next Hop Routing Protocol NHS Next Hop Server NHS NHRP Server NHT No Hazard Test NHTML Netscape HTML NI ISO country code for Republic of Nicaragua NI National Indicator NI National ISDN NI Network Identifier NI Network Identity NI Network Indicator NI Network Interconnect NI Network Interconnection NI Network Interface NI Network Inventory NI New Instructions NI No Impact NI No Increase NI Non-Interlaced NI Normalized Indicator NI Notification Indicator NI Number Incomplete Indicator NI-1 National ISDN-1 NI-2 National ISDN-2 NI-3 National ISDN-3 NIA Network Information Appliance NIA Network Interface Adapter (OSI-SNA) NIA Number of Initial Address NIB Negative Impedance Booster NIB Network Indicator Bit NIC National ISDN Council NIC Near-Instantaneous Companding NIC Nearly Instantaneous Companding NIC Negative Impedance Converter NIC Network Independent Clock NIC Network Independent Clocking NIC Network Information Center NIC Network Interface Card NIC Not In Context NIC2S Network-Intensive Computing and Communicating Systems NiCad Nickel Cadmium NICAM Near-Instantaneous Companded Audio Multiplex NICAM Nearly-Instantaneous Companded Audio Multiplex NICC Network Interoperability Consultative Committee NICE Network Information Control Exchange (DECnet protocol) NICE Nonprofit International Consortium for Eiffel NID Network Identifier NID Network Interface Device NID Network Inward Dialing NID Next IDentification NIDL Network Interface Definition Language NIF Neighborhood Information Frame NIFC Netscape Internet Foundation Classes NIFE Near Inhibition Far Excitation NIH National Institutes of Health NIH Not Invented Here NIHCL National Institutes of Health Class Library NII National Information Insfrastructure (USA) NII Network Independent Interface NIIF Network Interconnection & Interoperablity Forum NIIT National Information Infrastructure Testbed NIK Nickelodeon NIL Network Interface Layer (DPA) NIM Network Install Manager NIM Network Installation Maintenance NIM Network Interface Module NIM Number of Inherited Methods NiMH Nickel-Metal-Hydride NIN Network Interface Node NIN Nortel Information Network NINT Network INTerception (supplementary service) NIOAG National ISDN Operations Advisory Group NIOD Network Inward and Outward Dialing NIP Network Identification Plan NIP Network Integrated Processing NIP Network Intelligence Platform NIP Next Instruction Pointer NIP Non-Impact Printer NIR Network Information Retrieval NIS Name Information Service NIS Network Information Service NIS Network Information System NIS Network Interface Specification NIS Northern Telecom Interface Specification NIS Not In Service NIS+ Network Information Services Plus NISC Network Information Service Center NISDN Narrowband ISDN NISDN National ISDN N-ISDN Narrow Integrated Services Digital Network N-ISDN Narrowband ISDN n-ISDN Narrowband ISDN N-ISDN Narrow-band ISDN NISI Network Information Service Infrastructure NISL Network Interface SubLayer (NIL) NISO National Information Standards Organization NISP National Internet Service Provider NIST National Institute for Standards and Technology (US) NIT Network Interface Tap NIT Network Interoffice Transmission NIT Non-Initializing Terminal NITEC Northern Ireland Telecommunications Engineering Center NITS National ISDN Technical Subcommittee NIU Network Interface Unit NIUF National ISDN Users' Forum NIUF North American ISDN Users' Forum NIU-Forum North American ISDN Users' Forum NIUG National IGES User Group NIW Network Interworking NIX Node Identifier Exchange NIXCR Notification of Incoming X.25 Call Request NJ U.S. postal code for New Jersey NJC Network Junctor Connecting NJE Network Job Entry NKP MDII: No Key Pulse NKRO N-Key-Roll-Over NKT Nederlands Keuringsinstituut voor Telecommunicatieapparatuur (NL) NL Call Control-Network Layer (Layer 3) Interface nl Internet country code for the Netherlands NL ISO country code for Kingdom of the Netherlands NL Native Language NL Network Layer (OSI) NL Network Link NL New Line NL Niederlassung (Branch Office) NL Noise Limiter NL Non Listed NL Non-Loaded NLA Non-Linear Amplified NLC Negative Low Current NLC Number of Logical Channels NLCB Network Link Control Block NLCM New LCM NLDM Network Logical Data Manager (NetView) NLDM Normalized Logical Data Model NLFPR Non Linear Fabry-Perot Resonator (optical transistor) NLM National Library of Medicine (USA) NLM NetWare Loadable Module NLM Network Level Management NLM Network Link Module NLM Network Lock Manager NLM Number of Local Methods NLMS Normalized Least Mean Square NLO New Licensed Operator NLOS Non-Line-of-Sight NLP Natural Language Processing NLP Nonlinear Processor NLP Nonlinear Program NLPID Network Layer Protocol Identifier NLPS Network Listener Protocol Service NLQ Near Letter Quality NLQP Near Letter-Quality Printer NLR Network Layer Relay NLR Noise Load Ratio NLR Non Linear Resistor NLRI Network Layer Reachability Information NLS National Language Support NLS Nonlocking Shift NLSE Nonlinear Schrodinger Equation NLSP NetWare Link Services Protocol NLSP Network Layer Security Protocol NLSS Non-Locally Switched Special NLST Non Listed Name NLT No Line Insulation Testing NLTS Network Load Test System nm Nanometer(s) NM Nautical Mile NM Network Management NM Network Manager NM Network Module NM Noise Margin NM Notification Manager NM Notification Message NM U.S. postal code for New Mexico NMA Network Management Application NMA Network Message Analyzer NMA Network Monitoring and Administration NMA Network Monitoring and Analysis NMAS Network Management System NM-ASE Network Management Application Service Element NMB Network Management Busy NMB Number of Macroblocks NMC Network Management Center NMC Network Message Controller NMC Network Model Coverage NMC Network Module Controller NMC Networked Multimedia Connection NMC New Media Center NMC Nortel Matra Cellular NMCS Network Management and Control System NMCT Network Management Co-ordination Team (ETSI, proposed) NME Network Management Entity NME Network Management Equipment NME Network Media Engine NME Norton Mobile Essentials NMF Network Management Forum NMFA Network Management Functional Area NMFUD Network Management Functional Unit Deployment NMG Network Measurements Group NMI Non-Maskable Interrupt NMIF Network Management Interface NMIS Network Management Interface System NML Network Management Layer NML Noise Maintenance Limit NML NM Listener (DECnet) NMLIS Native Mode LAN Interconnection Service NMM Network Management Module NMM Network-Management and Maintenance signal NMMW Near Millimeter Wave NMO Network Managed Object NMO Network Management Option NMOS N-channel Metal Oxide Semiconductor NMOS Network Management and Operations Support NMOSFET n-Type MOSFET NMP Network Management Position NMP Network Management Protocol (ATT) NMP No Modem Pool NMP NUC Management Process NMPF Network Management Productivity Facility NMPF NM Productivity Facility (NetView) NMPORT Network Module Port NMR Noise-to-Mask Ratio NMR Nuclear Magnetic Resonance NMS NetWare Management Services NMS NetWare Management System NMS Network Management Server NMS Network Management Services NMS Network Management Signal NMS Network Management Station NMS Network Management System NMS Network Management System/Network Management Station (Internet) NMS Network Message Service NMS Networked Multimedia System NMS Noise Measuring Set NMS Number of Message Sends NMSI National Mobile Station Identification NMSI National Mobile Station Identification number NMSI National Mobile Station Identity NMSI Nonmultiplexed Serial Interface NMSIG Network Management Special Interest Group NMSSDK NetWare Management System Software Development Kit NMT National Mobile Telecommunications NMT Nordic Mobile Telecommunications NMTI National Message Type Indicator NMTS Nordic Mobile Telephone System NMVT Network Management Vector NMVT NM Vector Transport (NetView-SNA) NMWI Network Message Waiting Indicator NN National Network NN National Number NN Nearest Neighbor NN Netscape Navigator NN Network Node (SNA-IBM) NN Neural Network NN Node Number NN1 Next Name 1 NN2 Next Name 2 NN3 Netscape Navigator Version 3.0 NNC National Network Congestion message NNC National Network Congestion signal NND National Network Dialing NNI Nederlands Normalisatie Instituut (NL) NNI Nederlands Normalisatie-instituut NNI Network Node Interface NNI Network-to-Network Interface NNID Non-Adjacent Network Identifier NNM Network Node Manager NNM Number of New Methods NNR National Number Routed NNS NetWare Naming Service NNSC NSFnet Network Services Center NNSS Navy Navigational Satellite System NNTEM Neural Networks Traffic Enforcement Mechanism NNTP Network News Transfer Protocol no Internet country code for Norway NO ISO country code for Kingdom of Norway NO Normally Open (switch/relay-contacts) NO6 Number 6 Signaling NOA Nature of Address NOA Number of Attributes NOAA National Oceanic and Atmospheric Administration NOAA Network Operations Analyzer and Assistant NOAO National Optical Astronomy Observatories NoAP Narrowband over ATM Products NOB Network Operator Byte NOBCOEDN Number of On-Demand B-Channels Per OE/DN NOC Nature of Connection NOC Network Operating Centre NOC Network Operational Center NOC Network Operations Center NOC Number of Children NOCD Original Called Name NoCi Nature of Connection Indicator NOCS Network Operations Center System NOD Near-On-Demand NOD Network Operations Domain NOD Network Outward Dialing NODAN Noise-Operated Device for Anti-Noise NOET Network Operations Education and Training NOF Network Operations Forum NOF Node Operator Facility NOF Normal Operational Frames NOG Network Operators Group NOGAD Noise-Operated Gain Adjusting Device NOH Network Overhead NOH No Receiver Off-Hook Tone NOI Network Operator Interface (NAA-DSA-Bull) NOI Notice of Inquiry NOL Network Operations Layer NOLM Nonlinear Optical Loop Mirror NOM Network Order Management NOMS Network Operations and Management Symposium NOMS Network Operations Management Services (GNS-BT) NON-GSO NON-Geo Stationary Orbit NOP Network Operations Plan NOP Network Operations Protocol NOP No Operation NOP Number Of Packet NOPMD No Packet Mode Data NOR Normal NOR Not OR (function) NORC Network Operators RACE Committee (CEPT) NORC Network Operators Research Committee NOREC No Record NORGEN Network Operations Report Generator NORM Normal NORMA No Remote Memory Access NORTEL Northern Telecom NOS Network Operating System NOS Network Operations System NOS Next On Stack NOSC No Service Circuit NOSFER Nouveau Systeme Fondamental Europeen Reference pour laTransmission Telephonique NOSFER Nouveau Systeme Fondamental Pour la Determination desEquivalents d e Reference NOSR No Software Resource Treatment NOT Notification NOT RDY Not Ready NOTIFY Notify message NOTIS Network Operations Trouble Information System NOTRS No Terminal Responding NOU Network Operations Unit NOV News Overview NOVRAM NOn Volatile Random Access Memory NOW NAV Operations Workstation NOW Network of Workstations NP ISO country code for Kingdom of Nepal NP National Parameter NP Network Pause NP Network Performance NP Network Peripheral NP Network Port NP Network Processor NP Network Protocol NP Network Provided NP Network-Provided NP New Page NP Next Page NP No Prefix NP No Print NP No Pulse NP Node Processor NP Nondeterministic Polynomial NP Not Planned NP Notification Point NP Number Portability NP Number Privacy NP Number Private NP Numbering Plan NP ID Network Peripheral Identification NP&P Network Protection and Power NPA Numbering Plan Area NPAC Nortel X.25 Controller NPAC Number Portability Administration Center NPAI Network Protocol Address Information NPC Network Protocol Control (SNA/SAA) NPCI Network Protocol Control Information NPCS Narrowband Personal Communications Services NPD Network Protection Device NPD Numbering Plan Digit NPDA Network Problem Determination Application NPDA Network Problem Determination Application (NetView-IBM) npdgp No Padgroup NPDU Network Protocol Data Unit (OSI-NL) NPE Network-Protection Equipment NPE Numbering Plan Evolution NPG Network Product Group NPI Network Protocol Indicator NPI New Product Introduction NPI Null Pointer Indication NPI Number Plan Identification NPI Number Plan Indicator NPI Numbering Plan Identification NPI Numbering Plan Identifier NPI Numbering Plan Indication NPI Numbering Plan Indicator NPIAC Network Plug-In Administration Center np-ISMA Nonpersistent Inhibit Sense Multiple Access NPL National Physical Laboratory (UK) NPL Network Planning Letter NPM NetView Performance Monitor (IBM) NPM New Peripheral Module NPM New Product Module NPMA Nonpreemptive Multiple Access NPN Network Provider Network NPNB No-Primary/No-Backup NPO Negative/POsitive zero(-temperature-coefficient capacitor) NPO New Product Opportunity NPP Network Programming Platform NPR National Public Radio NPR Noise Power Ratio NPR Non-Primary Residential NPR Non-Processor Request NPRM Notice of Proposed Rulemaking NPRZ Non-Polarized Return-to-Zero (recording) NPS Network Processing System NPS Network Provisioning System NPS Network User Identification Profile Screening NPS Non-Payer Screening NPS Non-Prioritized Scheme NPS Northern Procurement Specification NPS NUI Profile Screening NPSC National Protocol Support Center NPSI NCP Packet Switching Interface NPSI Network Packet Switching Interface NPSI NPC Packet-Switched Interconnect (SNA/SAA) NPSR New Product Summary Report NPT Network Provided Tones NPT Non Programmable Terminal NPT Nortel Post and Telecommunications NPV Net Present Value NPX Numeric Processor Extension NQA Niveau de Qualite Acceptable NQWV Nonqueue Work Volume NR ISO country code for Republic of Nauru NR Network Ready NR Network Resume NR Nibble Register NR Normal Nr Nummer (Number) NR/CD Non-Reproducible CD NR0 Non-Reserved 0 NR1 Non-Reserved 1 NR2 Non-Reserved 2 NR3 Non-Reserved 3 NRA Network Remote Access NRA Network Routing Address NRA Non-Resident Area NRA Notrufamt (Emergency Bureau) NRAG Network Ring Again NRA-I NRA-International NRAM Nonvolatile Random Access Memory NRAs Notrufanschluss (Emergency Call Lines) NRC National Research Council of Canada NRC Network Reliability Council NRC Network Research Corporation NRC Network Routing Centre NRC Non-Recurring Charge NRC NoRestart Cutover NRDC Nashville Repair and Distribution Center NRDY Not Ready NRE National Reference Exchange NRE Negative Resistance Elements NRE Nonrecurring Engineering Cost NRED Redirecting Name NREN National Research and Education Network NREST Number Restrictions NRFD Not Ready For Data (IEEE-488 Bus Signal) NRIC Network Reliability and Interoperability Council NRIM Network Resource Information Model NRM Negotiated Rule Making NRM Network Reference Model NRM Network Resource Management NRM Network Resource Management message NRM Network Resource Manager NRM Normal Response Mode NRM Notrufmelder (Emergency Caller) NRM Number of Refined Methods NRMS Network Reference and Monitor Station NRN Network Routing Number Nrp NailedUpRelayPoint NRP Network Resource Planning NRPB National Radiological Protection Board NRS Network Reconfiguration Service NRS Network Resource Selection NRS Network Resource Selector NRS No Restart Swact NRS Novell Replication Services NRSC National Radio Systems Committee NRT Near Real Time NRT Nonreal Time NRT Notruftelefon (Emergency Call Telephone) NRTC National Rural Telecommunications Cooperative NRTL Nationally-Recognized Testing Lab nrt-VBR Non-Real-Time Variable Bit Rate NRU Network Resource Unavailable signal NRUM Number of Reused Methods NRV Named Return Value NRZ Non-Return to Zero NRZ Non-Return-to-Zero recording, NRZ-0 Non-Return-to-Zero change-on-zeros recording NRZ1 Non-Return to Zero Change at Logic 1 NRZ-1 Non-Return-to-Zero change-on-ones recording NRZ-C Non-Return-to-Zero Change recording NRZI Non-Return to Zero Inverted NRZL Non-Return to Zero Level NRZ-L Nonreturn to Zero-Level NRZ-M Non-Return-to-Zero Mark recording NS AT&T Network Systems NS Name Server ns nanosecond NS Netscape NS Network Series NS Network Service(s) NS Network Signaling NS Network Software NS Network System NS New Signal NS Night Service (supplementary service) NS No Answer Supervision NS No Screening NS Non-Standard NS Not Screened NS Not Specified NS Not Supported NS Postal code for Nova Scotia NS OA Network Surveillance Operations Application NS&C Network Surveillance and Control NS/CC Network Service/Control Centre NS/EP National Security/Emergency Preparedness NSA National Security Agency (USA) NSA Network Service Agent NSA Network Signaling Agent NSA Network Switched Access NSA Non-Service Affecting NSAI National Standards Authority of Ireland (IRL) NSAP Network Service Access Point NSAPA Network Service Attachment Point Address NSAPI Netscape Server Application Programming Interface NSC National Support Center NSC Network Service Center NSC Network Services Complex NSC Network Signaling Channel NSC Network Specialized Center NSC Network Speed Call NSC Network Speed Calling NSC Network Switching Center NSC Network Systems Corp. NSC Non-Standard facilities Command NSC Number Service Code NSC Number Services Code NSCS Network Service Center System NSCX Network Services Complex NSD Network Services Division (AT&T) NSD Network Systems Division NSDB Network and Services Data Base NSDN Night Service Directory Number NSDP Non-Signaling Data Protocol NSDU Network Service Data Unit (OSI-NL) NSE Network Services Engine NSE Network Software Environment NSE Network Switching Element NSE Nortel Standard English nsec Nanosecond NSEP National Security Emergency Preparedness NSERC Natural Sciences and Engineering Research Council of Canada NSET Network Switching Education and Training NSF National Science Foundation NSF Network Specific Facility(ies) NSF Non-Standard Facilities NSF Norges Standardiseringsforbund (N) NSFNET National Science Foundation Network (USA, connected to Internet) NSG Network Subgroup NSGR Network Systems Generic Requirements NSH Nashville NSI NASA Science Internet NSI Network Solutions, Inc. NSI Network Surveillance Interface NSIC Not In Service For Incoming Call NSK Norsk Standard NSL Net Switching Loss NSL Network Speech Link NSL Network-to-SLC NSL Number of Signaling Links NSLT Narrowband Subscriber Line Terminal NSM Netscape Server Manager NSM NetWare Services Manager NSM Network Services Management NSM Network Status Monitor NSMA National Spectrum Managers Association NSM-I Network Service Module for ISDN NSN National Significant Number NSN Network Switch Number NSO National Standards Organization (ETSI) NSO Notification Subscription Option NSP National Signaling Point NSP Native Signal Processing NSP Network Service Part NSP Network Service Participant NSP Network Service Point NSP Network Service Protocol (DNA) NSP Network Service Provider NSP Network Services Part NSP Network Services Protocol NSP New Services Prototyping NSP Not Sent-Paid NSPC National Sound-Program Center NSPMP Network Switching Performance Measurement Plan NSPS Node Support Software NSR Network Systems Release NSR Non-Source Routed NSS National Standard System NSS Network and Switching Subsystem NSS Network Service Solutions NSS Network Services Software NSS Network Services System NSS Network Statistics System (DSM-Tandem) NSS Network Subscriber Service NSS Network Subsystem NSS Network Support Sub-System (GSM term) NSS Network Support System NSS Network Surveillance System NSS Network Switching Subsystem NSS Network Switching System NSS Nodal Switching Subsystem NSS Non-Standard Set-up NSS Novell Storage Services NSSA Network Services and Software Applications NSSA Not So Stubby Area NSSC Network Services Surveillance Center NSSCDT NSS Carrier Dial Tone NSSD Network Support Systems Division NSSN National Standards System Network NSSOG Network Security Standards Oversight Group NSSR Non-Specific Subordinate Reference NSTAC National Security Telecommunications Advisory Committee NSTL National Software Testing Laboratory (USA) NSTN Non-Standard Telephone Number NSTS Network Services Test System NT ISO country code for Neutral Zone (obsolete) NT Nested Task NT Network Tailoring NT Network Termination NT Network Testing NT Network-Terminating Equipment NT New Technology (Windows) NT Non Transparent NT Nortel Networks NT Northern Telecom NT Postal code for Northwest Territories NT OA Network Testing Operations Application NT1 Network Termination- Type 1 NT1 Network Termination 1 NT-1 Network Termination- Type 1 NT12 Network Termination- Type 1 and 2 NT1B Network Termination 1 Broadband NT1PS NT1 Power Status Change NT1TM NT1 Test Mode Change NT2 Network Termination- Type 2 NT-2 Network Termination- Type 2 NTA National Telecommunications Alliance NTA Network Terminal Adapter NTA Network Termination Analog NTA Network Transport Address NTAAB New Type Approval Advisory Board NTACS Narrowband TACS N-TACS Narrowband TACS NTAS Windows NT Advanced Server NTB New Technology Building NTBA Network Termination Basic Access NTBS Null-Terminated Byte String NTC National Telecommunications Conference NTC National Telesystems Conference NTC National Television Center NTC NEAT Test Centre NTC Negative Temperature Coefficient NTC Negative Temperature Coefficient (Resistor) NTC Network Terminating Circuit NTC New Table Control NTCA National Telephone Cooperative Association NTD Network Technology Development NTD Network Toll Denied NTD Network Tone Detector NTD Network Topological Design NTE Network Terminal Emulator NTE Network Terminal Equipment NTE Network Terminating Equipment NTE Network Test Environment NTE Network Transport Element NTE Windows NT-Embedded NTF No Trouble Found NTFMT Northern Telecom AMA Format NTFS New Technology File System (Windows NT) NTFS Northern Telecom Federal Systems NTG Integrity Value NTG Network Transformation Group NTI Network Time Synchronization Agent NTI Noise Transmission Impairment NTIA National Telecommunications and Information Administration NTIS National Technical Information Service NTLM NT LAN Manager NTM Network Termination Maintenance NTM Network Tone Module NTM Network Traffic Management NTM NT Test Mode Indicator ntm NT Test Mode Indicator NTM NT1 Test Mode NTMBS Null-Terminated Multibyte String NTMF Network Traffic Management Forum NTMFT NT Meridian Feature Transparency NTMOS Network Traffic Management Operations System NTMSS Network Tone Module Service Supervisor NTM-U Universal Network Tone Module NTN National Telecommunications Network NTN National Terminal Number NTN Network Terminal Number NTN Network Terminating Number NTNAPRI Northern Telecom North American Primary Rate Interface NTOA Nortel NTOC Northern Telecom Object Center NTON National Transparent Optical Network NTONC National Transparent Optical Network Consortium NTP Network Termination Point (User Interface) NTP Network Time Protocol NTP Network Trouble Patterning NTP Normal Transmitted Power NTP Northern Telecom Practice NTPF Number of Terminals Per Failure NTPFC Northern Telecom Pacific NTRA Norwegian Telecommunications Regulatory Authority NTRAC New Technical Regulations Approval Committee (former TRAC) NTRAS New Technology Remote Access Services NTRS No Terminal Responding NTS NetWare Telephony Services NTS Network Test System NTS Network Time Synchronization NTS Network Tracking System (SNA)/Network Troubleshooting Consultant ( DEC) NTS Nodal Timing Supply NTS Non-Traffic Sensitive NTS Novell Telephony Services NTSA NetWare Telephony Services Architecture NTSC National Technical Supply Center NTSC National Television Standards Committee NTSC National Television System Committee (USA) NTSC National Television Systems Committee NTSC Network Test System Controller NTSC North American Television Standards Committee NTSC Notification Signaling Channel NTSIG Northern Telecom Signature NTT Nippon Telegraph and Telephone NTT No Test Trunk NTTA Network Terminating and Testing Apparatus NTTC National Technology Transfer Center NTTMP Network Trunk Transmission Measurement Plan NTTP Network Test and Termination Point NTTPC Nippon Telegraph and Telephone Public Corporation NTTRF NT Bellcore TR-Compliant Functional NTU National Technological University NTU NEAT Test Unit NTU Network Terminating Unit NTV Network Test Vehicle NTWCS Null-Terminated Wide-Character String NTWK Network NU ISO country code for Niue NU Nailed Up NU NUll NU Number Unavailable NU Number Unobtainable NU/NP Number Unavailable/Number Private NUA Network User Access NUB National Unsuccessful Backward Setup Information Message NUB Network Utility Box NUC Nailed Up Connection NUC Non-Upward Compatible NUC Nucleus NUD Neighbor Unreachability Detection NUG Network User Group NUI NetWare Users International NUI Network User Identification NUI Network User Identity NUI Network User Interface NUI Nodal User Interface NUI Notebook User Interface NUI NTELPAC User Identification NUIAPA NUI AP Address NUIAPAL List of NUI AP Addresses NUIAPCUG CUG Interlock Code for the AP NUIBPQHA NUI Backup PQH Address NUIDTEVP DTE NUI Validation Possible NUIN0 Threshold for NUI Fraud Control Alerting NUIN1 Threshold for NUI Deactivation NUIO Network User Identification Override Capability NUIOP Network User Identification Override Permission NUIPPQHA NUI Primary PQH Address NUIPQHCUG CUG Interlock Code for the PQH NUISCA NUI Selection on Call Acceptance NUISUI NUI Supplemental User Identification Acceptance NUIT0 NUI TO Time Interval NUIT1 NUI T1 Interval Timer NUITA1 NUI TA Time Interval NUIUVA User Validation of NUI Allowed NUIVCIC NUI Valid Card Issuer Codes NUIVH User Access Inconclusive NUI Validation Handling NUIVHIX75 Incoming X.75 Inconclusive NUI Validation Handling NUL Null NUM Numeric NUMA Non-Uniform Memory Access NUMC Number of Calls Allowed NUP Nailed Up NUP National User Part (of signalling system No7) NUPB Nailed Up B Channels NUPB Nailed-Up B-Channels for PMD NUR Not-Used-Recently NURBS Non-Uniform Rational B-Spline (CAD/CAE) NUS Number Search NUT Number Unobtainable Tone NUTS Non-Usage Trunk Scan NV Nonvolatile NV U.S. postal code for Nevada NVAS Network Voice Activated Services NVFS Network Virtual File System NVL Nashville NVLAP National Voluntary Laboratory Accreditation Program (USA) NVM Non-Volatile Memory NVOD Near Real-Time Video On Demand NVP Name-Value Pair NVP Network Voice Protocol NVP Nominal Velocity of Propagation NVRAM Non-Volatile Random-Access Memory NVS Non Volatile Storage NVT Network Virtual Terminal NVT Novell Virtual Terminal NW NetWare NW Network NW Northwest NW Not Write-Through NWC Native Window Control NWC Network Management Control NWCTP Network Connection Termination Point NWG Network Working Group NWI New Work Item (initial proposal of activity within ISO) NWK Network NWK Network Layer NWM Network Management NWML National Weights and Measurements Laboratory NWN Nationwide Wireless Network NWOF Network of the Future NWS Novell Web Server NWSAA NetWare for SAA NWT Network Technologies NWT Network Technology NWT Norstar, Wireless, and Terminals NWT Nortel World Trade NWTP Network Termination Point NWTTP Network Trail Termination Point NX64 Channelized N x 64 kbps NXCP Non-Crossthreaded Call Processing NXID Number Exchange Identification NXS MDII: No Expected Stop NXSP Network Transcoder Service Pack NXT Next NXTGRP Next Group NY U.S.postal code for New York NYBC May Not Yet Be Connected NYIT New York Institute of Technology NYNEX New York New England Exchange NYPS National Yellow Pages Service NYSE New York Stock Exchange NYSTA New York State Telephone Association NYT New York Telephone nz Internet country code for New Zealand NZ ISO country code for New Zealand back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N - O - P|Q|R|S|T|U|V|W|X|Y|Z

o Object Code O Objective o Oblique O Octal O Open O Optical O Optional O Order of O Other O Overflow O&M Operation(s) and Maintenance O/A Originate/Answer O/E Odd/Even O/E Optical-to-Electrical O/E Opto-Electronics O/G Outgoing O/P Outpulsing Utility O/P OutPut O/R Originator/Recipient O/S Operating System O/S Out-of-Service O+I Originating-plus-Incoming O+T Originating-plus-Terminating OA Object Adapter OA Office Automation OA Operand Address OA Operation Agent OA Operational Amplifier OA Operations Application OA Operator Assistance OA Operator Assisted OA Operator Attached OA Optical Amplifier OA Order Administration OA Outgoing Access OA Overflow Accept OA&M Operation, Administration and Maintenance OA&M Operation(s), Administration and Management OABU Operation Agent Back-Up OAC Operator Assisted Call OAC Opto Active Connector OACSU Off-Air Call Set-Up OAD Origination-Address Display OADM Optical Add/Drop Multiplexer OAF Origin Address Field OAG Official Airlines Guide OAM Object Access Model OAM Once-a-Month OAM Operation(s) and Maintenance OAM Operations and Management OAM Operations, Administration, and Maintenance OAM Oscillator Activity Monitor OAM&P Operations, Administration, Maintenance and Provisioning OAMC Operation, Administration, and Maintenance Centre OAMDB OA&M Database OAMP Operations, Administration and Maintenance Processor OAMP Operations, Administration, Maintenance and Provisioning OAMTD OAM Traffic Descriptor OAN Optical Access Network OAN Optical Access Node OAO Orbiting Astronomical Observatory OAP Open Automated Protocol OAR Operand Address Register OAR Outgoing Access Restrictions OARAC On Air (de-) Registration ACknowledge information element OAS Office Alarm System OAS Office Automation Systems OAS On-line Automated Support OAS Organization of American States OASE Object Aided Software Engineering OATS Open Air Test Site OATS Orthogonal Array Testing OAU Office Alarm Unit OAW Optically Assisted Winchester OB Object-Based OB Obligatory Joke OB Offboard OB Out-Band OB Outgoing Busy OB Output Buffer OB Outside Broadcast(ing) OBA Object Behavior Analysis OBA Out-of-Band Announcement OBA/D Object Behavior Analysis and Design OBAF Originating BAF OBAM Object-Action Manager OBC On-Board Controller OBC Originating Basic Call OBC Other side Bearer Channel OBCA Originating Bearer Control Agent OBCI On-Board Controller Interface OBCi Optional Backward Call Indicator OBCI Optional Backward Call Indicators OBCM Originating Basic Call Model O-BCM Originating Basic Call Model OBCS Originating Basic Call Service OBD Object Behavior Design OBEX Object Exchange obex Object Exchange OBF Offboard Framework OBF Ordering and Billing Forum OBH Office Busy Hour OBH Originating Busy Hour OBHC Originating Basic Half Call OBI Object Binary Interface OBI Odd Bit Inversion OBJ Object Code OBJ Object Code File OBJ Object Module OBJ Obligatory Joke OBN Office Balancing Network OBN Out-of-Band Noise OBO Or best offer OBP On-Board Processing OBS ACD Observe Agent OBS Call Observing OBS Observe OBS Outdoor Base Station OBTS Optical Bandwidth Test Set OBTW Oh, by the way O-BWO O-type Backward-Wave Oscillator OC Object Centre OC ObjectCenter OC Octet Counter OC Open Circuit OC Open-Captioned OC Operand Fetch Cycle OC Operations Channel OC Operations Controller OC Operator Centralization OC Optical Carrier OC Organization Code OC Originating Call OC Outgoing CAMA OC Output Compare OC Output Controller O-C Object Centre OC1 Optical Carrier-Level 1 OC-1 Optical Carrier-Level 1 OC12 Optical Carrier-Level 12 OC-12 Optical Carrier-Level 12 OC18 Optical Carrier-Level 18 OC-18 Optical Carrier-Level 18 OC192 Optical Carrier-Level 192 OC-192 Optical Carrier-Level 192 OC24 Optical Carrier-Level 24 OC-24 Optical Carrier-Level 24 OC3 Optical Carrier-Level 3 OC-3 Optical Carrier-Level 3 OC36 Optical Carrier-Level 36 OC-36 Optical Carrier-Level 36 OC48 Optical Carrier-Level 48 OC-48 Optical Carrier-Level 48 OC9 Optical Carrier-Level 9 OC-9 Optical Carrier-Level 9 OC96 Optical Carrier-Level 96 OC-96 Optical Carrier-Level 96 OCA Open Communications Architecture (IBM) OCA Optical Customer Access OCA Origin Connection Agent OCA Outgoing Call Allowance OCAA Outside Calling Area Alerting OCAD Optical Character and Detect OCB Outgoing Call Barring OCB Outgoing Calls Barred OCB-F Fixed Outgoing Call Barring (supplementary service) OCBT Office Compatible Basic Toolkit OCB-UC User Controlled Outgoing Call Barring (supplementary service) OCC Occupancy OCC Operations Control Centre OCC Optical Cross-Connect OCC Other Common Carrier OCC OUTWATS Carrier Code OCC Overflow Call Condense Block OCCA Originating Call Control Agent OCCC One Connection Call Control OCCF Operator Communication-Control Facility (SNA) OCCP Occupancy Peak OCD Out-of-Cell Delineation OCDM Optical Code Division Multiplexing OCdNo Original Called Number OCEF Optical Cable Entrance Facility OCF ObjectComponents Framework OCF (s) Facility OCF Open Computing Facility OCG Operational Co-ordination Group OCH Optical Channel OCHC Operator Call Handling Center OCI Object Code Insertion OCI Optical Carrier Interface OCI Oracle Call Interface OCI Orient Communications Industry Inc. OCI Originating Carrier Identification OCL Overall Connection Loss OCLC Online Computer Library Center OCM Object Communication Model OCM Originating Call Model OCM Outgoing Call Memory OCMS Optional Calling Measured Service OCN Operating Company Number OCn Optical Carrier-Level n OCN Original Called Number OC-N Optical Carrier-Level N OCNC Operator Centralization Night Closedown OCOC Object Centre Operations Committee OCP Optional Calling Plan OCP Original Called Party OCP-L Optional Calling Plan-Local OCP-T Optional Calling Plan-Toll OCR Optical Character Reader OCR Optical Character Recognition OCR Outgoing Call Restriction OCRIT Optical Character Reader Intelligent Terminal OCS Operations Communications System OCS Optical Cross-Connect System OCS Originating Call Screening OCS Outgoing Call Screening OCS Overlap Carrier Selection OCS Overload Control System OCT Octal OCT OCTAVE OCT Office Code Trigger OCT Overload Condition Treatment OCTAVE Object-Centered Test Automation and Verification Environment OCTPET OCTAVE Package Execution Tool OCTUTIL OCTAVE General Utilities OCU Office Channel Unit OCUDP Office Channel Unit Dataport OCU-DP Office Channel Unit-Dataport OCV Open-Circuit Voltage OCV Oscillator Control Voltage OCW Odd Control Word OCWR Optical Continuous Wave Reflectometer OCX OLE Custom Control OCX OLE Custom Extension OD Optical Disc OD Optional for operators to implement for their aim OD Origination Dialog OD Out-Band OD Output Distributor OD Outside Diameter O-D Origination-Destination ODA Object Database Adapter ODA Office Data Assembler ODA Office Document Architecture ODA On-Line Delivery Acknowledgement ODA Open Document Architecture ODB On-Demand B-Channels ODBC Open Database Connectivity ODBE Office Database Editor ODBMS Object Database Management System ODBMS Object-Oriented Database Management System ODC Office Default Carrier ODC On-Duty Coordinator ODC Optical Directional Coupler ODC Orthogonal Defect Classification ODCA Ordered Channel Assignment Scheme with Rearrangement ODCL Optical Data Communication Link ODCP One-Digit Code Point ODD Office-Dependent Data ODD Office-Dependent Database ODD Operator Distance Dialing ODE Object Database & Environment ODE Office 97 Developer Edition ODETTE Organization for Data Exchange via TeleTransmission in Europe ODF Network Management Forum ODF Object Distribution Facility (NetView) ODF OpenDoc Development Framework ODgVSt Ortsdurchgangsvermittlungsstelle (local tandem exchange) ODI Open Datalink Interface ODI Open Data-Link Interface ODI Open Device Interface ODIF Office Document Interchange Format ODIF Open Document Interchange Format ODK OEM Developer Kit ODL Object Definition Language ODL Object Description Language ODL Office Document Language ODL Optical Data Link ODLI Open Data Link Interface ODLS Optical Disk Library System ODM Object Data Manager ODM Object Data Model ODM Object Display Map ODM OCTAVE Data Manager ODM Office Data Modification ODM Optimized Distribution Model ODM Organization Domain Modeling ODMA Open Distributed Management Architecture ODMA Opportunity-Driven Multiple Access ODMG Object Database Management Group ODMG-93 Object Database Management Group-93 ODMI OCTAVE Data Manager Interface ODN Open Data Network ODN Optical Distribution Network ODNA Originating DNA ODP Object Delivery Program ODP Office Dialing Plan ODP Open Distributed Processing ODP Optical Distribution Point ODP Optical Diverse Protection ODPE ODP Environment ODP-RM Open Distributed Processing Reference Model ODR Optimized Dynamic Routing ODR Origin-Dependent Routing ODS Open Data Services ODS Open Distributed Systems ODS Optical Data Storage ODS Ozone Depleting Substances ODSA Open Distributed Systems Architecture ODSI Open Directory Services Interface ODT Operator Display Terminal ODT Optical Distribution Terminal ODT Outage Down Time ODU Optical Demultiplexer Unit OE ISDN Access Line View OE Object Engine OE Office Equipment OE Office Equipment Identification OE Office Equipment Number OE Operating Equipment OE Operations Event OE Originating Equipment OE Originating Exchange OE Output Enable OE Overrun Error OEA Operating Environment Architecture OEA Optimized Effective-Address OECD Organisation for Economic Cooperation and Development OED Oxford English Dictionary OED2 Oxford English Dictionary, Second Edition OEDN Office Equipment/Directory Number OEF Origin Element Field OEIC Optoelectronic Integrated Circuit OEIC Opto-Electronic Integrated Circuit OEM Operating Efficiency Measurement OEM Operations Event Monitoring OEM Original Equipment Manufacturer OEM Other Equipment Manufacturers OEM Outside Equipment Manufacturer OEMF HP OpenView Element Management Framework OEP Operand Execution Pipeline OERC Optimum Earth Re-entry Corridor OES Österreichisches EinheitswählSystem OES Outgoing Echo Suppressor OES-D (Austrian variant of DMS-100) OET Office of Engineering and Technology OEW Object Engineering Workbench OF Object Framework OF Optional Fixed Length OF Overflow OF Overflow Flag OFA Off-Net Access OFA Amplifier OFA Output Function Array OFB Output Feedback OFC Office OFC Official OFC Open Financial Connectivity OFC Optical Fiber Conference OFCi Optional Forward Call Indicator OFDM Optical Frequency Division Multiplexing OFDM Orthogonal Frequency Division Multiplexing OFDM Orthogonal Frequency Domain Multiplexing O-FDM Optical Frequency Division Multiplexing OFDMA Orthogonal Frequency-Division Multiple Access OFE Old Front End OFF Object File Format OFFL Offline OffL Offline OFFLN Offline OFGQ Outgoing Facility Group Queuing OFHC Oxygen-Free, High-conductivity Copper (Cables) OFHK Off-Hook OFL Overflow OFM Operations Feature Matrix OFM Outage Frequency Measurement OFM Outgoing Formatter OFMC Optical Fibre Measurement Conference OFR Off Frequency Rejection OFR Overflow Register, Signal Distribution Point OFS Object File System OFS Office-side Frame Synchronization OFS Open File Server OFS Operational Fixed Service OFS Optical Fiber System OFS Out-of-Frame Second OFS Output Field Separator OFS Overflow Register, Software OFTEL Office for Telecommunications (UK) OG Outgoing OG Outside BBG OGC Outgoing Trunk Circuit OGDD Outgoing/Delay Dial OGID Outgoing/Immediate Dial OGR Outgoing Repeater OGT Outgoing Toll OGT Outgoing Trunk OGW Operations Gateway OGWS Outgoing/Wink Start OGXPT Outgoing Crosspoint OH Off Hook OH Operator Handled OH Overhead OH U.S. postal code for Ohio OHBT Off Hook Balance Test OHC Originating Half-Call OHD Offhook Delay OHD Off-Hook Delay Trigger OHD Optical Heterodyne Detection OHD Over-Heat Detector OHDACC Operator Handled Directory Assistance Call Completion OHECD Outgoing Half Echo Control Device OHI Off-Hook Immediate Trigger OHI Off-Hook Subscriber Service Indicator OHIP Office Hardware Inventory Package OHP Over-Head Projector OHQ Off-Hook Queuing OHQT Off Hook Queue Tone OHS Off-Hook Service OHSP Operator-Handled Split-Referral OHT On Hook Transmission OI Number of Outstanding I Frames OI Object Identifier OI Object Interface OI Open Interface OI Operator Identification OIA Office Information Architecture OIA Open Information Access OIA Open Interface Access OIC Oh, I see OIC Originating InterLATA Carrier OICS Object Implementation Conformance Statement OID Object Identifier OID Object Interaction Diagram OID Object-ID OIDL Object Interface Definition Language OIFDC Outstanding Information Frames for LAPD, Parameter K for Call Cont rol OIFDP Outstanding Information Frames for LAPD, Parameter K for X.25 Pack et OIGP Open Interior Gateway Protocol OII Office Information Interchange (SNA) OIL Optimizable Intermediate Language OIL Optimizing Intermediate Language OIL Orange Indicating Lamp OIM Open Information Management OIM Operations Interface Module OIM Operator Interface Message OIM Oracle In Motion OIM OSI Internet Management OINC Originating International Carrier OINF Originating Rate Center Information OIRT Organisation internationale de radiodiffusion et de télévision (International Radio and Television Organisation) OIS Office Information System OIS Optical Interface System OIS Originating International Switch OIU Office Interface Unit OIU Operator Interface Unit OIW Open Systems Environment Implementors Workshop OIW OSI Implementers Workshop OIW OSI Implementor's Workshop OJ Ordinary Joint meeting (ETSI) OJ Originating Junctor OJT On-the-Job Training OJUG Ottawa Java Users Group OK U.S. postal code for Oklahoma OKITAI Okinawa-Taiwan submarine cable OKQPSK Offset Keyed Quadrature Phase Shift Keying OKTR Operator Keyed Trouble Report OL Open License OL Ordered List (HTML tag) OL Other Line OL Overhead Line OLA Operational Level Agreement OLAP On-Line Analytical Processing OLB Object Library file OLB OCU Loop Back OLB One Line Business OLB On-Line Bibliography OLC Optical Loop Carrier OLCP On-Line Complex Processing OLCR On-Line Character Recognition OldRT Old Remembered Table OLE Object Linking and Embedding OLE Originated Local Exchange OLE2 Object Linking and Embedding 2 OLEC Other Local Exchange Carrier OLFR On-Line Facility Registration OLHB Outgoing Line History Block OLI Originating Line Information OLIP Originating Line Information Parameter OLIT OPEN LOOK Intrinsics Toolkit OLIU Optical Line Interface Unit OLL Open-Loop Loss OLM Overload Message OLNS Originating Line Number Screening OLO Other Licensed Operator OLP On Line Processor OLP Originating Line Privileges OLR Off-Line Recovery OLR Overall Loudness Rating OLRT On-Line Real-Time OLS On-Line Service OLS Operator Load Simulator OLS Optical Line System OLS Originating Line Select OLS Originating Line Selection OLSOA Over-Load Safe Operating Area (Power Semiconductors) OLT Optical Line Terminal OLT Optical Line Termination OLT Optical Line Terminator OLTE Optical Line Terminating Equipment OLTM Optical Line Terminating Multiplexer OLTM Optical Line Termination Module OLTP On-Line Transaction Processing, OLTS Optical Line Transmission System olwm Open Look Window Manager OM DDOC Section: Operational Measurements OM ISO country code for Sultanate of Oman OM Object Manager OM Object Model OM Old Man (radio amateur) OM Operational Measurement OM Operations Management OM Originating Marker OM Output Message OM Output Message Manual OM-1 Open MPEG-1 OM2 Operational Measurements Integrity Check OMA Open Management Architecture (3Com) OMA Organizational Mission Analysis OMAP Operations, Maintenance and Administration Part OMAP Operations, Maintenance, and Administration Protocol (SS7) OMASE Operations and Maintenance Application Service Element OMAT Operational Measurement Analysis Tool OMB Outgoing Message Buffer OMBE Outgoing Message Buffer Empty OMC OM Collector OMC Operating and Maintenance Centre OMC Operations and Maintenance Center OMD Object Model Development OME Open Messaging Environment OMF Object Management Framework OMF Object Management Function OMF Object Manager Framework OMF Object Model Format file OMF Object Module Format OMF Open Message Format OMFS Office Master Frequency Supply OMG Object Management Group OMI Open Microprocessor Initiative OMI Optical Modulation Index OMI Organisation Maritime Internationale OMID Operational Measurement ID OML Object Manipulation Language OML Object Model Library OML OPEN Modeling Language OML Operations and Maintenance Link OML Outgoing Matching Loss OML Overload Messaging Limit OMMO Object Manager Managed Object OMNCS Office of the Manager, National Communications System OMNI Open Management Network Interoperability OMNIPoint Open Management Network Interoperability Point OMO OEM Modules Operation OMP Open Management Platform OMP Operations and Management Platform OMP Outbound Modem Pooling OMPI Organisation Mondiale pour la Propriété Intellectuelle OMPR Operational Measurements Print OMQ Outgoing Message Queue OMR Optical Mark and Read OMR Optical Mark Reader OMRS Operational Measurement Reporting System OMS Object Management System OMS Open Management System OMS Optical Multiplex Section OMS Outgoing Memory Slot OMSP Optical Multiplex Section Protection OMS-V Open Management System-Vector OMT Object Modeling Technique OMT Operation and Maintenance Terminal OMT Original Message Type OMT OrthoMode Transducer OMT Overhead Message Train OMTool Object Modeling Tool OMU Operand Modifier Unit OMU Operation and Maintenance Unit (Nokia) OMU Optical Multiplexer Unit OMUP Operation and Maintenance User Part ON Order Number ON Originating Number ON Ortsnetz (Local Network) ON Österreichisches Normungsinstitut (A) ON Postal code for Ontario ONA Open Network Architecture (ISO) ONA Open NM Arch (IBM, FCC, BOC, BT) ONAC Operations Network Administration Center ONAL Off-Network Access Line ONAT Originating No Answer Timer ONC Off-Net Calling ONC ONMS Node Commander ONC Open Network Computing ONC Operator Network Center ONC Operator Network Console ONC Ordinary National Certificate ONC+ Open Network Computing Plus ONC-A Operator Network Center-A OnCE On-Chip Emulation ONE One Number ONE Open Network Environment ONE Open Networks Engineering ONE Optical Network ONE Optimized Network Evolution ONE Other Network Entity ONI ODS Nucleus Interface ONI Open Network Interconnect ONI Operator Number Identification ONI Optical Network Interface ONID Operator Number Identification ONKZ National Destination Code ONKz Ortsnetzkennzahl (Local Exchange/Area Dialing code) ONLN Online ONMA Open Network Management Architecture ONMS Optimized Network Management System ONP Address complete, subscriber Free, Charge ONP One Night Process ONP On-Premise Extension ONP Open Network Provision(ing) ONP Open Numbering Plan ONPS Origin of Number and Presentation Status ONS Open Network Service ONSD Optional Network Specific Digit ONT Optical Network Termination ONTC Optical Networks Technology Consortium ONU Optical Network(ing) Unit ONU Organisation des Nations Unies OO Object-Oriented OO Operator Office O-O Object-Oriented OOA Object-Oriented Analysis OOAD Object-Oriented Analysis and Design OOB Out-of-Band OOBE Out-of-Box Experience OOBF Out-of-Box Failure OOC Optical Orthogonal Codes OOC Overseas Operator Center OOD Object-Oriented Design OODB Object-Oriented Database OODBMS Object-Oriented Database Management System OODLE Object-Oriented Design Language OOE Organizations Outside ETSI OOF Object-Oriented Framework OOF Out of Frame OOK On Off Keying (ASK) OOK On/Off Keying OOK On-Off Keyed OOL Object-Oriented Language OOLR Overall Objective Loudness Rating OOO Out Of Order OOP Object-Oriented Programming OOPL Object-Oriented Programming Language OOPM Object Oriented Process Metric(s) OOPS Object-Oriented Programming System OOPSLA Object-Oriented Programming Systems, Languages, and Applications OOR Object-Oriented Representation OOR Object-Oriented Requirements OOR Operator Override OOR Operator Override message OORP Object-Oriented Rapid Prototyping OORTL Object-Oriented Run-Time Library OOS Object-Oriented Systems OOS Out Of Service OOS Out of Synch OOSA Object-Oriented Systems Analysis OOSD Object-Oriented Software Development OOSE Object-Oriented Software Engineering OOSP Out-of-Service Permanent OOST Out-of-Service Temporary OOST Out-of-Service Time OOT Object-Oriented Technique OOT Object-Oriented Technology OOTC O-O Technology Center (IBM) OOUI Object-Oriented User Interface OOZ Out Of Zone OP Off-Premises OP Operate OP Operator OP Originating Party OP Originating Protocol OP Outside Plant OPA Operator System Access OPA Origin Protocol Agent OPAC Online Public Access Catalog OPAC Outside Plant Access Cabinet OPAL Optical Access Line OPAL Optische Anschlussleitungen (DBPT-defined FITL system) OPC Operations Controller OPC Operations Position Controller OPC Organic Photoconductor OPC Originating Point Code OPC Origination Point Code OPC Outgoing Peg Count OPC Output Port Controller OPCN Operation Condition message OPD Oberpostdirektion (DBPT regional operations area) OPDU Operation Protocol Data Unit OPE Outside Plant Module Equipment OPEN Object-oriented Process, Environment and Notation OpEN Open Protocol Embedded Networking OPEN Open Protocol Enhanced Networks OPI Open Prepress Interface OPID OPerator Identity OPL DTMF Outpulsing to a Line OPL Originating Packet Limit OPLL Optical Phase-Locked Loop OPM Operations Per Minute OPM Optical Power Meter OPM Optical Protection Module OPM Outside Plant Module OPN Open OPND Outpulse Number Digits OPOTS OCTAVE POTS OPP Office of Plans and Policy OPP Open Position Protocol OPP Operator Position Protocol OPR Office Performance Report OPR Operate OPR Operator(s) OPR Optical Pattern Recognition OPRF Override Presentation Restrictions on Forwarding DN OPRN Originating Private Number OPS Off-Premise Station OPS Open Profiling Standard OPS Operations Per Second OPS Operations System OPS Operator Services OPS Operator System OPS Outgoing Packet Size OPS/INE Operations System for Intelligent Network Elements OPS/INE Operations System/Intelligent Network Element OPSC Optical Protection Switching Controller OPSE Operation Protocol Service Element OPSIC Operators Identification Code OPSK Offset Phase Shift Keying OPSM Outside Plant Subscriber Module OPT Optional OPTS OCTAVE PTS OPUS Object-Oriented PROTEL-2 User System OPX Off-Premises Extension OQAM Offset Quadrature Amplitude Modulation OQL Object Query Language OQPSK Offset Quadrature Phase-Shift Keying O-QPSK Offset Quadrature Phase Shift Keying OQSM OCTAVE Query Set Manager OR Office Regenerator OR Office Repeater OR Operator Released OR Option Register OR ORdinary Meeting (ETSI) OR Originator/Recipient OR U.S. postal code for Oregon OR0 Option Register 0 OR1 Option Register 1 OR2 Option Register 2 OR3 Option Register 3 ORA Opportunities for Rural Areas (EC R&D programme) ORA O'Reilly & Associates ORA Override Restrictions Allowed ORB Object Request Broker ORB Office Repeater Bay ORB Omnidirectional Radio Beacon ORC Object Responsibility Collaboration ORC Originating Rate Center ORCC Originating Rate Center Code ORD Override Restrictions Denied ORDB Operator Reference Database OREP Optical Repeater Equipment org Miscellaneous organizations domain ORG Origination Utility ORI Operation or Result Identification ORICO ORadio Interface CardO ORIG Origination ORIGDN Originating DN ORJ Operator Requested Job ORJGEN Operator Requested Job Generator ORL Olivetti Research Laboratory ORL Optical Return Loss ORM Optical Remote Switching Module ORM Optically Remoted Module ORMA Optical Reservation Multiple Access OROM Optical Read-Only Memory ORPC Object RPC ORR Office Release Record ORR Original Redirection Reason ORS Operations Readiness Solutions ORS Output Record Separator ORT Optical Receiver Transmitter ORU Office Repeater Unit OS Operating System OS Operation(s) System OS Operator Service(s) OS Operator System OS Optical Sender OS Originating Service OS Originating Subaddress OS Origination Service OS Out of Service OS Output Signal OS/2 Operating System/2 OS/NE Operations System to Network Element OS/NMS Operation System/Network Management System OSA Office System Architecture OSA Open Scripting Architecture OSA Open Systems Architecture (Olivetti) OSA Operator System Access OSA Optical Society of America OSA Optical Spectrum Analyzer OSA-A Operator System Access- Alternate Access OSAC Operator Speed of Consistency OSAC OSSAIN Centralization OSAF Origin Subarea Field OSAL OAM Services Access Layer OSA-P Operator System Access- Principle Access OSB Office Shortcut Bar OSB Optical Switch Board OSB Output Signal Balance OSBCM Operator Services Basic Call Model OSC Object Server Connectivity OSC Ohio Supercomputer Center OSC Operating System Command OSC Operator Service Call OSC Operator Service(s) Center OSC Operator Services Client OSC Operator Services Complex OSC Oscillator OSCA Open Systems Cabling Architecture OSCA Operations System Computing Architecture OSCAR Orbit Satellite Carrying Amateur Radio OSCAR Orbiting Satellite Carrying Amateur Radio OSCAS Operator Services/Separations Call Analysis System OSCI Open Service Control Interface OSD On-Screen Display OSD Open Software Distribution OSD Optical Scanning Device OSD OSI Session Driver OSDE On-Site Data Evolution OSDL Object-Oriented SDL OSDS Operating System for Distributed Switching OSDT Operations Systems Demonstration Tools OSF Offset Field OSF Open Software Foundation (USA) OSF Open Systems Foundation OSF Operation System Functions OSF Operations System Function OSF Operations Systems Functions OSF OS' Functional Block OSFP Offset Field Parity OSHA Occupational Safety and Health Act (USA) OSHA Occupational Safety and Health Administration (USA) OSI Open Switching Interval OSI Open Systems Interconnection OSI/NMF Open Systems Interconnection/Network Management Forum OSIA Operation System Impact Analysis OSIA OSI Architecture OSI-ALS OSI Application Layer Structure OSIE Open Systems Interconnection Environment OSIMIS OSI Management Information Service OSIMIS OSI Management Information System OSINCP OSI Network Layer Control Protocol OSINLCP OSI Network Layer Control Protocol OSIRM Open Systems Interconnection Reference Model OSI-RM Open Systems Interconnection Reference Model OSITOP Open Systems Interconnection Technical and Office Protocol OSITOP OSI Technology and Office Protocols OSI-TP Open Systems Interconnection-Transaction Protocol OSL ObjectSupport Library OSL Operating System Independent Layer OSLP Operations Service Logic Program OSM Office of Spectrum Management OSM Off-Screen Model OSM On Screen Manager OSM On Site Message OSM Organization Structure Manager OSM Originating State Machine OSM OS-Specific Module OSMINE Operations System Modifications for the Integration of Network Ele ments OSN Observational Standard Number OSN Office System Node (DIA/SNADS) OSN Operating System Nucleus OSN Operations System Network OSN OSSAIN Node OSNA Open Service Network Architecture OSNL Operating System Nucleus Language OSNM Operator Services Node-Maintenance OSNR Optical Signal-to-Noise Ratio OSNS Open Systems Network Support (SNA) OSO Originating Screening Office OS-OPAL Operations System for OPAL Fiber Optic Networks OSP OSP Open Services Platform OSP Open Signal Processor OSP Operator Service Provider OSP Optical Storage Processor OSP Originating Service Provider OSP Other Service Provider OSP Outside Plant OSPF Open Shortest Path First (IETF/TCP/IP) OSPFv1 OSPF Version 1 OSPFv2 OSPF Version 2 OSPS Operator Services Position System OSQL Object-oriented Structured Query Language OSR Operator Services Record OSR1 OEM Service Release 1 OSR2 OEM Service Release 2 OSS Operation Subsystem OSS Operational Support System OSS Operations Support System OSS Operator Service(s) Signaling OSS Operator Services Switch OSS Operator Services System OSS7 Operator Services Signaling Using Signaling System No. 7 OSSAIN Operator Services System Advanced Intelligent Network OSS-C Operator Services Steering Committee OSSDI OSS Data Interface OSSGR Operator Services Systems Generic Requirements OSSI Operations Support Systems Interface OSS-IA Operational Support System Integration Architecture OSSU Operator Services Switching Unit OST Office of Science and Technology OST Operating System Trap OST Originating Station OST Originating Station Treatment OSTC Open Systems Testing Consortium OSTR Operator Services Trouble Report OSTT Open Systems Technology Transfer OSTTP OS Technology Transfer Program (UK) OSU The Ohio State University OSVR Operator Service Voice Response OSWS Operating System Workstation OT Object Table OT Object Technology OT ObjecTime OT Operation Type OT Operator Terminal OT Optical Translator(s) OT Originating Time OT Overtime OTA Office of Technology Assessment OTA Operational Transconductance Amplifier OTA Operation-Triggered Architecture OTA Over-the-Air Activation OTAR Over the Air Registration OTAU Optical Test Access Unit OTC Old Table Control OTC One Time Charge OTC Operating Telephone Company OTC Originating Toll Center OTC Outgoing Throughput Class OTC Overseas Telecommunication Commission OTC Terminating Carrier Identification OTD Observations of Time Differences OTD Observed Time Differences OTDM Optical Time Division Multiplexing OTDR Optical Time-Domain Reflectometer OTE Hellenic Telecommunication Organization OTER Operator Team Efficiency Ratio OTF Object Testing Framework OTF On-The-Fly OTF Open Token Foundation OTF Optical Transfer Function OTG Originating Trunk Group OTGR Operations Technology Generic Requirements OTH Other Trunk OTH Over The Horizon OTH-B Over-The-Horizon Backscatter (Military Radar) OTI Object Technology International Inc. OTI Outgoing Trunk Identifier OTL OSI Testing Liaison group OTM Object Transaction Manager OTM Optical Terminal Multiplexer OTOH On the other hand OTOR Omni Transmit, Omni Receive OTP Office of Telecommunications Policy OTP One Time Pad OTP One Time Password OTP One-Time-Programmable (IC-Device, Memories) OTP Open Telecom Platform OTP Open Trading Protocol OTQ Outgoing Trunk Queuing OTR Operational Trouble Report OTR Operator Trouble Report OTR Optical Transmitter and Receiver OTS Object Transaction Service OTS Office Traffic Summary OTS Operator Telephone System OTS Optical Transmission Section OTS Orbital Test Satellite OTSR Omni Transmit, Sectored Receive OTSS Off-The-Shelf System OTSS OS Transport and Session Support (SNA) OTTO On-line Transmission Time Optimizer (SNA) OTUG Object Technology Users Group OTW Occasional Trainer Workshop OU Organization Unit OUB Occasionally Used Bands OUI Organizationally Unique Identifier OUP Originating User Prompter OUPI Originating User Participant Information OURS Open User Recommended Solutions OUSP Originating User Service Participant OUT Object Under Test OUT Remove service OUTDN Delete block of DNs, RCF OUTIN OUTput and INput workstation OUTPUT OUTPUT only workstation OUTS Originating Utility Telemetry Service OUTWATS Outward Wide Area Telecommunications Service OUTWATS Outward Wide Area Telephone Service OV Optional Variable Length OV Overvoltage OVCC Open Via Chip Carrier (VLSI Package) ÖVE Österreichischer Verband für Elektrotechnik (A) OVEC Originating Vector Coordinates OVED COSOVE Code Digits OVF Overflow OVFL Overflow OVFLINQ Incoming Overflow Queue OVFPT Overflow Point OVFREG Overflow Register OVFTRT Overflow Treatment OVFTRTPM Overflow Treatment, Packet-Mode OVID Object View Interaction Design OVIDE Organization of Videotex for Information of Deputies in Europe OVL Overlay Files OVLD Overload OVLD Overload message OVLP Overlap Outpulsing OVLY Overlay OVP Over Voltage Protection OVS Open Video Systems OVS Overseas OVSt Ortsvermittlungsstelle (local exchange/local switch) ÖVSV Österreichischer VersuchsSender Verband (A) OW ObjectWorks OW Open Wire OW Order Wire OWATSBLN OUTWATS Billing Number OWATSCB OUTWATS Call-by-Calling Billing Records OWATSSCR OUTWATS Screening Sets OWC One-Way Communication OWF Optimum Working Frequency OWFBD OUTWATS Full Business Day OWG Optical Wave Guide OWL ObjectWindows Library OWMT OUTWATS Measured Time OWS Operator Work Station OWS Outgoing Window Size OWST ObjectWorks/Smalltalk OWT Operator Work Time OWT OUTWATS OX Originating Switch Complex OXC Optical Crossconnect OXCN Optical Cross-Connect OXCO Oven-Controlled Crystal Oscillator oz ounce(s) weight, approx. 28.3 g back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O - P - Q|R|S|T|U|V|W|X|Y|Z

P Paragraph (HTML tag) P Parallel P Parity P Pending P Peripheral side p pico (10-12) P Planning P Point P Poll P Poll bit P Positive P Power (in dB) p power (in watts) P Predicted (frame) P Predictive P Preload Register P Presentation P Presentation Layer P Presentation Layer Service P Primitive P Priority P proberen (Dutch for "to test") P Processor P Profile in data syntax II P Prohibited p Proportional P Protocol P Puncher P Wait P&A Privacy and Authentication P&E Planning and Engineering P&L Peripheral and Loading P&L Profit and Loss P&S Publish and Subscribe P(R) Packet Receive Sequence Number P(R) Packet Receive sequence number P(S) Packet Send Sequence Number P(S) Packet Send sequence number p.e.p. peak envelope power P/A Programmer/Analyst P/AR Peak-to-Average Ratio P/C Primitive/Constructed P/F Poll/Final P/F Poll/Final bit (0 = Unacknowledged Operation; 1 = Acknowledged Ope ration) P/PC Palm-Size PC P/S Parallel-to-Serial P1 Number of User-Assigned Packet Control TEI Values P1 to P5 Compatible Photographic Profiles, numbered 1 to 5 P1FCC Phase 1 First Call Configuration P2 Number of Switch-Assigned Packet Control TEI Values P2 PROTEL-2 P2MET-D Protel-2 Metrics Generation Tool for Designers P2P Point-to-Point P2SC IBM Power 2 Super Chip P3P Platform for Privacy Preferences Project PA ISO country code for Republic of Panama PA Paging Area PA Paper Pa Pascal(s) PA Path Administrator PA Peripheral Adapter PA Peripheral Applications PA Personal Agent PA Physical Agreement PA Portable Application PA Power Amplifier PA Preamble PA Pre-Arbitrated PA Precision Architecture PA Primary Access PA Process Alive PA Program Address PA Protocol Abnormality PA Protocol Agent PA Protocol Analyzer PA Public Address PA Public Address system PA Pulse Amplifier PA U.S. postal code for Pennsylvania PAA Paging Area controller Address PAA Policy Approving Authority PAA Protocol Analysis Application PAB Personal Address Book file PAB Phase Aligned Passive Bus PAB Protel Advisory Board PABX Private Automatic Branch Exchange PAC ETSI Programme Advisory Committee PAC Paging Area Controller PAC Parallel Access Circuit PAC Perceptual Audio Coder PAC Perceptual Audio Coding PAC Personal Acoustic Control PAC Platform Adaptor Component PAC Point-and-Click PAC Privilege Attribute Certificate PAC Program Address Counter PAC Programme Advisory Committee (ETSI) PAC Prompted Automatic Callback PAC Protection Against Collision PACA Priority Access and Channel Assignment PACCH Packet-Associated Control Channel PACDAC Packet DAC PACE Performance (Inc.) Advanced CMOS Engineering (High-Speed IC) PACE Priority Access Control Enabled PACE Product Assurance Component Engineering PACES Product and Component Enterprise System PACET Programmable Attendant/Agent Console and Electronic Telephone PACK Package PACK Positive Acknowledgement PACKET Layer two entity comprising ACW and any following DCWs transmitted as a single unit over which the s PAC-OS Paging Area Controller- Operating System PACS Patch Administration Control System PACS Personal Access Communications Services PACS Personal Access Communications System PACS Picture Archiving and Communication System PACS Picture Archiving and Communication System (Siemens) PACS-L Public Access Computer Systems List PACS-UA PACS-Unlicensed A PACS-UB PACS-Unlicensed B PAC-T the part of the Paging Area Controller dealing with the Traffic co ntrol process PAD Packet Assembler/Disasssembler PAD Packet Assembly/Disassembly PAD Packet Assembly/Disassembly facility (CCITT Rec. X.3, X.28, X.29) PAD Padding PaDIUC ParcPlace and Digitalk International Users Conference PADN Patch Administration and Downloading PAE Parameter Arrival Element PAF Problem Already Fixed PAF Project Application Form PAG Program Administration Group PAG Project Advisory Group PAGCH Packet Access Grant Channel PAGCH Paging and Access Grant Channel PAGE PABX Access for GSM Extensions PAGE PM Automation Generic Environment PAI Protocol Addressing Information PAIH Public-Access Internet Host PAIS Public-Access Internet Site Packet Links PAL Paradox Application Language PAL Participant's ACT Lost PAL Phase Alternate Line (analogue TV system) PAL Phase Alternating Line PAL Phase Alternation by Line PAL Phase Alternation Line PAL Phase-Alternation Line PAL Product Application Letter PAL Programmable Array Logic (Monolithic Memories Inc.) PAL Public Access Line PALA Precedence Access Limitation Announcement PALC Plasma-Addressed Liquid Crystal PALplus widescreen variant of PAL system PAM Partition to Antenna Mapping PAM Pass Along Message PAM Personal Application Manager PAM Pluggable Authentication Module PAM Power and Alarm Module PAM Pulse Amplitude Modulation PAMA PreAssigned Multiple Access PAMA Pulse Address Multiple Access PAMR Public Access Mobile Radio PAMS Preselected Alternate Master-Slave PAN PAN Public Addressed Node PANS Peculiar and Novel Services PANS Potentially Attractive New Services PANS Pretty Amazing New Services PANS Pretty Amazing New Stuff PANS Pretty Awesome New Services PAP Password Authentication Protocol PAQ Parameter Arrival Queue PAQ Personal Agent Queue PAQS Provisioning Automated Quotation System PAR PARameter PAR Parity PAR Peak-to-Average Ratio PAR Periodic And Random deviation PAR PNNI Augmented Routing PAR Positive Acknowledgement and Retransmission PAR Precission Approach Radar PAR Programme Aid Routine PAR Programme d'Action de Recherche PAR Project Authorization Request PAR ProSTAR Analysis Report PARADISE Piloting A ReseArchers DIrectory Service in Europe PARB Process Architecture Review Board PARC Palo Alto Research Center (Xerox) PARC Paragraph Control Element PARG Play, Acquire. Recognize, Get DTMF PARI Primary Access Rights Identity PARI Primary ARI PA-RISC Precision Architecture-Reduced Instruction Set Computing PARK Portable Access Rights Key PARK{y} PARK with value y for it's park length indicator PARM Parameter PARM Parameter Downloading PARMCAII Process Alive + Role Mapping + Content Alignment + Interactive Fra mework PARS Personal Advanced Radio System PARS Personal Audio Response System PARS Personalized Audio Response System PartMan Partition Manager PARTS Parts Assembly and Reuse Tool Set PAS Personal Access Service PAS Personal Access Services PAS Product Administration System PAS Protected Application Segment PAS Public Access Service PAS Publicly Available Specification PASC PCS Access Service for Radio Controllers PASC PCS Access Services for Controllers PASM Protocol Adaptable State Machine PASP PCS Access Services for Ports PASP PCS Access Services for Radio Ports PAT Post Announcement Treatment PAT Productization Architecture Team PAT Program Association Table PATC Page Address Translation Cache PATED Prefix Analysis and Task Element Determination PATH Program on Advanced Technology for the Highway PATROL Program for Administrative Traffic Reports On-Line PATS Parameterized Abstract Test Suite PATU Pan African Telecommunications Union PAU Pause message PAWL Public Access Workstation Laboratory PAWS Protection Against Wrapped Sequence Numbers PAWS Provisioning Analyst Workstation System PAX Private Automatic Exchange PB Packet Bus PB Paddle Board PB Parameter Block PB Parity Block check PB Personal Base Station PB Pipeline Burst PB Play Back PB Power Box PB PowerBuilder PB Proportional Bidding PB Provisioned B-Channel PB Public Number PB Pushbutton PBA Physical Block Address PBA Printed Board Assembly PBA Provider Based Address PBAC Peripheral Bus Access Controller PBC Peripheral Board Controller PBC Peripheral Bus Computer PBC Physical Bearer Channel PBC Physical Bearer Connection PBC Postal Business Center PBC Program Booking Center PBC Programming By Contract PBCCH Packet Broadcast Control Channel PBDK PowerBASIC Developer Kit PBE P-Bus Extender PBE Preferred Binary Encoding PBF Proportionate Bidding Facility PBGA Plastic Ball Grid Array PBI Phone Based Interface PBI Profiler Batch Input file PBITS Pac Bell Integrated Test System PBK Phone Book file PBL Private Business Line PBM PBX Message Rate PBM PBX Message Register PBM Physical Bus Maintenance PBM Portable Bitmap PBN Packet Based Network PBO Profile-Based Optimisation PBO Profiler Batch Output file PBPVACC Public-to-Private Access Code PBS Personizable Basic Service PBS Portable Base Station PBS Public Broadcasting System PBsy P-Side Busy P-BSY Peripheral Side Busy PBT Pass-Band Tuning (Radio Communications) Pbus Processor Bus P-BUS Processor Bus PBW Power Band-Width PBX PBX Flat Rate PBX Private Branch Exchange PBX Private Business Exchange PBX(PABX) Private Automatic Branch Exchange PC Paddle Card PC Paper Cassette PC Parameter Combination PC Path Control PC Peg Count PC Peripheral Control PC Peripheral Controller PC Personal Computer PC Personality Card PC Physical Connection PC Point Code PC Point Coordinator PC Power Control PC Power Converter PC Precision Control PC Preset Conference PC Primary Center PC Printed Circuit PC Priority Call (TETRA) PC Priority Control PC Private Circuit PC Process Control PC Program Commit PC Program Complete PC Program Counter PC Programming Committee PC Protection Channel PC Protocol Capabilities PC Protocol Control PC/AT Personal Computer/Advanced Technology PC/S Personal Computer/Standard PC/T Personal Computer/Tape PC/XT Personal Computer/eXtended Technology PCA Personal Communicating Assistant PCA Policy Certification Authority PCA Policy Creation Authority PCA Port Channel Address PCA Power Control and Alarm PCA Printed Circuit Assembly PCA Privacy Change Allowed PCA Process Component Architect PCA Product Content Administration PCA Product Content Application PCA Protective Connecting Arrangement PCA Protocol Conformance Analyzer PCA Protocol Conformance Application PCAA Portable Computer and Communications Association PCAC Point Code Allowed Control PCAM Packaged Core Auxiliary Module PCB Party Control Block PCB Person Call Back PCB Printed Circuit Board PCB Process Control Block PCB Protocol Control Block PCB Public Coin Box PCBA PCB Assembly PCBC Plaintext Cipher Block Chaining PCBM Packaged Core Basic Module PCC Parallel Connection Control PCC Permanent Consultative Committee PCC Personal Companion Computer PCC Philips Consumer Communications PCC Plastic Chip Carrier PCC Power Control Channel PCC Primary Circuit Components (Power Line) PCC Process Control Computer PCC Pseudo Country Code PCC Punctured Convolutional Code PCCA Portable Computer Communications Association PCCAB Prefetcher with Circular Content Addressable Buffer PCCB Product Configuration Control Board PCCH Physical Control Channel PC-COE PC-Common Operating Environment PCCU Personal Computer Communication Unit PCD Page-Level Cache Disable PCD Personal Communication Device PCD PhotoCD PCD PhotoCD File PCD Picture Coding Delimiter PCD Program-Counter Calculation and Decoding PCDDS Private Circuit Digital Data Service PC-DOS Personal Computer Disk-Operated System (IBM Inc.) PCE P Bus Checker Enable PCE Picture Control Entity PCE Position Controller Equipment PCF Plastic Clad Fiber PCF Point Coordination Function PCF Portable Compiled Format PCFSK Phase Continuous Frequency-Shift Keying PCH Paging Channel PCH Patch Subsystem PCH Precompiled Header file PCH PunCHer PCHK Parity Check PCI Panel Call Indicator PCI Peripheral Component(s) Interconnect(ion) PCI Personal Communications Interface PCI Personal Communications Internetworking PCI Personal Computer Interface PCI Presentation Context Identifier PCI Programmable Communications Interfaces PCI Programming Communication Interface PCI Programming Communications Interface PCI Protocol Control Indicator PCI Protocol Control Information PCIA Personal Communications Industry Association PCIB Personal Computer Interface Bus PCID Product Content Identifier PCIM Packaged Core Interface Module PCIU Power Cabling Interface Unit PCL Portable Channel List PCL Printed Circuit Layout PCL Printer Control Language PCL Product CM Lineup PCL Product Computing Module Load PCL5 Printer Control Language 5 PCLID Port Client ID PCLM Packaged Core Line Module PCM PC Magazine (periodical) PCM Persistent Class Manager PCM Personal Call Manager PCM Plug-Compatible Manufacturer PCM Pulse Code Modulation PCM Punched Card Machine PCM30 CEPT 30-channel PCM carrier system PCMCIA Personal Computer Memory Card International Association PCME Packet Circuit Multiplication Equipment PCMF Persistent Class Manager Framework PCMI Photo-Chromic Micro Image PCMM Packaged Core Memory Module PCMS Power Control and Monitoring System PCMS Product Configuration Management System PCN Personal Cellular Network PCN Personal Communications Network PCN Personal Communications Service PCN PointCast Network PCN Preliminary Completion Notice PCN Presentation of Calling Name PCN Product Change Notice PCN Public Carrier Networks PCNE Protocol Converter for Native X.25 Equipment PCNE Protocol Converter for Non-SNA Equipment (SNA) PCNM Packaged Core Network Module PCNP PC Network Program (IBM)-SNA) PCNT Public Carrier Networks Technology PCO Percent Overflow PCO Point of Control and Observation PCompI Parameter Compatibility Information PCOS Priority Class of Service PCOS Public Class of Service PCP Peripheral Call Process PCP Primary Control Program PCP Primary Cross-connection Point PCP Printed Circuit Pack PCP Product Cost Performance PCP Protocol Conversion Permission PCPC Point Code Prohibited Control PCPM Packaged Core Power Module PCPS Private Carrier Paging System PCPT Precise Call Progress Tone PCQ Per-Call Queue PCR PC Resource (periodical) PCR Peak Cell Rate PCR Pont-to-Point SVC Cell Rate PCR Portable Common Runtime PCR Preventive Cyclic Retransmission PCR Program Clock Reference PCRT Process Cross-Reference Table PCS PC Services PCS PC Support/400 PCS Personal Call Screening PCS Personal Communications Server PCS Personal Communications Service PCS Personal Communications Services PCS Personal Communications System PCS Personal Communicator System PCS Personal Conferencing Specification PCS Physical Coding Sublayer PCS Plastic-Clad Silica PCS Plastic-Clad Silica (Fibre Optics) PCS Plesiochronous Connection Supervision PCS Point Coordinated Station PCS Power Conditioning System PCS Preliminary Commercial Specification PCS Processor Control System PCS Professional Communication Society PCS1900 Personal Communications Service working at 1900 MHz PCS911 PCS E911 PCSBSD Bell South-Only PCS Call Delivery PCSBSO Bell South-Only PCS Call Origination PCSC PCS Switching Center PCSDEL PCS Call Delivery PCSG Public Contracts Specialists Group PCSM Packaged Core Service Module PCSMWT PCS Message Waiting PCSO Power Control Safety Officer PCSORG PCS Call Origination PCSREG PCS Registration PCSS Personal Communications Satellite Service PCSS Programmable Cell Site Simulator PCT Macintosh PICT File PCT Per Call Type PCT Per CenT PCT Private Communications Technology PCT Protocol Conformance Testing PCT Public Cordless Telephone PCTA Personal Computer Terminal Adapter PCTE Portable Common Tool Environment (MAP/TOP) PCTF Per-Call Test Failure PCTJ PC Tech Journal (periodical) PCTM Packaged Core Trunk Module PCTR Protocol Conformance Test Report (ISO 9646) PCTS Public Cordless Telephone Service PCTS Public Cordless Telephone System PCU Paging Control Unit PCU Power Control Unit PCU Primary Control Unit PCUG Preferential CUG PCUP Pipelined Cyclic Upstream Protocol PCW PC World (periodical) P-CW PCS Call Waiting PCWG Personal Conferencing Work Group PCWT Precedence Call Wait Terminating PCX PC Paintbrush File PCX PC Paintbrush Format PCXM Packaged Core Expansion Module PD Packed Decimal PD Packet Data PD Parameter Downloading PD Partial Decorrelation PD Partial Dial PD Peripheral Device PD Permanent Data PD Personal Display PD Phase-Change Dual-Technology PD Photo Detector PD Photo Diode PD Photodetector PD Photodiode PD Physical Delivery PD Physical Design PD Polarity Detect PD Post Dialing PD Potential Difference PD Power Distribution PD PowerDrive PD Profile Directory PD Propagation Delay PD Protocol Discriminator PD Public Data PD Public Domain PD Pulse Dialling PD Pulse Duration PD&T Physical Design and Technology PD/CD Phase-Change Dual/CD-ROM PDA MDII: Partial Dial Abandon PDA Personal Digital Assistant PDA Power-Delay-Angle PDA Process Deviation Authorization PDA Programmable Digital Assistant PDAD Proposed DAD PDAS PCS Data Access Services PDATA POTS Data Unit PDAU Physical Delivery Access Unit PDB Program Database PDBCH Packet Data Broadcast Channel PDBN Parameter Downloading Bundled Notify PDBR Page Directory Base Register PDC Page Description Communications PDC Passive Dispersion Compensator PDC Personal Digital Cellular PDC Personal Digital Communications PDC Personal Digital Communicator PDC Plaza Distribution Center PDC Policy Drafting Party PDC Power Distribution Cabinet PDC Power Distribution Center PDC Primary Domain Controller PDC Processor Daughter Card PDC Professional Developers' Conference PDC Program Delivery Control PDC Propagation Delay Counter PDCH Packet Data Channel PDCH Physical Data Channel PDD Packet Mode Data Terminating on the D-Channel PDD Post Dialing Delay PDD Product Definition Document PDDA Physical Defined Display Area PDE Page Directory Entry PDE Parameter Departure Element PDE Picture Data Entity PDE Portable Data Entry (Unit) PDE Presentation Data Element PDE Product Development Environment PDE Professional Development Environment PDEF Physical Design Exchange Format PDES Product Data Exchange Standard (TOP) PDES Product Data Exchange Using STEP PDF Portable Document File PDF Portable Document Format PDF Post-Detection Filter PDF Power Density Function PDF Probability Density Function pdf Product Description File PDFFA Praesodymium-Doped Fluoride Fiber Amplifier PDG Program Dependence Graph PDG Program Dependency Graph PDH Plesiochronous Digital Hierarchy PDI Personal Data Interchange PDI Picture Description Instruction PDIAL Public Dialup Internet Access List PDIF Product Definition Interchange Format PDIL Partial Dial PDIL Plastic Dual-In-Line PDIP Plastic Dual In-line Package PDIP Plastic Dual-In-Line Package PDI-P Path Payload Defect Indication PDL Page Description Language PDL Parameter Downloading PDL Peripheral Diagnostic Language PDL Program Description Language PDL Project Description Language PDL Project Description Language File PDM Physical Data Model PDM Physical Data Move PDM Private Management Domain PDM Pulse Density Modulated PDM Pulse Duration Modulation PDMA Phase Division Multiple Access PDMA Polarisation Division Multiple Access PDMA Provisioning-Driven Memory Administration PDMX Programmable Digital Multiplexer PDN Packet Data Network PDN Parameter Downloading Notification PDN Passive Distribution Network PDN Plesiochronous Digital Network PDN Positive Delivery Notification PDN Power-DowN PDN Premises Distribution Network PDN Primary Directory Number PDN Prime Directory Number PDN Public Data Network PDNP Parameter Downloading Notification Process PDO Packet Data Optimized PdO Palladium Oxide PDO Performance Design Objective PDO Portable Distributed Object PDO Portable Distributed Objects PDP Packet Data Protocol PDP Parallel Data Processing PDP PDN Protocol PDP Plasma Display Panel PDP Power Delay Profile PDP Process Database PDP Process Development Plan PDP Programmed Data Processor PDP Project Development Plan PDPS Product Definition Process and Solutions PDQ Parameter Departure Queue PDQP Project Development Quality Plan PDR Physical Data Receiver PDR Pulse Density Requirement PDS Pack Driver Specification PDS Partitioned Data Set PDS Persistent Data Service PDS Physical Delivery Service PDS Physical Delivery System PDS Planetary Data System PDS Power Distribution Shelf PDS Power Distribution System PDS Premises Distribution System (ATT) PDS Priority Distribution System PDS Processor Direct Slot PDS Program Documentation Standard PDS Project Data Server PDSO Packet Data Security Overlay PDSS Procurement Decision Support System PDT MDII: Partial Dial Timeout PDT Pacific Daylight Time PDT Performance Diagnostic Tool PDT Physical Data Transmitter PDT Portable Data Terminal PDT Prefix Digit Translation PDT Product Development Team PDT Program Development Tool PDT Project Development Tool PDT Protel Development Tool PDT Protel-2 Development Tool PDTC PCM-30 Digital Trunk Controller PDTE Packet Data Terminal Equipment PDU Packet Data Unit PDU Payload Data Unit PDU Plug Distribution Unit PDU Port Data Unit PDU Power Distribution Unit PDU Protocol Data Unit PDV Performance Data Visualization PDV Presentation Data Value PDV Prozess-Daten-Verarbeitung PE Emergency Proving Period Pe Emergency Proving Period PE ISO country code for Republic of Peru PE Packet leyer reference Event PE Parity Error PE Path End PE Pathend PE Peripheral Equipment PE Phase Encoded PE Phase Encoded (Digital Magnetic Disk/Tape Recording Format) PE Phase Encoding PE Physical Entity PE Pictorial Element PE Picture Element, pixel PE Picture Entity PE Port Enable PE Portable Executable PE Postal code for Prince Edward Island PE Presentation Element PE Probable Error PE Processing Element PE Processor Element PE Programming Enabled PE Protection Enable PE Protective conductor PE Protective Earth PE Public Enquiry (ETSI) PE Public Environment PEB Peripheral Expansion Bus PEB Process Environment Block PEC Peak Digital Eye Closure PEC Product Engineering Code PEC Product Equipment Code PEC Public Extension Circuit PECC Product Engineering Control Center PECR Pan European Cellular Radio PECS Pan-European Cellular System PED Protocol Encoder/Decoder PEDN Pan-European Digital Network PEDP Public Environment Dial Plan PEE Processing Element Emulator PEF Preferred Executable Format PEFS Percentage Error Free Seconds PEG Photographic Experts Group PEG Process Engineering Group PEG Public, Educational, or Governmental Access PEGAD Permission Granted To Add PEI Peak Emission Interval PEI Progress Event Information PEL Picture ELement PEL Public Environment Element pel (pixel) picture element PELV Protective Extra Low Voltage PEM Privacy Enhanced Mail PEM Processing Entity Maintenance PEN combined Protective conductor and Neutral conductor PENBAL Peninsular Spain-Balearic Islands submarine cable PENC Maximum Number of Protocol Errors Not Associated With A Call, Clas s I PENCAN Peninsular Spain-Canary Islands submarine cable PENCII Maximum Number of Protocol Errors Not Associated With A Call, Clas s II PEND Pending Order System PEo Originating Pathend PEO Polymorphic Embedded Object PEO Professional Engineers Ontario PEP Packet Ensemble Protocol PEP Peak Envelope Power PEP Preemptive External Priority PEP Protocol Extension Protocol PEPR Physical End Point Reference PER Packed Encoding Rules PER Packet Error Rate PER Permission PERF PERForator Perl Practical Extraction and Report Language perl Practical Extraction and Report Language pero Parameter Entity Reference Open PERT Program Evaluation and Review Technique PES Packetized Elementary Stream PES Percentage Errored Seconds PES Power and Environmental Systems PES Privacy Enhanced Sockets PES Proposed Encryption Standard PET Positron Emission Tomography PET PSTN Enhanced Trunk PEt Terminating Pathend PETAR Pan European Television Audience Research PETS Parameterized Executable Test Suite PEV Peak Envelope Voltage PEX Packet Exchange Protocol PEX PHIGS Extension to X Window System PEX-SI PEX Sample Implementation PF ISO country code for French Polynesia PF Parameter Format PF Parity Flag pf Picofarad PF Power Factor PF Power Failure PF Power Feature PF Presentation Function PF Program Feature PF Programmable Function PF Protocol Family PF Pulse Frequency PF Punch ofF PFA Packet and Frame Access PFA Page Frame Address PFA Perfluoralkoxy PFA Project Feedback Assessment PFA Protocol Fault Analyzer PFAC Private Facility Access PFAR P Bus Fault Address Register PFB Provisional Frequency Board PFBPSM Protected Fixed Block Pool Store Manager PFC Port Flow Control PFC PowerBuilder Foundation Classes PFC Protocol Field Compression PFD Power Flux Density PFE Passive Feature Element PFE Power Feed Equipment PFEP Programmable Front-End Processor PFG PathFile Generator PFG Private Facility Group PFI Pbus-Fbus Interface PFI Physical Fault Insertion PFIX Power Failure Interrupt PFJ Parts for Java PFK Program Function Key PFM Parameter Frame Management PFM Printer Font Metrics PFM Proto Flight Model PFM Pulse Frequency Modulation PFN Page Frame Number PFN Physical Frame Number PFN Pseudo Facility Number PFN Pulse Forming Network PFP Preemptive Fixed Priority PFQ Performance Feedback Questionaire PFR MDII: Polarity Failure PFR Periodical Physical Frame Sublayer PFR Power-Fail Restart PFS Physical File System pFS Primary Frequency Supply PFSR P Bus Fault Status Register PFT Page Frame Table PFX Personal Information Exchange PFX Prefix PFXA Prefix Announcement PG ISO country code for Papua New Guinea PG PaGe PG Paging PG Pattern Generator PG Peer Group PG Protective Ground PG Pulse Generator PGA Page Always PGA Pin Grid Array PGA Pin Grid Array (VLSI Packaging) PGA Professional Graphics Adapter (PC's) PGA Programmable Gate Array PGC Polynomial Generator Checker PGC Positive Graphic Controller ("Paper-white" Screen) PGI Parameter Group Identifier PGID Peer Group Identifier PGID Process Group ID PGL Peer Group Leader PGM Portable Graymap PGM ProGraM PGML Precision Graphics Markup Language PGN Portable Game Notation PGP Pretty Good Privacy PGP Pretty Good Protection PGPS Packet Generalized Processor Sharing pgs Pages PGS Pair Gain System PGS Professional Graphical system (IBM) PGTC Pair-Gain Test Controller PH Data Link Layer (Layer 2)-Physical Layer (Layer 1) Interface PH ISO country code for Republic of the Philippines PH Packet Handler PH Page Header PH Phantom Circuit PH Phase PH PHysical (layer) PH Physical Layer PH Physical Layer Service Ph Physical Layer Service PH Prentice Hall PH Presentation Header PH Protocol Handler PH- communication between data link layer and PHysical layer PHA Protocol Handler for ATM PH-AI Primitive Activate Indication PHARE Poland-Hungary Assistance on the Economic Reconstruction PHASE Philips Advanced Synchronous Equipment PhC Physical Connection PHC Positive High Current PHD Permanent Hold PHd Pocket Hard-disk PH-DI Primitive De-activate Indication PHF Packet Handler Function PHF Packet Handling Function PHGI Programmer Hierarchical Graphics Interface PHI Packet Handler access point Interface PHI Packet Handler Interface PHIGS PHotorealistic Interactive Graphic System (3-Dimensional Imaging S tandard) PHIGS Programmer's Hierarchical Interactive Graphics Standard PHIGS Programmer's Hierarchical Interactive Graphics System PHILSIN Philippines-Singapore submarine cable PHIU Packet Handler Interface Unit PHL PHysicaL PhL PHysical Layer (OSI) PHM Packet Handling Module PhM PHase Modulation PHOTAC Photo Typesetting And Composing PHP Personal Handy Phone PHP Pocket Handy Phone PHS Personal Handy Phone System PHS Personal Handyphone System PhS PHysical Service PHS Portable HandSet PHT Packet Hashing Table PHV Protocol Handler for Voice PHY Physical PHY Physical Layer PHY Physical Medium Dependent Sublayer PHZ Pre-Handover Zone PI Parameter Identifier PI Participant Information PI Pause Insertion PI Peripheral Interface PI Personality Interface PI Physical Interface pi Pica PI Picture Identifier PI Presentation Indicator PI Privacy Indicator PI Private Interface PI Process Instructions PI Processor Interface PI Product Improvement PI Product Integrity PI Program Identified PI Progress Indicator PI Protocol Identifier PI Protocol Interpreter PIA Peripheral Interface Adapter PIA Personal Information Appliance PIAS PCS Integrated Access Systems PIAT Peripheral Interface And Timer PIC Payload Integrity Check PIC Peripheral Interface Card PIC Peripheral Interface Controller PIC Personal Identification Code PIC Personal Intelligent Communicator PIC Plastic-Insulated Cable PIC Point In Call PIC Polyethelene Insulated Cable PIC Polyolefin Insulated Cable PIC Position-Independent Code PIC Power Integration Coordinator PIC Preferred Interexchange Carrier PIC Pre-subscribed Interexchange Carrier PIC Primary Interexchange Carrier PIC Primary InterLATA Carrier pic Processing Instruction Close PIC Programmable Interrupt Controller PIC Protocol Implementation Conformance PICB Peripheral Interface Control Bus PICC Primary Interexchange Carrier Charge PICH Pilot Channel PICS Platform for Internet Content Selection PICS Platform for Internet Content Specification PICS Plug-in Inventory Control System PICS Protocol Implementation Conformance Statement PICT Macintosh Bitmap File PID Packet Identifier PID Parameter Identifier PID Password Identification PID Persistent Identifier PID Persistent Object ID PID Personal Information Delivery PID Portable Identification Code (=MIC+HIC) PID Private Identifier PID Process ID PID Process Identifier PId Process Identifier PID Processor Identification PID Processor Identification Register PID Proportional/Integral/Differential (Controller) PID Protocol Identifier PIDB Peripheral Interface Data Bus PIDL Pseudo IDL PIE Product Information Environment PIE Protocol Independent Environment PIEEE Proceedings of the IEEE PIER Procedures for Internet/Enterprise Renumbering PIF Physical Interface PIF Program Information File PIFS Point Coordination Function Interframe Space PIG Practical Information Guide (ETSI) PIG Process Improvement Group PIGI Processor Interface to Gigabit Interconnect PIGUI Platform-Independent GUI PIH Pin In Hole PII Pentium II PIL PILot PILOT Pilot Directory Number PIM Personal Information Management PIM Personal Information Manager PIM Process Information Model PIM Protocol-Independent Multicast PIM Pulse Interval Modulation PIM-DM Protocol Independent Multicast-Dense Mode PIMRC Personal, Indoor and Mobile Radio Communications PIM-SM Protocol Independent Multicast-Sparse Mode PIN Personal Identification Number PIN P-Intrinsic Diode PIN Positive material-Intrinsic-Negative material PIN Positive-Insulator-Negative PIN Positive-Intrinsic-Negative PIN Procedural Interrupt Negative PIN Public Infrastructure Network PIN Public Initiating Node PINC Preferred International Carrier PINC Preferred International IC Indicator PINCI Preferred International Carrier Indicator PIND Particle Impact Noise Detection PIND PIN Digits Pine Program for Internet News & Email PINEC Private Networks and Interexchange Carriers PING Packet Internet Groper PING Packet Internet Groper (test tool for Ethernet) PINT PSTN and Internet Interworking PINX Private Integrated Network eXchange PINX Private Integrated Network Exchange PINX Private Integrated Services Network Exchange PIO Parallel Input/Output pio Processing Instruction Open PIO Programmable Input/Output PIO Programmed Input/Output Pip "P" Internet Protocol PIP Partners in Provisioning PIP Peripheral Interchange Program PIP Peripheral Interface Process PIP Peripheral Interface Processor PIP Personal Information Processor PIP Picture in Picture PIP Procedural Interrrupt Positive PIP Product Integration Program PIP Product Introduction Planning PIP Product Introduction Procedure PIP Proposed Implementation Plan PIPO Parallel-In Parallel-Out PIPO Platform-Independent Portable Objects PIR Peak Information Rate PIR Program Interrupt Request PIRS Personal Information Retrieval System (PC Data Base) PIS Procedure Interrupt Signal PIS Product Interface Specification PIS Project Information Summary PISN Private Integrated Services Network PISN Private Integrated Services Networking PISO Parallel-In Serial-Out PISTOL IBM PC-based ISDN Test Tool PIT Participant Information Time PIT Personal Information Telecommunication PIT Process Improvement Team PIT Programmable Interval Timer PITCOM Parliamentary Information Technology COMmittee (UK) PIU Path Information Unit (SNA) PIU Peripheral Interface Unit PIU Plug In Unit PIV Peak Inverse Voltage PixBlt Pixel Block Transfer pixel picture element PIXIT Protocol Implementation Extra Information for Testing PIXIT Protocol Implementation eXtra Information for Testing PJ Pointer Justification PJC Pointer Justification Count PJE Pointer Justification Event PJL Printer Job Language PJPEG Progressive JPEG PK ISO country code for Islamic Republic of Pakistan PK Protection Key PK Protocol Kernel PK Public Key PKCS Public Key Crypto System PKCS Public Key Cryptography Standards PKCS Public Key Crypto-System PKE Public Key Encryption PKERN Protocol Kernel pkern Protocol Kernel PKI Philips Kommunikations Industrie PKI Public Key Infrastructure PKIX Public Key Infrastructure Working Group PKMS Public Key Management System PKP Public Key Partners PKT Packet PL ISO country code for Polish People's Republic (Poland) PL PAD Length PL Parameter Length PL Party Line PL Path Loss PL Permanent Line PL Photoluminescence PL Physical Layer PL Planning Letter PL Precedence Level PL Presentation Layer (OSI) PL Private Line PL Programming Language PL Proprietary Link PL&T Programming Languages and Tools PL/1 Production Level 1 PL/1 Programming Language One PL/2 Production Level 2 PL/I Programming Language One PL/M Programming Language for Microcomputers PL/M Programming Language for Microprocessors PL1 Proprietary Link 1 PL2 Proprietary Link 2 PL3 Proprietary Link 3 PLA Physical Level Adapter PLA Plex Load Appraisal PLA Programmable Logic Array PLACO PLAnning COmmittee (ISO) PLAR Private Line Automatic PLAS Private Line Assured Service PLATINUM Platform providing Integrated services to New Users of Multimedia PLB Personal Locator Beacon PLBP Packet-Layer Binary Parameters PLC Permanent Logical Connection PLC Physical Layer Control PLC Planar Lightwave Circuit PLC Plant Level Controller PLC Positive Low Current PLC Power Line Carrier (Telecommunication over power lines) PLC Powerline Communication PLC Power-Line Communication PLC P-phone Line Card PLC Private Leased Circuit PLC Private Line Concentrator PLC Product Line Center PLC Programmable Logic Controller PLCA Personalized Local Calling Area PLCA Programmable Logic Cell Array PLCC Plastic Lead Chip Carrier PLCC Plastic Leadless Chip Carrier PLCP Physical Layer Convergence Procedure PLCP Physical Layer Convergence Protocol PLD Partial Line Down PLD Physical Line Drawer PLD Power Line Disturbance PLD Programmable Logic Device PLE Path Length Efficiency PLE Programmable Logic Element PLGA Plastic Land-Grid Array PLGC PCM-30 Line Group Controller PLI Park Length Indicator PLI Physical Layer Interface PLIN Point List Index Number PLIT Prohibit Line Insulation Testing PLK Primary Link PLL Permanent Logical Link PLL Permanent Logical Loop PLL Phase-Locked Loop PLL Physical Link Sublayer PLLC Permanent Logical Link Connection PL-LCD Photoluminescent Liquid Crystal Display PLM Path Label Mismatch PLM PCM Level Meter PLM Physical Link Maintenance PLM Product Line Management PLM Product Line Manager PLM Pulse Length Modulation PLM Pump Laser Module PLMN Public Land Mobile Network PLMR Private Land Mobile Radio PLMTS Public Land Mobile Telecommunication Systems PLO Permanent Lockout PLO Permanently Locked Out PLO Phase Locked Oscillator PLOAM Physical Layer OA&M PL-OAM Physical Layer Operation and Maintenance PLOP Pattern Languages of Programs PL-OU Physical Layer Overhead Unit PLP Packet Layer Procedures PLP Packet Layer Protocol PLP Packet-Level Procedure PLP Plug-Up PLPP Physical Layer Protocol Processor PLR Pulse Link Repeater PLS Personal Library Software PLS Physical Layer Service PLS Physical Layer Signalling (IEEE 802) PLS Physical Signaling PLS PhysicaL Signalling PLS Prime Line Select PLS Private Line Service PLS Product Library System PLS Program Load Segment PLSQ Packet Layer Sequencing PLSQ Packet Level Sequencing PLT Parallel Lower Tester PLT Procedure Linkage Table PLTC PCM30 Line/Trunk Controller PLTTY Private Line Teletypewriter Service PLU Partial Line Up PLU Primary Logical Unit PLUS Peripheral Life Upgrade Strategy PLV Presentation-Level Video PLV Production Level Video PLWS Packet-Layer Window Size PM ISO country code for Saint Pierre and Miquelon PM Packet Mode PM Packet Multiplexer PM Performance Management PM Performance Monitoring PM Peripheral Module PM Person Month PM Personal Mobility PM Phase Modulation PM Photo Multiplier PM Physical Medium PM Picture Mode PM Post Meridian PM Power Management PM Presentation Manager PM Preventative Maintenance PM Preventive Maintenance PM Primary Maintenance PM Privacy Message PM Process Manager PM Process Monitor PM Processable Mode PM Profile Manipulation PM Project Management PM Project Manager (ETSI) PM Protocol Machine PM Pulse Modulation PM11 Processable Mode No. 11 PMA Period Measurement with Additional Transition Detection PMA Physical Medium Attachment PMA Prompt Maintenance Alarm PMAC Performance Monitoring Adjunct Circuit PMAN Personal MOBITEX Access Number PMAP Personal Mobility Application Part PMB Peripheral Module Busy PMB Pilot Make Busy PMB Processor-Memory Bus PMBS Packet Mode Bearer Service(s) PMBX Private Manual Branch Exchange PMBX Private Manual Branch eXchange PMC PCI Mezzanine Card PMC Peripheral Component Interconnect Mezzanine Card PMC Peripheral Message Controller PMC Personal Mobile Communicator PMC Port Message Channel PMC Printed Meter Check PMC Private Meter Check PMC Process Management Council PMC Project Management and Committee support department (ETSI) PMD Packet Mode Data PMD Packet-Mode Data PMD Physical Layer Medium Dependent PMD Physical Media Dependent PMD Physical Media Dependent Layer (FDDI) PMD Physical Medium Dependent PMD Polarization Mode Dispersion PMDARI Packet-Mode Data Aggregate Recording Interval PMDB Packet-Mode Data Billing Records PMDB Personal Mobility Database PMD-B Packet Mode Data on the B-Channel PMD-D Packet Mode Data on the D-Channel PMDE Peripheral Module Development Environment PMDEBUG Peripheral Module Debug PMDIPVCB Packet-Mode Data Intercom PVC Calls Billing Records PMDIVCB Packet-Mode Data Intercom Virtual Calls Billing Records PMDVCB1 Packet-Mode Data Virtual Circuits Billing Records for Type 1 Usage PMDVCB2 Packet-Mode Data Virtual Circuit Billing Records for Type 2 Usage PME Previous Message Error PMEXEC Peripheral Module Executable Program PMF Parameter Management Frame PMF Primary Master Format PMFDA Packet Module File Data Access PMFJI Pardon Me For Jumping In PMH Protocol Message Handler PMHS Private Message Handling System PMI Performance Monitoring Inhibited PMI Peripheral Module International PMID Portable Part MAC Identity PMIST Peripheral Module Intercept System Test PML Peripheral Messaging Link PML Peripheral Module Load PML Phone Markup Language PML Process Maturity Level PML Programmable Macro Logic PMLCD Passive-Matrix LCD PMLT Prohibit Mechanized Line Testing PMM Period Measurement with Missing Transition Detection PMM Personal Mobility Manager PMMA Polymethyl Methacrylate PMMU Paged Memory Management Unit PMO Present Method of Operation PMO Process Management Object PMO Project Management Office PMON Power Supply Monitor PMOS P-Channel Metal Oxide Semiconductor PMOSFET p-Type MOSFET PMP Parallel Multi-Path PMP Point-to-Multipoint PMP Process Management Process PMP Project Management Plan PMP Protected Monitoring Point P-MP Point to MultiPoint p-mp Point-to-Multipoint PMR Private Land Mobile Radio PMR Private Mobile Radio PMR Public Mobile Radio PMRO Pilot Measurement Request Order PMS Pantone Matching System PMS Performance Management System PMS Permitted Maximum Signal PMS Processor, Memory, Switch PMS Production Management System PMS Property Management Systems PMS Public Message Service PMT Personal Mobile Telecommunications PMT Photomultiplier Tube PMT Process Management Team (ETSI) PMT Program Management Team PMT Program Map Table PMTS Pruefen, Messen und Melden fur die DSt TS (Q-3 Based Testing, Measuring, and Recording for TS Service Center) PMTS Pruf-, Mess- und Meldesystem fur den Telekom Service (Q.3-based testing, measuring and recording for TS service centre) PMTU Path Maximum Transmission Unit PMU PLL Management Unit PMVC Permanent Multicast Virtual Circuit PMX Packet MultipleXer (ISDN) PMX Private Manual Exchange PMxAs Primaermultiplexanschluss (Primary Access Unit) PN ISO country code for Pitcairn Island Pn Normal Proving Period PN Packet Number PN Part Number PN Peripheral Node PN Permanent Nucleus PN Permanent Nucleus (CEPT) PN Personal Number PN Physical Network PN Polish Notation (Calculators) PN Private Network PN Pseudonoise PN Pseudorandom Noise PN Pseudo-Random Number PN Public Network PN Publication Note PN PuNch off p-n Postive-Negative PNA Packet Network Adapter PNA Parallel Network Architecture PNA Per Node Aggregator PNA Phoneline Networking Alliance PNB Pacific Northwest Bell Telephone PnB Provisioning and Billing PNC Paging Network Controller PNC-H Paging Network Controller- Home PNC-H(DIV) Divert Adc's Home Paging Network Controller PNC-H(FS) Fixed Subscriber's Home Paging Network Controller PNC-I Paging Network Controller- Input PNC-OS Paging Network Controller- Operations System PNCP Peripheral Node Control Point (SNA) PNCS Passport Network Clock Synchronization PNC-T Paging Network Controller- Transmit PND Personal Name Delivery PND Present Next Digit PND Private Network Traveling Class Mark Digits PND Public Networks Development PNDDB Personal Name Delivery Database PNE Parameter Notification Element PNE Path Number Efficiency PNE Présentation des Normes Européennes (CEN/CENELEC) PNFC Primal Network Flow Convex PNG Portable Network Graphics PNI Permit Next Increase PNI Privacy Name Indicator PNI Privacy of Name Indicator PNIC Private data Network Identification Code PNID Precedence Network In-Dialing P-NID Precedence Network In-Dialing PNLU Public Network serving the Local User PNM Portable Any Map PNM Pulse Number Modulation PNNI Private Network-Network Interface P-NNI Private Network-to-Network Interface PNO Public Network Operator PNOIG Public Network Operators Interconnect Group PnP Plug and Play PNP Positive-Negative-Positive PNP Private Numbering Plan p-n-p Positive-Negative-Positive PNQ Parameter Notofication Queue PNR Private Network Record PNR Private Number Rejection PNS Personal Number Service PNS Private Network Signalling PNT Paint document file PNT Private Network Termination PNVS Pilot Night Vision Sensor (Military Avionics) PNWB Pacific Northwest Bell PNX Private Network Exchange PO Parameter Object PO Partial Outage PO Pending Order PO Persistent Object PO Post Office PO Presentation Object classes PO Primary Objective PO Protocol Object PO Protocol Operation PO Punch PO Purchase Order POA Portable Object Adapter POA Post Office Agent POACH Personal computer On-A-CHip (ZyMOS Inc.) POC Point of Contact POC Power-On Confidence POC Processor Outage Control POCE Pantone Open Color Environment POCSAG Post Office Code Standardisation Advisory Group POD Pay On Delivery PODP Public Office Dialing Plan PODS Plain Old Digital Services POEEJ The Post Office Electrical Engineers' Journal (periodical) POF Pending Order File POF Plastic Optical Fiber POF Point of Failure POFID Pending Order File Identifier POFS Private Operational Fixed Services POGA Pictures of Graph Algorithms POH Path Overhead POI Path Overhead Indicator POI Point of Initiation POI Point Of Interconnection (with PSTN) POI Point of Interface POL POLarisation POL Policy file POL Portable Originated Link POL Problem Oriented Language POLL Polled POM Path Overhead Monitoring POM Persistent Object Manager POMMO Page OMMO POMS Port Management System PON Passive Optical Network PON Purchase Order Number POO Post Office Order POP Percentage of Ownership times Population of the market POP Performance-Oriented Practice POP Picture Outside Picture POP Point of Presence PoP Point of Presence POP Post Office Protocol POP Procedure-Oriented Practice POP2 Post Office Protocol 2 POP3 Post Office Protocol 3 POPL Principles of Programming Languages POR Pacific Ocean Region (INTELSAT) POR Plan of Record POR Plan of Reorganization POR Point of Return POR Power On Reset PORS Path-Oriented Routing Software PORS Path-Oriented Routing System POS Packet Over SONET POS Passive Optical Splitter POS Persistent Object Service POS Point of Sale POS Point of Synchronization Pos Position POS Positive POS Priority On-Site service POS Programmable Option Select POSE Portable Operating System Extension POSI Promotion Conference for OSI POSIX Portable Operating System for computer environment (IEEE/UNIX) POSIX Portable Operating System Interface POSIX Portable Operating System Interface based on UNIX POSIX Portable Operating System Interface for Computer Environments POSIX Prortable Operating System Interface for Unix POSR Private Operator Services Record POST Power On Set Test POST Power-On Self Test POT Plain Ordinary Telephone POT Point of Termination POT(S) Plain Old Telephone (Service) POTS Plain Old Telephone Service POTS Plain Ordinary Telephone Service POTV Plain Old Television POV Persistence of Vision POV Point of View POWER Performance Optimization With Enhanced RISC PP Packet Pipe pp Pages PP Paper tape Punch PP Parallel Port PP ParcPlace PP Peripheral Processor PP Pointer Processor PP Point-to-Point PP PolyPropylene PP Portable Part PP Power Platform PP PowerPC Platform PP Preceding Page PP Preferred Plane PP Preplan PP Previous Page PP Program Port PP Project Plan PP Protocol Processor PP Provisioning Point p-p peak-to-peak p-p Point-to-Point PP1 Power Platform, Type 1 PP2 Power Platform, Type 2 PPA Physical Point of Attachment PPA Plesiochronous Path Adaptation PPA Position Probability Area (ship-navigation) PPA Primary Physical Address PPB Parts Per Billion PPB Permanent Packet B Channel PPBL Peripheral Platform Base Library PPC Packet Processing Complex PPC Pay-Per-Channel PPC Peak Power Control PPC Portable Personal Computer PPC PowerPC PPC Pre-emptive Priority Call (TETRA) PPC Prepaid Card PPC Primary Point Code PPC Pump Peripheral Controller PPCH Packet Paging Channel PPCS Person to Person Collect and Special Instruction PPD ParcPlace-Digitalk PPD Partial Packet Discard PPD PostScript Printer Description PPDCI Provisioning PSE Driver CI PPDF Programmable Pulse Driver/Formatter (High-Speed GaAs IC,Harris) PPDN Public Packet Data Network PPDTR Preplanned Dynamic Traffic Routing PPDU Packet Data Protocol PDU PPDU Presentation Protocol Data Unit PPE Packet Processing Element PPE Personal Protective Equipment PPE Primative Procedure Entity PPE Primitive Procedure Entity PP-EOC Point-To-Point Embedded Operations Channel pp-eoc Point-To-Point Embedded Operations Channel PPF Photosensitive Polymer Film PPF Primitives Processing Function PPFY Post Programming Functional Yield (PAL Devices) PPG Public Procurement Group PPGA Plastic Pin-Grid Array PPhone Proprietary Phone P-Phone Proprietary Phone PPI Phase Parity Identifier indicating which CW must be used for descr ambling PPI Plan Position Indicator (radar) PPI Plesiochronous Physical Interfaces PPI Precise-Pixel Interpolation PPI Processor Peripheral Interface PPI Program Port Interface PPI Programmable Peripheral Interface PPIC Primary Preferred IC Indicator PPIC Primary Preferred Interexchange Carrier PPICI Primary Preferred Interexchange Carrier Indicator PPID Parent Process ID PPK Perimeter Park PPL Point-to-Point Link PPL Pre-Patched XPM Load PPL Product PM Lineup PPL Programmable Path Logic PPL PVN Priority Line PPLN Preplan ppm Pages Per Minute PPM Pages Per Minute (Printers) ppm parts per million PPM Periodic Pulse Metering PPM Peripheral Processor Message PPM Portable Pixmap PPM Presentation Protocol Machine PPM Pulse Phase Modulation PPM Pulse Position Modulation PPMP Peripheral Processor Message Processor PPN Process Primes Network PPP Paging Party Pays PPP Parametric Performance Prediction PPP Point-to-Point serial-line Protocol (IETF/TCP/IP) PPP Priority Bits PPP-M PPP Multilink PPPML PPP Multilink PPQFP Power Plastic Quad Flat Pack PPQN Parts Per Quarter Note PPR Partial Page Request PPR Path-Protected Ring PPR Pulsed Progressing Read-out (TV Cameras) PPRCH Packet Paging Response Channel Ppriv Private Photographic Profile PPRS Public Policy and Regulatory Solutions PPS Packets Per Second (PSDN/X.25) PPS ParcPlace Systems PPS Partial Page Signal PPS Path Protection Switching PPS Permanent Presentation Status PPS Port Presentation Services PPS Pre-/Post-Service PPS Preliminary Product Specification PPS Public Packet Switched Network PPS Pulses Per Second PPSC-IT Public Procurement SubCommittee for Information Technologies (CEC) PPSC-IT Public Procurement Subcommittee-Information Technology Sector PPSN Public Packet-Switched Network PPSNGR Public Packet Switched Network Generic Requirements PPSRV Pre/Post-Service PPSS Public Packet Switched Services PPST ParcPlace Smalltalk PPT Packet Payload Type PPT Permanent Part Time PPT PowerPoint PPTM Protocol Profile Test(ing) Methodology PPTP Point-to-Point Tunneling Protocol PPTU PDUs Per Time Unit PPU Packet Processing Unit PPV Pay Per View PPV Pay-Per-View PPV Perprocess Vector ppv Perprocess Vector PPVM Peripheral Processor Virtual Machine PPVW ParcPlace VisualWorks PPWA Period/Pulse-Width Accumulator PPx Power Platform, Type x PPXL PrePatched XPM Load PQ Postal code for Quebec PQ Primary Questionnaire (CEN) PQ Priority Queuing PQ Product Quality PQET Print Quality Enhancement Technology PQFP Plastic Quad Flat Pack PQFP Plastic Quad Flat Package PQH Packet Query Handler PQR Patch Quality Record PQR Post-Queue Routing PR ISO country code for Puerto Rico PR Paging Receiver PR Paper tape Reader PR Partial Response PR Path Replacement PR Pattern Recognition PR Phase Recording PR Photoresist PR Phrase Representation PR Phrase SDL Representation PR Preamble PR Preference PR Premature Release PR Pre-Release PR Preroute PR Presentation Restriction PR Primary Radar PR Primary Residential PR Priority PR Product Reliability PR Program-Like Representation PR Pseudo-Random PR Public Relation PR Pulse Rate PR Pulsing Relay PR1 Priority One Line PR2 Priority Two Line PR4ML Partial Response Class 4 Maximum Likelihood PRA Primary Rate Access PRA Product Release Authorization PRACH Packet Random Access Channel PRACL Page-Replacement Algorithm and Control Logic PRAG Primary Rate Agency PRAM Parallel Random-Access Machine PRAM Parameter RAM PRART Problem Reporting and Resolution Tracking PRB Primary Reference Burst PRB Process Review Board PRB Product Release Baseline PRBS Pseudo-Random Binary Sequence PRBS Pseudo-Random Binary Source PRBS Pseudo-Random Bit Sequence PRBS(215-1) Pseudo Random Bit Sequence as defined in subclause 2.1 of CCITT Re commendation O.151 PRBX Polled Report-By-Exception PRC Primary Reference Clock PRC Primary Routing Center PRC Priority Request Channel PRC Processor Return Code PRC Protocol Reference Configuration PRCA Proportional Rate Control Algorithm PRCC PCM-30 Remote Cluster Controller PRD Performance Requirement Document PRD Pseudo-Random Data PRDB Policy Routing Database PRDI Path Remote Defect Indication PRDMD Private Directory Management Domain PRDN Primary DN PRE Preemption PRE PREfix PRE Preformatted Text (HTML tag) PRE Preliminary PRE Prepay Coin Telephone PRE Protectional Reservation Equipment PRE Protective Reservation Equipment PREAM Preamble Pref CUG Preferential CUG PREL Planned Release prEN Proposed European Standard PReP PowerPC Reference Platform PREP Project Review Establishing Priorities PREST Politique de REcherche Scientifique et Technique (EEC) prETS Preliminary European Telecommunications Standard PRF Pulse Repetition Frequency PRFCUG Preferential Closed User Group PRFD Pulse Recurrence Frequency Discrimination PRFHNT Preferential Hunt PRFLST Preferential Hunt List PRFM Performance PRG Progress Indicator message PRG Progress Information PRG Purge PRH Preferential Hunt PRH Primary Hunt PRHW Plane Resolution Hardware PRI Personal Identification Number Restriction Indicator PRI Pre-Release Indication PRI Primary PRI Primary Rate Interface PRI PRIority PRI PRocedure Interrupt PRI Protection Release Inhibited PRIBCH PRI B-Channel Trigger PRID2E Portfolio Renewal through Integrated Design and Delivery Excellenc e PRI-ISDN Primary Rate ISDN PRINAME Primary Rate Interface Name PRINCE-S Private-Network Computer-Based Expert System for Synchronization PRIPUB2WAY PRI 2-Way Traffic, from/to Public Network PRIPUBIN PRI Inward Traffic, from Public Network to PRI PRIPUBOUT PRI Outward Traffic, from PRI to Public Network PRISM Protocol Independent Set of Messages PRISS Primary Rate Interface Service Supervisor PRJ Project File PRK Call Park PRL Peripheral Recovery Loader PRL Peripheral Remote Loader PRL Population Rule Language PRL Privacy Release PRM Packet Radio Measurement PRM Packet Radio Monitoring PRM Performance Report Message PRM Physical Resource Manager PRM Premium Rate PRM Processor Recovery Message PRM Programmer's Reference Manual PRM Protocol Reference Model PRM Pulse Rate Modulation PRMA Packet Reservation Multiple Access PRMC Premium Charging PRMD PRivate Management Domain (MHS/X.400) PRML Partial Response Maximum Likelihood PRMP Product Release Management Process PRN Periodic Ring Notification PRN Print File PRN Printer PRN Pseudo-Random Noise PRNA Private Network Access Billing Records PRNET Packet Radio Net PRNG Pseudorandom Number Generator PRO Planning and Reporting Officer (ETSI) PRO Processor Outage PROC Procedure PROC Processor PROCVAR Procedure Variable procvar Procedure Variable PRODAT Planungssystem fur digitale Anschlusse (Planning System for Digital Lines) PRODID Product Identifier ProdID Product Identifier PROFOT Productization Focus Team PROFS PRofessional OFfice System (SNA) PROG Program PROG Progress message PROLOG Programming in Logic PROLOG PROgramming in LOGics (Groupe d'Intelligence Artificielle) PROM Programmable Read-Only Memory PROMETHEUS Programme for a European traffic system with highest efficiency an d unprecedented safety PROMETHEUS PROgraMme for European Traffic with Highest Efficiency and Unprece dented Safety PROMIS-SS PROvisioning and Maintenance Info System-Special Services (CSC-ATT ) ProSTAR Problem and Service Tracking and Reporting System PROT Protected Store PROTEL Procedure-Oriented Type Enforcing Language PROTEL-2 Procedure-Oriented Type Enforcing Language-2 PROV Provisioning PROVE Provision of Verification PROX Prohibit Interexchange Carrier Selection PRP Path Replacement Propose PRP Preroute Peg Count PRP Primary Routing Point PRR Path Replacement Re-use PRR Previously Rerouted PRR Pulse Repetition Rate PRREC Premium Rate Recording PRRM Pulse Repetition Rate Modulation PRRR PRR Result PRS Pairs PRS Path Replacement Setup PRS Premium Rate Service PRS Primary Reference Source PRS Print Services PRS Problem Reporting System PRS Problem Resolution System PRS Pseudo Random Sequence PRS Pseudo-Random Sequence PRS CAT PRS Categorization PRSB Pseudo-Random Sequence Binary PRSDOC PRS Document PRSG Pseudo-Random Sequence Generator prsid PRS Identifier PRSM Post Release Software Management PRSM Post Release Software Manager PRSM Post-Release Software Manager PRSR PRS Result PRSU Post Release Software Update PRSU Post-Release Software Unit PRT Payphone Recognition Tone PRT PRinT PRT Print File PRT Printer PRT Problem Resolution Team PRTCL Protocol PRTM Printing Response Time Monitor PRTNM Pretranslator Name PRTSC PRinT Screen (key) PRU Primary Recording Unit PRV Pre-Release Verification PRV Privacy PRVPUB Private to Public PRW Paired Wire PRZ Polarized Return-to-Zero Ps location Probability PS Packet Service PS Packet Size PS Packet Switch PS Packet Switching PS Packet-Switched PS Paging System PS Paging Systems (former ETSI TC) ps Parameter Separator PS Party Set PS Passed Screening PS Path Selection PS Pay Station PS Pen Style PS Permanent Signal PS Personal (radio) Station PS Phase Shift PS Physical Shelf ps picosecond PS PostScript PS Power Sink PS Power Source PS Power Splitter PS Power Supply PS Presentation Services PS Probability of Success PS Processor Sharing PS Processor Status PS Product Specification PS Program Store PS Program Stream PS Protection Switching PS P-Side Ps Public switched telephone network Ps sending Power level PS/2 Personal System/2 PS1 Power Source 1 PS1 Power Status Bit 1 PS1 Power Supply 1 PS2 Power Source 2 PS2 Power Status Bit 2 PS2 Power Supply 2 PS3 Power Source 3 PS3 Power Supply 3 PSA Partial Stand-Alone PSA Path Selection Algorithm PSA Power Serving Area PSA Processor Save Area PSA Product Service Assurance PSA Product Specification Agreement PSA Programmable Services Architecture PSA Protocol-Specific Annex PSA Provisioned Service Actions PSA Proxy Signaling Agent PSA Python Software Activity P-SAE PSE Service Alteration Element PSAP Physical Service Access Point PSAP Presentation Service Access Point PSAP Public Safety Answering Point PSAR Programmable Starting Address Register PSC PCS Switching Center PSC Permanent Signaling Connection PSC Persistent Signaling Channel PSC Personal SuperComputer PSC Physical Signaling Channel PSC Picture Start Code PSC Preset Conference PSC Programming Support Centre PSC Protection Switching Controller PSC Protection Switching Count PSC Public Service Commission PSCAB Packet Services Compatibility Advisory Board (BOC) PSCAB Packet Services Compatibility Users Group PSCCP Packet Signaling Connection Control Part PSCS Personal Space Communication Service PSD Passive Service Directory PSD Permanent Signal Detection PSD Platform Schedule Dependency PSD Platform-Specific Driver PSD Power Spectral Density PSD Programmable Sharing Device PSD Protection Switching Duration PSDC Public Switched Digital Capability PSDDS Pilot Switched Digital Data Service PSDDS Public Switched Digital Data Service PSDI PIN Service Denial Indicator PSDI PIN Service Denial Indicator Identifier PSDN Packet Switched Data Network PSDN Packet Switched Digital Network PSDN Public Switched Data Network PSDN Public Switched Digital Network PSDR Periodic State Dependent Routing PSDS Packet Switched Data Service PSDS Public Switched Data Service PSDS Public Switched Digital Service PSDTS Packet Switched Data Transmission Service PSDU Presenation Service Data Unit (OSI-PL) PSE Packet Switching Exchange PSE Passive Service Element PSE Personal Security Environment PSE Protection Switch Exercise PSE Proxy Search Engine PSE Published Software Environment PSET Proprietary Business Set Pset Proprietary Set PSETF Preemptive Shortest Executive Time First PSF Point Spread Function (Imaging) PSF Power Separating Filter PSF Print Services Facility PSF Product Specification File PSG Professional Services Group PSH Property Sheet Header PSH Push flag PSI Performance Systems International PSI Personal Subscription Identity PSI Pitch Synchronous Innovation psi Pounds Per Square Inch PSI Precision Systems Inc. PSI Product Support Information PSI Product/Service Information PSI Program-Specific Information PSI Protection Switch Inhibited PSI-CELP Pitch Synchronous Innovation-CELP PSID Private System Identifier PSIDE Peripheral Side P-SIDE Peripheral Side PSIG Permanent Signal PSK Phase-Shift Keying PSKMP Photuris Session Key Management Protocol PSL Peripheral Speech Link PSL Phantom Service Link PSL PM-to-SLC PSL Power Sum Loss PSL Program Skeleton Language PSL Protocol Specification Language PSLK Peripheral Side Link PSLT Periodic Signaling Link Tests PSM Persistent Stored Modules PSM Position Switching Module PSM Property Sheet Message PSM Protocol State Machine PSM Provision of Stored Messages PSM Pulse Step Modulation PSMS PCS Service Management System PSN Packet Switched Network PSN Packet Switched Node pSN Packet Switching Network PSN Packet Switching Node PSN Portable equipment Serial Number PSN Power Switching Network PSN Private Subscriber Network PSN Programmable Services Node PSN Property Sheet Notification PSN Public Switched Network P-SNE PSE Service Notification Element PSNR Peak Signal-to-Noise Ratio PSO Partial Store Ordering PSO Professional Services Organization (Hewlett-Packard) PSOF Pending Service Order File PSOLA Pitch Synchronous OverLap and Add PSOP Plastic Small Outline Package pSOS Integrated Systems Inc. pSOSystem PSP Packet Subscriber Profile PSP Parameter Stack Pointer PSP Payphone Service Provider PSP PCS Service Provider PSP Personal Software Products PSP Physical Service Port PSP Position-Synchronized Pulse Generator PSP PPSN Subscriber Profile PSP Product System Packaging PSP Program Segment Prefix PSP Programmable Signal Processor PSPD Permanent Signal/Partial Dial PSPDN Packet Switched Public Data Network PSPDN Public Switched Packet Data Network PSPROT Protected Program Store PSPTF Preemptive Shortest Processing Time First PSQX75 Packet Sequencing for X.75 PSR Passive Service Reference PSR Powersoft Report File PSR Previous Slot Received (BISDN) PSR Priority Sharing with Restrictions PSR Processor Status Register PSRG Parallel Shift Register Generator PSRR Power Supply Rejection Ratio PSS Packet Switched Stream (X.25) PSS Packet Switching System PSS Performance Support System PSS Product and System Specifications PSS Product Support Services PSS Public Safety Systems PSS Pulse Signalling System PSS1 Private Signalling System number one PSSP Parallel System Support Programs PST MDII: Permanent Signal Timeout PST Pacific Standard Time PST Permanent Signal Tone PST Perprocess Segment Table PST Pre-Structured Technology PST Primary State PST Protocol State Table PSTC Public Switched Telephone Circuits PSTN Public Switched Telephone Network PSTO Permanent Signal Timeout PSTQ Primary State Qualifier PSTS Parallel Serial Time Switch PSTS Profile Specific Test Specification PSTV Protocol Specification, Testing and Verification PSU Packet Switch Unit PSU Packet Switching Unit PSU Power Supply Unit PSU Product/Service Update PSUP Per Session User Profile PSVC Point-to-Point Signaling Virtual Channel PSVCI Point-to-Point Signaling Virtual Channel Identifier PSW Peripheral Software PSW Processor Status Word PSW Program Status Word PSWR Power Standing Wave Ratio PT ISO country code for Portugese Republic (Portugal) PT Packet Trunk PT Paging Terminal PT Paper Tape PT Parallel Transmission PT Part Time PT Passthru PT Pay Tone PT Payload Type PT Performance Technologies PT Performance Telecom PT Personal Telecommunications (service) PT Physical Tuple pt Point PT Portable Radio Termination PT Precise Tone PT Private Trunking PT Product Test PT Product Testing PT Program Test PT Project Team PT Protocol Tester PT Pulse Transformer PTA Posts and Telecommunications Administration PTA Previous Transfer Address PTA Product Test Acceptance PTA Product Test Accepted PTA Provincial Telecommunications Administration PTAB Planning Table PTAC Postal and Telecommunications Appliances Corporation PTAE Pass Through Application Entity PTAG PCS Technology Advocacy Group PTAT Private Transatlantic Telephone PTB Physikalisch-Technische Bundesamstalt (D) PTBA Page Table Base Address PTC Pacific Telecommunications Council PTC Parallel Test Component PTC Parametric Technology Corp. PTC Permanent Technical Committee PTC Positive-Temperature-Coefficient (resistor) PTC Product Test Certification PTC Product Test Complete PTCH Packet Traffic Channel PTCO Project Team Co-Ordinator assistant (ETSI) PTD Personal Training Day PTD Product Test Developed PTE Packet Transport Equipment PTE Page Table Entry PTE Partitioned Table Editor PTE Path Terminating Equipment PTE Product Test Exit PTE Protocol Testing Environment P-Team Prototyping Team PTEG Page Table Entry Group PTF Permanent Text File PTF Print Time Formatting PTF Problem Trouble Fix PTF Product Test Finish PTF Programmable Transversal Filter PTFE Poly-Tetra-Fluoro-Ethylene (Cable Insulator) PTG Precise Tone Generator PTGT Privilege Ticket Granting Ticket PTI Packet Type Identifier PTI Payload Type Identifier PTI Payload Type Indicator PTI Performance Technologies Inc. PTI Personal Telecommunication Identity PTL Physical Transport Layer (SNA) PTL Push To Listen button PTLU Pre--Up PTLXAU Public Telex Access Unit PTM Packaged Trunk Module PTM Packet Transfer Mode PTM Packet Transport Mode PTM Point-To-Multipoint PTM Portable Traffic Monitor PTM Programmable Timer Module PTM Project Team Manager (ETSI) PTM Pulse Time Modulation PTM-G Point-To-Multipoint Group Call PTM-M Point-To-Multipoint Multicast PTMPT Point To Multipoint Pt-Mpt Point-to-Multipoint PTM-SC PTM Service Center PTMT Project Team Management Team (ETSI) PTN Personal Telecommunication Number PTN Personal Telephone Number PTN Plant Test Number PTN Private Telecommunications Network PTN Public Telephone Network PTNX Private Telecommunications Network Exchange PTO Public Telecommunications Operator PTP Paper Tape Punch PTP Peak To Peak PTP Point-To-Point PTP Precise Tone Plan PTP Private Topology Partition PTP Product Test Plan PTP Product Test Process Pt-Pt Point-to-Point PTQ Per-Terminal Queue PTR Paper Tape Reader PTR Philips Telecommunication Review (periodical) PTR Pointer PTR Poor Transmission PTR Printer PTR Professional Technical Reference PTRST Port Restore PTS Paper Tape System PTS Pay Terminals and Systems PTS Personal Telecommunications Service PTS Per-Trunk Signaling PTS Portable Test Set PTS Precise Tone Supply PTS Presentation Time Stamp PTS Probabalistic Transition System PTS Proceed To Select PTS Proceeed to Send PTS Product Test Start PTS Product Test Strategy PTS Product Tracking System PTS Profile Test Specification PTS Protocol Test System PTS Public Telecommunications Service PTS Public Telephone Service PTS Public Telephone System PTSCS PTS Compliance Statement PTSE PNNI Topology State Element PTSE PNNI Topology Status Element PTSP PNNI Topology State Packet PTS-S Profile Test Specification Summary PTST Product Test PTST Product Test Strategy Team PTT Plesiochronous Trail Terminations PTT Postal, Telegraph, and Telephone PTT Postes, Télégraphes et Téléphones PTT Posts, Telecommunications et Telediffusion PTT Posts, Telegraphs and PTT Posts, Telegraphs and Telephones public operating company PTT Push to Talk PTT Push To Talk button PTTC Paper Tape and Transmission Code PTTI Precise Time and Time Interval PT-VSI Performance Technologies VMEbus Slave Interface P-TWC PCS Three Way Calling PTX Performance Toolbox PTY Party Line PTY Party Line Ringing Code/Member Identifier pty Pseudoterminal PU Physical Unit PU Plug-Up PU Presentation Unit PU Programme Unit PU Protocol Unit PU1 Private Use 1 PU2 Private Use 2 PUB Public PUB Publication PUB Technical Publication PUBNET Public Network PUBPRV Public to Private PUC Path User Channel PUC Public Utilities Commission PUC Public Utility Commission PUC PUnch Control PUCI PIN Usage Category Indicator PUCP Physical Unit Control Point (SNA) PUCT Price per Unit Currency Table PUF PRISM User Forum PUGI Primary User Group Identity PUH Physical Unit Handler PUI Personal User Identity PUK Personal Unblocking Key PUK PIN Unblocking Key PUM Personal User Mobility PUM Positioning Unit Mode PUMA Product Upgrade Manager PUN Physical Unit Number PUN Portable User Number PUNA Public Network Access Billing Records PUP PARC Universal Packet PUP PARC Universal Packet Protocol PUP Physical User Port PUPS Point-of-Use Power Supply PUT Parallel Upper Tester PUT Portable User Type PUT Programmable Unjunction Transistor PV Parameter Value PV Parameter Variation PV Physical Volume PV Private Number PV Procedure Variable (Procvar) PV Product Validation PV Product Verification PV Protocol Version PVA Photo Voltaic AC-Relay PVAL PRSM Validation PVBR Peak-Allocated VBR PVC Permanent Virtual Call PVC Permanent Virtual Channel PVC Permanent Virtual Circuit PVC Permanent Virtual Connection PVC Poly-Vinyle Cloride PVC Protocol Variant Control PVC Protocol Version Control PVCC Permanent Virtual Channel Connection PVCI Permanent Virtual Channel Identifier PVCRI Permanent Virtual Circuit Recording Interval PVCS Intersolv software configuration management product PVD Physical Vapor Deposition PVD Point of Video Delivery PVDF piezoelectric PolyVinyliDene Fluoride (Acoustic Sensors) PVDF PolyVinyliDene Fluorethylene (pyrosensor, IR-absorber) PVDN Private Virtual Data Network PVE Product Validation End PVE Protocol Version Error PVG Passport Voice Gateway PVM Parallel Virtual Machine PVM Passport Voice Manager PVM Passthrough Virtual Machine (protocol) PVM Position/Velocity-sense Module PVN Private Virtual Network PVN Private Virtual Networking PVP Packet Video Protocol PVP Permanent Virtual Path PVP Programmable Video Processor PVPBACC Private-to-Public Access Code PVPC Permanent Virtual Path Connection PVQ Pyramid Vector Quantization PVR Processor Version Register PVRA Physical Volume Reserved Area PVS PowerPC Visual Simulator PVS Product Validation Start PVT Page View Terminal PVT Private PVTFAC Private Facilities Access PVTNET Private Network Access Code PW ISO country code for Palau PW Password PWB Printed Wiring Board PWB Programmer's Workbench PWBA Printed Wiring Board Assembly PWD Password PWF Preference Weighting Factor PWFG Primary Waveform Generator PWI Physical Work Item PWI PoWer Indication PWI Public Windows Interface PWL Password List PWL Password List file PWM Pulse-Width Modulated PWM Pulse-Width Modulation PWP Physical Work Processor PWP Primary-Writer Protocol PWPD Process With Private Data PWR Power PWS Peer Web Services PWT Page-Level Writes Transparent PWT Page-Level Write-Through pWT Personal Wireless Telecommunication PWT Personal Wireless Telecommunications PWT Personal Wireless Telephony PWT-E Personal Wireless Telecommunications-Enhanced PX Prefix Code PX Private Exchange PX Pulse transformer PX peak power (watts, dB) PXE Preboot Execution PXL Product XPM Lineup PXLA Pretranslation PXML Private Exchange Master List PXO Packaged crystal Oscillator PY ISO country code for Republic of Paraguay PY Person-Year PY mean power (watts, dB) PZ carrier power (watts, dB) PZT Pb(lead)-Zirconate-Titanate (RAM) (Ferroelectronic RAM) back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P - Q - R|S|T|U|V|W|X|Y|Z Q Q reference point Q Quadrature Q Quarter Q Quotation (HTML tag) Q Selectivity Q Transistor Q&A Questions and Answers Q&R Quality and Reliability QA ISO country code for State of Qatar QA Q (Interface)- Adapter QA Q-Adapter QA Q-Interface Adapter QA Quality Acceptance QA Quality Assurance QA Queue-Arbitrated QA Queued Arbitrated QA Quick Acting QAC Quality Assurance Cycle QAD Quality Assurance Directorate QADM Quadrature Audio/Data Modulation QAF Q Adaptor Functional block QAF Q-Adapter Function QAF Quality Audit Facility QAM Quadrature Amplitude Modulation QAM-SC Quadrature Amplitude Modulated- Suppressed Carrier QAN Q3 Interface on the Access Network QAR Quality Assurance Review QASK Quadrature Amplitude Shift Keying QBB Query Bb Channels QBE Quality Basic Education QBE Query By Example QBERT Query Bit Error Rate Testers QBIC Query By Image Content Q-bit Qualifier bit QBS Query Busy Station QC Qualcomm QC Quality Circle QC Quality Control QC Quantum Cascade QC Quantum Coprocessor QC Quartz Crystal QC Queue Controller QC Queued Channel QCC Quality Control Circle QCDMA Qualcomm CDMA QCIF Quarter CIF QCIF Quarter Common Image Format QCIF Quarter Common Intermediate Format QCK Quick Conference Key QCM Query Call Memory QCOUNTS Query Counts QCP Queue Control Program QCP Quick Connect Panel QCPUGNO Query CPU Group Numbers QCS Quadruple Current Switch QCT Quantitative Computerised Tomography (Medical) QCUST Query Customer Information QD Quad Density QD Queuing Delay QDC Quadrature Decoder Chip QDCH Query D-Channel Handler QDI Quality Document, Process, and Impact Report Information QDN Query Directory Number QDNA Query Directory Number Address QDNSU Query Software Unassigned Directory Numbers QDNU Query Directory Numbers Software Unassigned QDNWRK Query Working Directory Number QDPSK Quaternary Differential Phase Shift Keying QDRS Quantum Data and Routing System QDSX Quadruple DSX QDU Quantization Distortion Unit QDU Quantizing Distortion Unit QE QMS Element QEF Quasi-Error-Free QELIB Q+E Database Library 2 QEPC Quadruple Exchange Power Controller (ISDN) QFA Quick File Access QFADS QMS Force Administration Data System QFC Quantum Flow Control QFD Quality Function Deployment QFL Queue FiLe QFLIC Quad Fiber Link Interface Chip QFLIC Quad Fiber Link Interface Controller QFM Quantized Frequency Modulation QFP Quad Flap Pack QFP Quad Flat Package (Square IC Package) QFSK Quadrature Frequency Shift Keying QGP Quad Gateway Processor QGRP Query Group QH Query Handler QHA Query Hardware Assigned LEN QHASU Query Hardware Assigned Software Unassigned LEN QHU Query Hardware Unassigned LEN QI Quality Improvement QI Quality Indicator QIC Quality Improvement Council QIC Quality Information Center QIC Quarter Inch Compatibility QIC Quarter-Inch Cartridge QIC Quarter-Inch Cassette QID Queue Identifier QIF Quicken Import File QIL Quadruple-In-Line (IC Package) QIT Quality Improvement Team QIT Query ISDN Terminal QKD Quantum Key Distribution QKS Quasar Knowledge Systems QL Queue Length QLAMP1 Queue Call-Waiting Lamp 1 QLAMP2 Queue Call-Waiting Lamp 2 QLAMP3 Queue Call-Waiting Lamp 3 QLC Quad Line Card QLC Quad Link Controller QLE Q3 Interface on the Local Exchange QLEN Query Line Equipment Number QLENWRK Query Working LEN QLI Quad Link Interface QLI Query Language Interpreter QLLC Qualified LLC (SNA) QLLC Qualified Logical Link Control QLOAD Query Load QLOOP Query ISDN Loop QLPS Quad Link Packet Switch QLT Query Logical Terminal QM Quality Manager (ETSI) QM Quality Manual QM QuickMail QM Quiet Mode QMADN Query Multiple Appearance Directory Number QMAMSK Quadrature Multi-Amplitude Minimum Shift Keying QMF Quadrature Mirror Filter QMF Query Management Facility (IBM) QMI Quality Management Institute QMIP QualComm Managewment Information Protocol QMP Quality Measurement Plan QMS Quality Management System QMS Queue Management System QMS CAM Queue Management System Call and Agent Manager QMS CASE Queue Management System Customer Assistance Service Enhancements QMS LC Quality Management System Local Co-ordinator (ETSI) QMSCASE Queue Management System Customer Assistance Service Enhancements QMSK Quadrature Minimum Shift Keying QMTI Quadrature Moving Target Indicator (radar) QNaN Quiet Not-a-Number QNCOS Query Network Class of Service QNVW Queensview QO Query Originator QoR Query on Release QOS Quality of Service QoS Quality of Service QOSMIC QOS Verification Methodology and Tools for Integrated Communicatio ns QOSP Quality of Service Parameter QP Quadratic Program QP Query Processor QPA Quality Program Analysis QPC Quad Port Card QPDM Quadruple Pixel-Dataflow Manager (AMD Inc.) QPH QLPS Protocol Handler QPHF Query Packet Handler Facility QPL Qualified Products Listing (US-Military) QPL Queueing Priority Level QPM Quad-Port Module QPM Quantized Pulse Modulation QPR Quadrature Partial Response QPRIO Query PRIO QPRS Quadrature Partial-Response System QPS Quality Program Specification QPS Queries Per Second QPSK Quadrature (Quaternary) Phase Shift Keying (4-PSK) QPSX Queued Packet and Synchronous Circuit Exchange QPSX Queued Packet Synchoronous Exchange QPUG Quality Process Users Group QR Quality Record QR Quasi-Random QRA Quality Reliability and Assurance QRP QOS Reference Point QRS Quasi-Random Signal QRSF Quasi-Random Signal, Framed QRSS Quasi-Random Signal Source QRSU Quasi-Random Signal, Unframed QRY Query QS Queue Size QSA Quality System Analysis QSA Quality System Assurance QSAFA Quasi-Static Autonomous QSAM Quadrature Sideband Amplitude Modulation QSAM Queued Sequential Access Method QSCONN Query Special Connections QSCUGNO Query SCU Group Numbers QSD Quality System Document QSDA Quality System Documentation Assistant (ETSI) QSE Quality Software Engineering QSIG Q Interface Signaling QSIG Q Interface SignallinG protocol (ECMA standard) QSIG-GF Q Interface Signaling-Generic Functions QSL Queue Status Lamp QSM Query Set Manager QSPI Quality System Process Improvement QSS Quality Systems and Software Ltd. QSTN Question QT Quality Technology QT Queuing Time QTADS QMS Traffic Administration Data System QTAM Queued Telecommunications Access Method QTD Query Time and Date QTFW QuickTime for Windows QTM QuickTime QTOPSPOS Query Table TOPSPOS QUAD Typographic Quadding QUAM Quantized Amplitude Modulation quat Quaternary Symbol QUE Call Queuing QUE Queuing QUEST Quality, Engineering, Software, and Technology QUICC Quad Integrated Communications Controller QUIL QUad-In-Line (Package) QUIP Quad In-Line Package QUNI Query Useful Node Information QVC Quality, Value and Convenience QW Quad Word QW Quadword QW Quantum Well QWA Quarter Wave Antenna QW-DFB Quantum Well Distributed Feedback QWL Quantum Well Laser QWP Query With Permission QWUCR Query Wake-Up Call Requests back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q - R - S|T|U|V|W|X|Y|Z R Ramp time R Rapporteurs Meeting (ETSI) R Read R Ready R Receive (circuit) R Received R Recommendation R Red R Referenced R Register R Release R Reliability R Replied R Request R Requirement R Reservation R Resistance R Resistor R Resource R Response R Revision of existing document R Ring r Roman R Round R Router R&D Research and Development R&E Research and Education R&I Review and Inspection R&M Reliability and Maintenance R&O Report and Order R&Q Reliability and Quality R&Q Routing and Queuing R&R Request and Reply R&R Reward and Recognition R/DAT Rotary Digital Audio Tape R/M Register/Memory R/N Request/Notification R/O Read-Only R/O Responsible Organization R/T Receive/Transmit R/T Register Translator R/W Read/Write R2 Binary Raster Operation R2 signalling system R2 R4 Release 4 R5 Release 5 R50 Rad-50 R6 Release 6 RA Radio Altimeter RA Radio Astronomy RA Radio Resource Allocator RA Radiocommunication Assembly (ITU) RA Radiocommunications Agency (UK) RA Random Access RA RAndom mode request information field RA Rate Adapter RA Rate Adaption RA Recognition Agreement RA Recognition Arrangement RA Registered Area (TETRA) RA Registration Area RA Remote Access RA Request Access RA Request/Acknowledge RA Requirements Analysis RA Requirements Analyzed RA Resource Agent RA Resource Aggregate RA Resynchronize Acknowledgement RA Return Alarm RA Risk Analysis RA Roaming Area RA Routing Address RA Routing Arbiter RA Routing Area RA Rural Area RA1 Reanswer No. 1 signal RA2 Reanswer No. 2 signal RA3 Reanswer No. 3 signal RAB RAID Advisory Board RAB Random Access Burst RAB Registrar Accreditation Board RAC Remote Access Concentrator RAC Resources Available Confirm RAC Root Access Conditions RAC Routing Access Code RAC Routing and Access Controller RACE R&D in Advanced Communications technologies in Europe RACE Random Access Computer Equipment RACE Rapid Automated Connections Environment RACE Regional Automatic Circuit Exchange RACE Research and Development in Advanced Communication Technologies in Europe RACE Research in Advanced Communication in Europe RACE Research in Advanced Communications in Europe RACE Research into Advanced Communications in Europe RACE Research on Advanced Communication Systems in Europe RACF Radio Access Control Function RACF Remote Access to Call Forwarding RACF Remote Activation Call Forwarding RACF Resource Access Control Facility (IBM) RACFCD Remote Access Call Forwarding Code RACH Random Access Channel RACON RAdar beaCON RACOS Raised Cosine RACS Remote Access Computing System RACS Road/Automobile Communication System rad Radians RAD Rapid Access Disk RAD Rapid Application Development RAD Redirection-Address Display RAD Remote Access Device RAD Remote Antenna Driver RADAR Radio Detection And Ranging RADIUS Remote Authentication Dial-In User Service RadJa Rapid Application Development with Java RADR Receiver Attachment Delay Recorder RADSL Rate Adaptive Digital Subscriber Line RADSL Rate Adaptive Digital Subscriber Loop RAE Real-Time Analysis Engine RAF Rainbow Action Forum RAF Recorded Announcement Frame RAF Risk Assessment Form RAG Radiocommunications Advisory Group RAG Ring Again RAI Remote Alarm Indication RAI Resource Availability Index RAI Resources Available Indicate RAID Redundant Array of Inexpensive Disks RAINBOW Radio Independent Broadband on Wireless RAINV Resource Aggregate Inventory Table RAL Radio Access Layer RAL Raleigh RAL Resource Aggregate Locator RAL Resource Allocation RALA Registered Automatic Line Adapter RALU Register and Arithmetic and Logic Unit RAM Random Access Memory RAM Random-Access Machine RAM Remote Access Management RAM Reset Acknowledgement Message RAMA Resource Auction Multiple Access RAMAC Random Access Method of Accounting and Control RAMDAC RAM-based Digital to Analog Converter RAMDAC Random Access Memory with Digital to Analogue Converter RAMP RAM Alternate Messaging Protocol RAMP Reliable Adaptive Multicast Protocol RAMP Remote Access Maintenance Position RAMP Remote Access Maintenance Protocol RAMSH Reliability, Availability, Maintainability, Safety and Human Facto rs RAN Re-Answer message RAN Recorded Announcement RAN Regional Area Network RAN Remote Access Node RAN Residential Access Network RAN Room Area Network RAND Random Number RAND Random Number used in generating CKEY RANN Recorded Announcement RANTH Recorded Announcement Threshold RAO Raleigh-Area Operations RAO Record Digits as Outpulsed RAO Regional Accounting Office RAO Revenue Accounting Office RAP Radio Access Port RAP Rapid Application Prototyping RAP Recorded Announcement Processor RAP Recording-Announcement Processor RAP Reliability Assessment Plan RAP Route Access Protocol RAQ Recently Asked Questions RAR Rearrangement RAR Request for ACT Relationship RAR Resource Access Restriction RAR Return Address Register RARC Regional Administrative Radio Conference RARE Réseaux Associés pour le Recherche Européenne RARF Radio Administration, Regulation and Frequency management RARP Reverse Address Resolution Protocol RARP Reverse Address Resolution Protocol (TCP/IP-DoD) RAS Radio Access System RAS Radio Astronomy Service RAS Random-Access Storage RaS Range and Status RAS Registration, Admission, and Status RAS Reliablity, Availability, Serviceability RAS Remote Access Server RAS Remote Access Service(s) RAS Row Address Select RAS Row Address Strobe RASC Radio Access Service Controller RASC Radio Access System Controller RASCI Responsibility, Approval, Support, Consult and Inform RASCOM Regional African Satellite Communications Organization RASL Robust Application and Session Layer RASM Remote Abstract Service Module RASP RSC Alarm & Status Panel RASR Reliability, Availability, Serviceability, Recoverability RAST Receive and Send Terminal RAT Register Alias Table RAT Reliability Assessment Testing RAT Remote Access Telnet RAT Resource and Transport RAT Resource(s) Architecture Team RATP Reliable Asynchronous Transfer Protocol RATS Rainbow Action Tracking System RATT R1022 ATM Technology Testhead RAU Recorded Announcement Unit RAU Remote Access Unit RAU Reserved for Administrative Use RAV Remote Access Vehicle RAVE Remote Access to VCO Environment RAVE Rendering Acceleration Virtual Engine RAW Read After Writing RAX Rate Area Exception RAX Remote Access RB Redbook RB Reference Bit RB Return to Bias (recording) RB Reverse Battery RB Ringback RB Robustness RB Rollback RBA Relative Byte Address RBA Reset-Band-Acknowledgement message RBB Residential Broadband RBC Radio Bearer Control RBC Relay Bearer Control RBC Remote Bearer Channel RBCF Radio Bearer Control Function RBD Receiver Buffer Descriptor RBDS Radio Broadcasting Data System RBER Residual Bit Error Rate RBER Residual Bit Error Ratio RBF Random Block File (Manager) RBHC Regional Bell Holding Company RBI Reset-Band-Acknowledgement, All Circuits Idle signal RBID Reference Burst IDentification RBK Ring Back RBLO Remotely Blocked RbnNoR Redirection Number Restriction RBOC Regional Bell Operating Company RBP Reliable Broadcast Protocol RBP Ring Back Price RBQ Ring-Back Queuing RBR Real-time Bit Rate RBS Radio Base Station RBS Robbed-Bit Signaling R-BS Ranger Wireless Base Station RBSOA Reverse-Biased Save Operating Area (Power Semiconductors) RBT Remote Batch Terminal RBT Ringback Tone RBU Receive Baseband Unit RBV Return Beam Vidicon RBW Resolution Bandwidth RC Radio Controller RC Rate Center RC Read-Create RC Receive Common RC Recent Change RC Reception Control RC Recognition Context RC Recording Completing RC Reference Clock RC Reference Configuration RC Regional Center RC Remote Control RC Repeating Coil RC Reply Check RC Request Counter RC Requirements Captured RC Reservation Centre RC Resistance-Capacitance RC Resistor-Capacitor RC Resource Compiler RC Resource Control RC Resource Definition file RC Resource Script File RC Retransmission Counter RC Retry Counter RC Return Code RC Reverse Charging RC Revertive Call RC Ring Control RC Ringing Code RC Ringing Current RC Root Cause RC Routing Code RC Routing Controller rc Run Commands RC Runtime Customization RC&V Recent Change and Verify RC/V Recent Change and Verify RC/VP Recent Change/Verify Position RC2 Rivest Cipher #2 RC4 Rivest Cipher #4 RCA Radio Corporation of America RCA Receiver Collision Avoidance RCA Remote Controller Array RCA Reverse Charging Acceptance RCA Root Cause Analysis RCAA Root Cause Alarm Analysis RCAMA Remote Centralized Automatic Message Accounting RCAN Recorded Announcement RCAS Rapport Carrier Access Switch RCAT Release Coordination and Tracking RCAT Signaling-Route-Set-Congestion-Test Control RCB Reverse Channel Bank RCB Reverse Charging Barred RCB Ringing Control Block RCC Radio Common Carrier RCC Remote Cluster Controller RCC Remote Communication Controller RCC Requirements Change Control RCC Resource Capacity Coefficient RCC2 Remote Cluster Controller 2 RCCB Residual-Current Circuit Breaker RCCI ISDN Remote Cluster Controller RCCN Radio Common Carrier Number RCCO Offshore Remote Cluster Controller RCCR Receive Control Character Register RCCT Regression Code Coverage Tool RCD Rapid Cycle Development RCD Receiver-Carrier Detector RCD Reference Configuration Development RCD Residual Current Device RCD Resistor-Capacitor-Diode (protection circuit) RCD Reverse Coin Disposal RCD Route Control Digit RCDMA Rockwell CDMA RCE Radio Control Equipment RCE Remote Control Equipment RCE Remote Controller Equipment RCEE Resource Control Execution Environment RCEI ISDN Remote Controller Equipment RCER Remote Call Event Record RCES Remote Controlled Equaliser System RCF Radio Control Function RCF Registration Confirm RCF Registration Confirmation RCF Remote Call Forward RCF Remote Call Forwarding RCFEA Remote Call Forwarding Equal Access RCFLM Remote Call Forwarding Limit RCFN Remote Call Forwarding Number RCFW Remote Call Forwarding RCGA Remote Carrier Group Alarm RCGLI Request Calling Line Identity RCH Redundancy Check RCH Restoration Capacity Heuristic RCH Richardson RCHD Residential Call Hold RCHNL Remote Channel RCI Release Control Identifier RCI Remote Command Interpreter RCI Reverse Charging Indication RCI Root Cause Identification RCI Routing Control Indicator RCID Radio Call ID RCL Recall RCLI Remote Command Line Interface RCM Reject Connect Modify Message RCM Release Control Manager RCM Resource Configuration Manager RCMAC Recent Change Memory Administration Center RCME Remote Control and Maintenance Equipment RCMI Remote Cell-site Multiplex Interface RCMP Routing Control/Monitoring Policing RCO Receiver Cuts Out RCO Remote Central Office RCO Resource Control Object RCO2 Off-Shore RCC2 RCO2 Overseas RCC2 RCOS Routing Class of Service RCP Radio Control Point RCP Rainbow Computing Platform RCP Real-time Compute Platform RCP Regional Control Point RCP Restoration Control Point RCP Restore Cursor Position RCP Return to Control for partial Page RCP Right-hand Circular Polarization RCP Route Control Point RCP Route Set Test Cluster Prohibited message RCP Signaling-Route-Set-Test Cluster-Prohibited signal RCR Radio Center for Research RCR Radio Communications Report RCR Research and Development Center for Radio Systems RCR Role-Collaborator-Responsibility RCR Route Set Test Cluster Restricted message RCR Signaling-Route-Set-Test Cluster-Restricted signal R-C-R Role-Collaborator-Responsibility RCS Reaction Control Subsystem RCS Recall Services RCS Relay Control System RCS Remote Carrier SLC-96 RCS Remote CAT Scan RCS Remote Concentrator SLC-96 RCS Remote Concentrator Subscriber RCS Remote Connection Service RCS Remote Control Switching RCS Reserved Channel Scheme RCS Revision Control System RCSA Radio Carrier Serving Area RCSC Regional Customer Support Center RCSDRV Relay Control System Driver RCSENT Reverse Charging Sent RCT Remote Carrier Terminal RCT Remote Concentrator Terminal RCT Remote Control Terminal RCT Resonant Charge Transfer (Power Supplies) RCT Resource Cancellation Time RCT Resource Template file RCT Route Set Congestion Test message RCT Signaling-Route-Set-Congestion-Test signal RCTL Resistor-Capacitor-Transistor Logic RCTM Rate Conversion Traffic Monitor RCU Rack Controller Unit RCU Radio Channel Unit RCU Radio Control Unit RCU Remote Carrier Urban RCU Remote Concentrator Unit RCU Remote Concentrator, Urban RCU Remote Control Unit RCV Receive RCV Recent Change and Verify RCV Resistance/Capacitance/Voltage RCVD Received Digits Billing RCVR Receiver RCVRDGT Receiver-Digitone RCVS Recent Change and Verification Subsystem RCW Read/Compute/Write RCX Remote CI Command Execution RD Receive Data RD Received Data RD Recursive Design RD Reference Document RD Remote Diagnosis RD Request Disconnect RD Request for Disconnect (HDLC) RD Resistance Design RD Ring Detect RD Ringdown RD Root Directory RD Route Descriptor RD Routing Domain RDA Remote Data Access RDA Remote Database Access (protocol) RDACW RDAS Distinctive Alerting/Call Waiting RDAS Residence Distinctive Alerting Service RDAS Residential Distinctive Alerting Service RDAT Receive Data RDB Relational Database RDBL Relational DataBase Language RDBMS Relational Database Management System RDC Redirect Confirm RDC Remote Data Concentrator RDC Remote Device Controller RDC Routing Determination Check RDC Routing Domain Confederation(s) RDCLP Response Document Capability List Positive RDD Replace Dialed Digits RDD Replaceable Database Driver RDD Responsibility Driven Design RDE Redirect Expiry RDEP Response Document End Positive RDER Resource Data Entry Rules RDF Radio Direction Finder RDF Rate Decrease Factor RDF Redirect Flush RDFF RDF (Rate Decrease Factor) Factor RDG Reset Dialing RdgNo Redirecting Number RDI Remote Defect Indication RDI Remote Defect Indicator RDI Restricted Digital Information RDI Route Digit Indicator RDLD Red Lined RDLI Remote Digital Line Interface RDLM Remote Digital Line Module RDM Raw Data Mode RDM Reliably Delivered Message RDN Redirection Number RDN Relative Distinguishing Name RDN Remote Directory Number RdnAR Redirection Number Restriction RDND Roamer Do Not Disturb Rdni Redirection Information RdnNo Redirection Number RDO Relational Database Operator RDO Result Data Object RDOC Remote Dynamic Overload Control RDP Reliable Data Protocol RDP Reliable Datagram Protocol RDP Route Discovery Protocol RDQ Redirect Query RDR ReaDeR RDR Redirect Request RDR Redirection Reason RDR Regional Dynamic Routing RDR Remote Dump and Restore RDRAM Rambus DRAM RDS Radio Data System RDS Radio Diagnostic Software RDS Remote Data Services (IBM) rDS Remote Digital Section RDS Remote Download Site RDS Running Digital Sum RDSC Rainbow Distributed Software Communications RDSS Radiodetermination Satellite Service RDT Radio Deployment Tool RDT Rearm Dead-Time (Digital Storage Scopes) RDT Recall Dial Tone RDT Remote Digital Terminal RDTD Restricted Differential Time Delay RDTL Recall Dial Tone Launcher RDTM Recall Dial Tone Manager RDTP Recall Dial Tone Proxy RDU Remote Display Unit RDW Record Descriptor Word RDY Ready RE ISO country code for Reunion RE picture Response Equipment (Video Terminal) RE Radio Exchange RE Receiving Entity RE Record End RE Recovery-Enabled RE Reference Equivalent RE Regular Expression RE Remote Electronic(s) RE Requirements Engineer RE Requirements Estimated RE Research or Education RE Reset Event RE Return Error RE364 Restrict 64 Kbps Calls from Trunk Group Type 3 RE3H11 Restrict 1536 Kbps Calls from Trunk Group Type 3 RE464 Restrict 64 Kbps Calls from Trunk Group Type 4 RE4H10 Restrict 1472 Kbps Calls from Trunk Group Type 4 RE4H11 Restrict 1536 Kbps Calls from Trunk Group Type 4 REA Repeat Attempt message REA Rural Electrification Administration READ Real-time Electronic Access and Display (Networks) READ Relative Element Address Designate READY Rapid Engineering and Delivery ReBOC Regional Broadband Operations Center rec Newsgroups on recreation REC Receiver REC Recommendation REC Record(er) REC Recorder macro file REC RECovery REC Regional Electricity Company REC REquest Confirmation (packet) RECC Reverse Control Channel RECL Review of the Electrical Communications Laboratories (periodical) RECV Receive RED Random Early Detection RED Random Early Discard RED Redirection Information REF Reference ReFP Reference Fixed Part REG Range Extender with Gain reg Regenerator REG Register REG Register Message REG Registry File REG Regular Intercept REGEN Regenerator REGR Regression REI Remote Error Indication REI REset Indication REJ Reject(ion) REL Release message REL Released REL COM Release Complete message REL RB Release message RELGEN Release Note Generator RELIC Recall Last Incoming Call RELP Residual-Excited Linear Predictive Coding REM Indicates Number of Octets in Last Code Word REM Raster Elektronen Mikroskop REM Remark REM Remote End REM Remove REM Resource Management REM Resource Manager REM Ring Error Monitor REN Remote ENable (IEEE-488 Bus Signal) REN Ringer Equivalent Number REORD Reorder Tone REP Radio End Point REP Repeat Character or Control REP Repeater REPAIR Runtime Environment Performance Improvement REPL Report Log RePP Reference Portable Part REPROM Reprogrammable PROM REPT Report REQ Request REQ Required RER Residual Error Rate RER Residual Error Ratio RERN Reverse Explicit Route Number RES Binary Resource File RES Compiled Resource RES Compiled Resource file RES Radio Equipment and Systems (ETSI TC) RES Remote Entry System RES Remote Execution Server RES Reserved RES Reset request (packet) RES Resident Res Residential RES Residential Enhanced Services RES Resource Database RES Response RES Restore RES Restore service RES Restricted RES Restricted Idle RES Resume message RES Signed Response RES 6 Radio Equipment and Systems, Sub-technical Committee 6 RES1 a RESponse calculated by a PT RES2 a RESponse calculated by a FT RESB Residential Enhanced Services Base RESET RESETting RESGRP Restore service for a group of lines REST Restart message REST ACK Restart Acknowledge message REt Resolution Enhancement Technology RET Retiree RET Retrieve message RET ACK Retrieve Acknowledge message RET REJ Retrieve Reject message RETD Requested End-to-End Transit Delay RETMA Radio, Electronic and Television Manufacturers Association RETPD Retention Period REU Rainbow Equipment Unit REV Reversal REV Reverse Charging REV Revertive REV Revision REV(S) Reverse Charging at call Setup time (supplementary service) REV(U) Unconditional Reverse Charging (supplementary service) REVC Reverse Charging REVC Reverse Voice Control Channel REView Reverse Engineering View REVXLVER Reverse Translation Verification REW Rewind REX Relocatable Executable REX Remote Execution Facility REX Remote Execution Service REX Routine Exercise REXEC Remote Execution Protocol REXX Restructured Extended Executor RF DDOC Section: Internal References Rf feeding Resistor RF Radio Frequency RF References/Application Checklist RF Regional Festoon RF Register File RF Resource Finder RF Resume Flag RF Ring Forward RFA Radio Frequency Amplifier RFA Recurrent Fault Analysis RFA Request for Action RFBC Radio Frequency Bypass Capacitor RFC Radio Frequency Channel RFC Radio Frequency Choke RFC Request For Capability RFC Request for Comments RFC Request for Conductorship RFCC Radio Frequency Coupling Capacitor RFCH Radio Frequency Channel RFCR Receive Function Code Register RFD Report First Digit RFD Request for Discussion RFD Rete Fonia Dati (Speech and Data Network) RFDL Receive FDL Register RFE Radio Front End RFF Raster File Format RFF Request for Feature RFF Request for Feature Form RFF Request for Functionality RFFC Radio Frequency Feed-through Capacitor RFH Remote Frame Handler RFHI Remote Frame Handler Interface RFHMA Random Frequency Hopping Multiple Access RFI Radio Frequency Interface RFI Radio Frequency Interference RFI Remote Failure Indication RFI Remote Fault Indication RFI Request for Information RFI Return From Interrupt RFI RF Immunity RFID RF Identification RFL RF Sublayer RFLE Remote Fiber Line Extension RFM Ring Forward Manual RFN Reduced Frame Number RFN Reduced TDMA Frame Number RFNM Ready for Next Message RFO Reason For Outage RFP Radio Fixed Point RFP Remote Feature Pin RFP Report Format Procedure RFP Request for Proposal RFPI Radio Fixed Part Identity RFQ Request for Quotation RFS Ready for Sending RFS Ready For Service RFS Receive Frame Synchronisation RFS Regional Frequency Supplies RFS Remote File Sharing (ATT) RFS Remote File System RFS Request for Framework Service RFS Request for Framework Support RFS Request for Schedule RFS Request for Services RFT Radio Frequency Transformer RFT Regular Full-Time RFT Remote Fiber Terminal RFT Requests for Technology RFT Revisable-Form Text RFTDCA Revisable Form Text DCA (SNADS/DIA) RFT-DCA Revisable-Form Text Document Content Architecture RFTR Radio Frequency Transmit Receive RFTS Remote Fiber Testing System RFU Reserved for Future Use RFX Record Field Exchange RG Rapporteurs Group (ETSI) RG Regenerator RG Regular RG Regular Hunt RG Release Guard RG Ring Ground RG Ringing Generator RG Routing Goop RG/U Radio Government/Universal coax-cable (US MIL-C-17) RGA Reset Circuit Group Acknowledgement message RGB Red, Green, Blue RGB Red-Green-Blue (video signals) RGBA Red, Green, Blue, Alpha RGD Rainbow Generic Device RGI Raibow Generic Interface RGMI Remote Generic Maintenance Interface RGN Redirecting Number RGN Region RGP Raster Graphics Processor RGRP RDAS Group Option RGS Redirecting Subaddress RGS Route Guidance Service RGTR Regenerator RH Receive Hub RH Relative Humidity RH Request Header RH Request Header/Response Header RH Request/response header (SNA) RH Resource Header File RH Rocky Hill RHC Red Hat Commercial RHC Regional Holding Company RHC right-hand circular (polarization) RHCM Relative Humidity Control Module RHCP Right-Hand Circular Polarization RHCP Rural Health Care Provider RHD Residential Hold RHI Range-Hight Indicator (radar) RHOB Relevant Hierarchical Operational Binding RHP Right-Hand Plane RHS Right Hand Side RI Radio Identity RI Radio Infrastructure RI Rate Index RI Reference Identifier RI Reference Implementation Ri Reference Number RI Repeat Indication RI Requirements Identified RI Reset Indication RI Resource Index RI Response Identifier RI Restart Indicator RI Restriction Indicator RI Reverse Index RI Ring In (MAU) RI Ring Indicator RI Ring Interface RI Route Index RI Routing Indicator RI U.S. postal code for Rhode Island RIA Robotic Industry Association RIAA Recording Industry Association of America RIB RenderMan Interface Bytestream RIBE Reactive Ion Beam Etching RIC RACE Industrial Consortium RIC Radio Identity Code RIC Radio Interface Card RIC Realtime Interface Co-processor (IBM Inc.) RIC Remote Interface Controller RICCOM Remote Interface Controller Communication RICCOMM Radio Interface Card Communication System RIC-DS1 Radio Interface Card- DS1 Interface RICH Richardson RICMOS Radiation Insensitive Complementary Metal-Oxide Semiconductor RICOS Radio Interface Card Operating System RIC-T1 Radio Interface Card- T1 Interface RID Record Identifier RID Relative Identifier RID Remote Isolation Device RID Resource ID RID Response ID RID Routing Identifier RIDE Requirements Integrated Development Environment RIE Reactive Ion Etching RIF Rainbow Issue Forum RIF Rate Increase Factor RIF Route Information Field RIF Routing Information Field RIFF Resource Interchange File Format RIG Regional Interest Group RIG Relational Interface Generator RIL Radio Interface Layer RIL Resource Interface Layer RIM Receiver Intermodulation RIM Remote Interface and Maintenance RIM Request Initialization Mode (HDLC) RIN Relative Intensity Noise RINET Reinsurance and Insurance Network RInh Remote Inhibit RIO Reference Information Object (CCA/VTS) RIOT Random access memory Input/Output Timer RIP Radio Interface Protocol RIP Raster Image Processor RIP Remote Imaging Protocol RIP Request in Progress RIP Ring Interface Processor RIP Ring Interworking on Protection RIP Routing Information Protocol (TCP/IP-DoD) RIPE Reseaux IP Europeens RIPL Remote Initial Program Load RIPng RIP Next Generation RIPSO Revised IPSO RIPv2 RIP Version 2 RIRO Roll-In Roll-Out RIS Radio Interface Subsystem RIS Radio Investigation Service (RA-UK) RIS Radiology Information System (Siemens AG) RIS Random Interleaved Sampling RIS Recorded Information Service RIS Reference Information Store (VT) RIS Re-Inventing Information Systems RIS Reset to Initial State RIS Retransmission Identity Signal RISC Reduced Instruction Set Computer RISC Reduced Instruction Set Computing RISE Retrieval and Interchange of Standards in Europe RISLU Remote Integrated Services Line Unit RISP Regional Internet Service Provider RISU Remote Controlled System-Independent Switching Unit RIT Link Remote Inhibit Test message RIT Rate Index Table RIT Rate of Information Throughput, RIT Rate of Information Transfer RIT Raw Input Thread RIT Rochester Institute of Technology RIT Run Integrity Test RITA Reliable Internetwork Troubleshooting Agent RITS Review and Inspection Tool Set RITT Research Institute of Telecommunications and Transmission RIWS Remote Incoming Window Size RJ Rapporteurs Joint Meeting (ETSI) RJ Register Junctor RJ Registered Jack RJ Reject RJE Remote Job Entry RJS Remote Job Service RJU Residential Junction Unit RKB Ring Knowledge Base Rl load Resistance RL Rate Line RL Receive Leg RL Reflection Loss RL Register List RL Reinforced Learning RL Remote Login RL Remote Loopback RL Requirements List RL Reservation Level RL Resource Layer RL Resource Locator RL Return Loss RL Run-Length RL1 Reservation Level 1 RL2 Reservation Level 2 RLAN Radio Local Area Network RLAT Resource Layer Association Table RLB Remote Loopback RLC Radio Link Control RLC Release Complete message RLC Remote Line Controller RLC Resource Locator Class RLCE Remote Line Concentrating Equipment RLCM Remote Line Concentrating Module RLCN Remote Logical Channel Number RLD Relocation Dictionary RLE Remote Line Extension RLE réseau local d'entreprise RLE Run Length Encoded RLE Run Length Encoding RLF Reverse, Line Feed RLG MDII: Release Guard Signal Received- Nonstable Outgoing Trunk RLG Release Guard message RLG Release Guard signal RLI Remote Line Interface RLIN Research Libraries Information Network RLL Radio in the Local Loop RLL Radio Link Layer RLL Radio Local Loop RLL Radio on the Local Loop RLL Receive Loop Loss RLL Run Length Limited (Coding, Magnetic Recording) RLM Remote Line Module RLMPS Remote-to-Local Maximum Packet Size RLMS Return Loss Measuring Set RLN Remote LAN Node RLO Receiver Local Oscillator RLP Radio Link Protocol RLPF Reconstruction Low-Pass Filter RLR Receiver Loudness Rating RLRE A-RELEASE response/confirm RLRH Handset Receiving Loudness Rating RLRQ A-RELEASE request/indication RLS Call Release RLS Recursive Least Squares RLS Release RLS Release message RLS Release Utility RLS Remote Line Switch RLS Remote Logs System RLSD Receive Line Signal Detector RLSD Released Message RLSF ReLeaSe Failure RLSI Receive Line Signal Indicator RLSM Remote Line Switch Module RLST Release Timer RLT Release Link Trunk(ing) RLT Remote Line Test RLTC Remote-to-Local Throughput Class RLTP Remote Line Test Processor RLU Remote Line Unit RLWE Receive Lower Window Edge RM Rapid Messaging RM Rate Multiplier RM Record Mark RM Reference Manual RM Reference Model RM Regional Manager RM Reliable Multicast RM Remote Member RM Replication Manager RM Requirements Management RM Requirements Model RM Reservation Management RM Reset Mode RM Resolution Meeting (ETSI) RM Resource Management RM Resource Manager RM Resource Module RM Role Mapping RM/OSI Reference Model of Open Systems Interconnection RMA Random Multiple Access RMA RealMedia Architecture RMA Remote Administration module RMA Remote Management Agent RMA Request for Manual Assistance RMA Returned Merchandise Authorization RMAN Remote Load Management RMan Resource Management RMAP Remote Maintenance and Administration Position RMAP Remote Memory Administration Position RMAS Remote Memory Administration System RMATS-1 Remote Maintenance, Administration and Traffic System-1 RMB Remote Make Busy RMB Remote Manual Busy RMB Right Mouse Button RMBAM Remote Make Busy for Analog Member of EKTS RMBPT Remote Make Busy Point RMBPTAM Remote Make Busy Point for Analog Member of EKTS RMC Remote Maintenance Center RMC Resource Management Client RMCP Remote Module Control Processor RMCS Remote Monitor and Control System RMCS Resource Manager Communication System RMD RAM Mobile Data RMD Reliable Multicast Datagram RMD Required Markup Declaration RME Remote Miscellaneous Equipment RME Routing Management Entity RMESE Request Multiplex Entry Signalling Entity RMF Reliable Multicast Framework RMI Random Minimum Interference RMI Remote Maintenance Interface RMI Remote Method Invocation RMI Resource Manager Interface RMI Route Monitoring Information RMIA Resource Management Independent Access RMIB Remote Management Information Base RMIR Random Minimum Interference with Reassignment RML Resource Management Layer RMM Remote Maintenance Module RMM Resource Maintenance Manager RMN Remote Multiplexer Node RMN Remote Multiplexor Node RMO Real MO RMOA Real-time Multimedia Over ATM RMOD Requirements Modeling RModA Resource Module Agent RM-ODP Reference Model for Open Distributed Processing RMON Internet Remote Monitoring MIB RMON Remote Monitoring RMon Remote Monitoring RMOOS Rapid Messaging Out-of-Service RMOS Realtime Multitasking multiprocessor Operating System (Siemens AG) RMP Reference Model Processor RMP Release Management Process RMP Reliable Multicast Protocol RMP Remote Meter Pulsing RMP Resource Management Proxy RMP Routing Management Protocol RMP Rural Modernization Program RMR Remote Message Register, Reversal RMRP Remote Module Radio Port RMS Record Management System RMS Redundancy Management Services RMS Release Management System RMS Remote Measurement System RMS Remote Register, Signal Distribution Point RMS Resource Management System RMS RID/MID/PID System RMS Root Mean Square rms root mean square RMS Root Mean Square (value) RMS/D Remote Measurement System/Digital RMS/M Remote Measurement System/Metallic RMSC Remote Maintenance Switching Center RMS-D Remote Measurement System-Digital RMSG Rapid Messaging RMS-M Remote Measurement System-Metallic RMT Reliable Multicast Transaction RMT Remote Message Register for Toll Calls RMT Ring Management RMTA Remote Metallic Test Access RMTE ReMoTE RMTM Remote Maintenance Trunk Module RMTP Reliable Multicast Transport Protocol RMTP+ Reliable Multicast Transport Protocol Plus RMTS Remote Module Time Switch RMU Remote Maintenance Unit RMU Remote Measurement Unit RMU Remote Monitoring Unit RMUI Remote User Interface RMUI Resource Management User Interface RMV Remove RMW Read-Modify-Write RMWI Remote Message Waiting Indicator rn Read News RN Redirecting Number RN Reference Noise RN Regional Number RN Release Notes RN Re-routeing Number RN Routing Number RN Teilnehmer-Rufnummer (Subscriber Directory Number) RNA Remote Network Access RNA Ring Node Address RNAM Redirecting Name Delivery RNAMBL Redirecting Name Delivery Billing Records RNAMPN Redirecting Name Delivery with Personal Name Delivery RNC Radio Network Controller RNCC Regional Network Control Centre RNCPN Redirected Number/Calling Party Number RNCS Remote Network Communication System RND Random RND Redirecting Number Delivery RNDTYP Redirecting Number Delivery Type RNE Reseau National d'Essais (F) RNF Receiver Noise Figure RNG Redirecting Number RNG Ring RNHL Release Notes Help Line RNI Early Cut-Through for Remote Network Interworking RNI Radio Network Interface RNI Rainbow Network Interconnect RNI Raw Native Interface RNI Remote Network Interworking RNIBL Redirecting Number Information Delivery Billing Records RNIBLP Redirecting Number Information Delivery Billing Records for PRI RNIE Redirecting Number Information Element RNL Radio Network Layer RNM Resource Notification Manager RNMS Regional Network Monitoring System RNN Redirection Number RNN Rejection Information RNP Redirecting Number Privacy RNR Receiver Not Ready RNT Radio Network Termination RNTABLE Table of 128 integers in the hopping sequence RNU Radio Network Unit RNUM Registration Number RO ISO country code for Socialist Republic of Romania RO Ready-Only RO Receive Only RO Remote Operation(s) RO Reorder RO Request Object RO Responsible Organization RO Ring Out (MAU) RO ROSE Service RO- Remote Operation- ROA Recognized Operating Agency ROA Return On Assets ROAD Research on Object-Oriented Analysis and Design ROAD Routing and Addressing ROADS Running Out of Address Space ROB Reorder Buffer ROB Resilent Object ROBO Remote Office/Branch Office ROC Receiver Operating Characteristic ROC Regional Operating Company ROC RTP Object Center ROCH Rochester RODM Resource Object Data Manager RODR Reorder Treatment ROE Remote Office Equipment ROER RO-ERROR Application Protocol Data Unit ROES Receive Only Earth Station ROFL Rolling on the floor laughing ROH Receiver Off-Hook ROHP Receive Overhead Processor ROI Region Of Interest ROI Return On Investment ROIV Invoke (ROSE PDU) ROIV RO-INVOKE Application Protocol Data Unit ROL Read-Only Latch ROL ROtate to the Left ROLC Routing Over Large Clouds ROLR Receiving Objective Loudness Rating ROM Read-Only Memory ROM Relational Object Manager RON Radio Overlay Network RONI Remote Operator Number Identification ROOM Real-Time Object-Oriented Modeling ROOM ROSA Object Model ROOTSIG Research Triangle Area Object Oriented Technology Special Interest Group ROP Raster Operation ROP Read-Only Printer ROP Receive-Only Printer ROP RTP Object Center RoP Rules of Procedure ROP2 Binary Raster Operation ROPM Remote Operations Protocol Machine ROPM ROSE Protocol Machine ROPP Receive-Only Page Printer ROR Reorigination ROR ROtate to the Right RORE Return Error (ROSE PDU) RORJ ReJect (ROSE PDU) RORJ RO-REJECT Application Protocol Data Unit RORS Return Result (ROSE PDU) RORS RO-RESULT Application Protocol Data Unit ROS Read-Only Storage ROS Realtime Operating System ROS Remote Operation Service ROS Remote Operations ROS Remote Operations Server ROS Remote Operations Service ROS Remote Operator System ROS Remote Oscillator Shelf ROS Return On Sales ROSA RACE Open Services Architecture ROSE Remote Operations Service Element ROSE Research Open System for Europe ROSI Radio Signaling ROT Remote Operation Terminal ROTFL Rolling on the floor laughing ROTL Remote Office Test Line ROTR Receive Only Typing Reperforator ROTS Rotary Out Trunk Switch ROTT Reorder Tone Trunk ROUTOP Routing Optimizer ROV Remotely Operated Vehicle ROWS Remote Outgoing Window Size RP Radio Port RP Reference Point RP Remote Printer RP Remote Programming RP Rendezvous Point RP Requirements Process RP Resource Processor RP Resource Profile RP Routing Point RP Rules of Procedure RPA Repeated Alert RPA Resource Planning Appropriation RPA Resting Point of Accomodation RPAG Radio Paging RPAM Receive Pulse Amplitude Modulation RPC Radio Port Controller RPC Raster Printer Controller RPC Remote Procedure Call RPC Remote Process Creator RPC_M Remote Procedure Call Message RPCGEN Remote Procedure Call Protocol Compiler RPCM Receive PCM RPCM Remote Procedure Call Manager RPCM Remote Procedure Call Mechanism RPCU Radio Port Control Unit RPD Resource Profile Directory RPDI Radio Packet Data Infrastructure (TETRA) RPDN Radio Packet Data Network (TETRA) RPDU Receiver Power Distribution Unit RPE Regular Pulse Excitation RPE Regular Pulse-Excited RPE Remote Peripheral Equipment RPE Residual Pulse Excitation RPE Resource Profile Entry RPE-LPC Regular Pulse Excitation/Linear Predictive Coding RPELTP Regular Pulse Excitation Long-Term Prediction RPE-LTP Regular Pulse Excitation-Long Term Prediction RPE-LTP Residual Pulse Excitation- Long Term Predictive RPF Reverse Path Forwarding RPG Report Program Generator RPG Role-Playing Game RPG Rotary Pulse Generator RPI Radio Port Intermediary RPI Remote Packet Interface RPI Rensselaer Polytechnic Institute RPI Retail Price Index RPI Return to Point of Interrupt RPI Rockwell Protocol Interface RPI Routing Protocol Interface RPL Radio Physical Layer RPL Rapid Prototyping Language RPL Remote Program Load RPL Requested Privilege Level RPL Resource Profile Locator RPLPC Regular Pulse Linear Predictive Coding RPLSQ Remote Packet Level Sequencing RPM Radio Port Multiplexer RPM Red Hat Package Manager RPM Regular Peripheral Module RPM Reliability Performance Measure RPM Remote Port Module RPM Remote Power Monitor RPM Requirements Process Model RPM Revolutions Per Minute rpm revolutions per minute RPM Rotations Per Minute RPN Physical Page Number RPN Radio fixed Part Number RPN Real Page Number RPN Reverse Polish Notation (Calculators) RPO Remote Processor Outage RPOA Recognized Private Operating Administration RPOA Registered Private Operating Agency RPOAB Recognized Private Operating Administration Barred RPOAS Recognized Private Operating Administration Selection RPP Reliability Prediction Procedure RPS Recall Position Seizure RPS Reference Picture Selection RPS Regional Patch Selector RPS Regional Patching System rps Revolutions Per Second RPS Ring Parameter Server RPS Rotational Position Sensing RPSA Redirecting Party Subaddress RPSB Rate Period Specific Billing RPSL Routing Policy Specification Language RPT Radio Personal Terminal RPT Repeat RPT Repeater RPT Repetition RPT Report File RPTR Repeater RPU Radio Port Unit RPU Residential Power Unit RPV Remote Piloted Vehicle RPX Raster Printer Accelerator (Laser Printer Chip) RQ Rate Quotation RQ Request RQ Requests in Queue RQBE Relational Query By Example RQGR Reliability and Quality Generic Requirements RQMS Reliability and Quality Measurements for Telecommunications System s RQMT Requirement RQMTS Requirements RQSSGR Reliability and Quality Switching Systems Generic Requirements RR Radio Regulations (ITU) RR Radio Regulatory (CEPT) RR Radio Resource RR Radio Resource management RR Rate and Route RR Receive Ready RR Receiver Ready RR Receiver Report RR Register-Register RR Relay Rack RR Remote Relay RR Repair Rate RR Required Resource RR Reroute RR Re-Route RR Rerouted RR Resource Record RR Return Rate RR Return Result RR Revertive Ring RR Ripple Rejection RR Round Robin RR Routing and Reporting RR Routing Registry RRAS Routing and Remote Access Service RRB Radio Regulations Board RRBC Release-to-Release Binary Compatibility RRBCME Request Report BCM Event RRC Radio Resource Control RRC Regional Control Center RRC Regional Radiocommunication Conference (ITU) RRC Root Raised Cosine RRCA Rapid Root Cause Analysis RRD Revised Resistance Design RRDS Relative Record Data Set RRE Receive Reference Equivalent RRE Receiving Reference Equivalent RRF Radio-Related Functions RRF Real Register File RRF Reliability Review Forum RRG Relay Rack Ground RRG Resistance Ring to Ground RRI request/response indicator (SNA) RRI Re-Route Inhibit RRIF Remote Radio Interface RRJ Registration Reject RRL Radio Research Laboratories RRM Radio Resource Management RRM Regenerative Repeater Machine RRM Remote Receiver Module RRN Rerouting Network RRQ Read Request RRQ Registration Request RRR Regular Reroute RRR Reservation Bits RRTE Reroute RS Radiocommunication Sector (ITU-RS) RS Rate Schedule RS Rate Step RS Reader Stop RS Recall Service RS Receive Signature RS Reception Status RS Recommended Standard (EIA) RS Record Separator (IA5) RS Record Start RS Redirecting Subaddress RS Reed-Solomon RS Regenerator Section RS Register/Sender RS Register-Storage RS Registration Services RS Relative Shelf RS Remote Single-Layer RS Request to Send RS Requirement(s) Specification RS Resource Surrogate RS ReSynchronize RS Route Selector RS Route Set RS Route Switch RS Route Switching RS Session Key for Routing R-S Reed-Solomon RSA Receiver Service Agent RSA Repair Service Answering RSA Repair Service Attendant RSA Reset Circuit Group Acknowledge message RSA Rivest-Shamir-Adleman RSA Root Service Allocator RSA Rural Service Area RSA Rural Serving Area RSA Rural Statistical Area RSAC Recreational Software Advisory Council RSADSI RSA Data Security Inc. RSAIT Redirecting Subaddress Information Transfer RSAT Reliability and System Architecture Testing RSB Repair Service Bureau RSB Reset-Band signal RSC Radio Station, Central RSC Rating System Client RSC Receiver Signaling Channel RSC Recognition Selection Committee RSC Recursive Systematic Convolutional RSC Remote Switching Center RSC Remote System Call RSC Reset Circuit message RSC Reset Confirmation message RSC Reset-Circuit signal RSC Route Set Congestion Access Test Message RSCI ISDN Remote Switching Center RSCM Reset Confirmation Message RSCP Received Signal Code Power RSCS Remote Spooling Communications Subsystem RSCS Remote Switching Center- SONET RSCS Remote Switching Center Streamlined RSC-S Remote Switching Center- SONET RSD Redirecting Subaddress Delivery RSD Remote Serving Device RSD Requirements Specification Descriptor RSD Root Service Directory RSDR Real-Time State Dependent Routing RSDS Root Service Directory Surrogate RSE Radio System Entity RSE Register Signalling Element RSE Remote Service Equipment RSE Remote Single Layer Embedded (deprecated test method) RSEE Rainbow Software Engineering Environment RSET ReSET (HDLC) RSF Resource Finder RSFG Route Server Functional Group RSG Reset Circuit Group Message RSGB Radio Society of Great Britain (Radio Amateur) RSH Remote Shell RSH Restricted Shell rsh Restricted Shell RSI Rate Schedule Indicator RSI Record Status Indicator RSI Register Sender Inward RSI Repetitive Strain Injury RSI Repetitive Stress Injury RSI Reselection Indication message RSIDE Remote Side RSIE Redirecting Subaddress Information Element RSL Radio Signaling Link RSL Received Signal Level RSL Remote Serial Link RSL Request and Status Link RSLE Remote Subscriber Line Equipment RSLM Remote Subscriber Line Module RSLS Replypath SideLobe Suppression RSLT Radio Subscriber Line Terminal RSLT Result RSM Rainbow System Manager RSM Remote Service Module RSM Remote Switch(ing) Module RSM Reset message RSM Route Set Management RSM Route Set Method RSM Route Set Test Message RSM Route State Machine RSM Signaling-Route-Set-Test Message RSN Radio Station, Nodal RSN Real soon now RSN Record Sequence Number RSN Remote Switched Network Access RSO Regional Standard(s) Organization RSO Register Sender Outward RSOH Regenerator Section Overhead RSOS Remote Support Operating System RSP Real-time Service Processor RSP Response RSP Restricted Sent Paid RSP Root Service Proxy RSP Route Set Test Prohibited message RSP Runtime, Signaling & PRISM RSP Signaling-Route-Set-Test Prohibited signal RSPID Remote Service Profile Identifier RSR Reselect Request message RSR Reset Request message RSR Route Set Test Restricted message RSR Signaling-Route-Set-Test Restricted signal RSRM Reset Request Message RSRP Reference Signal Received Power -> 4G LTE RSRQ Reference Signal Received Quality -> 4G LTE RSRT Signaling Route Set Test Control RSS Received Signal Strength RSS Register Signalling System RSS Remote Switching Site RSS Remote Switching System RSS Residential Service System RSS Root Service Selector RSS Root-Sum of Squares RSS LIN Remote Switching System Line RSSI Radio Signal Strength Indication RSSI Radio Signal Strength Indicator RSSI Received Signal Strength Indication RSSI Received Signal Strength Indicator -> 4G LTE RSSI Received Signal Strength Information RST MDII: Reset Signal Received that Aborts Outgoing Call RST Radio Station, Terminal RST Regenerator Section Termination RST Repeater Station RST Reset RST Reset flag RST Reset-Circuit RST Restore RST Restricted RST Route Set Test message RST Route Set Test signal RST Routing and Screening Treatment RSTE Regenerator Section Terminating Equipment RSTP Real-Time Stream Transport Protocol RSTP Regional Signal Transfer Point RSTS Resource Sharing Time Sharing RSU Remote Subscriber Unit RSU Remote Subscriber(s) Unit RSU Remote Switch(ing) Unit RSUS Requested Suspended Line RSUS Requested Suspension RSVA Rate Schedule Variation RSVD Rapid Sequential Visual Display RSVD Reserved RSVD Reserved bits for future definition RSVP Resource Reservation Protocol RSX Real Time Resource Sharing Executive RSX Realistic Sound Experience RSZI Regional Subscription Zone Identity RT DDOC Section: Real Time RT Radio Telephony RT Radio Terminal RT RT Rate RT Real Time RT Real Time RT Receive Timing RT Register Traffic RT Register Transfer RT Register Translator RT Reliable Transfer RT Remembered Table RT Remote Terminal RT Reorder Tone RT Request Type RT Resource Type RT Response Time RT Resume Typing RT Ring Timing RT Ring Trip RT Ringback Tone RT Ringing Tone RT Ring-Trip RT RoundTable RT Route RT Route Treatment RT Router RT Routing Table RT RTSE Service RT- Reliable Transfer- RT(X)-DOS Real-Time (Task)-DOS RT1 Real-Time-1 RT2 Real-Time-2 RTA Rapid Thermal Annealing RTA Real-Time (Data) Acquisition RTA Remote Test Access RTA Remote Trunk Arrangement RTA Remote Trunking Arrangement RTA Response Time Analyzer (INOS-ATT) RTA Routing and Terminal Administration RTAC Regional Technical Assistance Center RTAC Transfer Allowed Control RTAM Remote Terminal Access Method RTANNC Routed to an Announcement RTAP Real Time Application Platform RTAP Real-Time Applications RTB Real Time Billing RTB Retransmission Buffer RTB Route Block RTC Raleigh Training Center RTC Real Time Controller RTC Real-Time Chat RTC Real-Time Clock RTC Real-Time Control RTC Restart Confirmation RTC Restart Confirmation (packet) RTC Return To Control RTC Rich Text Compressed RTC Routing Control RTC Run-To-Completion RTCA Real Time Charge Advice RTCA Requirements and Technical Concepts for Aviation (USA) RTCC Transfer-Controlled Control RTCG Run-To-Completion Group RTCP Real Time Control Protocol RTCP Real-Time Transport Control Protocol RTCP RTP Control Protocol RTD Real Time & Distributed RTD Real Time Difference RTD Real Time Distributed RTD Record Type Descriptor RTD Reference Time Device RTD Reset Trunk Data RTD Resistive Temperature Detector RTD Round Trip Delay RTDC Regional Telecommunication Development Conference RTDE Round-Trip Delay Estimate RTDMS Real-Time Data Management System RTDMS Real-Time Database Management System RTDN Routed to the Specified DN RTDS Real-Time Distributed System Kernel RTDSE Round Trip Delay Signalling Entity RTDTR Real-Time Dynamic Traffic Routing RTE Real-Time Executive RTE Real-Time Extensions RTE Remote Terminal Emulator RTE Remote Terminal Emulator/response time estimator (SNA) RTE Route RTE Route Table Entries RTE Routing RTE Routing Enabled RTE Run-Time Environment RTEB Routing Block RTEC Raleigh Technical Education Center RTEI Remote Terminal Endpoint Identifier RTERMIDTYP Remote Terminal ID Type RTES Real Time Expert System (Bellcore) RTF Radio Terminal Function RTF Real Time Feed RTF Rich Text Format RTF-J Rich Text Format-Japanese RTFM Read the Fantastic Manual RTFM Read the Fine Manual RTFM Read the Friendly Manual RTFM Read the Funny Manual RTFM Read the manual RTFR Real Time Flexible Rating RTG Resistance Tip to Ground RTH Remote Telecommunications Hub RTI Rate Treatment Index RTI Referred To Input RTI Remote Terminal Interface RTI Response Type Indicator RTI RestarT Indication RTI Return from Interrupt RTI Road Transport Informatics RTI Road Transport Information systems RTI Route Index RTI Run Time Instrumentation RTIC Real Time Interface Coprocessor RTIE Relative Time Interval Error RTIF Remote Terminal Interface RTIF Remote Thumbwheel Interface RTIF Reset Terminal Interface RTIF Restart Terminal Interface RTIU Remote Terminal Interface Unit RTIX Rate Treatment Index Table RTL Radio Technology Laboratory (RA) RTL Register Transfer Language RTL Register Transfer Level RTL Resistor-Transistor Logic RTL Round Trip Loss RTL Runtime Library RTL Run-Time Library RTL Siemens Research and Technology Laboratories RTLP Receive Transmission Level Point RTLP Reference Transmission Level Point RTM Ready To Manufacture RTM Receive Transmit Multiplex RTM Reference Test Method RTM Release to Manufacturing RTM Reliablity Test Module RTM Requirements Traceability and Management RTM Response Time Monitor (SNA) RTM Runtime Manager RTM Run-Time Manager RTMC Real-Time Management Coordination RTMc RTM Candidate RTMC RTM Compile RTMP Routing Table Maintenance Protocol RTMP Routing Table Management Protocol RTMS Radio Telephone Mobile System RTMv3 Requirements Traceability and Management- Version 3 RTN Rate Treatment Number RTN Retrain Negative RTNR Real-Time Network Routing RTNR Ringtone No Reply RTO Ready To Order RTO Retransmission Time Out RTOFM Read the Other Fine Manual RTOFM Read the Other Friendly Manual RTOIS Ready To Order In-Service RTO-IS Ready To Order- In Service RTONIS Ready To Order Not In-Service RTO-NIS Ready To Order- Not In Service RTORQ RT-OPEN request/indication RTOS Real-Time Operating System RTP Rapid Thermal Processing RTP Rapid Transport Protocol RTP Real-Time Protocol RTP Real-Time Transport Protocol RTP Release To Pivot RTP Research Triangle Park RTP Retrain Positive RTP Room Temperature and Pressure RTPC Transfer Prohibited Control RTPM Reliable Transfer Protocol Machine RTPM RTSE Protocol Machine RTR Real-Time Reliable RTR Resistance Tip to Ring RTR RestarT Request (packet) RTRC Transfer-Restricted Control RTRS Real-Time Rating System RTRV Retrieve RTS Ready To Ship RTS Real-Time Simulator RTS Real-Time System RTS Reliable Transfer Service (OSI, X.400/MHS) RTS Remote Test System RTS Request To Send (signal) RTS Residual Time Stamp RTS Return from Subroutine RTS Return To Service RTS Runtime Service RTS Run-Time System RTS-5A Remote Test System-5A RTSA Real-Time Structured Analysis RTSE Reliable Transfer Service Element (OSI, X.400/MHS) RTSE Remote Transfer Service Element RTSI Real-Time System Integration RTSP Real Time Streaming Protocol RTSS Run-Time Support System RTT Radio Teletypewriter RTT Radio Transmission Technology RTT RadioTeleType RTT Regie des Telegraphes et des Telephones (B) RTT Resident Tunneling Transistors RTT Round-Trip Time RTT Route Translation Table RTT Run-Time Team RTTB Real-Time Testbed RTTF Routine Transmission Test Failure RTTH Radio To The Home (DECT) RTTI Road Traffic and Transport Informatics RTTI Run-Time Type Identification RTTI Run-Time Type Information RTTP RT-TURN-PLEASE RTTR TR-TRANSFER-REQUEST RTTS Receive Transmit Time Switch RTTT Road Transport and Traffic Telematics RTTU Remote Trunk Test Unit RTTY Radio Teletype RTTY Radio Teletypewriter RTU Remote Terminal Unit RTU Remote Test Unit RTU Residential Transceiver Unit RTU Right to Use RTU Routing Update RTV Real-Time Video RTV Room Temperature Vulcanising (Elastomer) rt-VBR Real-Time Variable Bit Rate RTW Rate Treatment Word RTWC Redirected Two-Way Call RTX Real-Time Executive RU Are you? RU ISO country code for Russian Federation (Russia) RU Recording Unit RU Release Unit RU Remote Unit RU request unit/response unit (SNA) RU Residential Unit RU Response Unit RUA Received Upstream Neighbor's Address RUA Remote User Area RUB Remote Unit Bay RUC Remote Unit Cabinet RUI Request Unit Interface RUN Runtime RUP Reuse Partitioning RUPI Remote Universal Peripheral Interface RURAX Rural Automatic Exchange RUS Restrict Usage Sensitive Use RUS Rural Utility Services RUWE Receive Upper Window Edge RV Remote Video RVA Recorded Voice Announcement RVA Review Announcements RvC Dutch Council for Certification RVC Rate Variation Code RVC Reverse Voice Channel RVD Remote Virtual Disk RVI ReVerse Interrupt (BSC) RVLC Reverse VLC RVM Review Minutes RVMS RDAS Voice Mail Service RVQ Recursive Vector Quantization RVR Rapid Virtual Reality RVSA Remote Variant Selection Algorithm RVT Reverse Trunk Timing RVT Routing Verification Test RW ISO country code for Rwandese Republic (Rwanda) RW Read/Write RW Regional Workshop RW Rogue Wave RWA Routing Wavelength Assignment RWC Reduced Write-Current RWI Radio and Wire Integration RWI Reset Window Indicator RWITM Read With Intent To Modify RWM Read-Write Memory RWOK Read/Write OK RWS Regional Workshop RWS-CC Regional Workshop Co-ordinating Committee RX Receive RX Receiver Rx Reception RX Register-Indexed Storage RX Remote Exchange RX Resume Execution RxBD Receive Buffer Descriptor RXD Receive Data RXLEV Received Signal Level RxM Receive Machine RXQUAL Received Signal Quality RxSB Received Signaling Bit Pattern RZ Resistance Zone RZ Return-to-Zero (recording) RZ(P) Polarized Return-to-Zero (recording) back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R - S - T|U|V|W|X|Y|Z

S S reference point S Screen s second S Segment S Sent S Serial S Session S Session Layer S Session Layer Service S Session Transactor S Set-up S Short Duration S Sign S Sleeve S Solved S South S Spanish S Station S Status S Sticky Bit S Storage S Strike-Through (HTML tag) s String S Student S Supervisor S Supervisory S Supervisory function bit S Surrogate S Switch S- Slotted S&H Sample and Hold S&SE Software and Systems Engineering S/360 System 360 S/370 System 370 S/390 System 390 S/A Status/Alarm S/D Signal/Distortion Ratio S/D Source/Drain S/DMS Supernode/DMS S/H Sample and Hold S/I Signal to Interference ratio S/M/ST SCE Service/Modular/System Transferrence S/MIME Secure MIME S/N Signal to Noise ratio S/P Serial-to-Parallel S/PDIF Sony/Philips Digital Interface Format S/P-DIF Sony/Philips Digital Interface Format S/R Send/Receive S/RSC SONET Remote Switching Center S/S Summary/Status S/SYS Storage System S/T-ISLC S/T-Interface ISDN Line Card S/U Single User S/W Software S/WAN Secure WAN S1) Supervisory function bit S12 System 12 s5fs System V File System SA ISO country code for Kingdom of Saudi Arabia SA Scientific American (periodical) SA Search Area (TETRA) SA Section Adaptation SA Service Affecting SA Service Agent SA Service Alarm SA Service Analysis SA Service Area SA Service Assistant SA Set-up Acknowledge SA Signaling Agent SA Single Armor SA Single Armored SA Slow Acting SA Source Address (IBM) SA Source Allocation SA Stand-Alone SA Structured Analysis SA Stubs Available SA Sub-address SA Switched Access SA System Administration SA System Administrator SA System Agent SA/IC Service Assistant/In Charge SA/SD Structured Analysis/Structured Design SAA Service Adaptive Access SAA Service Architecture Analysis SAA Service Aspects and Applications SAA Standards Association of Australia SAA System Application Architecture (IBM) SAAL Signaling ATM Adaptation Layer S-AAL Signaling ATM Adaptation Layer SAAL-5 Signaling ATM Adaptation Layer 5 SABA Software Architecture Based Analysis SABM Set Asynchronous Balanced Mode SABME Set Asynchronous Balanced Mode Extended SABT Status, Aborted SAC SCE Access Control SAC Service Access Code SAC Service Access Controller SAC Service Activation Controller SAC Service Agent Connection SAC Serving Area Concept SAC Signaling Address Controller SAC Site Administrative Computer SAC Special Area Code SAC Status and Command SAC Status and Control SAC STM-to-ATM Converter SAC Synchronous-to-Asynchronous Converter SAC Synchronous-to-ATM Conversion SAC Syntax-Based Arithmetic Coding SAC System Activity Coordinator SACB Subscriber Activated Call Blocking SACC Service Agent Connection Component SACC Slow Associated Control Channel SACCH Slow Associated Control Channel SACCH Slow Associated Control CHannnel SACCH/C4 Slow Associated Control Channel/SDCCH/4 SACCH/C4 Slow, SDCCH/4 Associated, Control CHannel SACCH/C8 Slow Associated Control Channel/SDCCH/8 SACCH/T Slow Associated Control Channel/Traffic Channel SACCH/T Slow, TCH-Associated, Control CHannel SACCH/TF Slow Associated Control Channel/Traffic Channel Full Rate SACCH/TF Slow, TCH/F-Associated, Control CHannel SACCH/TH Slow Associated Control Channel/Traffic Channel Half Rate SACCH/TH Slow, TCH/H-associated, Control CHannel SACCS Strategic Air Command Control System SACF Service Access Control Function SACF Service Application Control Function SACF Single Association Control Function SACF Single Association Controlling Function SACHH/C4 Slow, SDCCH/4 Associated, Control CHannel SACK Selective Acknowledgement SACL System Access Control List SACR Set of Allowable Calling Rates SACTS Sequentially Controlled automatic Transmitter SAD Send All Digits message SAD Sender Attachment Delay SAD Service Attribute Determinator SAD Single Administrative Document (UN/ECE) SAD Space Antennae Diversity SAD Speech Activity Detection SADC Special Access Data Channel SADM Synchronous Asynchronous Data Module SADR Sender Atachment Delay Recorder SADR Sender Attachment Delay Recording SADS System Administration Data System SAE Service Alteration Element SAE Society of Automotive Engineers SAE Switch Access Evolution SAE Switched Access Evolution SAE Systems Application Engineering SAER Service and Equipment Record SAF Service Access Facility SAF Service Agency Framework SAF Service Agent Framework SAF Strategic Automation Framework SAFE Security and Freedom through Encryption SAFE Store And Forward Element SAFER Split Access and Flexible Egress Routing SAFT Service Agency Framework Team SAF-TE SCSI Accessed Fault-Tolerant Enclosures SAG SQL Access Group SAGE Security Algorithms Group of Experts (ETSI) SAGE SemiAutomatic Ground Environment, SAGE Space-Alternating Generalized Expectation-Maximization SAGFET Self Aligned Gate FET SAGR Supergroup Automatic Gain Regulator SAI S/T-Interface Activity Indicator sai S/T-Interface Activity Indicator SAI Security Association Identifier SAI Service Access Indicator SAI Service Area Interface SAI Sub-Architecture Interface SAI System Access Interface SAIC Science Applications International Corporation SAID Speech-Activated Intelligent Dialing SAJI Self-Aligned Junction Isolation (IC Production) SAL Service Access Layer SAL Soft Adjacent Layer SAL Solid ALuminum (Capacitor) SAL Special Access Line SAL SQL Windows Application Language SALN Station Administration Line SALT Subscriber's Apparatus Line Tester SAM SDM ASCII MAPCI/CI SAM Secure Access Manager SAM Security Access Manager SAM Sequential Access Methode SAM Serial-Access Memory SAM Service Access Multiplexer SAM Service Alteration Manager SAM Special Application Module SAM Speech-Activated Manipulator SAM Stand-Alone Micro-sequencer SAM Stocklist Application Module SAM Subscriber Access Multiplexer SAM Subsequent Address Message SAM Subsequent Address message SAM Subsystem Access Model SAM Surface-to-Air Missile SAM Symantec Anti-Virus for Macintosh SAM System Access Monitor SAM System Administration Manager SAM System Administration Memos SAM1 Subsequent Address Message No. 1 SAM2 Subsequent Address Message No. 2 SAM3 Subsequent Address Message No. 3 SAM4 Subsequent Address Message No. 4 SAM5 Subsequent Address Message No. 5 SAM6 Subsequent Address Message No. 6 SAM7 Subsequent Address Message No. 7 SAMA Simple Asynchronous Multiple Access SAMA Supplementary Automatic Message Accounting SAMBO Simultaneous Auroral Multi Balloon Observation SAMC Subscriber Access Maintenance Center SAME Subscriber Access Maintenance Entity SAME System Analyze Message Event SAMS Services and Access Management System SAMTS South American Mobile Telephone Service SAN Server Area Networking SAN Service Access Node SAN Small Area Network SAN Storage Area Network SAN Switching Access Networks SANC Signaling Area/Network Code SANE Standard Apple Numeric Environment SANSW Secure Answering SANZ Standards Association of New Zealand SAO Single Association Object SAO Subsequent Address With One Signal message SAP Second Audio Programme (Multi-Channel TV Sound) SAP Service Access Point SAP Service Advertisement Protocol SAP Service Advertising Packet SAP Service Advertising Protocol SAP Service Alteration Point SAP Station Auxiliary Power SAP2 Service Access Point 2 SAPI Service Access Point Identifier SAPI Service Access Point Indicator SAPI Speech Application Programming Interface SAPID Service Access Point Identifier SAPR Source Address Pointer Register SAPR Supervisor Area Pointer Register SAR Search And Rescue SAR Segmentation and Reassembly SAR Segmentation And Reassembly SAR Segmentation and Reassembly Sublayer SAR Software Architecture Review SAR Specific Absorption Rate (Watts/kilogram) SAR Static Attachment Requirements SAR Store Address Register SAR Successive Approximation Register (ADC) SAR Synthetic Aperture Radar SAR System Address Register SARA Software Architecture for Reuse in Access SARB Status, All Resources Busy SARC Symantec Anti-Virus Research Center SARF Security Alarm Reporting Function SARI Secondary Access Rights Identity SARI Secondary ARI SARM Set Asynchronous Response Mode (HDLC, LAPB) SARME Set Asynchronous Response Mode Extended (HDLC) SARP Standards And Recommended Practices (ICAO) SARSAT Search And Rescue SATellite SARTS Switched Access Remote Test System (CSC-ATT) SAS Secure Access Service SAS Sequenced Answer Signal SAS Service Announcement System SAS Single Attach Station SAS Single Attachment Station (FDDI) SAS SNMP Applet Server SAS Software Application System SAS Statistical Analysis System SAS Subscriber Alerting Signal SAS Support and Administration Services SAS Surveillance Administration System SAS Switched Access Service SAS Switched Access System SASA Service and SIB Archiving SASC Service and SIB Cataloguing SASC Sports and Social Club SASCF Single Activation Selective Call Forwarding SASE Special Application Service Element SASE Specific Application Service Element SASE Standalone Synchronization Equipment SASH Stand-Alone Shell SASI Send Additional Setup Information message SASI Shugart Associates Standard Interface SASI Shugart Associates System Interface SASL Simple Authentication and Security Layer SASM Softools Advanced Macro Assembler SASO Saudi Arabian Standards Organization SASP Standard Automated Split-Referral SASUI Send Additional Setup Information message SAT Satellite Indicator SAT Satisfaction SAT Scenario Analysis Tool (RACE) SAT Services Architecture Team SAT Societe Anonyme de Telecommunications (F) SAT Software Agent Technology SAT Subscriber Access Termination SAT Supervisory Audio Tone SATAN Security Administrators Tool for Analyzing Networks SATM Selected Area Transfer Mode SATS Selected Abstract Test Suite SATT Strowger Automatic Toll Ticketing SATT Swiss Army Test Tool SAUG Software Architecture User Guide SAW Software Assembly Workbench SAW Surface Acoustic Wave SAWF Surface Acoustic Wave Filter SAWO Surface Acoustic Wave Oscillator SAX Small Automatic Exchange SB Broadband S-Interface SB ISO country code for Solomon Islands SB Scheduler Block SB Scoreboard SB Scroll Bar SB Security Base SB ServiceBuilder SB Signaling Battery SB Simple Borrowing SB Simultaneous Broadcast SB Soft Blocking SB Sound Blaster SB Special Billing SB Speech Bus SB Standby Indicator SB Sub-Band SB Subbundle SB Suboption Begin SB SuBstitution SB Suspend Both SB Suspend Both Origination and Termination SB Synchronization Burst SB System Busy SB1 Scrambled Binary 1s SBA Scene Balance Algorithms SBA Single-Bridged Arrangement SBA Small Business Access SBA Software Generated Group Blocking-Acknowledgement Message SBA SuperNode Billing Application SBAC Station Billing of Attendant-Handled Calls SB-ADPCM Sub-Band ADPCM SBAR Status Bar SBC S-Bus Circuit SBC S-Bus Interface Circuit SBC SCSI-3 Block Commands SBC Single Board Computer SBC Single Byte Command SBC Single-Board Computer SBC Southwestern Bell Communications SBC Southwestern Bell Corporation SBC Sub Band Coding SBC Subband Coding SBC Sub-Band Coding SBC Switching and Bridging Control SBC System Broadcast Channel S-BCCH Short Message Service Broadcast Control Channel SBCD System Busy Card SBCE STM Broadband Control Element SBC-HS Sub-band Coding Harmonic Scaling SBCS Single-Byte Character Set SBCS Source and Binary Control System SBDA Shared-Buffer Direct Access SBE Single Byte Extension SBE Small Business Edition SBE Software Build Environment SBE Super-twisted Birefringence Effect (Advanced LCD Flat-Panels) SBEC Subband Echo Canceler SBERR Single-Bit Error Rate SBF Sequential Block File Manager SBF Speech Bus Formatter SBG Small Business Group SBH Strip-Buried Heterostructure SBI Selective Barge-In SBIC SCSI Bus Interface Controller SBIC Shared-Bus Interface Controller SBID Scheduler Block Identifier SBIF Speech Bus Interface SBIP ServiceBuilder Intelligent Peripheral SBL Special Billing SBLF Set Busy Lamp Field SBLN Special Billing Number SBM Small Business Marketing SBM Successful Backward Set-Up Information Message SBM SuperNode Billing Manager SBN Special Billing Number SBNM Standards-Based Network Management SBP SCSI-3 Serial Bus Protocol SBPC Single Burst Per Carrier SBPT Single Burst Per Transmitter SBR Segment Base Register SBR Simple Borrowing from Richest SBR Source Browser Information file SBR Standby-Ready signal SBR Statistical Bit Rate SBR Subsystem Backup Routing message SBRC Subsystem Backup Routing Control SBS S/DMS Billing Server SBS Satellite Business System (USA) SBS Scheduler Block Scheduler SBS Scroll Bar Style SBS Server-Based Setup SBS Siemens Base Station System SBS Silicon Bilateral Switch SBS Small Business Server SBS Smart Battery Specification SBS Supernode Billing System SBSN ServiceBuilder Service Node SBSY System Busy SBT Services Base Team SBT six-bit transcode (IBM) SBT Spare Bits SBU Strategic Business Unit SBUR Software Blocking/Unblocking Reception SBUS Software Blocking/Unblocking Sending S-Bus Shorting Bus SBV Syntax-Based Videotex SBVP strict SBV Protocol test group SBX Small Business Exchange SBY Standby SC ISO country code for Republic of Seychelles SC Santa Clara Sc Scan SC Scanner SC Scenario Compiler SC Secondary Center SC Secondary Channel SC Sectional Center SC Select Code SC Send Common SC Sending Complete SC Sequence Count SC Service Centre (used for SMS) SC Service Channel SC Service Code SC Service Control SC Service Controller SC Session Control SC Shelf Controller SC Short Circuit SC Signaling Channel SC Signaling Controller SC Signaling Converter SC Signalling Capability SC Signalling Component SC Silicon Compilation SC Silicon Compiler SC Silk Covered SC Slot Controller SC Slow Channel SC Source Code SC Space Character SC Spacer Controller SC Special Connections SC Spectrum Compatible SC Speed Call SC Speed Calling SC Standard Components SC Steel Cored SC Steering Committee (EWOS) SC Stromberg-Carlson SC Structure Code SC Study Committee SC Sub-Committee SC Subnetwork Controller SC Subscriber Carrier SC Summary punch SC SuperCAMA SC Superimposed Current SC Supervisory Code SC Suppressed Carrier SC Switched Capacitor (Technology) SC Switching Center SC System Command SC U.S. postal code for South Carolina S-C Stromberg-Carlson SC/A Signal Convertor/Allotter SC/MP Single-Chip Microprocessor SC++ Symantec C++ SC1 Speed Calling 1-Digit SC1 Speed Calling Short List SC1BG Speed Calling, 1-Digit, Business Group List SC1CC Speed Calling, 1-Digit, Customer Controlled SC1D Speed Calling, 1-Digit Individual SC1NL Speed Calling 1-Digit Number List SC1SH Speed Calling 1-Digit Shared SC2 Speed Calling 2-Digit SC2 Speed Calling Long List (L30) SC2BG Speed Calling, 2-Digit, Business Group List SC2CC Speed Calling, 2-Digit, Customer Controlled SC2D Speed Calling, 2-Digit Individual SC2NL Speed Calling 2-Digit Number List SC2SH Speed Calling 2-Digit Shared SC2SZ 2-Digit Speed Calling Size SC3 Speed Calling Long List (L50) SCA Selected Call Appearance SCA Selective Call Acceptance SCA Service Call Administration SCA Service Change Agreement SCA Shared Coverage Area SCA Single Call Arrangement SCA Single Channel Adaptation SCA Single Connector Attachment SCA Software Capability Agreement SCA Standard Control Authority SCA Synchronous Communication Adaptor SCA System Change Analysis SCA Systems Connectivity Architecture (Timeplex) SCAAC Selective Call Acceptance Active/Inactive Status SCAACC Selective Call Acceptance Activate/Deactivate Access Codes SCAB Selective Call Acceptance Billing Records SCABACC Selective Call Acceptance Activate/Deactivate Business Group Acces s Code SCACI Selective Call Acceptance Confirmation Indication SCADA Supervisory Control and Data Acquisition SCAF Service Control Access Function SCAFS Switched Capacitor Filter Synthesis SCAI Small Computer Application Interface SCAI Switch-Computer Application(s) Interface SCALE Selective Call Acceptance List Editing SCALEACC Selective Call Acceptance List Editing Access Code SCALEBACC Selective Call Acceptance Business Group List Editing Access Code SCAM SCSI Configuration Auto Magically SCAM SCSI Configuration Automatically SCAM Service Common Application Model SCAM Services Common Analysis Model SCAMA Super Centralized Automatic Message Accounting SCAMFL Selective Call Acceptance Multiple Forwarding Limit SCAMIS Schedule Control and Maintenance IS (CSC-ATT) SCAMP Switched Capacitor Amplifier SCAMS Scanning Microwave Spectrometer SCAN Switched Circuit Automatic Network SCANL Selective Call Acceptance Number List SCANLS Selective Call Acceptance Number List Size SCANS Software Change Administration and Notification System SCAPIN Selective Call Acceptance Personal Identification Number SCAPINEA Selective Call Acceptance Personal Identification Number Entry Att empts SCAR SIMBA Commercial Alternative Realization SCARAB Submersible Craft Assisting Repair and Burial SCARC Selective Call Acceptance Restricted Control SCARCAM Selective Call Acceptance Restricted Control for Analog Member of EKTS SCARDN Selective Call Acceptance Remote Forwarding DN SCARNP Selective Call Acceptance Redirecting Party Number Presentation SCARRDN Selective Call Acceptance Restriction on Remote DN SCART Syndicat des constructeurs d'appareils radio récepteurs et téléviseurs ( France) SCAT Scan and Trigger Utility SCAT Selective Call Acceptance Toggle SCATS Sequentialy Controlled Automatic Transmitter Start SCATT Selective Call Acceptance Terminating Treatment SCB South Central Bell SCB String Control Byte SCB Subnetwork Control Block SCB System Configuration Block SCC SAT Color Code SCC Satellite Communications Controller SCC Satellite Control Centre SCC SCSI-3 Controller Commands SCC Secure Computing Corporation SCC Serial Communications Controller SCC Service Configuration Control SCC Service Control Customization SCC Signal Conversion Circuit SCC Signaling Conversion Circuit SCC Software Change Control SCC Software Control Category SCC Specialized Common Carrier SCC Standards Council of Canada SCC Station Controlled Conferencing SCC Station-Controlled Conference SCC Supercomputer Center SCC Supercomputing Center SCC SuperNode Combined Core cabinet SCC Switching Control Center SCC System Control Center SCC1 Software Control Category 1 SCCD/SU SMP-Created Service Data and SLP Update SCCE SCC Event Register SCCF Satellite Communication Control Facility SCCM SCC Mask Register SCCP Signalling Connection Control Part (SS7) SCCS SCC Status Register SCCS Source Code Control System SCCS Switching Control Center System SCCS Switching Control Center System (CSC-ATT) SCD Selective Cell Discard SCD Standard Color Display SCD Structured Chip Design (IC Design) SCD System Clock Disable SCDI Session Call Distribution Interface SCDL Software Components Description Library SCDM Services Common Domain Model SCDN Secondary DN SCDP Subcomponent Development Plan SCDS Simulation Continuous and Discrete Processes SCE Service Configuration Element SCE Service Control Entity SCE Service Creation Element (Hewlett Packard) SCE Service Creation Environment SCE Shore-Controlled Equaliser (Telecom. Sea-Cables) SCE Software Capability Evaluation SCE System Capacity Engineering SCEAF Service Creation Environment Agent Function SCEC SCE Conversion SCECE SCE Capability Expansion SCEF Service Creation Environment Function SCEN ISDN Scenarios Administrative View SCEP Service Creation Environment Point SCESC SCE-to-SCE System Consistency SCF Selective Call Forwarding (supplementary service) SCF Sequential Character File Manager SCF Service Control Function (IN term) SCF Shared Channel Feedback SCF Signaling Control Function SCF Software Change Form SCF Switched Capacitor Filter SCF Synchronization and Coordination Function SCF(M) Service Control Function (Mobile) SCFAC Selective Call Forwarding Access Code SCFAC Selective Call Forwarding Active/Inactive Status SCFB Selective Call Forwarding Management Events Billing Records SCFCI Selective Call Forwarding Confirmation Indication SCFDN Selective Call Forwarding Directory Number SCFDN Selective Call Forwarding Remote Directory Number 1 SCFDN2 Selective Call Forwarding Remote Directory Number 2 SCFDN3 Selective Call Forwarding Remote Directory Number 3 SCFDN4 Selective Call Forwarding Remote Directory Number 4 SCFL Source Coupled FET Logic SCFLE Selective Call Forwarding List Editing SCFLEACC Selective Call Forwarding List Editing Access Code SCFM Subcarrier Frequency Modulation SCFMFL Selective Call Forwarding Multiple Forwarding Limit SCFMNL Maximum Number of Selective Call Forwarding Lists SCFNL Selective Call Forwarding Number List SCFNL Selective Call Forwarding Number List 1 SCFNL1ACC Selective Call Forwarding List 1 Access Codes SCFNL1T Selective Call Forwarding Number List 1 Toggle SCFNL2 Selective Call Forwarding Number List 2 SCFNL2ACC Selective Call Forwarding List 2 Access Codes SCFNL2T Selective Call Forwarding Number List 2 Toggle SCFNL3 Selective Call Forwarding Number List 3 SCFNL3ACC Selective Call Forwarding List 3 Access Codes SCFNL3T Selective Call Forwarding Number List 3 Toggle SCFNL4 Selective Call Forwarding Number List 4 SCFNL4ACC Selective Call Forwarding List 4 Access Codes SCFNL4T Selective Call Forwarding Number List 4 Toggle SCFNLS Selective Call Forwarding Number List Size SCFQ Self-Clocked Fair Queuing SCFRC Selective Call Forwarding Restricted Control SCFRCAM Selective Call Forwarding Restricted Control for Analog Member of EKTS SCFRING Selective Call Forwarding Reminder Notification Suppression SCFRNP Selective Call Forwarding Redirecting Party Number Presentation SCFRRDN Selective Call Forwarding Restriction on Remote DN SCG Semiconductor Components Group SCG Software Concepts Group SCG System Clock Generator SCGA Software Carrier Group Alarm SCH Schedule File SCH Seizures per Circuit per Hour SCH Seperate Confinement Heterostructure (Cavity Laser) SCH Serial Channel SCH Service Circuit Handler SCH Sub-Carrier/Horizontal (Phase, Colour TV) SCH Synchronization Channel SCHED Scheduled sci Newsgroups on science SCI Scalable Coherent Interface SCI Sci-Fi Channel SCI SDM Command Interpreter SCI Serial Communication Interface SCI Serial Communications Interface SCI Small Computer Interface SCI Subscriber Carrier Interface SCIS Service Cost Information System SCIT Special Circuit Interface T SCIT Steering Committee on Information Technology SCK A Static Cipher Key SCL Shelf Console Link SCL Simulation Control Language SCL Speed Call List SCL Speed Call Long SCL Speed Calling SCL Speed Calling List SCL Speed Calling Long List SCLC SCCP Connectionless Control SCLLI Short Common Language Location Identifier S-CLNP Specific Connectionless Network Protocol S-CLNS Specific Connectionless Network Service SCLPA Single Channel Linear Power Amplifier SCM SCC Mode Register SCM Selected Communications Mode SCM Selective Call Management SCM Selective Call Messaging SCM Service Connection Manager SCM Service Control Manager SCM Set Conducted Mode SCM Single Carrier Modulation SCM Single-Channel Modem SCM Software Call Model SCM Software Change Management SCM Software Configuration Management SCM Station Class Mark SCM Subcarrier Multiplexing SCM Subscriber Carrier Module SCM Subsystem Communication Model SCM Supply Chain Management SCM Supressed Carrier Modulation SCMA Subcarrier Multiple Access SCME Service Control Management Entity SCMG SCCP Management SCML Software Configuration Management Library SCMP Series Completion SCMP Simple Connection Management Protocol SCMS Serial Copy Management System (DAT) SCM-U Subscriber Carrier Module-Urban SCN Scan SCN Self-Compensating Network SCN Service Circuit Node SCN State Change Notification SCN Sub-Channel Number SCN Switched Circuit Network SCO Santa Cruz Operation SCO Short Called Off-Hook SCO SOS Command Object SCOC SCCP Connection Oriented Control SCOCS Selective Class of Call Screening SCOCS Selective Class of Call Screening Selection SCOCSBN Selective Class of Call Screening Service Selection Billing Number SCOCSCS SCOCS Class of Service SCOCSID SCOCS Service Identification SCOCSSFG SCOCS Service Parameter/SFG Association SCODL Scan Conversion Object Description Language SCOF Selective Control of Facilities SCON SCC Configuration Register SCON Signaling Configuration SCOPE Simple Communications Programming Environment SCOT Steering Committee on Telecommunications SCOTICE Scotland-Iceland submarine cable SCOTS Surveillance and Control of Transmission Systems SCP Save Cursor Position SCP Secondary Cross-connection Point (Telecom) SCP Selectable Code Point SCP Serial Communication Port SCP Serial Control Port SCP Service Control Point (IN term) SCP Shelf Control Processor SCP Signaling Control Protocol SCP Stromberg-Carlson Practice SCP Switch Control Processor SCP System Configuration Pointer SCP System Control Point SCP System Control Programme SCP2 Service Control Point 2 SCPC Single Channel Per Carrier SCPD Maintenance Scratchpad SCPII Second Generation DMS SCP SCPN Screening of Calling Party Number SCPS Synchronous Composite Packet Switching SCPT single carrier per transponder SCPT Single Channel Per Transponder SCR Saddle Coil Resonator (Medical) SCR Screen Saver file SCR SCReening (supplementary service) SCR Selective Call Rejection SCR Selective Charge Recording SCR Silicon Controlled Rectifier SCR Standard Context Routing SCR Static Conformance Requirement(s) SCR Static Conformance Review SCR Sustainable Cell Rate SCR Sustained Cell Rate SCR System Change Request SCR System Clock Reference SCR System Command Register SCR System Control Register SCRA Small Call Reacting Apparatus SCRAC Selective Call Rejection Active/Inactive Status SCRACC Selective Call Rejection Activate/Deactivate Access Codes SCRB Selective Call Rejection Billing Records SCRC SCCP Routing Control SCRCAR Selective Call Rejection Call Attempts Rejected SCRJ Selective Call Rejection SCRLE Selective Call Rejection List Editing SCRLEACC Selective Call Rejection List Editing Access Code SCRN SCReeM SCRNL Selective Call Rejection Number List SCRNLS Selective Call Rejection Number List Size SCRRC Selective Call Rejection Restricted Control SCRRCAM Selective Call Rejection Restricted Control for Analog Member of E KTS SCRT Selective Call Rejection Toggle SCS Secondary Clear to Send SCS Sequential Channel Search SCS Service Consumer System SCS Service Creation System SCS Siemens Communications Systems SCS Signal Collection System SCS Silicon Controlled Switch SCS Single Change Supplement SCS Single Conversion System SCS SNA Character String SCS Software Control System SCS Speed Call Short SCS Speed Calling Short List SCS Structured Connectivity Solution SCS Subcomponent Specification SCS Submarine Cable Systems Inc. (KDD) SCS System Conformance Statement SCSA Signal Computing System Architecture SCSA Standard Consolidated Statistical Area SCSI Small Computer System Interface SCSI-2 Small Computer System Interface-2 SCSI-3 Small Computer System Interface-3 SCSI-FCP SCSI Fibre Channel Protocol SCSM Service Control Function Call State Model SCSP Server Cache Synchronization Protocol SCSS Special Connection Special Service SCSS Special Connection Special Services SCT Single Chip Transceiver SCT Subscriber Carrier Terminal SCTA Santa Cruz Technology Alliance SCTE Society of Cable Television Engineers SCTO Stalled Call Timed Out SCTR System Conformance Test Report (ISO 9646) SCTR System Control Register SCU Service Circuit Unit SCU Service Control Unit SCU Signaling Channel User SCU Speed Call Universal SCU Speed Call User SCU Speed Calling Universal SCU Speed Calling User SCU SRU Control Unit SCU Subscriber Channel Unit SCU System-Control signal unit SCUAF Service Control User Access Function SCUAF Service Control User Agent Function SCV Section Coding Violation(s) SCVFT Single Channel Voice Frequency Telegraphy SCW Selective Call Waiting SCW Setup Computer Wizard SCWID Spontaneous Call Waiting Identification SD ISO country code for Democratic Republic of the Sudan SD Schematic Diagram SD Schematic Drawing SD Scroll Down SD Secure Descriptor (Windows) SD Send Data SD Send Digits SD Sequenced Data SD Sequential Disk SD Service Data SD Service Desk SD Service Directory SD Service Disruption SD Service Distribution SD Signal Degrade SD Signal Distribution SD Signal Distributor SD Single Density SD Single Destinational SD Single Digit SD Software Development SD Software Distributor SD Speech Detector SD Standard Deviation SD Start Delimiter SD Starting Delimiter SD State Dependent SD Static Data SD Station Detail Records SD Storage Device SD Structural Diagram SD Structured Design SD Super Density SD Super Disk SD Switching Delay SD U.S. postal code for South Dakota S-D Signal-to-Distortion SDA SCSI Disk Array SDA Session Distribution Algorithm SDA Single Digit Absorbing SDA Source and Detector Assembly SDA Swappable Data Area SDA Synchronous Data Adapter SDA System Design Authority SDAI Standard Data Access Interface SDB Services Data Base SDB Set Data Block SDB Supplemental Data Block SDB Switched Digital Broadcast sdb Symbolic Debugger SDBAS Switched Digital Broadband Access System SDC Server Display Control SDC Subsequent Digit Collection SDC Switched Digital Capability SDC Syntax and Data Checking SDCC Section DCC SDCCH Stand-alone Dedicated Control CHannel SDCCH/4 Stand-alone Dedicated Control CHannel/4 SDCCH/8 Stand-alone Dedicated Control CHannel/8 SDCP Service Design Capture Process SDCR Supplemental Digit Collection Resource SDCS Satellite Digital Communication System SDCU Satellite Delay Compensation Unit SDD Single Digit Dialing SDD Software Design Document SDD Space-Division Duplexing SDD Speech Direction Detector SDD System Dependent Data SDDA Source Defined Display Area SDDF Subscriber Digital Distributing Frame SDDM System Dependent Data Management SDDN Software Defined Data Network (AT&T) SDDN-I Software Defined Data Network- International SDE Software Development Environment SDE Submission and Delivery Entity (X.400/MHS) SDE Synchronization Distribution Expander SDE System Development Environment SDEA Supported Entity Absent SDEE Supported Entity Exists SDES Source Description SDEV Smoothed Deviation SDF Satellite Distribution Frame SDF Service Data Function (IN term) SDF Service Definition Function SDF Signaling Data Function SDF Standard Delay Format SDF Structured Directory Format SDF Structured Display File SDF Supergroup Distribution Frame SDF(M) Service Data Function (Mobile) SDFP Service Data Function Point SDFP Service Definition Function Point SDFP Single Destination Freephone SDG Service Design Guidelines SDG Signal Distribution Group SDG System Dependence Graph SDGW Services Design Guidelines Workshop SDH Static Data Handler SDH Synchronous Digital Hierarchy SDHT Selectively-Doped Heterojunction Transistor SDI Sense Data Included Indicator SDI Serial Data Interface SDI Serial Data-link Interface SDI serial digital interface SDI Simplex DRU Interface SDI Single Document Interface SDI Software Developer's Interface SDI Software Development Interface SDI Strategic Defence Initiative (Star-War) SDIF SGML Document Interchange Format SDIP SCSI Device Interface Paddle Board SDK Service Development Kit SDK Software Developer's Kit SDK Software Development Kit SDKJ Software Development Kit for Java SDL Functional Specification and Description Language SDL Shielded Data Link SDL Signaling Data Link SDL Specification Description Language SDL Stationary Data Link SDL Systems Definition Language SDL/GR SDL Graphical Representation SDL/PR SDL Phrase Representation SDLC SNA Data Link Control SDLC Synchronous Data Link Control procedure, SDLC Synchronous Data-Link Control (BOP, IBM Inc.) SDLC Systems Development Life Cycle SDM Service Domain Model SDM Space Division Multiplex SDM Space Division Multiplexer SDM Space Division Multiplexing SDM Subrate Data Multiplexing SDM SuperNode Data Manager SDM Surveillance Data Manager SDM System Definition Manual SDM/FT SDM Fault Tolerant SDMA Serial Direct Memory Access SDMA Space Division Multiple Access SDMA Spatial-Division Multiple Access SDMB Supernode Data Manager Billing SDMC Single Destination Mass Calling SDMF Single Data Message Format SDMP Services Development Management Plan SDMS SONET DMS S-DMS SONET DMS SDN Secondary Directory Number SDN Shared Directory Number SDN Software Defined Network SDN Subscriber's Directory Number SDN Switched Digital Network SDN Synchronized Digital Network SDN Synonym Directory Number SDNA Set Up Directory Number Attributes SDNC Status, Data, Not Consistent SDNP Shared DNIC Numbering Plan SDNS Secure Data Network System SDNS Software Defined Network Service SDNTX Selective Do Not Transmit SDO Semantic Data Object SDO Standards Development Organization SDO Standards-Developing Organization SDOC Selective Dynamic Overload Control SDOC Software Document SDP Scenario Design Paradigm SDP Service Data Point (IN term) SDP Session Description Protocol SDP Signal Distribution Panel SDP Simple Device Protocol SDP Smart Dual Port Random Access Memory (Hitachi Inc.) SDP Software Design Process SDP Software Development Plan SDP Software Development Process SDP STP Datagram Protocol SDP Supplementary Dial Plan SDPC Single Destination Premium Charging SDPO Sleeve Dial Pulse Originating SDR Service Database Repository SDR Speaker-Dependent Recognition SDR Special Drawing Right SDR Supplier Data Report SDRAM Synchronous DRAM SD-ROM Super-Density CD-ROM SDRP Source Demand Routing Protocol SDRSS Speaker-Dependent Recognition Service Supervisor SDS Satellite Data System SDS Schema/Subschema Definition Set SDS SDH Data Subnetwork SDS Signal Dependent Stereo (control) SDS Software Development System SDS Software Disk Striping SDS Software Distribution Services SDS Software Distribution Site SDS Special Delivery Service SDS Specific Digit String SDS Speech Digit Signalling SDS Static Data Store SDS Station Detail Server SDS Switched Digital Service SDS System Developer's Seat SDS1SO SWF-DS1 Selection Order SDS3 Simplified DS3 SDSAF Switched Digital Services Applications Forum SDSC Single Destination Split Charging SDSL Single Line Digital Subscriber Line SDSL Single-Pair Digital Subscriber Line SDSL Symmetric Digital Subscriber Line SDSL Symmetrical Digital Subscriber Line SDSL Symmetrical Digital Subscriber Loop SDSS Software Development Support System SDT SDL Design Tool SDT SDL Development Tool SDT Serial Data Transfer SDT Service Design Team SDT Special Dial Tone SDT Start Data Traffic SDT Static Data Table SDT Structured Data Transfer SDT Stutter Dial Tone SDTA Stepdown Transforner Adapter SDTE Synchronous Data Terminal Equipment SDTP Serial Data Transport Protocol SDTP Services Designer Test Procedures SDTP System Default Terminal Profile SDTR Serial Data Transmitter/Receiver SD-TSE State-Dependent Tentative Symbol Estimation SDTV standard definition television SDTV Standard-Definition Television SDU Selection and Distribution Unit SDU Service Data Unit SDU Signal Distribution Unit SDU SMDS Data Unit SDU Software Distribution Utilities (HP) SDU Source Data Unit SDUN Single Destination Universal Number SDUP System Default User Profile SDV Switched Digital Video SDVB Switched Digital Video Broadcast SDVN Switched Digital Video Network SDW Segment Descriptor Word SDX Storage Data Acceleration SDY Line Study se Internet country code for Sweden SE ISO country code for Kingdom of Sweden SE SCSI/Ethernet SE SCSI/Ethernet Adaptor SE Segment End SE Sending Entity SE SErial call (supplementary service) SE Service Element SE Session Exchange message SE Shared Explicit SE Signalling Entity SE Significant Event SE Simple Element SE Single-Ended SE Software Engineering SE Source Explorer SE Southeast SE Spectrum Engineering (CEPT) SE Standard Edition SE State Event SE Status Enquiry SE Structure Element SE Suboption End SE Support Entity SE Switch Element SE Switching Element SE System Engineer SE System Enhanced SE System Enhancement SE Systems Engineering S-E Signal-to-Echo SE1 SCSI/Ethernet, Type 1 SEA Society for Electronic Access SEA Standard Extended Attribute SEAC Signaling, Engineering, and Administration Center SEAL Simple and Efficient Adaptation Layer SEAL Software Engineering Assurance Laboratory SEALCUR Sealing Current SEAN Signaling Entity for ATM Networks SEAS Signaling Engineering and Administration System SEB System Engineering Bulletin SEC SDH Equipment Clock sec Second SEC Secondary SEC Security SEC Security Code SEC Security Screening SEC Service Evaluation Center SEC Service Execution Component SeC Session Control SEC Single Error Correction SEC Single-Edge Connect SEC Single-Edge Contact SEC Single-Ended Connection SEC Software Engineering Center SEC Switching Equipment Congestion message SEC Switching Equipment Congestion signal SEC Synchronous Equipment Clock SECAB Small Exchange Carrier Access Billing SECAM Sequential Chrominance and Memory SECAM Sequential Coleur Avec Memoire SECAM Sequentiel Couleur Avec Memoire SECAM SequentiellE Couleur Avec Memoire (French analogue TV system) SECB Severely Errored Cell Block SECBR Severely Errored Cell Block Ratio SECO Secondary Engine CutOff SECT Section SECT Sectional Center SECT Service Evaluation Circuit SECU Security SED SEDOS ESTELLE Demonstrator SED Service Element Design SED Stream Editor SED Surface-Conduction Emitter Display SED Systems Engineering Division SEDOS Software Environment for the Design of Open distributed Systems SEE Service de l'Energie de l'Etat SEE Service Extension Element SEE Software Engineering Environment SEE Systems Equipment Engineer SEED Self Electro-optic Effect Device (IC) SEER System Event and Error Reports SEF Severely Errored Frame SEF Support Entity Function SEFL Single-End Fault Locating SEFS Severeley Errored Frame Seconds SEG Segment SEG Segmentation message SEG Special-Effects Generator SEGA Super Enhanced Graphic Adapter (PC) SEGCT Segment Coverage Tool SEH Structured Exception Handling SEI Service Evaluation Interface SEI Software Engineering Institute SEK Svenska Elektriska Kommissionen SEK Svenska Elektrotekniska Kommissionen SEL Alcatel (D) SEL Selector SEL Standard Electrik Lorenz SEL Surface-Emitting Laser SELCAL SELective CALling (radio) SELCALL SELective CALLing SELD Service Element Level Design SELP Sum-Excited Linear Prediction SELV Safety Extra Low Voltage SEM Scanning Electron Microscope SEM Scanning Electron Microscopy SeM Security Management SEM Select Edit Extent Mode SEM Service Element Design Model SEM Service Extension Manager SEM Standard Electronic Module SEM Station Engineering Manual SEM Super Element Manager SEMF Synchronous Equipment Management Function SEMI Semiconductor Equipment and Materials International SEMKO Swedish Institute for Testing and Approval of Electrical Equipment (S) SEMS Switching Element Management System SEN Service Netze (Deutsche Telekom organization for network configura tion) SENDDD Send Dialed Digits SENDTD Send Translated Digits SEP SEParation SEP SEParation character SEP Sequential Exchange Protocol SEP Service Evaluation Program SEP Service Execution Platform SEP Service Extension Point SEP Signaling End Point SEPG Software Engineering Process Group SEPP Secure Electronic Payment Process SEPP Secure Electronic Payment Protocol SEPT Systemexterne Pruftechnik (External System Test Technology) SEPT Systemunabhangige Externe Pruftechnik fur Telefonanschlusse (system independent external test equipment for lines) SEQ Sequence Number SEQ Sequencer SEQ Support Equipment SEQNO Sequence Number SER Attendant Console Serial Calling SER Schedule Efficiency Ratio SER Serial Mode SER Series Completion SER Service Element Reference SER Service Event Registration SER Soft Error Rate SER Switch Event Record SER Symbol Error Rate SERC Science and Engineering Research Council SERC Serial Calling SERDN Series Completion Forwarding Directory Number SERTYP Series Completion Hunting Type SERV Service Base SERV Service message SERV ACK Service Acknowledge message SERVORD Service Order System SES Satellite Earth Station SES Satellite Earth Stations and Systems (ETSI TC) SES Scientific and Engineering Software SES Service Evaluation System SES Severely Errored Second(s) SES Ship Earth Station SES Single-Ended Supervision SES Societe Europeenne des Satellites SES Source End Station SES Source End System SES Special Exchange Service SESAME Subscriber Enhanced Services Made Easy SESC Software Engineering Standards Committee SESD Severely Errored Seconds Daily Threshold SESD Software Engineering Systems Division (Hewlett Packard) SESE Security Exchange Service Element SESH Severely Errored Seconds Hourly Threshold SESKO Finnish Electrotechnical Standards Associatiom SESR Severely Errored Second Ratio SESS Session SET Satellites Europeens de Telecommunication (CEPT) SET Secure Electronic Transactions SET Secure Encryption Transaction SET Secure Exchange Transaction SET Single-Electron Transistor SET Software Engineering Technology SET Software-Emulated Terminal SET Standard Exchange Transfer SET System Emulation Testing SETI Search for Extra-Terrestrial Intelligence SETM British Standard Method for Specifying Electronic Typographic Mark up SETPH Set Packet Handler X.25 Service Parameters SETS Selected Executable Test Suite SETUP Setup message SETUP ACK Setup Acknowledge message SEU Signal Extraction Unit SEU Single-Event Upset (Radiation Hardened IC, Military Electronics) SEU Source Entry Utility SEU Systems Engineering University SEV Schweizerischer Elektrotechnischer Verein (CH) SEVM Switching Element Virtual Machine SEx SCSI/Ethernet, Type x SF Security Function SF Select Facility point in call SF Select Frequency SF Service Feature SF Services and Facilities (CEPT) SF Sign Flag SF Signal Fail SF Single Frequency SF Stack Fault SF Status Field SF Store File SF Subscriber Feature SF Super Frame SF Super Frames SF Superframe SF/X Special Effects SFB Sir Francis Bacon SFB Standard Functional Block SFBM Shared Frame Buffer Memory SFC Single Functional Call SFC Source Function Code SFC Switch Fabric Card SFD simple formattable document (X.400/MHS) SFD Start Frame Delimiter SFD Start of Frame Delimiter SFDEV Store File Device SFDEV System File Device SFDL Structure and Function Description Language SFDR Spurious Free Dynamic Range SFE Switch Front End SFET Synchronous Frequency Encoding Technique SFF Small Forms Factors SFF Switch Feature Forum SFG Simulated Facilities Group SFG Simulated Facility Group SFG Simulated Facility Groups SFG/C-I ISDN Simulated Facility Group for Circuit-Mode Calls SFG/P-I ISDN Simulated Facility Group for Packet-Mode Calls SFGBC Simulated Facilities Group Bearer Capabilities SFGF Sliding-Frequency, Guiding Filter SFG-I ISDN Simulated Facility Group SFGNLC Simulated Facilities Group Packet Mode, Number of Logical Channels SFGPM Simulated Facility Group, Packet Mode SFGTC Simulated Facilities Group for Packet Mode, Throughput Class SFGTR Simulated Facilities Group for Packet Mode, Traffic Rate SFGTYP Simulated Facilities Group Type SFH Slow Frequency Hopping SFI MDII: Signaling Network Failure, Incoming Call SFI Secondary File Index SFI Service Feature Indicator SFIB Syndicat Fabricants ensembles Informatique/Bureautique SFIP Shadow Fetched Instruction Pointer SFIT Software Fault Insertion Testing SFL Sequential Forwarding Limit SFL Symbolic Flowchart Language SFM Switch Fabric Module SFN Single-Frequency Network SFNOI Second Further Notice of Inquiry SFO MDII: Signaling Network Failure, Outgoing Call SFP Super Frame Pattern SFPL Source Follower Pull-Up Logic SFR Single Frequency Reuse SFRL Semi-Fully Restricted Line SFRZ Shadow Freeze Sfrz Shadow-Freeze SFS Shadowed File System SFS Single-Frequency Signaling SFS Special Facility Selection SFS Start of Frame Sequence SFS Suomen Finland Standardisoimislutto (FL institute) SFT Secure File Transfer SFT System Fault Tolerance SFT System Fault Tolerant SFT System File Table SFTP Simple File Transfer Protocol (TCP/IP-DoD) SFTSS Standard Frequency and Time Signal Satellite SFU Special Function Unit SFU Status Fill-In Unit SFU Store and Forward Unit SFVN Secure Fast Virtual Networking SFW Service Framework SFX Sound Effects SFX Special Effects SFX Suffix SG ISO country code for Republic of Singapore SG Secretariat General (CENELEC) SG Signal Ground SG Signaling Ground SG Specific Gravity SG Steering Group SG Stop-Go SG Study Group (ITU-T) SG Supergroup SG SuperGroup SGA Software Group Blocking Acknowledgment Signal SGB Software Generated Group Blocking Message SGB Software Group Blocking Signal SGC SCSI-3 Graphics Commands SGC Standard Graphics Connect SGC Supergroup Connector SGD Signaling Ground SGDF Supergroup Distribution Frame SGEO Supported Entity Outage SGFS Special Group on Functional Standardization SGI Segment Information SGI Silicon Graphics Inc. SGI Subgroup Identifier SGID Set Group ID SGM Segmentation Message SGM SeGmentation Message SGML Standard Generalized Markup Language SGML Standard Generalized Markup Language SGMP Simple Gateway Monitoring Protocol (TCP/IP-DoD) SGNT Special Grade Network Trunk SGO Silicon Graphics Object SGR Select Graphic Rendition SGR Set Graphic Rendition SGRAM Synchronous Graphics RAM SGS Software Generation System SGSN Serving GSN SGT SeGment Table SGTE SuperGroup Translating Equipment SGTYP Simulated Facility Group Type SGU Software Generated Group Unblocking Message SGU Software Group Unblocking Signal SGW Service Gateway sh Bourne Shell SH ISO country code for SH Send Hub SH Server Host SH Session Header sh Shell SH Short Haul SH Start-of-Heading SH Stop Hunt SH Supervisor Host SH Switch Hook SH1 Shared Speed Calling, 1-Digit SH1CC Shared Speed Calling, 1-Digit, Customer Controlled SH2 Shared Speed Calling, 2-Digit SH2CC Shared Speed Calling, 2-Digit, Customer Controlled SHA SDM High Availability SHA Secure Hash Algorithm shab Show Acronyms/Abbreviations SHAPE Sub-Half Micron CMOS Process for European Users SHARP Self-Healing Alternate Route Protection SHASET Stop Hunt Application Set SHB Sharing with Bias SHCB Simple Hybrid Channel Borrowing SHCT Stop Hunt Control Terminals SHCTANL Stop Hunt Control Per Analog Terminal SHCTTSP Stop Hunt Control Terminal Per TSP SHD Super-High-Definition SHEFA Shetland Islands-Faero Islands submarine cable SHF Super High Frequency (3...30 GHz) SHFWSC Switch Hook Flash With Specified Code SHG Segmented HyperGraphic SHG-I ISDN Hunting Subgroup SHIC Software/Hardware Inventory Collector SHK Stop Hunt Key SHKAM Stop Hunt Key for Analog Member of EKTS SHKPT Stop Hunt Key Point SHKPTAM Stop Hunt Key Point for Analog Member of EKTS SHLR Standalone Home Location Register SHM Shared Memory Extension to X Window System SHM short hold mode (SNA) SHM/MPS Short Hold Mode/Multiple Port Sharing (OSI-SNA) SHN Self-Healing Network SHO Showtime SHO Soft Handover SHOE Simple HTML Ontology Extensions SHOT Selective Handover for Traffic Balance SHR Self-Healing Ring SHR Shared SHR Shared Historical Record SHR Shared Layer SHS Secure Hash Standard SHS Select Horizontal Spacing SHS1 Stop Hunt Set 1 SHS1D Stop Hunt Set 1 CMD SHS1V Stop Hunt Set 1 VI SHS2 Stop Hunt Set 2 SHS2D Stop Hunt Set 2 CMD SHS2V Stop Hunt Set 2 VI SHS3 Stop Hunt Set 3 SHS3D Stop Hunt Set 3 CMD SHS3V Stop Hunt Set 3 VI SHS4 Stop Hunt Set 4 SHS4D Stop Hunt Set 4 CMD SHS4V Stop Hunt Set 4 VI SHTTP Secure Hypertext Transfer Protocol S-HTTP Secure Hypertext Transfer Protocol SHU Stop Hunt SHV Standard High-Volume SI International System of Units SI ISO country code for Slovenia SI Screening Indentification SI Screening Indicator SI Serial Interconnect SI Service Identification SI Service Indication SI Service Indicator SI Service Information SI Service Initiation SI Service Interworking SI Session Protocol Data Unit Identifier SI Setup Information SI Shift In SI Signaling Rate Indicator Si Silicon SI Single Inheritance SI Software Indicator SI Software Integration SI Source Index SI SPDU Identifier SI Special Instruction SI Speech Interpolation SI Standard Interface SI State Independent SI Statutory Instrument (UK legislation) SI Storage-Immediate SI Subscriber Identification SI Subsystem Interface SI superimpose SI Supplementary Information (SIA) SI Synchronization Information SI System Index SI System Information SI System Integrator SI System Integrity SI système international d'unités, International Measuring System (metric ) SI Systems Integrator SI/OC Serial Input/Output Channel SI0 Sequenced Information 0 SI1 Sequenced Information 1 SIA Semiconductor Industry Association SIA Serial Interface Adapter SIA Service Interface Area SIA Special Intercept Announcement SIA Supplementary Information A SIABLK Special Intercept Announcement- Blocked Calls SIAF Service Indicator Associated Field SIA-I ISDN Special Intercept Announcements SIANC Special Intercept Announcement- Incoming Calls SI-ATMR Switch-Interconnected ATMR SIAUDF Special Intercept Announcement- Undefined Code SIB Scale, Index, Base SIB Screen Image Buffer SIB Service-Independent Block SIB Service-Independent Building Block SIB Status Indication "Busy" SIB System Integration Block SIBB Service Independent Building Block SIBCC SIB Configuration Control SIBD SIB Distribution SIBH Semi-Insulated Buried Heterostructure SIC Semantic Integrity Constraint SIC Service Identification Code SIC Service Indicator Code SIC Service Interaction Context SiC Silicone Carbide SIC S-Interface Circuit SIC Specific Inductive Capacity (Dielectric Constant) SIC Standard Implementations Committee SIC Station Identification Code SIC System Information Channel S-ICI SONET Inter-Carrier Interface SICL Standard Instrument Control Library SICMS Semantic Integrity Constraints Management Services SICS Swedish Institute of Computer Science SID SCCS Identification SID Secure ID SID Security Identifier SID Segment Identifier SID Sensor Identification SID Service Identification SID Service Identifier SID Service Instance Data SID Service Instantiation Denial SID Session Identifier SID Signaling Identifier SID Silence Descriptor SID Silence Information Descriptor SID Silence Insertion Descriptor SID Source Identification Parameter SID Source Identifier SID Station Identification SID Sudden Ionospheric Disturbance (Short Wave Propagation) SID System Identification SID System Identifier SIDF System Independent Data Format SIDM Single Integration Delta Modulation SIDX Service Index SIE Services Interaction Environment SIE Signal Information Element SIE Simple Imaging Extension SIE Status Indication "Emergency Alignment" SIF Signaling Information Field SIF Signalling Information Field SIF SONET Interoperability Forum SIF Source Input Format SIF Standard InterFace SIF Status Information Frame SIF Switch Interface SIFS Short Interframe Space SIFT Sender-Initiated File Transfer SIFT Service Interaction Focus Team SIFT Standard Information Filtering Tool SIG Service Implementation Guide SIG Signal SIG SIGnal between LT and N SIG SIGnal Information Element SIG Signaling SIG Signaling Channel SIG SIGnature Element SIG SMDS Interest Group SIG Special Interest Group (NIST) SIGCHI Special Interest Group on Computer-Human Interaction SiGe Silicon-Germanium SIGGRAPH Special Interest Group on computer GRAPHics SIGINT Signal Intelligence SIGMAN Signaling Manager SII Server Instance Identifier SII Standards Insitution of Israel SII Static Invocation Interface SIKO Sicherheitskonzept SIKOS Simulation Kontinuierlicher Systeme (Siemens) SIL Silence SIL Single In-Line (IC Package) SIL Solid Immersion Lens SIL Speech Interference Level (Accoustics) SILC Selective Incoming Load Control SILEX Semiconductor-laser Inter- EXperiment (ESA) SIM Serial Interface Module SIM Service Information Message SIM Service Initiation Manager SIM Set Initialization Mode (HDLC) SIM Signaling Information Manager SIM STEAM Issues Meeting SIM Strategic Interface Management SIM Subscriber Identification Module (GSM) SIM Subscriber Identity Module SIM Synchronous Interface Module SIM System Integration Module SIM System Integrity Monitor SIM System Interface Module SIMASK Serial Interface Mask Register SIMBA SLIF-S & ITM Multiple Bridge Adapter SIMD Single-Instruction Multiple Data (Pipeline Processors) SIME Subscriber Installation Maintenance Entity SIMM Signed Immediate Value SIMM Single In-line Modular Memory (Package) SIMODE Serial Interface Mode Register SIMS Secondary Ion Mass Spectrometer SIMS Synchronization, Interaction, and Maintenance System SIMULA Simulation Language SIN British Telecom Suppliers' Information Notes SIN Service Indication SIN Service Indicator SIN Ships in the Night SiN Silicon Nitride SIN Status Indication "Normal Alignment" SIN System Installation Number SINAD SIgnal, Noise And Distortion (to noise and distortion ratio) SIND Service Indication SINPFEMO Signal Interference Noise Propagation Overall SINPO Signal Interference Noise Propagation Overall SINR Signal-to-Interference-plus-Noise Ratio SIO Scientific or Industrial Organization SIO Serial Input/Output SIO Service Information Field SIO Service Information Octet SIO Start I/O SIO Status Indication "Out of Alignment" SIOA Status Indication "Out of Alignment" SIOS Status Indication "Out of Service" SIOV Silicon-Oxide Varistor SIP SCSI Interface Processor SIP SCSI-3 Interlocked Protocol SIP Service Initiation Packet SIP Session Initiation Protocol SIP Simple Internet Protocol SIP Single In-Line Package SIP Single In-line Package SIP SMDS Interface Protocol SIP Societa Italiana per l'Esercizio delle Telecommunicazione, P.A. SIP Streamlined Instruction Processor SIP Subscriber Interface Protocol SIP Supplementary Information Presentation (supplementary service) SIPC Simply Interactive PC SIPC SOS Inter-Process Communication SIPO Serial-In Parallel-Out SIPO Status Indication "Processor Outage" SIPP Simple Internet Protocol Plus SIPP Single In-Line Pin Package SIR Selective Information Retrieval SIR Serial Infrared SIR Signal-to-Interference Ratio SIR Software Integration and Release SIR Speaker-Independent Recognition SIR Submission Information Rate SIR Surface Insulation Resistance SIR Sustained Information Rate SIRREQ Software Integration and Release Request SIS Semiconductor/Isolator/Semiconductor (IC Technology) SIS Sound-In-Synchronisation (Television) SIS Southern Information Systems, Inc. SIS Standardiseringskommissionen Institut Sverige (S) SIS Structural Interaction Service SIS Structure Information Store (OSI/VT/TOP) SIS Structured Interaction Service SIS Structured Interaction Services SIS Structured Interaction System SISD Single-Instruction Single Data SISIR Singapore Institute of Standards and Industrial Research SISO Serial-In Serial-Out SISRIF Still Image, Sound and Related Information Format SIT Self-Initializing Terminal SIT Service Information Transport SIT Shared Interoffice Trunk Trigger SIT Source Information Translator SIT Special Information Tone SIT Static Induction Transistor SIT System Integrity Testing SITA Societe Internationale de Telecommunications Aeronautiques SITA Societe Internationale Transport Aeronautiques SITC Satellite International Television Center SIT-CAS SIT Call Associated Signaling SITE SSIT Intelligent Test Environment SITPC Satellite International Television Program Center SITPRO Simplification of International Trade Procedures (EDIFACT) SITS Smalltalk ISDN Terminal Simulator SITS Special Investigation Test Schedule (UK) SI-TSE State-Independent Tentative Symbol Estimation SIU Serial Interface Unit SIU Slide-In Unit SIU Subscriber Interface Unit SIU System Integration Unit SIW Service Interworking SI-x Serial Interconnect-x SJ ISO country code for Svalbard and Jan Mayen Islands SJ Special Joint (ETSI) SJF Shortest Job First SJR Signal-to-Jamming Ratio SK ISO country code for Slovakia SK Postal code for Saskatchewan SK SKip SKC Session Key Changeover SKCS Shared Key Cryptosystem SKE Session Key Exchange SKE Software Key Escrow SKIL Spectrum Knowledge, Information and Learning SKIP Simple Key Exchange for Internet Protocols SKIP Simple Key Exchange Internet Protocol SKIP Simple Key Interchange Protocol SKU Stock Keeping Unit SKU Stockkeeping Unit SKY Skyline SL ISO country code for Republic of Sierra Leone SL Scenario Language SL Screening List SL Scroll Left SL Search List (TETRA) SL Secondary Language SL Secretarial Line SL Semi-Restricted Line SL Send Leg SL Service Layer SL Session Layer (OSI) SL Set Leader sl Shared Library SL Sign Language SL Signaling Link SL Single Location SL SLave station SL Smallest-Last SL Special Link SL Stack Limit SL Stored Language SL Stored Logic SL Submarine Lightwave SL Subscriber Line SL Subscriber Loop SL Suspended Line SL&C Service Logic and Control SL1 Stored Language I SL-1 Stored Language I SL-1 Stored Logic-1 SL-100 Stored Logic-100 SL2 Sublayer 2 SL3 Sublayer 3 SLA Semiconductor Laser Amplifier SLA Service Level Agreement SLA Signal Layer Adaptation SLA Storage Logic Array (Chip, Cirrus Logic Inc.) SLAC Subscriber Line Audio-processing Circuit SLAN Secure Local Area Network SLAP Subscriber Line Access Protocol SLAR Side-Looking Airborne Radar SLAT System Lineup and Test SLB Segment Lookaside Buffer SLBM Status, List, Below Minimum SLBM Submarine Launched Ballistic Missile (Military) SLBRI Single Line BRI SLC Secured Logon Coordinator SLC Signaling Link Code SLC Simple Line Code SLC Speech Link Connecting SLC Speech Link Connector SLC Submarine Laser Communications SLC Subscriber Line Charge SLC Subscriber Line Concentrator SLC Subscriber Loop Carrier SLC Subscriber Loop Concentrator SLC Synchronous Line Carrier SLCA Service Life Cycle Administration SLCC Speech Link Connecting Concentrating SLD Simultaneous Line Downtime SLD Subscriber Line Data (Bus) (ISDN) SLD Subscriber Line Device (Telecom.) SLD Superluminescent Diode SLD Symmetric Life Dependency SLD System Level Design SLDRAM Sync-Link DRAM SLDS Single-Line Digital Service SLE Screening List Editing SLE Selective List Editing SLE Single Line Environment SLE Small Local Exchange SLE Static Lightpath Establishment SLEAC Screening List Editing Access Code SLECID SLE Consecutive Invalid Digits SLED Single Large Expensive Disk SLEE Service Logic Execution Environment SLEM Status, List, Exceed Maximum SLETO SLE Timeouts SLF Screening List Features SLHR Service Logic Host Route SLHRID Service Logic Host Route ID SLI Service Logic Interpreter SLI Session Level Interface SLI Symmetric Life Independency SL-I ISDN Semi-Restricted Line SLIC Subscriber Line Interface Circuit SLIF Serial Link Interface SLIF-S Serial Link Interface-Slave SLink Serial Link SLINK Softools Advanced Linker S-Link Serial Link SLIP Serial Line Interface Protocol SLIP Serial Line Internet Protocol SLK Signaling Link SLL Satellite Line Link SLL Service Logic Language SLL Smalltalk Link Library SLLC Site Line Load Control SLLM Satellite Logical Link Manager SLLMD Satellite Logical Link Manager for DPNSS SLM Service Level Management SLM Signal Label Mismatch SLM Signaling Link Management SLM Single Longitudinal Mode SLM Spatial Light Modulator SLM Station Level Manager SLM Subscriber Loop Multiplex SLM System Load Module SLMB Subscriber Line Module Broadband SLMQW Strained-Layer Multiple Quantum Well SLMS Selective Level Measuring Set SLN Search List Number (TETRA) SLNK SL-100 Link SLNW SL-100 Network Control SLO Semi-Restricted Originating Line SLOC Single Location Resource Finder SLOC Source Lines of Code SLOF Single Location Object Finder SLOG S-Record Load Generator SLO-I ISDN Semi-Restricted Originating Line SLOTS Simulated Load Operation Testing System SLP Second Level Push-button SLP Secure Local Proxy SLP Service Location Protocol SLP Service Logic Process SLP Service Logic Processing Program SLP Service Logic Program SLP Signaling Link Processor SLP single link procedure (CCITT) SLP Station Line Protocol SLP_ID Service Logic Program Identifier SLPI Service Logic Processing Program Instance SLPT Special Loop Treatment SLPTAM Special Loop Treatment for Analog Member of EKTS SLQ Single Line Queuing SLR Send Loudness Rating SLR Sending Loudness Rating SLR Service Level Reporter (SNA) SLR Strip-Line Resonator (Micro Waves) SLR Synchronous Line Repeater SLRH Handset Sending Loudness Rating SLS SideLobe Suppression SLS Signaling Link Selection SLS Signalling Link Selection code SLS Strained Layer Superlattice SLS Synchronization Link Selection SLSI Super Large-Scale Integration (IC) SLT Arcada Backup Job File SLT SchnurLoses Telefon SLT Semi-Restricted Terminating Line SLT Set Up Logical Terminal SLT Signal Layer Trail Terminations SLT Signaling Link Test SLT SLoT sublayer SLT Special Line Traffic SLT Subscriber Line Terminal SLT Subscriber Line Termination SLT Switchman's Local Test SLT Synchronous Line Terminal SLT System Load Tape SLT System-Level Transaction SLTA Signaling Link Termination Adaptation SLTA Signaling Link Test Acknowledgment message SLTA Subscriber Loop Test Access SLTANI Special Line Traffic Automatic Number Identification SLTC Signaling Link Test Control SLTD Subscriber Loop Test Digital SLT-D Subscriber Loop Test Digital SLTE Signaling Link Termination Equipment SLTE Submarine Line Terminating Equipment SLT-E Subscriber Loop Test Extended SLT-I ISDN Semi-Restricted Terminating Line SLTM Signaling Link Test Message SLT-PDU SLot Protocol Data Unit SLU Secondary Logical Unit SLU Straight Line Undent SLU Subscriber Line Unit SLU Subscriber Line Usage SLU Subscriber Line Usage Study SLU System Load Unit SLUS Subscriber Line Usage Study(ies) SLVP Single Line Variety Package SLW Saber Lan Workstation SM ISO country code for Republic of San Marino SM Schlaer Mellor SM Security Management SM SegMent sublayer SM Senior Member SM Service Management SM Service Mark SM Service Measurement SM Service Mobility SM Service Module SM Service Monitoring SM Session Manager SM Set Manager SM Set Mode SM Shared Memory SM Short Message SM Signaling Manager SM Signaling Message SM Simulation Model SM Single Mode (Fibre Optics) SM Source Manager SM Staff-Month SM State Machine SM Statistical Multiplexing SM Stepper Motor SM Store Manager SM Streaming Mode SM Subrate Module SM Subsequence Mask SM Surface Mount SM Surface Mounted SM Surface Mounting SM Switching Module SM System Management SM System Manager SM System Metrics SM Systems Management SM3 Simulation Model Three SMA Search Mode Acquisition SMA Shelf Management Agent SMA Signaling Management Architecture SMA SNA Management Architecture SMA Source Managed Agreement SMA Speaker, Microphone, Antenna SMA Spectrum Management Agency SMA Subscriber Module Access SMA Subscriber Module AccessNode SMA Subscriber-Carrier Module Access SMA Surface Mounted Assembly SMA Synchronous Multiplexer Add/Drop SMA System Maintenance Active SMA2 Subscriber-Carrier Module Access 2 SMAA Service Mapped Architecture Analysis SMAAL Small Packet Multiplexed Asynchronous Transfer Mode Adaptation Lay er SMAD Subscriber Monitoring Activation/Deactivation SMAE System(s) Management Application Entity SMAF Service Management Access Function SMAF Service Management Agent Function SMAF Signaling Management Access Function SMAP Service Management Agent Point SMAP Signaling Management Application Process SMAP System(s) Management Application Process SMAPM Systems Management Application Protocol Machine SMART Script Manager and Automated Regression Tester SMART Self-Monitoring, Analysis, and Reporting Technology SMART Software Metering and Resource Tracking SMART Source Migration and Reporting Toolset SMART Systems Measurement Analysis and Reporting Tool SMARTRing Self-Healing Multi-Nodal Alternate Route Topology Ring SMARTS System Management Arts SMAS Service Management Application System SMAS Service Management System SMAS Switch Memory Administration Subsystem SMAS Switched Maintenance Access System SMASE System(s) Management Application Service Element SMAT Sprint Mid Atlantic SMATV Satellite Master Antenna Television SMATV Satellite Master Antenna TV System SMAUG Security Monitoring and Auditing of User Groups SMB Server Message Block (Microsoft) SMB Session Message Block SMB Signaling Management Block SMB Signaling Message Block SMB SuperNode Multicomputing Base SMB Switch Multicomputing Base SMB System Main Bus SMB System Message Block SMC SCSI-3 Medium Changer Commands SMC Senior Management Conference SMC Serial Management Controller SMC Service Management Center SMC Service Monitoring Customization SMC Site Management Center (CWAN-ATT) SMC SONET Minimum Clock SMC Standard Microsystems Corp. SMC Status Monitoring Condition SMC Subscriber and Maintenance Centre SMC Surface Mounted Components SMC Switch Maintenance Center SMC Switching Module Control SMD State Machine Data SMD Storage Module Device SMD Storage Module Drive (Peripheral Controller) SMD Subscriber Modifiable Data SMD Surface Mount Device SMD Surface Mounted Device SMD Surface-Mounted Device SMDF Subscriber Main Distributing Frame SMDI Simplified Message Desk Interface SMDL Standard Music Description Language SMDP Semi-Markov Decision Problem SMDR Station Message Detail Recording SMDR Station Message Details Record SMDR Storage Management Data Requester SMDR-P Station Message Detail Recording to Premises SMDS Switched Multimegabit Data Service SMDS Switched Multimegabit Data System SMDS Switched Multimegabit Digital Service SME Security Message Exchange SME Short Message Entity SME Signaling Management Environment SME SL Mediation Equipment SME Small to Medium Enterprise(s) SME Small-to-Medium Size Enterprise SME Society of Manufacturing Engineers SME Subject Matter Expert SME Subscriber Module Equipment SME System Management Entity SMECB SME Control Block SMED Smart Editor SMEDB SME Data Block SMF Security Management Facility SMF Selective Multicast capable Flag SMF Service Management Function SMF Shared-Memory Fabric SMF Signaling Management Function SMF Simple Message Format SMF Single-Mode Fiber SMF Software Maintenance Function SMF Status Monitoring Fail Event SMF Systems Management Function SMFA Systems Management Functional Area SMFI Shared Memory and Fabric Interface SMFS Simple-Minded File System SMFU Systems Management Functional Unit SMFUD Systems Management Functional Unit Deployment SMG Service Management SMG Special Mobile Group (ETSI TC) SMG Super Master Group SMGEN Sort/Merge GENeration SMH Signaling Message Handling SMI Sequential Minimum Interference SMI Service Management Interaction SMI Structure of Managed Information SMI Structure of Management Information SMI Subsystem Multiplicity Indicator SMI Switched-Mode Inverter (Power Supply) SMI System Management Interrupt SMIB Security Management Information Base (X.800) SMIC Sales and Marketing Information Center SMIEEE Senior Member of Institute of Electrical and Electronics Engineers , Inc. (US) SMIL Synchronized Multimedia Integration Language SMIP Strategic Management Information Plan SMIS Specific Management Information-passing Service (OSI) SMIT System Management Interface Tool SMK Shared Management Knowledge SML Service Management Layer SML Sun Microsystems Laboratories SMLE Small-Medium Local Exchange SMM Service Management Module SMM Service Mobility Manager SMM Start of Manual Message SMM System Management Mode SMMC System Maintenance Monitor Console SMMCI System Manager/Managed Component Interface SMMR Scanning Multichannel Microwave Radiometer SMMT Society of Motor Manufacturers and Traders SMN SONET/SDH Management Network SMN System Management Network SMOAC Shared Memory Ownership and Access Control SMP SCSA Messaging Protocol SMP Service Management Point SMP Service Management Process SMP Session Management Protocol SMP Signaling Management Protocol SMP Signalling Mediation Point SMP Simple Management Protocol SMP Software Maintenance Process SMP software motion picture SMP Standby Monitor Present SMP Status Monitoring Pass event SMP Surveillance Management Program SMP Switching Module Processor SMP Symmetric Multiprocessing SMP Symmetric Multiprocessor SMP Symmetrical Multiprocessing SMP Symmetrical MultiProcessing SMP Systems Management Protocol (BT) SMP+ Signaling Management Protocol Plus SM-PDU SegMent Protocol Data Unit SMPS Switched-Mode Power Supply SMPTE Society of Motion Picture and Television Engineers SMPU Switching Module Processor Unit SMPUR Subscriber Service Management Usage Report SMQ Signaling Message Queue SMR Service Management Reporter SMR Session Message Receiver SMR Signal-to-Mask Ratio SMR Software Modification Request SMR Special Mobile Radio SMR Specialized Mobile Radio SMR Split Mode Register SMR Subscriber Carrier Module-100 Rural SMR Subscriber Module, Remote SMRG Service Measurements Report Generator SMRP Simple Multicast Routing Protocol SMRS Specialized Mobile Radio Services SMRT Single Message Rate Timing SMS Satellite Multiservice System (EUTELSAT) SMS SDH Management Subnetwork SMS Service Management System (Nokia) SMS Services Message Switch SMS Set Management Services SMS Shelf Management System SMS Short Message Service SMS Short Message Services SMS Software Management System SMS Special Multicast Server SMS Speech Mail System SMS Station Management System SMS Storage Management Services SMS Subscriber Carrier Module SLC-96 SMS Subscriber Management System SMS Subscriber Management Systems SMS Subsystem Management Service SMS Switch Message Subsystem SMS System Management Service SMS System Management Software SMS Systems Management Server SMS/PP Short Message Service/Point-to-Point SMSA Standard Metropolitan Statistical Area SMSC Short Message Service Center SM-SC Short Message Service Center SMSCB Short Message Service Cell Broadcast SMS-CB Cell Broadcast Short Message Service SMSCH Short Message Service Channel SMSI System Management Service Interface SMSL Standard Multimedia Scripting Language SMS-MO/PP Mobile Originating Short Message Service, Point to Point SMS-MT/PP Mobile Terminating Short Message Service, Point to Point SMSR Side-Mode Suppression Ratio SMSR Subscriber Carrier Module SLC-96 Remote SMS-R Subscriber Carrier Module Remote Software Manufacturing Support System SMS-SC Short Message Service- Service Centre Smt Short Message Terminal SMT Station Management SMT Station Management Layer (FDDI) SMT Surface-Mounted Technology SMTP Simple Mail Transfer Protocol (TCP/IP-DoD) SMTP Simple Mail Transport Protocol SM-TP Short Message Transport Protocol SMU Scaled Measurement Unit SMU signal monitoring unit SMU Signaling Message User SMU Statistical Multiplex Unit SMU Subscriber Carrier Module Urban SMU Systems Management Utilities (IBM) SMUX Service Multiplexer SMUX SNMP Multiplexing Protocol SMV Self Monitoring Variable SMVBR Statistically Multiplexed VBR SMVT Scroll Mode VT SMX Switch Matrix Module SMXU Service Message Transfer Unit SN ISO country code for Republic of Senegal SN Segment Number SN Sequence Number SN Serial Number SN Service Node SN Service Number SN Services Node SN Stock Number SN Subnetwork SN Subnetwork Layer Service SN Subscriber Number SN SuperNode SN Switching Network S-N Signal-to-Noise SN&M Service Negotiation and Management SN/IP Service Node/Intelligent Peripheral SNA Short Number Addressing (TETRA) SNA System Network Architecture (IBM Inc.) SNA/ACF SNA Advanced Communications Functions SNA/MS SNA Management Services SNAC Switching Network Analysis Center SNACF SubNetwork Access Function (NL-OSI) SNACP SNA Control Protocol SNAcP Subnet Access Sublayer SNACP SubNetwork Access Protocol (NL-OSI) SNADS SNA Distribution Services SNaN Signaling Not-a-Number SNAP Single Number Access Plan SNAP Standard Network Access Protocol SNAP Subnetwork Access Point SNAP SubNetwork Access Protocol SNAP Subnetwork Attachment Point SNAP SuperNode Access Protocol SNAP Switch Network Analysis Program SNAP Symbolic North Assembly Program SNB Subscriber NumBer SNC Subnetwork Connection SNC Subnetwork Controller SNC Synchronous Network Clock SNCP Subnetwork Connection Protection SN-CP Service Node Control Processor SND Macintosh System Sounds File SND Serial Number Checking Denied SND Sound SND Standard Normal Deviate SND/ND (signal + noise + distortion)/(noise + distortion) SNDCF Sub-Network Dependent Convergence Function SNDCP Subnet Dependent Convergence Protocol SNDCP Subnetwork-Dependent Convergence Protocol SNE Service Notification Element SNE Signaling Network Element SNEE Services Node Execution Environment SNEG Service Negotiation SNET SONET Network SNET Southern New England Telephone SNET Synchronous Network SNF Sequence Number Field SNF Server Natural Format SNF Server Normal Font SNF Service Network Function SNF System Noise Figure SNG Satellite News Gathering SNI Secure Network Interface SNI Service Node Interface SNI Signaling Networks Identifier SNI SMDS Network Interface SNI SNA Network Interconnect SNI Standard Network Interface SNI Subscriber-Network Interface SNIAP SONET Network Interoperability Analysis Program SNIC Subscriber Network Interface Circuit SNICF SubNetwork Independent Convergence Function (NL) SNICP Subnet Independent Convergence Protocol SNICP SubNetwork Independent Convergence Protocol (NL) SNIP Shadow Next Instruction Pointer SNIP Signaling Network Identifier Parameter SNIP SuperNode IP SNIS Switching Networks Information Systems S-NIU Single Dwelling Netwotk Interface Unit SNL Signaling Network Layer SNL Spectrum Network Layer SNL SPM Network Layer SNM Service Notification Manager SNM Shiva Network Manager SNM Signaling Network Management SNM Signalling-Network-Management signal SNM Standardized Network Management SNM Subnetwork Manager SNMC Service provider Network Management Computer SNML Subnetwork Management Layer SNMP Simple Network Management Protocol SNMPD SNMP Daemon SNMPng Next Generation SNMP SNMPv1 Simple Network Management Protocol Version 1 SNMPv2 Simple Network Management Protocol Version 2 SNMPv3 Simple Network Management Protocol Version 3 SNN Server Network Node SNO Send Notify Order Snobol String-Oriented Symbolic Language SNOTEL Snow Pack Telemetry Radio SNP Sequence Number Protection SNP Service Notification Point SNP Suspended Non-Payment SNPA Serving Numbering Plan Area SNPA Subnetwork Point of Attachment SNPC Single Network Packaged Core SNQ Service Notification Queue SNQP Simple Nomenclator Query Protocol SNR Serial Number SNR Signal-to-Noise Ratio SNR Stored Number Redial SNR Subsystem Normal Routing message SNR Supernode Remote SNRC Subsystem Normal Routing Control SNRM Set Normal Response Mode (HDLC) SNRME Set Normal Response Mode Extended (HDLC) SNRS Signal-to-Noise Ratio Scalability SNS Secondary Network Server SNS Signaling Network Systems SNS Simple Name Service SNS Single Number Service SNS Software Navigation System SNSC Shanghai Nortel Semiconductor Corporation SNSE SuperNode Size Enhanced SNSE SuperNode System Enhanced SNT System Noise Temperature SNTP Simple Network Time Protocol SNUC Semipermanent Nailed-Up Connection SNUF SNA Upline Facility SNV Schweizerische Normen Vereinigung (Swiss Association for Standardi zation) SNVS Status, Not in Valid State SNW Subnetwork SNX STREAMS and TCP/IP Networking Executive SO DDOC Section: Service Orders SO ISO country code for Somali Democratic Republic (Somalia) SO Satellite Office SO Semantic Object classes SO Send Only SO Service Order SO Serving Office SO Shift Out SO Signaling Office SO Signoff SO Slow to Operate SO Small Outline SO Space Operation SO Stutter Tone Only SO Summary Overflow SO Suspend Origination SO Switching Office SOA Safe Operating Area SOA Semiconductor Optical Amplifier SOA Start of Address SOA Start of Authority SOA Suppress Outgoing Access SOAC Service Order Analysis and Control SOAR Safe Operating Area SOAR Smalltalk On A RISC SOB Statement of Boredom SOC Service Observing Circuit SOC Service Operation Center SOC Software Optionality Control SOC System Overload Control(s) SOC System-on-a-Chip SOCC Selective Origination Code Control SOCC Serial Optical Channel Converter SOCC SMS Originated Code Control SOCC Suggested Optical Cable Code SOCKS Sockets SOCS Service Order Control System SOCT Software Optionality Control Test SOD Services On-Demand SOD Stringing of Digits SODD Static Office-Dependent Database SODL Switch Object Definition Language SOE Standard Operating Environment SOF Specification of Functions SOF Start of Frame SOG Small-Outline Gull-wing SOG Subsystem Out-of-Service Grant message SOGITS Senior Officials Group for Information Technology Standardization SOGT Senior Officials Group on Telecommunications (CEC) SOH Section Overhead SOH Start of Heading SOHO Small Office/Home Office SOI Silicon On Insulator (IC Technology) SOI Start of Image SOIC Small-Outline Integrated-Circuits (Package) SOJ Small Outline J-bent package (IC) SO-J Small Outline J-Lead SOLAS Safety Of Life At Sea SOLID Software Load Information Database SOM S/DMS Operational Measurements SOM Self-Organizing Map SOM Shared Object Model SOM Start of Message SOM Supernode Operational Measurements SOM System Object Model SOM System Object Module SON Service Order Number SON Small Office Network SONAD Speech Operated Noise Adjusting Device SONAR SOund Navigation and Ranging SONET Synchronous Optical Network SONG Space, Oceanography, Navigation and Geodynamics SOOO Subscriber Out of Order message SOOS System Out-of-Service SOP Service Order Processor SOP Service Order Provisioning SOP Small-Outline Package (IC) SOP Standard Operating Procedure SOP-P Signal Operations Platforms-Provisioning SOR Start Of Record SOR Statement of Requirements SOR Station Origination Restriction SOR Subsystem Out-of-Service Request message SORC Station Origination Restrictions Controller SORF Start Of Receive Frame SORMF Start Of Receive MultiFrame SORP Self-Organized Resuse Partitioning SOS Service Order System SOS Silicon-On-Sapphire (IC Technology) SOS SMARTS Operations Server SOS Space Operation Service SOS Start of Scan SOS Start of Selection message SOS Support Operating System SOSS Support of Operator Specific Services SOST Software OID Status Table SOST Special Operator Services Traffic SOSTT Special Operator Services Traffic Trunk SOT Small Office Termination SOT Small-Outline Transistor (Package) SOT Start Of Text SOT Subscriber Originating Trunk SOTF Start Of Transmit Frame SOTMF Start Of Transmit MultiFrame SOTS Service Observed, Traffic Sampled SOVA Soft Output Viterbi Algorithm SOW Statement of Work SOX Sound Exchange SP Security Protocol SP Segment Priority SP Semi-Public SP Sent-Paid SP Serial Port SP Serial-to-Parallel SP Service Pack SP Service Participant SP Service Position SP Service Processor SP Service Protection SP Service Provider SP Service Provisioning SP Session Protocol SP Shelf Processor SP Short (radio) Path SP Signal Present SP Signal Processing SP Signal Processor SP Signaling Point SP Signaling Processor SP Signaling Profile SP Singing Point SP Single Pole SP Single Purpose SP Slave Present SP SP Software Package SP Space SP Spare SP Special SP Speech SP Speech Processor SP Spool SP Stack Pointer SP Status bit P SP Stored Program SP Subscriber Profile SP Supervisor Privilege SP Switch Profile SP Switching Point SP System Parameters SP System Product SP-1 Stored Program-1 SP3 Security Protocol for Network Layer Three SPA Semi-Permanently Associated SPA Service Package Application SPA Session Participant Address SPA Software Process Assessment SPA Software Publishers Association SPA Special Application SPA Special Applications Armor SPA Start of Protected Area SPAc SPA Call Session SPACE System Performance and Cellular Engineering SPACH SMSCH, PCH, and ARCH Channels SPAD Synchronous PAD SPADE Single-Channel-Per-Carrier Pulse-Code-Modulation Multiple AccessDemand Assignment Equipment SPAG Standards Promotion and Application Group, S.A. SPAMM Single Policy Acting on Multiple Models SPAN Simple Protocol for ATM Network SPAN System for Planning the Access Network SPANS Simple Protocol for ATM Network Signaling SPAP Shiva Password Authentication Protocol SPAPH Semi-Permanent Access to Packet Handler SPAPHDDN SPAPH Default DNs SPAPHDN SPAPH Directory Numbers SPARC Selectable Processor ARChitecture (Sun/Microsystems Inc. RISC) SPAT Services Process and Architecture Team SPAt SPA Terminal Endpoint SPB Special Billing SPBI Sub-Period Billing Interval SPC SCSI-3 Primary Commands SPC Secondary Point Code SPC Semipermanent Connection SPC Service Profile Configuration SPC Service Protection Center SPC Signal Processing Companion SPC Signal Processing Component SPC Signal Processor Companion SPC Signaling Point Code SPC Single Point Connection SPC Software Publishing Corporation SPC Special SPC Speech Processing Control SPC Split Charging Service SPC Statistical Process Control SPC Stored Program Control (PABX) SPC Stored Program Controlled SPC Subscriber Power Controller (ISDN) SPC Suppress Preferential (CUG) SPC-CMS Stored Program Control-Call Management System SPC-DM Stored Program Control-Download Module SPCF Service Point Command Facility (APPN-IBM) SPCI Small Form-Factor PCI S-PCN Satellite- Personal Communications Network S-PCN Satellite Personal Communications Network SPCRIT Specific Criterion SPCRT SPC Report Type SPCS Service POint Command Services (Net/Master, IBM) SPCS SPC Status SPCS Stored Program Control Switch(ing) (System) SPCS Stored Program Control System S-PCS Satellite-based Personal Communications System SPD Sample Pulse Driver SPD Semipermanent Data SPD Signal Processing and Display SPD Simplified Printer Description SPD Software Process Development SPD Spectral Power Distribution SPD Structural Protocol Definition SPD Surge Protective Device SPDBT Single PilotDataBase Table SPDL Standard Page Description Language SPDT Single-Pole Double-Throw switch SPDT Special Dial Tone SPDU Session Protocol Data Unit SPE Semi-Public Environment SPE Service Provider Environment SPE Synchronous Payload Envelope SPE Synchronous Payload Environment SPEC Service and Product Enhancement Code SPEC Speech Predictive Coding SPEC Speech Predictive Encoded Communication SPEC Standard Performance Evaluation Corporation SPEC System Performance Evaluation Corporation SPECCONN Special Connections SPECs Software Productivity thru Enhanced Communications SPECS Specification and Programming Environment for Communications Softw are SPECT Single Photon Emission Computed Tomography (Medical) SPEED Streamlined Process Expiditing Engineering Deliverables SPEG Still Picture Experts Group (ISO) SPESS Stored Program Electronic Switching System SPF Shortest Path First SPF Structured Programming Facility SPF System Performance Factor SPFD Spectral Power Flux Density SPG Signaling Processor Gateway SPG Single Point Ground SPGA Software Programmable-Gain Amplifier SPGA Staggered Pin Grid Array SPH Signal Processing Hardware SPI SCSI-3 Parallel Interface SPI Security Parameters Index SPI Serial Peripheral Interface (Bus) (RCA/Motorola Inc.) SPI Service Profile Identification SPI Service Provider Identifier SPI Service Provider Indicator SPI Service Provider Interface SPI Services Programming Interface SPI SPACE Provisioning Interface SPI Spacing Increment SPI Speaker Identification SPI Standard (electronic) Picture Interconnect (Siemens AG) SPI Stream Programming Interface SPI Subsequent Protocol Identifier SPI Synchronous Physical Interface SPI System Programmer's Interface SPI Systems Programming Interface SPICE Simulation Program with Integrated Circuits Emphasis SPICE Software Process Improvement and Capability Determination SPID Service Profile Identification SPID Service Profile Identifier SPID Service Provider Identification SPIE International Society of Optical Engineering SPIM Smalltalk Portable Imaging Model SPIN Software Process Improvement Network SPINE SPace Informatics NEtwork SPIRIT Service Providers Information and Requirements for IT SPITE Switching Processing Interface Telephone Event SPKI Simple Public Key Infrastructure SPKM Semi-Public Key Mechanism SPL Service Provider Link SPL Session Processing Level SPL Software Parts List SPL Sound Pressure Level SPL Special SPL Special Billing SPL Speed Call Long SPL Splice SPL Split Charging SPL Stored Procedure Language SPL CLD Special Called Billing SPL CLG Special Calling Billing SPL/M Systems Programming Language for Microprocessors S-plane Supervisory plane SPLC Split Charging SPM Self Phase Modulation SPM Service Participant Manager SPM Service Peripheral Module SPM Service Profile Management SPM Services Peripheral Module SPM Session Protocol Machine (OSI-SL) SPM Signaling Point Manager SPM Signaling Processor Memory SPM Software Process Modeling SPM Software Programmer's Manual SPM SONET Physical-layer Mapping SPM Specialized Processing Module SPM Spectrum Peripheral Module SPM Subscriber Premises Meter SPM Subscriber Private Metering SPM Subscriber Profile Management SPM Subscriber's Private Meter SPM Subscription Parameter Management SPM Supervisory Processor Module SPM Switch Performance Monitoring SPM Synergy Peripheral Module SPM-B Service Profile Management- Basic Rate SPMPC Supervisory Processor Module Paddle Card SPMS Switch Performance Monitoring System SPN Service Provider Network SPN Signal Processing Node SPN Signaling Parameter Negotiation spn Signaling Parameter Negotiation SPN Subscriber Premises Network SPNB Some-Primary/No Backup SPNP Support of Private Numbering Plan (supplementary service) SPOC Single Point of Contact SPOI Signaling Point of Interface SPOOL Simultaneous Peripheral Operations On-Line SPOT Service Pilot on TINA SPOT Signaling Point of Termination SPP Sequence Packet Protocol (XNS) SPP Service Providing Point SPP Service Provision Point SPP Service Provisioning Platform SPP Service Provisioning Point SPP Signal Processing Package SPP Single Process Purge SPP Speech Processing Peripheral SPP Station Programmable PIN SPPAY Semi-Postpay Pay-Station SPPS Semi-Postpay Pay-Station SPR Send Priority and Route Digit SPR Service Profile Reference SPR Signaling Point With SCCP Relay Function SPR Spare SPR Special-Purpose Register SPR Symmetrical Phase Recording SPRC Signaling Process Control SPRIG System for Placement and Routing using Interconnect Geometry SPRING Shared Protection Ring SPRING Subscriber Programmable Ringing SPRINT Service Process Reduction of Interval Team SPRINT Services Product Reduction of Interval SPRINT Southern Pacific Railroad Internal Telecommunications SPRITE Spectrum Peripheral Reusable Integrated Telecommunications Environ ment SPROM Switched Programmable Read-Only Memory SPS Samples Per Second SPS Service Provider System SPS Signal Processing for Storage SPS Signalling Protocols and Switching (ETSI TC) SPS Signalling, Protocols and Switching SPS Software Process Sheets SPS Software Product Specification SPS Solar Power Satellite SPS Speed Call Short SPS Speed Calling Short SPS Standby Power Supply SPS State Processing Software SPS Statistics Processing System SPS String Process System SPS System Performance Score SPSB Some-Primary/Some-Backup SPSS Statistical Package for the Social Sciences SPST Single-Pole Single-Throw SPST Single-Pole Single-Throw switch SPT Sectors Per Track SPT Self Paced Tutorial SPT System Page Table SPTeam Services Prototyping Team SPTF Shortest Processing Time First SPTM Service Processor Transition Module SPTR Safe Data Pointer SPTS Single Program Transport Stream SPTV Still Picture Television SPTY Single Party SPU Serial Processing Unit SPU Signalling Point Unknown message SPU Speech Processing Unit SPU Speed Call User SPU Strategic Planning Unit (ITU) SPU System Processing Unit SPU System Processor Unit SPV Semipermanente Verbindung (Semipermanent Connection) spvb Service Profile Verification- Basic Rate SPV-B Service Profile Verification- Basic Rate SPVC Soft PVC SPVP Soft PVP SPW Signal Processing Workbench SPW Signal Processing Worksystem SPW Subscribers Private Network SPWM Synchronized Pulse-Width Modulation SPX Sequenced Packet Exchange (Novell) SPX Service Processor with UNIX SPyT Single-Party Testing SQ Signal Quality SQ SQuare SQ Status bit Q SQA Software Quality Assurance SQAM Staggered Quadrature Amplitude Modulation SQC Statistical Quality Control SQCIF Sub QCIF SQD Signal Quality Detector SQE Signal Quality Error SQEG Speech Quality Experts Group SQET Signal Quality Error Test SQFD Software Quality Function Deployment SQFP Small Quad Flat Pack SQH Sender Queue High SQI Software Quality Improvement SQI Supplier Quality Improvement SQL Sender Queue Low SQL Specified Quality Level SQL Structured Query Language (Data Base Retrieval Language) SQLQMF SQL Query Management Facility (IBM) SQPR Software Quality Program Requirements SQRM Software Quality Reference Manual SQRT Square Root SQT Site Qualification Test SQuID Source Quench Introduced Delay SQUID Superconducting QUantum Interference Device SR ISO country code for Republic of Suriname SR SCE Recovery SR Scroll Right SR Secondary Radar SR Segment Register SR Selective Ringing SR Selective Routing SR Semi-Restricted Line SR Send Ready SR Sender Report SR Service Report SR Service Request SR Shift Register SR Short Reach SR Signaling Rate Selector SR Signalling Rate bit SR Single-Resolution SR Slew Rate SR Slow Release SR Smalltalk Report (periodical) SR Source Route SR Source Routing SR Space Research SR Special Report SR Status bit R SR Status Register SR Status Request SR Storage Register SR Storage to Register SR String Range SR Subrate SR Symbolic Range S-R System-to-Receiver optical power SR0 Supervisor Storage Register 0 SR1 Supervisor Storage Register 1 SR10 Series 10 Processor Circuit Pack SR2 Supervisor Storage Register 2 SR20 Series 20 Processor Circuit Pack SR3 Supervisor Storage Register 3 SR30 Series 30 Processor Circuit Pack SR40 Series 40 Processor Circuit Pack SR50 BRISC Series 50 Processor Circuit Pack SR512 Subrate DS-512 SR60 BRISC Series 60 Processor Circuit Pack SR70 BRISC Series 70 Processor Circuit Pack SRA Selective Routing Arrangement SRA Service Reuse Architecture SRA Single Rate Area SRA Software Requirements Agreement SRA Standby-Ready-Acknowledgement signal SRA Status Request Acknowledge SRA Suppressed Ringing Access SRAC Strategic Resource Advisory Council SRAM Shared RAM SRAM Static RAM SRAM Static Random Access Memory SRAPI Speech Recognition API SRASM Standard Relocatable Assembler SRB Software Release Bulletin SRB Source Route Bridging SRB Switched Redundancy Billing SRB Synchronisation Reference Burst SRBP Synthetic Resin Bonded Paper (printed circuit board) SRBX Spontaneous Report-By-Exception SRC Search SRC Semiconductor Research Corporation SRC Shared Resources Computer SRc Signalling Rate capability SRC Software Repair Center SRC Source SRC Standard Recognition Circuit (television) SRC Strategic Review Committee (ETSI) SRC Subrate Controller SRC System Recovery Controller SRC6 ETSI Strategic Review Committee No. 6 SRCC Signaling Route Congestion Control SRCC SONET Remote Cluster Controller SRCC2 SONET Remote Cluster Controller 2 SRCF Subregional Control Facility SRCT Signaling Route Set Congestion Test SRD Secondary Receive Data SRD Short Range Device SRD Strategic Resource Development SRDA S-Bus Receive Data SRDB Selective Routing Database SRDL Subrate Digital Loop SRDM Subrate Data Multiplexer SRDY Synchronous Ready SRE Send Reference Equivalent SRE Sending Reference Equivalent SRE Signaling Range Extender SRE Software Release Environment SRE Software Reliability Engineering SRE Standard for Robot Exclusion SRE Standard for Robots Exclusion SRE Surveillance Radar Equipment SREJ Selective REJect (HDLC) SRES Expected Subscriber Response SRES Signed Response SRES Signed RESponse (authentication) Sres SourceRouteEndStation SREX System Routine Exercise Controller SRF Service Request Flag SRF Service Request Form SRF Service Resource Finder SRF Service Resource Function SRF Special Resource Function SRF Specialized Resource Function SRF Specifically Routed Frame SRF Status Report Frame SRFCI Service Resource Finder Command Interface SRFO Sequential Routing with Flow Optimization SRG Shift Register Generator SRHR Service Resource Host Route SRHRG Service Resource Host Route Group SRI Send Routing Information SRI Service-Request-Inhibit SRI Signal Related Information SRI SMDS Interface Protocol (SIP) Relay Interface SRI SMDS Relay Interface SRI Stanford Research Institute SRI Subscriber Remote Interface SRI Suspend/Resume Indicator(s) SRI Suspend/Resume Information SRL Shift Register Latch SRL Silicon Reuse Library SRL Singing Return Loss SRL Software Restructuring Lab SRL Stability Return Loss SRL Structural Return Loss SRLHI Singing Return Loss-High SRLLO Singing Return Loss-Low SRM Scalable Reliable Multicast SRM SCE Release Management SRM Security Reference Monitor SRM Segment Review Meeting SRM Self-Routing Module SRM Send/Receive Mode SRM Service Reference Model SRM Service Requirements Model SRM Service Requirements Modeling SRM Session and Resource Manager SRM Signaling Route Management SRM Small Rack Mount SRM Statistical Reliability Monitoring SRM Stratified Reference Model SRM Subsystem Relationship Model SRMA Split-channel Reservation Multiple Access SRME Specialized Resource Management Entity SRMF Send and Receive Multifrequency SRMF Send-Receive Multifrequency SRMS Shuttle Remote Manipulator System SRMTC Speech Recognition Maintenance Task SRMU Subrate Multiplexer Unit SRN Segment Release Notice SRN Source Recepient Node (DIA) SRP SCCP Relay Point SRP Service Request Policy SRP Signaling Relay Point SRP Signaling Routing Point SRP Simplified Retransmission Protocol SRP Software Release Package SRP Software Release Process SRP Speech Recognition Processor SRP Standard Rollout Package SRP Standard Rollout Process SRP STS Reorder and Protection SRP Suggested Retail Price SRP Supervisor Root Pointer Register SRPI Server Requester Programming Interface (IBM) SRPP System Reference Potential Plane SRPT Status Report SRQ Service Request SRQ Status Request SRQAC Software Reliability and Quality Acceptance Criteria SRR Secondary Receiver Ready SRR Serially Reusable Resource SRR Short Range Radio SRr Signalling Rate Request SRR0 Machine Status Save/Restore Register 0 SRR1 Machine Status Save/Restore Register 1 SRS Secondary Request to Send SRS Service Request Signal SRS Shared Registry System SRS Signaling Route Set SRS Software Requirements Specification SRS Sound Retrieval System SRS Space Research Service SRS Standard Receive Side SRS Standard Repair System SRS Statutory Reporting Structure SRS Sub-Rating Scheme SRS Subscriber Recording System SRSC SONET Remote Switching Center SRSC Streamlined Remote Switching Centre SRSCT Signaling Route Set Congestion Test SRSF Session Resource Finder SRSM Specialized Resource Function Call State Model SRSP Session Root Service Proxy SRSP Standard Radio System Plan SRSS Speech Recognition Service Supervisor SRST Signaling Route Set Test SRT Self-Routing Tag SRT Service Routing Transparent SRT Short Range Telemetry SRT Shortest Remaining Time SRT Signaling Route Test SRT Source Route Transparent SRT Source Routing Transparent SRT Station Ringer Test SRT Station Ringing Transfer SRT Subsystem Routing Status Test message SRTAD1 Station Ringing Transfer Activate Destinations 1 SRTAD2 Station Ringing Transfer Activate Destinations 2 SRTAD3 Station Ringing Transfer Activate Destinations 3 SRTC Subrate Channel SRTC Subsystem Routing Status Test Control SRTD Silicon Release To Design SRTD1 Station Ringing Transfer Destinations 1 SRTD1ACC SRT Destination Set 1 Access Codes SRTD2 Station Ringing Transfer Destinations 2 SRTD2ACC SRT Destination Set 2 Access Codes SRTD3 Station Ringing Transfer Destinatioons 3 SRTD3ACC SRT Destination Set 3 Access Codes SRTDD1 Station Ringing Transfer Deactivate Destinations 1 SRTDD2 Station Ringing Transfer Deactivate Destinations 2 SRTDD3 Station Ringing Transfer Deactivate Destinations 3 SRTL Silicon Release To Layout SRTM Status-Reporting Transfer Mode SRTP Silicon Release To Prototype SRTS Synchronous Residual Time Stamp SRTT Smoothed Round-Trip Time SRTTD1 Station Ringing Transfer Toggle Destinations 1 SRTTD1ACC SRT Destination Set 1 Toggle Access Code SRTTD2 Station Ringing Transfer Toggle Destinations 2 SRTTD2ACC SRT Destination Set 2 Toggle Access Code SRTTD3 Station Ringing Transfer Toggle Destinations 3 SRTTD3ACC SRT Destination Set 3 Toggle Acess Code SRTV Silicon Release To Verification SRU Shared Resource Unit SRU Small Remote Unit SRU Super Recording Unit SRUC Split Reservation Upon Collision SRV SCCP Routing Verification SRV Service message SRVA SCCP Routing Verification Acknowledgement SRVR SCCP Routing Verification Result SRVT SCCP Routing Verification Test SS Sandbox Submit SS Segmented Store SS Select Standby SS Sequence State SS Service Supervisor SS Service Switching SS Session Service(s) SS Signaling Server SS Signaling System SS Simple Session SS Single Shift SS Single Sided SS Single Step SS SMDS Switching System SS Solid State SS Space Segment SS Space Switch SS Special Service SS Special Services SS Spread Spectrum SS Stack Segment SS Static Style SS Station to Station SS Storage-Storage SS Structured Storage SS SubSystem (number) SS Supervisory Signal SS Supervisory System SS Supplementary Service SS Supplementary Service(s) SS Switching System SS System Simulator SS System Stack SS#5 Signaling System No. 5 SS#6 Signaling System No. 6 SS#7 Signaling System No. 7 SS/80 SubSet 1980 SS2 Single Shift 2 SS3 Single Shift 3 SS5 Signaling System No. 5 SS6 Signaling System No. 6 SS7 Signalling System No 7 SSA Serial Storage Architecture SSA Signal Stability-Based Adaptive Routing SSA Start of Selected Area SSA Subsystem Allowed message SSAC Station-Specific Authorization Code SSAC Subsystem Allowed Control SSAD Subscriber Service Activation/Deactivation SSAP Session Service Access Point SSAP Source Service Access Point (token ring) SSA-PH Serial Storage Architecture Bus SSAS Station Signaling and Announcement Subsystem SSB Signaling State Block SSB Single Sideband SSB Software Status Bulletin SSB Subscriber Busy SSB Subscriber Busy message SSB Subscriber-Busy signal SSBAM Single Sideband Amplitude Modulation SSBR Shadow Scoreboard Register SSBSC Single Sideband Suppressed Carrier SSC SCSI-3 Stream Commands SSC Sector Switching Center SSC Selective Signalling Code SSC Single System City SSC Small Subscriber Carrier SSC SMP Service Creation SSC Spare Storage Cabinet SSC Special Service Center SSC Specialized Systems Consultants, Inc. SSC Station Selection Code SSC Subscriber Security Control SSC Subscriber Services Controller SSC Subsystem Clock SSC Supplementary Service Control string SSCE Supplementary Service Control Entity SSCF Service Specific Coordination Function SSCF Service Specific Co-ordination Function SS-CF Supplementary Service- Call Forwarding SS-CFB Supplementary Service- Call Forwarding Busy SS-CFNR Supplementary Service- Call Forwarding No Reply SS-CFU Supplementary Service- Call Forwarding Unconditional SS-CLIP Supplementary Service- Calling Line Identification Presentation SS-CLIR Supplementary Service- Calling Line Identification Restriction SS-CNIP Supplementary Service- Calling Name Identification Presentation SS-CNIR Supplementary Service- Calling/Connected Name Identification Restr iction SS-COLP Supplementary Service- Calling Line Identification Presentation SS-CONP Supplementary Service- Connected Name Identification Presentation (supplementary service) SSCOP Service Specified Connection Oriented Protocol SSCP Service Switching and Control Point SSCP System Service Control Point (SNA) SSCS Service Specific Convergence Sublayer SS-CT Supplementary Service- Call transfer SSD Second Start Dial SSD Secondary Send Data SSD Service Subscription Directory SSD Service Support Data SSD Shared Secret Data SSD Solid State Disk SSD Source-Surface Distance SSD Space Services Division SSD Start of Stream Delimiter SSD Static Sensitive Device SSDA Synchronous Serial Data Adapter SSDD Singe-Sided Double-Density (Disk) SSDU Session Service Data Unit SSE Service Subscription Element SSE Static Service Element SSE System Supervisory Equipment SSE System Surveillance Equipment S-SEED Symmetric SEED SSES Small Smart Electronic Switch SSF Same-Side-First SSF Service Specific Functions SSF Service Support Function SSF Service Switching Function (IN term) SSF Single Sided Frame SSF Small Single Fibre SSF Sub-Service Field SSF SuperSonic Frequency SSFC Sequential Single Frequency Code SSFDC Solid State Floppy Disk Card SSG Signaling Server Group SSG Software Submissions Guidelines SSG Subscriber Service Group SSGR Supplier Support Generic Requirements Ssh Secure Shell SSHO Softer Handover SSI Server Side Include SSI Server Side Includes SSI Small-Scale Integration SSI Start Service Instruction SSI Start Signal Indicator SSI Submarine Systems Inc. (AT&T) SSI Subscriber Service Invocation SSI Supplementary Service Interactions SSI Supplementary System Information SSI Synchronous Serial Interface SSID Service Specific Initiation Data SSID Start Service Instruction Detail SSIE System Service Initiation Event SSIF Supplementary System Information Field SSIG terminal-network SIGnalling at T reference point SSIS Solid-State Image Sensor SSIT SCPII/SMS Interface Tester SSIT Supplementary System Information Type SSL Secure Sockets Layer SSL Subscriber Service Limiter SSLC Special Service Line Card SSLO Solid State Local Oscillator SSLPP Single Shelf Link Peripheral Processor SSM Satellite System Monitor SSM Service State Machine SSM Single Segment Message SSM Special Services Module SSM Spread Spectrum Modulation SSM spread-spectrum modulation SSM Switching State Model SSM Synchronization Status Message SSM Sync-Stream Manager SSM System Support Machine SSMA Scan Shared Memory Area SSMA Spread Spectrum Multiple Access SSMB Special Services Management Bureau SSME Service Switching Function Management Entity SSMG Satellite System Monitoring Group SSMS Special Services Management System SSN Special Services Network SSN Subsequence Number SSN Sub-System Number SSN Survivable Subnetwork SSN7 Signaling System No. 7 S-SNMP Secure SNMP SSO Satellite Switching Office SSOC Switching Services Operations Center SSOG Satellite System Operations Guide (INTELSAT) SSOP Satellite System Operating Plan (INTELSAT) SSOP Shrink Small Outline Packaging SSP SCSI-3 Serial Storage Protocol SSP Security Service Provider SSP Selector Signal Preparation SSP Service Switching Point SSP Service Switching Point (IN term) SSP Service-Specific Part SSP Signalling and Switching Processor SSP Signalling Switching Point SSP Subsystem Prohibited message SSP Supervisor Stack Pointer SSP Switching Service Process SSPA Solid State Power Amplifier SSPC Subsystem Prohibited Control SSPI Security Service Provider Interface SSPI System Specific Performance Index SSPID SSP ID SSPM Subscriber Service Profile Manager SSPSK Spread Spectrum Phase Shift Keying SSPSNBR SSP Sub-System Number SSP-UT Service Switching Point Under Test SSR Secondary Surveillance Radar SSR Separations Summary Register SSR Solid State Relay SSR solid-state recorder SSR Steady State Reception SSR Subscriber Service Report SSR Subscriber Support Representative SSR Supplier's Software Repository SSR Switch Status Report SSR System Status Register SSRA Spread Spectrum Random Access SSRC Synchronization Source SSRE Status, System Resources Exceeded SSRR Strict Source and Record Route SSRV Send Service message SSS Self-Synchronizing Scrambling SSS Self-Synchronous Scrambling SSS Signalling Software Subsystem SSS SMDS Switching System SSS Standard Send Side SSS Switched Special Service(s) SSS Switched SubSystem SSS Switching Subsystem SSS System/Segment Specification SSS Systems Security Services SSSD Single-Sided Single-Density (Disk) SSSF Self-Scanner Stop Failure SSSP Station to Station Sent Paid SSSR Subscriber Service Status Report SST Safe Store Utility SST Secondary State SST Send Special Information Tone message SST Send Special information Tone signal SST Short Sender Timing SST Short Supervisory Transition SST Silicon Storage Technology Inc. SST Single Sideband Transmission SST Spread-Spectrum Technology SST Subscriber Service Testing SST Subscriber Station SST Subscriber Transferred SST Subscriber-Transferred (Changed Number) signal SST Subsystem Status Test message SST Super Self-aligned Technology (High-Speed Bipolar IC) SST Synchronous Service Transport SST Synchronous System Trap SST System Segment Table SSTC Subsystem Status Test Control SSTDMA Switched Satellite Time Devision Multiple Access SS-TDMA satellite-switched TDMA SSTF Shortest Seek Time First SSTI System Segment Table Index SSTIC Shared Storage Interface Chip SSTO System Segment Table Offset SSTP Status, Stopped SSTV Slow Scan Television SSTV Slow-Scan TeleVision SSU Single Signaling Unit SSU Subsequent Signal Unit SSU Switch Supervisory Unit SSU Synchronization Supply Unit SSW Serving Switch SSW Space Switch ST end-of-pulsing Signal ST ISO country code for Democratic Republic of Sao Tome and Principe ST MF Start Signal ST SCE Testing ST Science and Technology ST Sector Tandem ST Segment Type ST Send Timing ST Serial Telecom ST Serial Transmission ST Short-Term ST Sidetone ST Signaling Terminal ST Signaling Tone ST Signalling Termination ST Slot Type ST Smalltalk st Smalltalk File ST Software Testing ST Source Terminate ST Space Telescope ST Spanning Tree ST Start signal ST Stimulus Terminal ST Stop Pulsing Signal (End-of-Pulsing Signal) ST Stop Transmission ST Straight Tip ST Stream Protocol ST Street Name ST String Terminator ST Subscriber's Terminal st Such that ST SuperTracer ST Suspend Termination ST Symbol Table ST System Time St/Ev State/Event Mapping ST/SYS Storage and Transfer System ST/V Digitalk Smalltalk/V ST/X Smalltalk/X ST2 Stream Protocol Version 2 ST2P Stop Pulsing Signal Double Prime ST3P Stop Pulsing Signal Triple Prime ST6E Signaling Terminal 6 Equipment ST7 Signaling Terminal 7 ST7A Signaling Terminal 7 Array ST7E Signaling Terminal 7 Equipment ST80 Smalltalk-80 STA Servei de Telecommunicacions d'Andorra STA Service Test Application STA Short Term Accessibility STA Signaling Terminal Array STA SmalltalkAgents STA Spanning Tree Algorithm (IEEE 802.1D) STA State STA Station STACS Security Technology and Consulting Services STAG Security Techniques Advisory Group (ETSI) STAIRS STorage And Informations Retrieval System STAM Smalltalk Architecture Model STAMP Standardized Message Protocol STAMP Standardized Test Access Message Packet STAP Smalltalk Apprentice Program STAR Advanced telecommunications for the industrially less advanced reg ions of the EC STAR Satellite STAR Setup Info and Reusable Dialogs STAR Special Telecommunication Action for Regional Development STAR Subspace-Tracking Array-Receiver STAR System to Test Adaptive Routing STAREQ STAR (*) Equivalence Code STARS Sampled Traffic Analysis and Reports System STARS Software Technology for Adaptable, Reliable Systems STAT Status message STAT ENQ Status Enquiry message STB Set-Top Box STB Shelf Test Bus STB Signalling Terminal Buffer STB Simulation Testbed STB Split Ticket Billing STB Stage Translation Block STB Symbol Table STBA Segment Table Base Address ST-BUS Mitel Semiconductor Serial Telecom Bus ST-Bus Synergy Transaction Bus STBY Standby Stby Standby STBYC Standby-Cold STBYH Standby-Hot STBYI Standby Inhibited STBYS Standby Switched STC ETSI Technical Sub-Committee STC Secondary Transit Center STC Sensitivity Time Control STC Serving Test Center STC Signaling Terminal Controller STC Signalling Terminal Controller STC single time code STC Society for Technical Communication STC Society of Technical Communication STC Software Technology Center STC Standard Telephone & Cable STC Standard Telephones and Cables STC Standard Transmission Code, STC Structure Chart STC SubTechnical Committee (ETSI) STC Switching and Testing Center STC System Time Clock STC Systems Training Center STCC Spacecraft Technical Control Centre STCM Signaling Terminal Control Module STCM Signaling Terminal Controller Module STD Software Test Description STD Standard STD Standard Deviation STD State Transition Diagram STD Stuttered Dialtone STD Subscriber Trunk Dialing STD Synchronous Time Division STD System Target Decoder STD_ANN Standard Announcements STDA S-Bus Transmit Data STDD Shared Time-Division Duplexing stderr Standard Error Output stdin Standard Input stdlog Standard Logging Output STDM Statistical Time Division Multiplexer STDM Statistical Time-Division Multiplexer STDM Statistical/synchronous TDM STDM Synchronous Time Division Multiplexing STDMG STD Manufacturer's Group STDN Space Tracking and Data Network stdout Standard Output STDP Single Throw Double Pole switch STE Section Terminating Equipment STE Section Termination Equipment STE Security Terminal Equipment STE Segment Table Entry STE Service Triggering Element STE Signaling Terminal STE Signaling Terminal Equipment STE Signaling Terminal Link Error Threshold Exceeded STE Signaling Terminating Equipment STE Software Test Environment STE Span Terminating Equipment STE Spanning Tree Explore STE Spanning Tree Explorer STE Station Terminal Equipment STE Supergroup Translating Equipment STE6 Signaling Terminal 6 Extension STE7 Signaling Terminal 7 Extension STEAM Segmented Testcase Execution Administration and Management STEG Segment Table Entry Group STEI Static TEI STEM STS Element Manager STEP Signaling Transfer and Endpoint STEP Single Test Execution Platform STEP Software Technology Evolution Program STEP Standard for the Exchange of Product Model Data (EDI) STF Short-Term Failure STF Some Tests Failed STF Speech Transcoding Frame STF Start Field STF State Transition Failure STFL Signaling Terminal Card Failure STFP SGML Tree Formatting Process STFP Standard Tree Formatting Process STG Signaling Terminal Group STG Single Trunk Group STG SToraGe STG System Test Group STH Services Test Head STI Scientific and Technical Information STI Securicor Telesciences Inc. STI Signalling Terminal Interface STIC Smalltalk Industry Council STID Set TID STIG Speech Technologies Interest Group STIG Speech Technology Interest Group STIM Smalltalk Implementation Model STK Search Tool Kit STK Standard Electric Kirk STL St. Laurent STL Standard Telecommunication Laboratories STL Standard Telegraph Level STL Standard Template Library STL Studio-Transmitter Link STLP Secure Transport Layer Protocol STLWS Supplementary Trunk Line Work Station STM Scanning Tunneling Microscope STM Scanning Tunneling Microscopy STM Service Traffic Management STM Service Trunk Module STM Short Term Memory STM Signaling Traffic Management STM Small Trunk Module STM STation Management (FDDI) STM Subscriber Traffic Monitoring STM Synchronous Time Multiplexing STM Synchronous Transfer Mode STM Synchronous Transport Mode STM Synchronous Transport Module STM-1 Synchronous Transfer Mode 1 STM-1 Synchronous Transfer Model-level 1 STMF STate Management Function STM-N Synchronous Transport Module-N STMR Sidetone Masking Rating STMR Side-Tone Masking Reference STN Special Tone STN Station STN Stream to NHLFE Map STN Super Twisted Nematic (LCD Displays) STN Super-Twist Nematic STND Standard STO Single Traffic Office STO System Test Objectives STOR Sectored Transmit, Omni Receive STOR Store Allocator STORM Structure-Oriented Resilent Multicast STP Screened Twisted Pair STP Service Transaction Program STP Shielded Twisted Pair STP Short Term Prediction STP Signal Transfer Point STP Signaling Transfer Point STP Software Test Plan StP Software Through Pictures STP Spanning Tree Protocol (FDDI) STP Standard Temperature and Pressure STP SToP STP Stop Pulsing Signal Prime STP Subtable Pointer STPA ST-BUS Parallel Access Circuit STPDPCD1 STP Destination Point Code (Primary) STPDPCD2 STP Destination Point Code (Secondary) STPGTSCD STP Global Title Source Code STPL Sidetone Path Loss STPST Stop-Start STPTTNBR STP Translation Type Number STQ Service Triggering Queue STQ Specch Processing, Transmission and Quality Aspects STR Sanity Timer Register STR Selective Toll Restriction STR Selective Trunk Reservation STR Send To Resource STR Sidetone Reduction STR Slotted Tube Resonator (NMR) STR Software Test Report STR Speaker-Trained Recognition STR Special Tone Receiver STR Specialized Tone Receiver STR State- and Time-Dependent Routing STR Synchronous Transmit/Receive STR Synchronous Transmitter/Receiver STRD Short Timed Release Disconnect STRE Sidetone Reference Equivalent STRI Technological Institute of Iceland Standards Division STRIDE Science and Technology for Regional Innovation and Development in Europe STRIFE Stress to Life STRSS Speaker-Trained Recognition Service Supervisor STS Scandinavian Telecommunications Services STS Secondary Timing Supply STS Serving Translation Scheme STS Set Transmit State STS Shared Tenant Service STS Signaling Terminal Shelf STS Site Transmission System StS Smalltalk Systems STS Software Test System STS Software Testing System STS Space Transportation System (Shuttle) STS Space-Time-Space (switching) STS Speech Technology Server STS Staged Transport System STS Station-to-Station STS Synchronous Transfer Signal STS Synchronous Transfer System STS Synchronous Transport Signal STS1 Synchronous Transport Signal Level 1 STS-1 Synchronous Transport Signal-Level 1 STS12 Synchronous Transport Signal Level 12 STS-12 Synchronous Transport Signal-Level 12 STS18 Synchronous Transport Signal Level 18 STS-18 Synchronous Transport Signal-Level 18 STS192 Synchronous Transport Signal Level 192 STS-192 Synchronous Transport Signal-Level 192 STS24 Synchronous Transport Signal Level 24 STS-24 Synchronous Transport Signal-Level 24 STS3 Synchronous Transport Signal Level 3 STS-3 Synchronous Transport Signal-Level 3 STS36 Synchronous Transport Signal Level 36 STS-36 Synchronous Transport Signal-Level 36 STS3C Synchronous Transport Signal Level 3 Concatenated STS-3C Synchronous Transport Signal-Level 3 Concatenated STS48 Synchronous Transport Signal Level 48 STS-48 Synchronous Transport Signal-Level 48 STS9 Synchronous Transport Signal Level 9 STS-9 Synchronous Transport Signal-Level 9 STS96 Synchronous Transport Signal Level 96 STS-96 Synchronous Transport Signal-Level 96 STSN Set and Test Sequence Numbers STSn Synchronous Transport Signal Level n STS-n Synchronous Transport Signal-Level n STS-N Synchronous Transport Signal-Level N STS-Nc Concatenated Synchronous Transport Signal- Level N STSR Sectored Transmit, Sectored Receive STST Self Test STT Secure Transaction Technology STT Services Tracking Tool STT Set-Top Terminal STT Software Tracking Tool STT State Transition Table STT Strategic Test Tools STTL Schottky Transistor-Transistor Logic STTP SGML Tree Transformation Process STU Secure Telephone Unit STU Set-Top Unit STU Signal Transmission Unit STU Speech Transcoding Unit STU Station Termination Unit STU Subscriber Terminal Unit STU Subscriber Termination Unit STU Subscriber's Trunk Unit STU F Speech Transcoding Unit-Full Rate STU H Speech Transcoding Unit-Half Rate STUG Smalltalk Users Group STUI Service To User Information STV Digitalk Smalltalk/V STV Sprint Telecommunications Venture STV Subscription Television STWC Subscription Three-Way Calling STX Smalltalk/X STX Start of Text STX STS Cross-Connect SU ISO country code for USSR (obsolete) SU Scroll Up SU Segmentation Unit SU Served User (TETRA) SU Set Up SU Signal Unit SU Signaling Unit SU Subscriber Unit SU Super User SU32 Substitutional 3B2T SUA Software Group Unblocking Acknowledgment Signal SUA Stored Upstream Neighbor's Address SUB Subaddress Parameters SUB Subaddressing SUB SUBaddressing (supplementary service) SUB Subscript (HTML tag) SUB Substitute Character SUB Suburban SuB Systemunabhaengige Betriebsfuehrung (System-Independent Operating Technology) subRU Sub Recording Unit SUBRU SubRecording Unit SubsA Subsequent Address SUC Starter Use Case SUDS Software Update and Distribution Service SUEM SUS Element Manager SUERM Signal Unit Error Rate Monitor SUG Smalltalk Users Group SUGI Secondary User Group identity SUI Supplemenal User Identification SUI Supplementary User Identification SUID Set User ID SUIT Simple User Interface Toolkit SULTS Subscriber Line Testing System SUM Sample Unsuccessful Backward Setup Information Message SUM Software User's Manual SUMM Summary S-UMTS Satellite-UMTS SUN Sunrise SUNI Saturn User Network Interface SUNY State University of New York SUP Superscript (HTML tag) SUP SUpervisory Packet Sup Supplement SUPAC Super Authorization Code SUPERNet Shared Unlicensed Personal Radio Network SUPR Supervisor SUPV SUPerVisor SUR SMP Usage Report SUS SCE Usage Scope SUS Silicon Unilateral Switch SUS Single User System SUS Site Utilities System SUS Small Ultimate Size SUS Susended Line SUS Suspend SUS Suspend message SUS Suspend Service SUS Suspended Service SUS Suspension SUS/RES i Suspend/Resume Indicators SUSGRP Suspend service for a group of lines SUSI Simple Unified Search Interface SUSP Subscriber Usage Sensitive Pricing SUSP Subscription Usage Sensitive Pricing SUSP Suspend SUT Switch Under Test SUT System Under Test SV ISO country code for Republic of El Salvador SV SerVice sublayer SV Service Vendor SV Supervision SV Support Vessel SV System Verification SVA Shared Virtual Area SVA Supervision Amplifier SVC (Switched) Virtual Call SVC Secure Voice Communications service SVC Service Call SVC Signaling Virtual Channel SVC Supervisor Call SVC Switched Virtual Call SVC Switched Virtual Channel SVC Switched Virtual Circuit SVC Switched Virtual Connection SVCB Supervision Control Block SVCC Service Charge SVCC Service Surcharge SVCC Signaling Virtual Channel Connection SVC-CRS Switched Virtual Connection Cell Relay Service SVCD Service Code Dialing SVCI Signaling Virtual Channel Identifier SVCIA Signaling Virtual Channel Identifier A SVCIB Signaling Virtual Channel Identifier B SVCId Signalling Virtual Channel Identifier downstream SVCIup Signalling Virtual Channel Identifier upstream SVCRED SVC Redundancy SVCS Satellite Video Communication System SVD Simultaneous Voice and Data SVD Singular Value Decomposition SVD(S) Simultaneous Voice Data (Service) SVE SAP Vector Element SVGA Super VGA SVGA Super Video Graphics Array SVHOE Stratified Volume Holographic Optical Element S-VHS Super Video Home System (VHS) SVI Service Interception SVID System V Interface Definition (ATT) SVL Spare Values SVL Standard Volume Label SVN Software Version Number SVN Subscriber Verification Number SVOD Staggered Video on Demand SVP Senior Vice President SVP Surge Voltage Protector SVP Switched Virtual Path SVPC Switched Virtual Path Connection SVR Server Service SVR Supply Voltage Rejection SVR System V Release SVR2 System V Release 2 Unix SVR3 System V Release 3 Unix SVR4 System V Release 4 Unix SVRAM Synchronous VRAM SVS Select Vertical Spacing SVS Single Virtual Storage SVS Single Virtual System SVVS System V Verification Suite (AT&T) SW Short Wave (3...30 MegaHertz) SW Show Window SW Software SW Southwest SW Status Word SW Switch SW Synchronization Word SW56 Switched 56 SWA Single Wire Armour SWA Software Agreement SWA Standardization Work Area (ETSI) SWAB Standard Billing Number for WATS SWAC System-Wide Authorization Code SWACT Switch Activity SWAMI Serialized WIP And Management Information SWAN Seamless Wireless ATM Network SWAP Exchange DNs SWAP Shared Wireless Access Protocol SWAP Software Agreement Process SWB Southwestern Bell SWBD Switchboard SWBT Southwestern Bell Telephone SWC Servicing Wire Center SwC Switch Card SWCT Switch in Activity SWD Software Delivery SWDL Software Downloaded SWDL Software Downloading SWDR Single Way Dynamic Range SWEDAC Swedish Board for Technical Accredication SWER Software Error Swerr Software Error SWF Second-Window Fibre (1300 nm) SWF Short Wave Fadeout SWF Switched Fractional SWF-DS1 Switched Fractional DS1 SWFG Secondary Waveform Generator SWG Standard Wire Gauge SWG Sub-Working Group SWIFT Intelligent Switch Filtering Technique SWIFT Society for Worldwide Interbank Financial Telecommunications SWIFTNet Software Inter-company Flexible Transfer Network SWIM Super Woz Integrated Machine SWING Subscriber Wireless Network Gateway SWL Short Wave Listener SWLT Swap Logical Terminals SwMI Switching and Management Infrastructure (TETRA) SWNR Switch of Activity/Node SWOF SWitchover Operation Failure SWOP Standard Web Offset Press SWP Swap file SWP Switching Pattern SWR Standing Wave Ratio SWS Silly Window Syndrome SWS Standard Work Seconds SWT Standard Work Time SWTCH Switching System Activity SWTI Software Transfer Inhibited SWTL Surface-Wave Transmission Line SWTO Software Transfer Only SWUL Software Upload SWUL Software Up-Loading SWV Service Work Volume SWVR Standing Wave Voltage Ratio SX Simplex SXC Synchronous Crossconnect SXGA Super XGA SXIP Shadow Execute Instruction Pointer SXS Step-by-Step SxS Step-by-Step SY ISO country code for Syrian Arab Republic (Syria) SY Staff-Year SYD SYstem Data SYDR Synchronization Driver Receiver SYFL System Failure SYLK Symbolic Link SYM Symmetric SYN 1/6 character of International Alphabet No.5 SYN Synchronization SYN Synchronization signal unit SYN Synchronize SYN Synchronize Sequence Numbers flag SYN Synchronous Channel/Synchronized Cells Sublayer SYN Synchronous Idle SYN Synonym SYN SYNthesizer SYN channel SYNchronization channel SYNC Synchronization SYNC SYNChronization word (in SYN channel) SYNC SYNChronize SYNC Synchronous SYNC Synchronous Clock SYNCD SYNChronization word for D channel SYNCF SYNchronization word from Cordless Fixed part (in SYN channel) SYNCP SYNchronization word from CPP (in SYN channel) SYNT Shenyang Nortel Telecommunications SYNTRAN Synchronous DS3 Transmission SYS System SYS System File SYSADM System Administration SYSADM System Administrator SYSB System Busy SYSDOC System Level Design Document SYSGEN System Generation SysM System Maintenance SYSOP System Operator SYU Synchronization Signal Unit SZ ISO country code for Kingdom of Swaziland SZ Seizure sz String terminated by a zero byte SZC Super Zone Center SZD Seized back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S - T - U|V|W|X|Y|Z

T T reference point T Temperature T Tera (1,000,000,000,000 or 1024*1024*1024*1024) t tera (10+12) T Terminal T Terminal Transactor t time T Timer T Tip T Token Bit T Trail Termination T Trailer T Transaction T Transformer T Transmission Element T Transmit T Transparent T Transport T Transport Layer T Transport Layer Service T Trap T Trunk T Type Only T&A Toll and Assistance T&C Terms and Conditions T&C Test & Certification T&C Time and Charge(s) T&CP Transport and Control Platform T&L Terminate and Leave T&M Time and Materials T&R Tip and Ring T/A Tones and Announcements T/C True/Complement T/CAS Traffic-alert/Collision-Avoidance System (Avionics) T/D Talk/Data T/E Test and Evaluation T/R Tip and Ring T/R Transceiver T/R Transmit/Receive T/S Time Switch T1 ANSI standards committee responsible for telecommunications T1 Timer T1, LAPB Acknowledgement Timer T1 Timer T1, period of time at the end of which retransmission of a f rame may be initiated T1AG T1 Advisory Group T1DM T1 Data Multiplexer T1FP T1DM Framing Pattern T1M1 technical subcommittee to T1 responsible for internetwork OAM&P st andards T1MTC T1 Maintenance Task T1PB T1 Paddle Board T1S1 technical subcommittee to T1 responsible for standards related to service, architectures and signalling T1SS T1 Service Supervisor T1X1 technical subcommittee to T1 responsible for standards pertaining to synchronous interfaces and hierarchical architectures T1X75 X.75 Timer T1 T2 Timer T2, LAPB Response Timer T2 Type 2 node T2.0 Type 2.0 node T2.1 Type 2.1 node T200 ISDN Layer 2 Timer T200 T200P ISDN Layer 2 Timer T200 for PRI T201 ISDN Layer 2 Timer T201 T203 ISDN Layer 2 Timer T203 T203P ISDN Layer 2 Timer T203 for PRI T2X75 Timer 2 for X.75 T3 Timer T3, LAPB Idle Channel Timer T301 ISDN Layer 3 Timer T301 T301P ISDN Layer 3 Timer T301 for PRI T303 ISDN Layer 3 Timer T303 T303P ISDN Layer 3 Timer T303 for PRI T305 ISDN Layer 3 Timer T305 T305P ISDN Layer 3 Timer T305 for PRI T306 ISDN Layer 3 Timer T306 T306P ISDN Layer 3 Timer T306 for PRI T308 ISDN Layer 3 Timer T308 T308P ISDN Layer 3 Timer T308 for PRI T309 ISDN Layer 3 Timer T309 T309P ISDN Layer 3 Timer T309 for PRI T310 ISDN Layer 3 Timer T310 T310P ISDN Layer 3 Timer T310 for PRI T312 ISDN Layer 3 Timer T312 T316 ISDN Layer 3 Timer T316 T316P ISDN Layer 3 Timer T316 for PRI T320 ISDN Layer 3 Timer T320 T320P ISDN Layer 3 Timer T320 for PRI T321P ISDN Layer 3 Timer T321 for PRI T322 ISDN Layer 3 Timer T322 T322P ISDN Layer 3 Timer T322 for PRI T3POS Transaction Processing Protocol for Point of Sale T3X75 Timer 3 for X.75 T4 Type 4 node T400 Regular Interdigit Timer T400 T401 Critical Interdigit Timer T401 T402 Timer T402 T402P Timer T402 for PRI T408 ISDN Layer 3 Timer T408 T408P ISDN Layer 3 Timer T408 for PRI T5 Type 5 node T8A Trunk Module 8-Wire with Metallic Access TA Technical Advisory TA Technical Assembly (ETSI) TA Telecommunication Authority TA Telecommunications Administration (EC) TA Terminal Adapter TA Terminal Area TA Terminal Authentication TA Termination Attempt TA Test Access TA Test Alert TA Testing Accepted TA Text Alignment TA Time Advance Ta Time intervalover which the random variable STA is defined TA Timing Advance TA Toll and Assist(ance) TA Tones and Announcements TA Trade Association TA Traffic Administration TA Transferred Account TA Transistor Amplifier TA Travel Authorization TA Trouble Administration TA Trunk Amplifier TA Type Approval TA WP Technical Assembly Working Procedures (ETSI) TA96 Telecommunications Act of 1996 TAA Transfer Allowed Acknowledgement TAA Transfer-Allowed-Acknowledgement signal TAAB Type Approval Advisory Board TAAS Trunk Answer Any Station TAB Tape Automated Bonding TAB Tape-Automated Bonding (IC) TA-BA Trunk-Bridger Amplifier TABL Table TABS Talking Alternate Billing System TABS Telemetry Asynchronous Block Serial (AT&T protocol) TABXFR Table Transfer TAC Technical Area Committee (CEC) TAC Technical Assistance Center TAC Telenet Access Controller TAC Terminal Access Controller TAC Terminal Association Control TAC Test Access Card TAC Test Access Circuit TAC Test Access Control(ler) TAC Time And Charges TAC Trunk Access Control TAC Type Approval Code TACA Telecommunications Authorities Cryptographic Algorithm (USA) TACAF Terminal Access Control Agent Function TACAN Tactical Air Navigation (Military Avionics) TACC Test Access TACD Telephone Area Code Directory TACE Test Access Controller Equipment TACF Terminal Access Control Function TACS Total Access Cellular System TACS Total Access Communications System TACT Timer T-Activate TACTRAF Test Access Controller Traffic TAD Telephone Answering Device TAD Test Access Digital TAD Test Access Digroup TAD Thrust Augmented Delta TAD Time and Date TADO Touch Asynchronous Data Option TADS Target Acquisition Designation Sight (Military Avionics) TADS Traffic Administration Data System TAE Telecommunications, Americas Edition (periodical) TAE Test Access Network Equipment TAF Terminal Access Facility (NetView) TAF Terminal Adaptation Function TAFAS Test Access From Any Station TAFAS Trunk Answer From Any Station TAFI Technical Analysis and Findings Information TAG Technical Activities Guide TAG Technical Ad-hoc Group TAG Technical Advisory Group TAG Technology Action Group TAG Technology Advocacy Group TAGTMART Tag/Value Master Record Tape TAI Table Access Interface TAI Temps Atomique International TAI Temps Atomique International (International Atomic Time) TAISEL Taiwan International Standard Electronics Ltd. TAL Test Access Link TAL Tetherless Access Ltd. TAL Trigger Assignment List TalDE Taligent Development Environment TALIST Trigger Assignment List TalOS Taligent Object Services TAM Technical Assistance Manual TAM Telecommunication Access Method TAM Test Access Multiplexer TAM Timer, Active Monitor TAMI TPC Administration and Maintenance Interface TAML Tandem Matching Loss TAN Terminal Access Network (INOS-ATT) TAN Test Access Network TANSTAAFL There ain't no such thing as a free lunch TAO TCP Accelerated Open TAO Telephony Applications Object TAP Technical Analysis Platform TAP Telecommunication Application Platform TAP Telelink Applications Processor TAP Telocator Alphanumeric Input Protocol TAP Telocator Alphanumeric Protocol TAP Terminating Access Provider TAP Test Access Path TAP Test Access Point TAP Test Access Port TAP Transfer and Advancement Program TAPI Telephony Application Programming Interface TAPP Telephony Applications TApp Telephony Applications Framework tar Tape Archive TAR Technical Action Request TAR Terminating Access Record(s) TAR Total Allocated Rate TAR Translation Audit Record TARA Telecom Applications Research Alliance TARA Threshold Analysis and Remote Access (pgm, SNA) TARDIS Tariff Definition System for Network Design (IBM) TARI Tertiary Access Rights Identity TARI Tertiary ARI TARM Telephone Answering and Recording Machine TARM Telephone Answering Recording Machine TARP Target Identifier (TID) Address Resolution Protocol TARP Terminal Address Resolution Protocol TARR Test-Action Request Receiver TAS Technical Assistance Service(s) TAS Technical Assistance Support TAS Telecom Analysis System TAS Telecommunications Authority Singapore TAS Telephone Answering Service TAS Terminal-Activated Services TAS Terminating Access Service TAS Test Access Selector TAS Tones, Announcements, and Signals TAS Transceiver Antenna System TAS Trunk Answer Any Station TASC CSTA + SCAI TASC Technical Assistance and Surveillance Center TASC Telecommunication Applications for Switches and Computers TASC Telecommunications Alarm, Surveillance, and Control TASI Time Assignment Speech Interpolation (Bell Laboratories) TASM Terminal Access State Model TASM Turbo Assembler TASMAN Tasmania submarine cable TASS Trouble Analysis Subsystem TASS Trouble Analysis System TAT Terminal Application Transactor TAT Termination Attempt Trigger TAT Theoretical Arrival Time TAT Trans-Atlantic Telecommunications submarine cable TAT Trans-Atlantic Telephone TAT TransAtlantic Telephone cable TAT Transit Access Termination TAT Translations Architecture Team TAT Turn-Around Time TATC Traffic And Test Controller TATS Test and Traffic Simulator TATS Test and Traffic System TATS Traffic And Test System TAU Test Access Unit TAU Test and Alarm Unit TAU Time Assignment Unit TAUT Terminal Authentication TAXI Transparent Asynchronous Transmitter/Receiver Interface TAZ Tool-Activated ZIF TB Broadband T-Interface TB Talk Battery TB Task Block TB Technical Body (ETSI) TB Technical Bureau (EWOS) Tb Technisches Betriebsburo (Technical Operation Office) TB Terabyte TB Terminal Balance TB Terminal Block TB Time Base TB Toll Break In TB Toolbar TB Transmission Buffer TB Transparent Bridge TB Transparent Bridging TBA To Be Added TBAF Terminating BAF TBB T-Link Building Block TBB Transborder BroadBand TBC Tab Clear TBC Terminating Basic Call TBC Time Base Corrector TBC Time Based Charging TBC Time-Base Corrector (Video) TBC Token Bus Controller TBC Token Bus Controller (IEEE 802.4) TBC Traffic Bearer Control TBC Trunk Bearer Circuit TBCD Telephony Binary Coded Decimal TBCM Terminating Basic Call Model T-BCM Terminating Basic Call Model TBCP Tagged Binary Communications Protocol TBCS Terminating Basic Call Service TBCT Two B-Channel Transfer TBD Temporary Bundler/Debundler TBD To Be Determined TBD To Be Developed TBD Transmit Buffer Descriptor TBE Time-Base Error TBE Transient Buffer Exposure TBETSI Technischer Beirat fur Normungsfragen des ETSI TBH To Be Hired TBHC Terminating Basic Half Call TBI Toll Barge-In TBI Toll Break-In TBIA Translation Buffer Invalidate All Tbid cordless portable part base identity code detect from CHM Time (19 ms) TBINK Technischer Beirat fur Nationale und Internationale Koordination TBIS Translation Buffer Invalidate Single Tbit/s Terabits per Second TBL Technik der Betriebslenkung (Technology for Operation Control) TBL Time Base Lower Register TBL Trouble TBM Test Bed Manager TBM Test Bus Master TBM Transceiver Baseband Module TBM Transport Bandwidth Manager TBMLCIS Test Bed Manager Local Configuration Information Server TBMRM Test Bed Manager Resource Manager TBN Toolbar Notification TBO Terminating Billing Option TBO Total Benefit of Ownership TBOS Telemetry Byte-Oriented Serial Tbps Terabits Per Second TBR Technical Basis for Regulation (ETSI) TBR Timer, BCN Receive TBR Transport Block Reject TBRL Terminal Balance Return Loss TBRL Test Balance Return Loss TBR-RT TBR-Requirements Table (ETSI) TBS Terminating Basic Session TBS To Be Specified TBS Turner Broadcasting System TBSG Transparent Bridge/Source Route Gate Bridge TBSTATE Toolbar State TBSTYLE Toolbar Style TBT Timer, BCN Transmit TBU Time Base Upper Register TBU Transmit Baseband Unit TBUS Transaction Bus T-BUS Transaction Bus TBUSA T-Bus Access TBV Technik Betrieb Vermittlungstechnik (VNK-OAM organization) TBV Technischer Betrieb Vermittelnder Netzknoten (OAM Organization Tec hnical Operation Switch) TC ISO country code for Turks and Caicos Islands TC Table Control TC Tandem Completing TC Tandem Connecting TC Tcl Compiler TC Technical Committee TC TeleCommand TC TeleCommunications TC Telematic Command TC Temperature Coefficient TC Temperature Compensation TC Terminal Capability TC Terminal Concentrator TC Terminal Congestion TC Terminal Controller TC Tertiary Center TC Test Call TC Test Case TC Test Code TC Test Connector TC Testcase TC Testing Complete TC Time-Consistent TC Toll Center TC Toll Completing TC Topology Change TC Touch Calling TC Traffic Channel TC Traffic Controller TC Transaction Capabilities TC Transcoder TC Transfer of Control of Call (TETRA) TC Transit Center TC Translation Control Register TC Transmission Control TC Transmission Convergence TC Transmission Convergence sublayer TC Transport Connection TC Treatment Controller TC Trunk Channel TC Trunk Code TC Trunk Concentrator TC Trunk Conditioning TC Trunk Control(ler) TC Turbo C TCA Terminal Call Appearance TCA Threshold Crossover Alert TCA Transfer Cluster Allowed message TCA Transfer Cluster Allowed signal TCAF Terminal Access Control Function TCAM Telecommunications Access Method (IBM) TCAP Transaction Capabilities Application Part (SS7) TCAP Transaction CAPability TCAPI Test Case Application Programming Interface TCAPNM TCAP Calling Name Delivery TCAR Test Case Attributes and Results TCAS T-Carrier Administration System TCB Task Control Block TCB Technology Center Bodensee TCB Test Case Block TCB Transaction Control Block TCB Transmission Control Block TCB Trusted Computing Base TCBC Changeback Control TCBH Time Consistent Busy Hour tcbuild Test Case Builder TCC Target Cells and Connections TCC Technical Committee Chairmen co-ordination (ETSI) TCC Technology Control Center TCC Telecommunications Coordinating Committee TCC telemetry and telecommand TCC Telephone Country Code TCC Telephony Country Code TCC Test Call Controller TCC Test Case Convert TCC Thomas Conrad Corp. TCC Through-Connected Circuit TCC Transmission Control Character TCC Transmission Control Code TCC Transmit Cell Count TCCAN Telephone Credit Card Account Number TCCB Technical Coordination Consultative Board (CEC) TCCC Technical Committee on Computers and Communication TCCD Total Call Connection Delay TCCF Telephone Company of Central Florida TCCI TOPS CCI TCCN Telephone Credit Card Number TCCO Temperature Compensated Crystal Oscillator TCD Technical Cooperation Department TCE Telephone Company Engineered TCE Terminal Control Element TCE Thermal Coefficient of Expansion TCE Transit Connection Element TCE Transmission Control Element TCE transmissions control element (SNA) TCE Transportation Connection Element TCF TEAM Communication Facility TCF TEAM Communications Facility TCF Training Check Frame TCF Transparent Computing Facility Tcfp cordless fixed part processing Time (18 ms max) TCFP Test Case First Pass TCFP Time-Critical Floating-Point TCG Teleport Communications Group TCG Test Call Generator TCG Time Code generator TCGEN Test Case Generator TCGN Terminal Configuration TCGN Terminal Configuration Number TCH Telematic Command Header TCH Test CHannel TCH Traffic Channel TCH/D Traffic Channel-Data TCH/F Full rate Traffic CHannel TCH/F Traffic Channel/Full Rate TCH/F2.4 Full rate TCH for <=2.4kbit/s user data TCH/F2.4 Traffic Channel/Full Rate (2.4 kbit/s) TCH/F4.8 Full rate TCH for 4.8kbit/s user data TCH/F4.8 Traffic Channel/Full Rate (4.8 kbit/s) TCH/F9.6 Full rate TCH for 9.6kbit/s user data TCH/F9.6 Traffic Channel/Full Rate (9.6 kbit/s) TCH/FS Full rate Traffic CHannel for Speech TCH/FS Traffic Channel/Full Rate Speech TCH/H Half rate Traffic CHannel TCH/H Traffic Channel/Half Rate TCH/H2.4 Half rate TCH for <=2.4kbit/s user data TCH/H2.4 Traffic Channel/Half Rate (2.4 kbit/s) TCH/H4.8 Half rate TCH for 4.8kbit/S user data TCH/H4.8 Traffic Channel/Half Rate (4.8 kbit/s) TCH/HS Half rate Traffic CHannel for Speech TCH/HS Traffic Channel/Half Rate Speech TCH/S Traffic Channel-Speech TCHT Terminating Charge Treatment TCI Tele-Communications Inc. TCI Tele-Communications, Inc. TCI Test Case Interpreter TCI Test Case Command Interpreter TCI Test Case Interpreter TCI Time Change Indicator TCI Tool Command Interface TCI Transceiver Control Interface TCIB Table of CIB Pointers TCID Test Case Identifier TCID Transport Connection Identifier TCIF Telecommunications Industry Forum TCL Terminal Coupling Loss TCL Test Case Coding Language TCL Testcase Coding Language TCL Toll Circuit Layout TCL Tool Command Language TCL Transverse Conversion Loss Tcl/Tk Tool Command Language/Toolkit TCLAN Test Case Language TCLR Toll Circuit Layout Record TCLw Weighted Terminal Coupling Loss TCM Tandem Connection Maintenance TCM Tandem Connection Monitoring TCM Telecommunications Manager TCM Telematic Command Message TCM Temperature Compensation Module TCM Terminal to Computer Multiplexer TCM Terminating Call Model TCM Test Coordination Message TCM Time Compression Multiplex TCM Time Compression Multiplexed TCM Time Compression Multiplexing TCM Topology Configuration/Manipulation TCM TOPS Connection Manager TCM Transactor Communication Management TCM Transactor Configuration Management TCM Transit Connection Manager TCM Traveling Class Mark TCM Trellis-Coded Modulation TCMA Tunable-Channel Multi-Access TCMF Touch Calling Multifrequency TCN Throughput Class Negotiation TCN Timer Counter TCN Travel Card Number TCN1 Timer Counter 1 TCN2 Timer Counter 2 TCNI Translated Called Number Indicator TCNS Thomas-Conrad Network System TCNZ Telecom Corporation of New Zealand Ltd. TCO Terminating Central Office TCO Total Cost of Ownership TCOC Changeover Control TCOC Terminating Central Office Code TCODE Testcase CODE TCOEFF Transform Coefficients TCON Terminal Congestion message TCOS Telepoint Class Of Service TCOS Trunk Class of Service TCP Tape Carrier Package TCP Tape Carrier Packaging TCP Telepoint Control Part TCP Termination Connection Point TCP Test Coordination Procedure(s) TCP Transfer Cluster Prohibited message TCP Transfer Cluster Prohibited signal TCP Transmission Control Protocol TCP Transmission Control Protocol (TCP/IP-DoD) TCP Trigger Check Point TCP Trigger Control Point TCP/IP Transmission Control Protocol/Internet Protocol TCPA Telephone Consumer Protection Act TCPB Testcase Call Processing Busy TCPCOM TCP/IP Communication Tool TCPH TCP Header TCP-IP Transmission Control Protocol- Internet Protocol TCPS STEAM Preprocessor TCQ Trellis-Coded Quantization TCQAM Trellis-Coded Quadrature Amplitude Modulation TCR Channel Reset Timer TCR Tagged Cell Rate TCR Temperature Coefficient of Resistor TCR Test Command Response (IEEE 802.2/network loopback test) TCR Test Conformance Report TCR Time Counter Register TCR Timer Capture Register TCR Touch Calling Receiver TCR Transfer Cluster Restricted message TCR Transfer Cluster Restricted signal TCR Transient Call Register TCR Translation Control Register TCR1 Timer Capture Register 1 TCR2 Timer Capture Register 2 TCRC Controlled Rerouting Control T-CREF Deutsche Telekom Connection Request Refuse message TCRF Transit Connection Related Function(s) TCRS Table Control Rule Set TCRTR Technical Committee Reference Technical Report (ETSI) TCRun Test Case Run TCS Tata Consultancy Services TCS Telex Computer Service TCS Terminal Contention Service TCS Terminating Call Screening TCS Total Communications System TCS Transmission Connection Segment TCS Transmission Convergence Sublayer TCS Transport Control Subsystem TCS Travelling Current Source (LEMP) TCS TRIBUNE Control Server TCSEC Trusted Computer System Evaluation Criteria TCT Toll Connecting Trunk TCT Trunk Continuity Test TCTR Technical Committee Technical Report (ETSI) TC-TR Technical Committee Technical Report TCTS Trans-Canada Telephone System TCTS Transport Conformance Test System TCU Technical Center Unit TCU Teletypewriter Control Unit TCU Terminal Coax Unit TCU Terminal Control Unit TCU Testcase Coding Utility TCU Traffic Service Group Control Unit TCU Trans Coding Unit TCU Transcoder Unit TCU Transmission control unit (IBM) TCU Trunk Coupling Unit TCVN Technical Committee on Information Technology TCX Test Case Execution tcx Transparently Compressed Executables TCXO Temperature Compensated Crystal Oscillator tcxp Test Case Execute Package TD ISO country code for Republic of Chad TD Table Data (HTML tag) TD Table Driven TD Tear Down TD Temporal-Difference TD Temporarily Disconnected TD Temporary Document TD Terminal Digit(s) TD Termination Dialog TD Test Desk TD Test Distributor TD Test Driver TD Testing Done TD Time Division TD Tone Detect TD Transmit Data TD Transmitted Data TD Transmitter/Distributor TD Transparent Data TD Tunnel Diode TD Turbo Debugger TD2 Timer TD2 TD3 Timer TD3 TDA Telecoms Dealers Association TDA Toll Dial Assistance TDA Transdata Diagnostics Aids (Siemens) TDA Tunnel Diode Amplifier TDAB Telecommunication Development Advisory Board TDAS Traffic Data Administration System TDB Task Database TDB Telecommunications Development Bureau TDB Temporal Database TDB Ticketing Device Buffer TDB Turbo Debugger TDC Television (Signal) Down-Converter TDC Telex Destination Code TDC Terrestrial Digital Circuit TDC Transient Data Channel TDCS Traffic Data Collection System TDD Table Distribution Daemon TDD Telecommunications Device for the Deaf TDD Time Division Duplex TDD Time Division Duplexing TDDP 10-Digit Dialing Plan TDE Time-Domain Equalization TDED Trade Data Element Directory (UN) TDELAP ISDN Layer 3 Timer TDELAY for PRI TDELAY ISDN Layer 3 Timer TDELAY TDEV Time Deviation TDF Test Data File TDF Trap Definition File TDF Trunk Distribution Frame TDG Test Data Generator TDG Transmit Data Gate TDHS Time-Domain Harmonic Scaling TDI Trade Data Interchange (UN) TDI Transit Delay Indication TDI Transit Delay Unit TDI Transport Device Interface TDI Transport Driver Interface TDIL Test and Data Integration Layer TDL Tau-Dither Loop TDL TCAP Description Language TDL Transition Detect Latch TDL Tunnel TDM Table Distribution Manager TDM Thresholded Digital Measurement TDM Time Division Multiplex TDM time division multiplex TDM Time Division Multiplexed TDM Time Division Multiplexer TDM Time Division Multiplexing TDM Transceiver Demodulator Module TDM Translation Description Manual TDMA Time Division Multiple Access TDMC time-division multiplex configuration TDMS Time Division Multiplex System TDMS Traffic Data Management System TDMS Transmission Distortion Measuring Set TDMS Transmission Distortion Measuring System TDMTT Tandem Tie Trunk TDN Toll Denial TDN Toll Denied TDN Toll Deny TDO Toll Denied With Operator TDOA Time Difference of Arrival TDP Tag Distribution Protocol TDP Telocator Data Protocol TDP Transmission Development Process TDP Trigger Detection Point TDP-N Trigger Detection Point- Notification TDP-R Trigger Detection Point- Request TD-PSK Time-Differential Phase Shift Keyed TDR Terminal Digit(s) Requested TDR Time Domain Reflectometer TDR Time Domain Reflectometry TDR Time-Dependent Routing TDRS Traffic Data Reports Service TDRSS Tracking and Data Relay Satellite System TDS Tabular Data Stream TDS Test-Case Definition System TDS Traffic Data System TDS Transit Delay Selection TDS Transparent Data Service TDS1 Timer 1 for ISDN Display TDS2 Timer 2 for ISDN Display TDS3 Timer 3 for ISDN Display TDSAI Transit Delay Selection and Indication TDSI Transit Delay Selection and Indication tDSPI Turbo DSP Island TDT Target Designation Transmitter TDT Transfer Data Test (D) TDTC Telrad Digital Trunk Controller TDTC Turkey Digital Trunk Controller TDU Telesoftware Data Unit TDUI Test Driver User Interface TDV Toll Diversion TDW Turbo Debugger for Windows TE Table Editor TE Terminal TE Terminal Eliminator TE Terminal Equipment TE Terminal Equipment (ETSI TC) TE Terminating Equipment TE Test Environment Available TE Test Equipment TE Thermoelectric TE Threshold Extension TE Transit Exchange TE Translation Enable TE Transmission Efficiency TE Transverse Electric TE Transverse Electric wave TE Trunk Expansion TE1 Terminal Equipment- Type 1 TE1 Terminal Equipment 1 TE1 Terminal Equipment type 1 TE2 Terminal Equipment- Type 2 TE2 Terminal Equipment 2 TE2 Terminal Equipment type 2 TEA Test Escape Analysis TEAM Test Engineering, Analysis, and Management TEAM Test Execution, Administration, and Management TEAM Text Execution and Administration Management TEB Tape Error Block TEB Thread Environment Block TEC Tape Emulation Controller TEC Technical Education Center TEC Technical Education Council TEC Telephone Engineering Center TEC Total Electron Content TEC Training and Education Center TEC Transceiver Echo Canceller (ISDN) TEC Transversal Echo Canceller TEC Turbo Echo Canceller TECS Thorn EMI Computer System TEd Table Editor TED Threshold Extension Demodulator TED TriTeal Enterprise Desktop TEDC Test Environment Development Center TEDD Telecommunications Electronic Document Delivery TEDIS Trade Electronic Data Interchange Systems TEDP Telecommunications Executive Development Program TEF TMN External Function TEGFET Two-dimensional Electron-Gas Field Effect Transistor TEHO Tail-End Hop-Off TEI Terminal Endpoint Identifier TEI Terminal Equipment Identifier TEI Terminal Equipment Interface TEI TETRA Equipment Entity TEI Text Encoding Initiative TEK Tektronix TEL Telephone TelCo Telephone Company TelePATH Telecommunications Provisioning And Translations Hub TELEX EXchange TELEX Teletypewriter Exchange Service TELMEX Telefonos de Mexico TELN Telnet TELNO Telephone Number TELPAL Tel Aviv-Palo submarine cable TELRIC Total Element Long Run Incremental Cost TELSAM Telephone Service Attitude Measurement TelSIG Telecommunications Special Interest Group TELV Telecommunications Extra Low Voltage TEM Transition Encoded Modulation TEM Transmission Electron Microscopy TEM Transverse Electric Mode TEM Transverse Electro-Magnetic TEM Transverse Electromagnetic wave TEMA Telecommunication Engineering and Manufacturing Association TEMP Temporary TEMPEST TEMPorary Emission and Spurious Transmission TEMS Transport Element Management System TEN Trans-European Network TEN Transit Exchange Node TENT TE/NT Adaptor TEO Terminating End Office TEP Task group for Equipment Practice TEP Terminal Emulation Processor (DDN-DoD) TER Timer Event Register TER Timer Expiry Response TER Timer, Error Report TER1 Timer Event Register 1 TER2 Timer Event Register 2 TERI Terminal Interface TERM Termination TERM Terminator TERM_CAP Terminal Capabilities Information Element TermFS Full Screen Terminal TERMIDTYP Terminal Identification Type TERML Maximum Number of Terminals TermLM Line Mode Terminal TERMSCAN Terminating Scanning Threshold TES Test Execution System TES Time Encoded Speech TES Toll Essential TES Toll Essential Service TES Transportable Earth Station TESE Telefonische Seelsorge (Spiritual Welfare Calls, Helplines) TESS Terminating Service Suspension Treatment TESS The Exponential Security System TETRA Trans-European Trunked Radio TEUT Terminal Equipment Under Test TEV Terminal Equipment Validation TEX Tau Epsilon Chi TEX Test Executive TEX Transit Exchange Tf cordless fixed part Handshake Period TF ISO country code for French Southern Territories TF Terminal Function TF Test Case First Pass TF Test Finished TF Test Frame TF Thin Film TF Tie Facility TF Transmission Facility TF Trap Flag TF Trunk Frame TFA Terminal Function Area TFA TransFer Allowed TFA Transfer Allowed message TFA Transfer Allowed signal TFAN Traffic Analysis TFAS Transmit Frame Acquisition and Synchronization TFC Test Functional Component TFC Toll-Free Calling TFC Traffic TFC Traffic Flow Control TFC Transfer Controlled message TFC Transfer Controlled signal TFC Transmission Fault Control TFCR Transmit Function Code Register TFDL Transmit FDL Register TFE Tetra-Fluoro-Ethylene (Cable Insulation) TFEL Thin-Film Electro-Luminescence (Flat Displays) TFG Technology Focus Group TFH Terminal Facilities Identifies TFI T-Bus Frame Interface TFI Temporary Frame Identity TFI Terminal Facility Identifier TFIG ETSI high level Task Force Implementation Group TFM Transfer Message TFM Transfer-Prohibited and Transfer-Allowed messages TFMI Information TFMS Trunk and Facilities Maintenance System TFO Terminating Fault Option TFO Toll Fault Option TFOV Total Field Of View TFP Transfer Prohibited message TFP Transfer Prohibited signal TFR Theoretical Final Route TFR Transfer Restricted message TFR Transfer Restricted signal TFRC Forced Rerouting Control TFS Technical Framework Specification TFS Text Formatting System TFS Traffic Forecasting System TFS Traffic Subsystem TFS Translucent File System TFS Transmit Frame Synchronization TFS Trunk Forecasting System TFS Turbo Profiler Statistics File TFT Thin-Film Transistor TFT Thin-Film Transistor (Matrix) (LCD Flat Displays) TFTP Television Facility Test Position TFTP Trivial File Transfer Protocol TFTS Terrestrial-Flight Telecommunications System TFU Timing and Frequency Unit TG ISO country code for Togolese Republic (Togo) TG Tandem Completing TG Task Group TG TeleGram TG Tone Generator TG Transcoding Gain TG Translations Guide TG Transmission Group TG Trunk Group TGA Targa Image File TGA Traffic Generator Analog TGC Tone Generator Circuit TGC Transmission Group Control (SNA) TGC Transmitter Gain Control TGF Through Group Filter TGGR Translations Guide Generic Requirements TGID Trunk Group Identification TGIF TCX Graphical Interface TGM Trunk Group Multiplexer TGMN Trunk Group Member Number TGMS Third-Generation Mobile System TGMU Trunk Group Member Usage TGN Trunk Group Number TGNT Tong Guang-Nortel TGO Telecom Graphics Object TGO Telecommunications Graphic Objects TGO Test Group Objectives TGS Ticket-Granting Server TGS Ticket-Granting Service TGS Transportable GSM Switch TGSR Terminal Group Station Restrictions TGSR Trunk Group Service Request TGT Ticket-Granting Ticket TGTBR Trunk Group Type By Rate TH ISO country code for Kingdom of Thailand TH Table Heading (HTML tag) TH Terminal Handler TH Test Head TH Testhead TH Threshold TH Time Hopping TH Transmission Header TH Transport Header THA Testhead Agent THAPI Threaded API THB Temperature-Humidity-Bias (IC-Testing) THC Terminating Half-Call THC Test Head Controller THCL TestHead Communication Layer THD Attendant Console Through Dialing THD Total Harmonic Distortion THD+N Total Harmonic Distortion Plus Noise THDATA Test Head Data THDBH Ten High Day Busy Hour THF Tremendously High Frequency THG Test Head Group THI Test Head Interface THIA TestHead Independent Access THID Throughput Class Indication of D-Channel THL Trans-Hybrid Loss Thlost Link Re-establish time (10 s) THP Terminal Handler Process THP Test Head Peripheral THP TestHead Proxy thr Thread THR Threshold THT Test Head Terminal THT Timer, Holding Token THT Token Holding Time(r) THTP Test Head Test Position Thx Thanks THz Teraherz TI Telecommunications Industry TI Terminal Interface TI Test Initiator TI Texas Instruments TI Time TI Time Interval TI Timer Identifier TI Timing Interval TI Timing/Timer Variation TI Transaction Identifier TI Trunk Interface TIA Technical Information Agreement TIA Telecommunications Industry Association (US) TIA Thanks In Advance TIA The Internet Adapter TIAG Telecommunications Industry Advisory Group TIB Tag Information Base TIB Technical Information Bulletin TIC Table Integrity Checker TIC Tandem InterLATA Connecting TIC Target Instruction Cache TIC Telecom IC TIC Token Interface Coupler TIC Token ring Interface Coupler (IBM) TIC Trace Interrupt Control(ler) TIC Transport Interconnection Charge TIC Transport Interface Card TICR TPU Interrupt Configuration Register TICS TOPS InterLATA Carrier Service TICT Tandem InterLATA Connection Trunk TID Target Identification TID Target Identifier TID Task ID TID Technical Information Document TID Telefonica Investigacion y Desarrollo TID Terminal Identification TID Terminal Identifier TID Time Interval Difference TID Transaction Identifier TID Type ID TID/SID Target Identifier/Source Identifier TIDE Traffic Information Distributor and Editor TIDF Trunk Intermediate Distribution Frame TIDR Transfer Identity Result TIDU Transport Interface Data Unit TIE Telecommunications (International Edition) (periodical) TIE Terminal Interface Equipment TIE Time Interval Error TIE2WAY Tie Trunk 2-Way Traffic TIES Telecom Information Exchange Server TIES Telecommunication Information Exchange Services TIETIN Tie Trunk Inward Traffic TIETOUT Tie Trunk Outward Traffic TIF Tagged Image Format File TIF Telephone Influence Factor TIF Terminal Interface TIF Text Interchange Format TIFF Tag Image File Format TIFF Tagged Image File Format TIFN Telephony Interface Node TIFO Text Interchange Format TIG Telecommunications Industry Group TIG Telegram Identification Group TIG TMOS IntraWeb Gateway TIG Topology Information Group TIGA Texas Instruments Graphics Architecture TIH Terminal Information Handler TII Technology Independent Interface TIIAP Telecommunications and Information Infrastructure Assistance Progr am TILS Technology and Information, Learning Solutions TIM T1 Interface Module TIM Telecommunications Industry Markup TIM Telepoint Subscriber Identification Module TIM Terrestrial Interface Module TIM Test Information Management TIM Timestamp TIM TNM Integration Module TIM Traffic Indication Map TIM Transaction Information Manager TIM Transient Intermodulation TIM Transmitter Intermodulation TIMPC T1 Interface Module Paddle Card TIMS Test Information Management System TIMS Transmission Impairment Measurement System (Telecom.) TIMS Transmission Impairment Measuring Set TIMS Transmission Impairment Measuring System TIN Telekom Information Network TIN Test Information TiN Titanium Nitride TIN Triangulated Irregular Network TINA Telecommunications Information Networking Architecture TINA-C Telecommunciations Information Networking Architecture Consortium TINF Terminating NPA-NXX Information TINR Transfer Initiate Result TINSP Timer T-INSPECT TINT Test Integration Team TIO Test I/O TIOC Technology Integration and Operations Center TIP Terminal Interface Processor TIP terminal interface processor (ARPANET) TIP Transaction Internet Protocol TIP Transition in Progress TIR Terminal Imaging Radar (US Military Avionics) TIR Total Internal Reflexion TIREM Terrain Integrated Rough Earth Model TIRKS Trunks Integrated Record Keeping System TIROS Television and InfraRed Operational Satellite TIRR True Intermediate Reroute TIS Technical Information Session TIS Technical Information Sheets (UK) TIS Terminating International Switch TIS Traffic Information Service TIS Trusted Information Systems Inc. TISI Thai Industrial Standards Institute T-ISUP Deutsche Telekom ISUP TITO Talk-In/Talk-Out TIU Telemetry Interface Unit TIU Terrestrial Interface Unit TIU Trunk Interface Unit TIU Trusted Interface Unit TIVR Transfer Invoke Result TJ ISO country code for Tajikistan TJ Terminating Junctor TJA Telecommunications Journal of Australia (periodical) TJF Test Jack Frame TK ISO country code for Tokelau Tk Tcl-based Toolkit TK Token TK Trunk TKB Task Builder TKCS Terminating Key Code Screening TKCV Trunk Conversion TKO Trunk Offer TL Technische Lieferbedingungen (Technical Conditions of Supply) TL Telecom Layer TL Telecommunication Laboratories TL Telephony Layer TL Test Line(s) TL Tie Line TL Transit Link TL Transmission Level TL Transmission Link TL Transmit Leader TL Transport Layer (OSI) TL Wake-Up Tone from LT TL1 Test Language 1 TL1 Transaction Language 1 TL-1 Transaction Language 1 TLA Three Letter Acronym TLAC Link Availability Control TLAN Test Language TLB Terminal Linkage Block TLB Translation Lookaside Buffer TLB Type Library TLBS Terminal Linkage Block Structure TLC Telecommunication TLC The Learning Channel TLC Trunk Logic Circuit TLD Telephone Line Doubler TLD Top Level Design TLD Top Level Domain TLD Transactor Level Design TLDN Temporary Local Directory Number TLDP Technology Leadership Development Program TLE Terminal Local Exchange TLF Trunk Link Frame TLFF Technical Level Feeders Forum TLFF/CC Technical Level Feeders Forum Conformance and Certification TLG Technical Liaison Group (EWOS) TLGC Turkey Line Group Controller TLI Transmission Link Interface TLI Transport Layer Interface (UNIX) TLI Transport Level Interface TLK Talk(ing) TLL Transmit Loop Loss TLLI Temporary Logical Link Identity TLM Team Lab Manager TLM Trouble Locating Manual TLn Teilnehmer (Subscriber) TLNS Terminating Line Number Screening TLP TDOA Location Processor TLP Terminating Line Privileges TLP Transmission Level Point TLP Trouble Locating Procedure TLP Trouble Locating Process TLPU Telecommunications Line Protector Unit TLR Terminal Location Register TLR Toll Line Release TLS Terminating Line Select(ion) TLS Thread Local Storage TLS Transport Layer Security TLT Technological Lead Time TLT Test Line Test TLTC Telrad Line Trunk Controller TLTC Turkey Line/Trunk Controller TLTP Trunk Line Test Panel TLU Terminating Line Unit TLV Type, Length, and Value TLV Type-Length-Value TLWE Transmit Lower Window Edge TLWS Trunk and Line Work Station TLX Telex TM (Registred) Trade Mark TM ISO country code for Turkmenistan TM Tape Mark TM Tapemark TM Team Manager TM Technical Manual TM Technical Memorandum TM Telemetry TM Terminal Mobility TM Terminal Multiplexer TM Terminating Marker TM Test Mode TM Time Modulation TM Trade Mark TM Trademark TM Traffic Management TM Traffic Manager TM Transaction Manager TM Transaction Module TM Transactor Design Model TM Transfer Mode TM Transition Module TM Transmission and Multiplexing TM Transmission and Multiplexing (ETSI TC) TM transmission header (SNA) TM TransMission sublayer TM Transparent Mode TM Transverse Magnetic TM Transverse Magnetic wave TM Trunk Module TM2 Trunk Module, 2-Wire TM20 ISDN Layer 2 Timer TM20 TM4 Trunk Module, 4-Wire TM8 Trunk Module, 8-Wire TMA Telecommunications Managers Association (UK) TMA Traffic Management Agent TMA Trunk Module Austria T-MAFR Timing Modified Anarchy Flood Routing (protocol) TMAP Telephony Mapper TMART Transfer Master Record Tape TMAS Transport Maintenance and Administration System TMB Terminal Make-Busy TMB Trunk Module Broadband TMC Telecom Microelectronics Centre TMC The Movie Channel TMC Thinking Machines Corporation TMC Timeslot Management Channel TMC Transmission Maintenance Center TMCU TMS Control Unit TMDB Terminal Mobility Database TMDF Trunk Main Distributing Frame TM-DS0A DS0-A Transition Module TME Telocator Message Entry Protocol TME Terminal Management Environment TME Test Manufacturing Engineering TME Tivoli Management Environment TME Trunk Module Equipment TMF Telecommunications Modeling Framework TMF Tivoli Management Framework TMF Trunk Maintenance Files TMG Transit Message TMI Telephone Multimedia Interface TMI TETRA Management Entity TMI Trunk Monitoring Identifier TMIS Telemanagement Information System (Telwatch) TML Tandem Matching Loss TML Telecommunications Modeling Language TML Terminating Matching Loss TML Thermal Multilayering TML Transaction Management Layer TMLA Trademark License Agreement TMM Terminal Mobility Manager TMM Transmission Monitoring Machine TMN Telecommunications Management Network TMO Thermo Magnetic Optical disk TM-OC3c OC-3c Transition Module TMOS Telecommunications Management and Operations Support TMOS Telecommunications Management Operations System TMP Temporary TMP Terminal Monitor Program TMP Test Management Protocol TMP Theoretical Midpoint TMP Transmission Maintenance Point TM-PDU Test Management PDU TMP-IL Transmission Maintenance Point- International Line TM-PSE Power/SCSI/Ethernet Transition Module TMR Timer Mode Register TMR Timer Utility TMR Total Measured Rate TMR Requirement(s) TMR TransMitteR TMR Triple Modular Redundancy TMR Triple Modular Redundant TMR1 Timer Mode Register 1 TMR2 Timer Mode Register 2 TMRP Transmission Medium Requirement Prime TMRS Traffic Measuring and Recording System TMS Telecommunications Management System TMS Telecommunications Message Switch TMS Test Management System TMS System TMS Time Management System TMS Time-Multiplexed Switch TMS Time-Multiplexed Switching TMS Timing Monitoring System TMS TOPS Message Switch TMS Transmission Measuring Set TMSI Temporary Mobile Station Identity TMSI Temporary Mobile Subscriber Identifier TMSI Temporary Mobile Subscriber Identity TMSU TMS Unit TMT Traffic Management TMT Treatment Utility TMTC TeleMetry and TeleCommand TMTP Tree-Based Multicast Transport Protocol TMU Transceiver Microwave Unit TMU Transmission Medium Used TMU Transmission Message Unit TMUX Trans-MUltipleXer TMux Transport Multiplexing Protocol TMW TeleManagement World TN ISO country code for Republic of Tunisia TN Telecommunications Network TN Telenetworks TN Telephone Number TN Terminal Number TN Timeslot Number TN Tone TN Transaction Number TN Transit Network TN Transport Network TN Trunk Number TN Twisted Nematic (LCD) TN Type of Number TN U.S. postal code for Tennessee TN Wake-Up Tone from NT TN/NPI Type of Number and Numbering Plan Indicator TNA Telematic Networks Between Administrations TNA Telex Network Adapter TNAE Telecommunications (North American Edition) (periodical) TNAME Timer T-Name TNAS Telecommunications Network Application System (Unisys) TNAT Terminating No Answer Timer TNB Third Number Billing TNC Transit Network Capability TNC Transit Node Clock TNC Transport Network Control TNDS Total Network Data System TNDS/TK Total Network Data System/Trunking TNE The Nortel Edge TNEF Transport Neutral Encapsulation Format TNFE Twisted Nematic Field Effect TNI Telecommunications Network Interface TNI Trunk Number Identification TNI Trusted Network Interpretation TNIC Transit Network Identification Code TNIR TransportNode Information Repository TNL Terminal Net Loss TNM Total Network Management System TNM Traffic Network Management TNM Trunk Network Model TNMP Telecommunications NM Program (DEC) TNMS Transport Node Management Systems TNN The Nashville Network TNN Transport Network Node TNN Trunk Network Number TNO Text Number (number of selected text) TNOP Total Network Operations Plan TNOS Telephone Network Operating System TNP Toll Network Protection TNPB TransportNode Program Book TNPP Telecator Numeric Paging Protocol TNPP Telocator Network Paging Protocol TNS Target Network Structure TNS Total Network Solutions TNS Total Network Surveillance TNS Transaction Network Service TNS Transit Network Selection TNS Transit Network Selector TNS Trusted Network Systems TNS/I Transit Network Selection/Identification TNSTAAFL There's no such thing as a free lunch TNT Timer, No Token TNT Turner Network Television TNV Telecommunication Network Voltage TNX Thanks TO ISO country code for Kingdom of Tonga TO Tandem Office TO Tandem Originating TO Technical Order TO Telecommunications Operator TO Test Object TO Time Out TO Timeout TO Toll Office TO Tone Only TO Traffic Office TO Traffic Order TO Transistor Outline (Package) TOA Table of Authorities TOA Threshold of Audibility TOA Time Of Arrival TOA Type Of Address TOA/NPI Type of Address/Numbering Plan Identifier TOC Table of Contents TOC Telepoint Operator Code TOC Television Operating Center TOC Television Operating Centre TOC Trunk Operations Center TOCA Timing Output Card TOCC Technical and Operational Control Center TOCC Technical and Operational Coordination Center TOCC Transponder Operations Control Centre (INTELSAT) TOD Task Oriented Documentation TOD Time Of Day TOD Time Of Delivery TODM Telecommunications Object Data Management TODR Time-of-Day Routing TOF Time Out Factor TOF Top Of File TOF Top Of Form TOF Total Operation Failure TOF transfer overhead factor TOFC Terminating Office TOH Traffic Overhead TOH Transport Overhead TOHP Transmit Overhead Processor TollBP Toll Bypass TOLLRST Toll Restriction TOLR Toll Restricted TOLR Transmit Objective Loudness Rating TOLR Transmitting Objective Loudness Rating ToME Topology Management Environment TON Type of Number TON Type Of Number TONESYN Tone Synthesizer TONICS Telephone Operations Network Integrated Control System TONICS TelOps Network Integrated Control System TOP Table Of Pages TOP Task Oriented Practice TOP Task Oriented Procedure TOP Technical and Office Protocol TOP Technical/Office Protocol TOP Transaction-Oriented Protocol TOPAS Testing Operations Provisioning and Administration System (CSC-ATT ) TOPAS Testing, Operations, Provisioning and Administration System TOPAS-ES Testing, Operations, Provisioning and Administration System- Exper t System TOPMS Telemarketing Operations Performance Management System TOPO Topology TOPP Task-Oriented Plant Practice TOPS Technical and Office Products System TOPS Traffic Operator Position System TOPS MP Traffic Operator Position System Multipurpose TOPS MPX Traffic Operator Position System Multipurpose Extended TOPS MPX-IWS Traffic Operator Position System Multipurpose Extended-Intellige nt Workstation System TOPSMP Traffic Operator Position System Multipurpose TOR Telegraph On Radio TOR Teleprinting Over Radio TOR Terminal-Owning Region ToR Terms of Reference (ETSI) TOR Type of Routing TORC Traffic Overflow Reroute Control TorMAC Toronto Multimedia Application Center TORTOS Terminal Oriented Real Time Operating System TOS Taken Out of Service TOS Tape Operated System TOS Tape Operating System TOS Temporarily Out of Service TOS Testing Operation System TOS Testing Operations Systems TOS Top Of Stack TOS Trunk Out of Service TOS Type of Service TOS Type Of Subaddress TOSC Trunk Operations Support Center TOSD Telephone Operations and Standards Division TOT Time Of Transmission TOT Transfer of Technology TOT Transfer Overhead Time Tp cordless portable part handshake period TP DDOC Section: System Testplan TP ISO country code for East Timor TP Telekomunikacja Polska (PL) TP Tele-Processing TP Terminal Portability TP Terminal Profile TP Terminating Party TP Termination Point TP Test Pattern TP Test Plan TP Test Plan Defined TP Test Point TP Test Position TP Test Purpose(s) TP Testing Point TP Toll Plant TP Toll Point TP Toll Prefix TP Transaction Processing TP Transaction Processing Service TP Transaction Processor TP Transaction Program TP Transport TP Transport Packet TP Transport Plane TP Transport Protocol TP Twisted Pair TP 0 Transport Protocol Class 0 TP 1 Transport Protocol Class 1 TP 2 Transport Protocol Class 2 TP 3 Transport Protocol Class 3 TP 4 Transport Protocol Class 4 TP0 Transport Protocol Class 0 TP1 Transport Protocol Class 1 TP2 Transport Protocol Class 2 TP3 Transport Protocol Class 3 TP4 Transport Protocol Class 4 TPA Telephone Pioneers of America TPA Transfer Prohibited Acknowledgement TPA Trunk-Port Adapter TPAD Terminal Packet Assembler/Disassembler TPAD Transparent Packet Assembly/Disassembly TPAG Terminal Paging TPASE Transaction Processing Application Service Element TPC Telecommunications Product Code TPC Timing Processor Card TPC TOPS Position Controller TPC Transaction Processing Council TPC Transaction Processing Performance Council TPC Translation Point Code TPC Trans-Pacific Cable TPC Twisted-Pair Cable TPCC Third-Party Call Control TPCPI Transaction Portion Component Portion Interface TPD Total Power Dissipation TPD Trailing Packet Discard TPD Transparent Processable Data TPDU Transport Protocol Data Unit TPE Test Program Edit TPE Transmission Path Endpoint TPE Trigger Processing Environment TPF Time Prism Filter TPF Transaction Processing Facility TPF Transmission Priority Field TPF2 Transaction Processing Full Stack 2 TPI Talking Party Identification TPI Test Point Information TPI The Perl Institute TPI Threads Per Inch TPI Tracks Per Inch TPI Transmission Performance Index TPI Transport Provider Interface TPL Terminal Per Line TPL Terminal Processing Level TPL Transaction Packet Length TPM Timing and Processor Module TPM Transaction Processing Monitor TPM Transactions Per Minute TPM Transceiver Processing Module TPM Transit Parameter(s) TPM Twisted Pair Modem TPNS Teleprocessing Network Simulator (IBM) TPON Telephony over Passive Optical Network tPoP Traditional Point of Presence TPOW Timer T-Power TPP Mag Tape Preparation Program TPP Telephony Preprocessor TPPM Transaction Processing Protocol Machine TP-PMD Twisted Pair Physical Medium Dependent TPR Teleprinter TPR Transmission Process Repository TPRN Terminating Private Number TPROG Timer TPROG TPS Terminal Per Station TPS Three Party Service TPS Transaction Processing System tps Transactions Per Second TPS Transfer Position Seizure TPS Transmission Parameter Signaling TPSA Telekomunikacja Polska TPSI Temporary Portable Subscriber Identity TPSP Transaction Processing Service Provider TPSU Transaction Processing Service User TPSUI Transaction Processing Service User Invocation TPT Terminal Processing Task TPT Test Progress Tone TPT Transmission Path Termination TPTD Total data Packet network Transfer Delay TPU Time Processing Unit TPU Time Processor Unit TPU Transceiver Processing Unit TPU Turbo Pascal Unit TPUI Temporary Portable User Identity TPUN Terminating Public Number TQC Total Quality Control TQF Trunk Query Failure Signal TQFP Thin Quad Flat Pack TQM Total Quality Management TQP Timer, Queue PDU TQU Trunk Query Signal TR ISO country code for Republic of Turkey TR Table Row (HTML tag) TR Task Register TR Technical Reference TR Technical Report TR Technical Report (ETR/TC-TR/TCR-TR in ETSI) TR Technical Requirement(s) TR Technische Richtlinien (Technical Guideline) TR telcom report (periodical) TR Temporal Reference TR Terminal Ready TR Terminating Resistor TR Test Cases Ready TR Test Register TR Time Reference TR Token-Ring TR Toll Restriction TR Tone Receiver TR Traffic Route TR Transfer Restriction TR Transit Exchange TR Transmit/Receive Tr Transponder TR Trouble Report TR Trunk Reservation TR Tuning Range T-R Transmitter-to-Receiver optical power TR/TSB Technical Report/Technical Service Bulletin TRA Call Transfer TRA Telecommunications Reform Act TRA Telecommunications Research Associates TRA Token-Ring Adapter TRA Traffic Restart Allowed message TRA Traffic Routing Administration TRA Transfer-Restart-Allowed signal TRAC Technical Recommendations Application Committee (now NTRAC) TRACES Tracking Reporting Accessing Captive Engineering Services TRADACOMS Trading Data Communications TRAF Traffic TRAF Traffic Data TRAGG Transport Reliability Analysis Generic Guidelines TRAN Transient TRANS Transaction TRANSCAN Canary Islands submarine cable TRANSPAC1 Hawaii-Japan-Philippines 1 submarine cable TRANSPAC2 Hawaii-Japan-Philippines 2 submarine cable TRANSPAC3 Hawaii-Japan-Philippines 3 submarine cable TRAP Software Trap Trate Code word transmit rate time (50/100 ms) TRAU Transcoder/Rate Adaptor Unit TRAVER Translations Verification TRAVIS Traffic Retrieval Analysis Validation and Information System TRB Trouble TRBL Trouble TRC Technical Review Committee (MAP/TOP) TRC Terminating Call Trace TRC Terminating Restriction Code TRC Traffic Restriction Categories TRC Transfer Recent Change TRCC T-Carrier Restoration Control Center TRCC Total Received Cell Count TRCC Turkey Remote Cluster Controller TRCL Timed Recall TRD Load Transferred TRD Telepoint Registration Data TRD Terminal Registration Data TRD Timed Release Disconnect TRD Transferred TRD Transit Routing Domain TRDPC Toll Restriction/Diversion Prohibited Codes TRDZMS Toll Restriction/Diversion Zero Minus Screening TREAT Trouble Report Evaluation and Analysis Tool TREM Timed Reminder TRES Table Resource Execution System TRES Transmit/Receive Earth Station TRF Call Transfer TRF Traffic Data Collected TRF Tuned Radio Frequency TRF Tuned RadioFrequency (Receiver) TRFACA Traffic Data- ACA TRFLN Traffic Data- LUTS/NUTS TRG Tip/Ring to Ground TRI telcom report International (periodical) TRI Transit Routing Information TRIAC TRIode Alternating-Current switch TRIB Transfer Rate of Information Bits TRIBUNE Testing, Ratification and Interoperability of the Broadband User/N etwork Interface TRID Transaction ID TRIF Technical Requirements Industry Forum TRIG Trigger TRIGACT Trigger Activation Indicator TRIGCNT Trigger Processing Control TRIGTYP Trigger Type TRIL Token Ring Interoperability Lab TRIMOS CMOS-TRIode Alternating-Current switch TRINIT TR-303 Interoperability National Implementation Team TRIO Telecommunications Research Institute of Ontario TRIP Transcontinental ISDN Project TRIP-92 Transcontinental ISDN Project 1992 TRK Trunk TRK Trunk Maintenance TRL Technical Reference Library TRL Transistor-Resistor Logic TRL Trunk Register Link TRLR Trailer TRM TEAM Resource Management TRM TEAM Resource Manager TRM Terminal Settings file TRM Transcoder Resource Module TRM Transfer Rate Multiplier TRM Transfer Restart Message TRM Transport Protocol for Reliable Multicast TRM Transport Resource Manager TRMB Terminated-Both TRMF Terminated-From TRMP TEAM Resource Management Proxy TRMS Time Division Multiple Access Reference and Monitoring Station TRMS Transactional Record Management System TRMS True Root-Mean Squared TRMT Terminated-To TRMT Transmit TRMT Treatment TRMT Treatment Team trn Threaded Read News TRN TRaNsaction TRN Transaction Reference Number TRN TRaNsparent TRO Terminating Only TRO Total Return on Ownership TROFF Typeset RunOFF TROHP Transmit/Receive Overhead Processor TRON The Realtime Operating System Nucleus TRON The Realtime Operating-system Nucleus (Japanese Operating System) TROS Tape Read Only Storage TRP TEAM Resource Preference TRP Technology Reinvestment Project TRP Terminal Resource Profile TRP Transaction Portion TRP Transport Reference Point TRPB Truncated Reverse Path Broadcast TRPF Transmit/Receive Parity Failure TRPO Terminal Resource Profile Observer TRR Timer Reference Register TRR Timer, Return to Repeat TRR1 Timer Reference Register 1 TRR2 Timer Reference Register 2 TRS Telecommunications Relay Service TRS Telecommunications Relay System TRS Telephone Relay Service TRS Toll Recording System TRS Toll Restricted Service TRS Transceiver Receiver Splitter TRS Translations and Routing Services TRS Transmission Repeater Station TRS-D Toll Recording System-Digital TRSF Terminal Resource Finder TRSP Terminal Root Service Proxy TRT Timing and Reference Transponder TRT Token Rotation Timer TRU TOPS Recording Unit TRU Transceiver Radio Unit TRU Transmit/Receive Unit TRUMP Trunk Maintenance Package TRUST Translations, Routing, and Utility Services Team TRW Traffic Restart Waiting message TRW Transfer Restart Waiting message TRX Transceiver TRX Transmitter Receiver TS Tandem Supplement TS Tandem Switch TS Task Switched TS Technical Specification TS Telecommunication Sector (ITU-TS) TS Telekom Service TS Teleservice TS Terminal Server TS Terminating Service TS Termination System TS Test TS Test In Progress TS Test Strategy TS Test Strategy Defined TS Test Suite TS Testing Started TS Time Slot TS Time Stamp TS Time Switch TS Time-Sharing TS Timeswitch TS Toll Switching TS Traffic Shaping TS Transfer Syntax (OSI-PL) TS Transit Switch TS Transmission Speed TS Transmission Subsystem TS Transport Service TS Transport Station TS Transport Stream TS Two Stage T-S Time-Space TS0 Time Slot 0 TS16 Time Slot 16 TS16 Time slot 16 TS3T Time-Space-Space-Space-Time TSA Link Test Acknowledgement message TSA Target Service Agent TSA Time Slot Allocation TSA Time Slot Assignment TSA Time-Slot Address TSA Transition Service Agent TSA Translations & Switch Administration TSA Translations Switching Administration TSAC Time Slot Assigner Circuit TSAC Time Slot Assignment Circuit TSACC Telecommunications Standards Advisory Council of Canada TSAG Telecommunication Standardization Advisory Group TSAG Telecommunications Standards Advisory Group TSAM Traffic Sampling TSAP Transport Service Access Point TSAPI Telephony Services Application Programming Interface TSAS Time Slot Assignment Scheme TSAU Time Slot Access Unit TSB Technical Service Bulletin TSB Telecommunications Standardization Bureau TSB Telecommunications Systems Bulletin TSB Twin Sideband TSC Technical Service Center TSC Technical Standards Committee TSC Technical Subcommittee TSC Telecommunication Services License TSC Telecommunications Service Customization TSC Temporary Signaling Connection TSC Test System Controller TSC Three-State Control, TSC Training Sequence Code TSC Transit Subnetwork Count TSC Transit Switching Center TSC Transmission Service Capability TSC Trunk System Controller TSC/RTU Test System Controller/Remote Test Unit TSCF Target System Control Facility (NetView) TSCF TSC Fallback TSCP TSC Preferred TSCR Terminating Central Office Screening TSCU TSC Used TSD Test Specification Development TSD Thread-Specific Data TSD Toll Service Desk TSD Total System Down TSD Type Specific Driver TSDI Transceiver Speech & Data Interface TSDI Transceiver Speech and Data Interface TSDU Transport Service Data Unit TSE Technical Support Engineer TSE Tentative Symbol Estimation TSE Tentative Symbol Estimator TSE Terminal Server Edition TSE Thermal Stress Equivalent TSE Time Slot Exchanger TSE Toronto Stock Exchange TSEL Transport Selector TSF Terminal Simulation Facility TSF Through Supergroup Filter TSF Timing Synchronization Function TSFC Signaling Traffic Flow Control TSG Telephone Security Group TSG Test Signal Generator TSG Timeslot Generator TSG Timing Signal Generator TSG Timing Source Generator TSG Traffic Service Group TSGF Through SuperGroup Filter TSGR Terminal Group and Station Restriction TSGR Transport Systems Generic Requirements TSH ToolBuilder Library and Shell TSI Terminal State Indicator TSI Time Slot Interchange TSI Transmission Subsystem Interface TSI Transmitting Subscriber Identification TSI Transport Service Interpreter (DDN) TSIC Time Slot Interchange Circuit TSISS Time-Slot Interchange Service Supervisor TSIU Time Slot Interchange Unit TSL Target System Libraries TSL Total Service Life TSL Transaction Sublayer TSL Type-Safe Linkage TSLRIC Total Service Long Run Incremental Cost TSM Tabulation Stop Mode TSM Telephony Signalling Module TSM Terminal State Map TSM Terminating State Machine TSM Timer, Standby Monitor TSM TNM Surveillance Module TSM Transaction State Machine TSM Transport Services Management TSMAP Timeslot Map TSMP True Symmetric MultiProcessing TSMP Truly Symmetrical Multi Processor (Wyse Technology) TSMS Traffic Separations Measurement System TSN Test Session Number TSN TOPS Services Node TSNS Telecom Service Network Support (IBM-mng) TSO Telecommunications Service Order TSO Telephone Service Observations TSO Terminating Screening Office TSO Time Sharing Option (IBM) TSO Total Store Ordering TSO NFAS Time slot O without Frame Alignment Signal TSOP Thin Small Outline Package TSP Tandem Switching Provider TSP Telephony Services Provider TSP Terminal Service Profile TSP Ticketing Scan Point TSP Traffic Service Position TSP Translation Signalling Point TSP Traveling Salesman Problem TSPDNCT Terminal Service Profile/Directory Number/Call Type TSPI TAPI Service Provider Interface TSPI Telephony Service Provider Programming Interface TSPID Terminal Service Profile ID TSPP Twin-Switch Power Pack TSPS Traffic Service Position System TSR Tag Switch Router TSR Tag Switching Router TSR Terminate and Stay Resident TSR The Smalltalk Report (periodical) TSR Theoretical Simple Recompile TSR Transport Service Request (DDN) TSRC Signaling Routing Control TSRM Telecommunications Standards Reference Manual TSRM Telecommunications Standards Reference Model (CEC DG XIII) TSRMF Test Storage, Retrieval and Management Facilities TSS Task State Segment TSS Team Security System TSS Technical Services Symposium TSS Technical Standards Sector TSS Technology Service Solutions TSS Telecommunication Standardization Sector (ITU) TSS Test Suite Structure TSS Text Search System TSS Thin Space Specification TSS Time Space Switch TSS Time-Shared System TSS Time-Sharing System TSS Toll Signal-Supervisory TSS Toll Switching System TSS Trunk Servicing System TSS&TP Test Suite Structure & Test Purposes TSS&TP Test Suite Structure and Test Purposes TSS-C Transmission Surveillance System-Cable TSSI Time Slot Sequence Integrity TSSL Tyco Submarine Systems, Ltd. TSSST Time-Space-Space-Space-Time TST Link Test message TST Test TST Time Slot Transfer TST Time-Space-Time T-S-T Time-Space-Time TSTA Transmission Signaling and Test Access TSTD Traffic Standard TSTF Test Failure TSTN Triple Supertwisted Nematic TSTP Timestamp TSTP Transaction Switching and Transport Protocol TSTRES Test Restrictions TSTRESAM Test Restrictions for Analog Member of EKTS TSTS Transaction Switching and Transport Service TSTSIG Test Signal TSU Telephone Signal Unit TSU Test Signal Unit TSU Traffic Switching Unit TSV Test Standby VFL TSW Terminal State Word TSW Time Switch TSY Technology Systems TSYNC T-Interface Synchronization TT Fixed-Width Teletypewriter Font (HTML tag) TT ISO country code for Republic of Trinidad and Tobago TT Talking Trunk TT Tamper-Proof Torx TT Teletypewriter Terminal TT Temporarily Transferred TT Terminal Timing TT Terminating Time TT Test Tone TT Test Trunk TT Text Telephone TT Text Transfer TT Tie Trunk TT Toll Tandem TT Touch-Tone TT Traffic Tester TT Translation Type TT Trouble Ticket TT TrueType TT Trunk Type TT Truth Table TT&C Telemetry, Tracking & Command TT/N Test Tone to Noise Ratio TT0 Transparent Translation Register 0 TT1 Transparent Translation Register 1 TTA Telecommunication Technology Association TTA Traffic Trunk Administration TTA Transport-Triggered Architecture TTB Temporary Trunk Blocking TTB Toll Testboard TTB Trunk Test Buffer TTC TDMA Traffic Channel TTC Telecommunication Technology Committee (JAP) TTC Telecommunications Technical Council TTC Telecommunications Techniques Corporation TTC Telemetry, Tracking and Command TTC Teletypewriter Center TTC Terminal Test and Configuration TTC Terminating Tandem Center TTC Terminating Toll Center TTC Touch Tone Calling TTC Trunk Test Center TTC&M Telemetry, Telecommand, Control & Monitoring TTC2M TTC 2 Mbps TTCAM Touch Tone Calling for Analog Member of EKTS TTCN Tree and Tabular Combined Notation TTCN.GR TTCN Graphical Form TTCN.MP TTCN Machine-Processable Form TTCN-GR TTCN Graphical Form TTCN-MP Tree and Tabular Combined Notation Machine Processable TTCN-MP TTCN Machine-Processable Form TTCP Transmitting Typewriter with tape Punch TTD Target Transit Delay TTD Temporary Text Delay (BSC) TTD Toll Test Desk TTE Terminal Transmission Equipment TTE Transmission Test Equipment TTE Triple Transit Echo (Surface Acoustic Wave Filters) TTF Test Tool Framework TTF Transmission Test Facility TTF Transmission Test Function TTF TrueType Font TTFN Ta-Ta for now TTG Telephony Traffic Generator TTG Two Separate Trunk Groups TTI Text-To-Image TTIB Transparent Tone In-Band TTIET Timer for DP and DTMF Tie Trunk Facilities TTL Time-to-Live TTL Transistor-Transistor Logic TTLP Transmit Transmission Level Point TTM Transceiver Timing Module TTM Transfer Termination Mode TTN Target Transport Network TTN Tie Trunk Network TTO Telecommunications-related TurnOver (annual) TTO Traffic Trunk Order TTP Trail Termination Point TTP Trunk Test Panel TTP Trunk Test Position TTP Trusted Third Party TTPB Trunk Test Panel Buffer TTR Time To Repair TTR Transparent Translation Register TTRT Target Token Rotation Time TTS TeleType Setter TTS Teletypesetter TTS Tele-Type-Setting TTS Text-To-Speech TTS Toll Transit Switch TTS Traditional Telephone Service TTS Transaction Tracking System TTS Trouble Ticket Subsystem TTS Trunk Transit Subnetwork TTT Transmission Test Trunk TTTN Tandem Tie Trunk Network TTTR Tandem Tie Trunk Route TTU Telephone Terminal Unit TTU Transmission Test Unit TTU Trunk Test Unit TTV Text-To-Video TTX Teletex TTX TeleX TTXAU TeleX Access Unit (MHS/X.400) TTXT Transparent TeXT TTY Teletype TTY Teletypewriter TTY Text Telephone TTYL Talk To You Later TTYL Type To You Later TTYS Teletypesetters TU Tape Unit TU Technische Unterlage (Technical Document) (Technical Paper) TU Terminal Unit TU Timing Unit TU Tone Utility TU Traffic Unit TU Transmission Unit TU Tributary Unit TU Trunk Unit TU Typical Urban TU-11 Tributary Unit-Level 11 TU-12 Tributary Unit-Level 12 TU-2 Tributary Unit-Level 2 TU-3 Tributary Unit-Level 3 TUA Telecommunications Users Association (UK) TUBA TCP and UDP with Bigger Addresses TUC Total User Cell Count TUCD Total User Cell Difference TUD Transparent User Data TUG Telecommunication User Group TUG Tributary Unit Group TUG-2 Tributary Unit Group 2 TUG-3 Tributary Unit Group 3 TUGI Tertiary User Group Identity TULIP TCP and UDP over Lightweight IP TUMS Temporary Usage Measured Service TU-n Tributary Unit-Level n TUNIC TCP and UDP over a Nonexistent IP connection TUP Telephone User Part TUP Telephone User Part (of signalling system No7) TUP+ Enhanced Telephone User Part TUP+ Telephone User Part "Plus" TUP+ Telephone User Part + TUPC Tuple Changed TUPE Enhanced Telephone User Part TUPI Terminating User Participant Information TUPL Tuple TUR Traffic Usage Recorder TUR Trunk Utilization Report TUSP Terminating User Service Participant TUV Technischer Uberwachungs-Verein TUWE Transmit Upper Window Edge TV ISO country code for Tuvalu TV TaskView TV Television TV Test Voltage TV Transfer Vector TV Type and Value TVA Teilnehmer Vermittlengs-Anlage (PABX) TVA Terminal Variable Area TVAR Time Variance TVDS Trunk Verification from Designated Station TVEC Terminating Vector Coordinates TVF TV Food Network TVG TV Guide TVI TeleVision Interference TVM Time-Varying Media TVO Total Value of Ownership TVOD TV On Demand TVRO Television Receive-Only TVSC TeleVision Service Centre TVT Translation Verification Test TVTEL Thomas Valley TelCo TVX Timer, Valid Transmission TVX Valid Transmission Timer TW ISO country code for Taiwan TW Technology Watch TW Timer TW Transit Working TW TypeWriter TWA True Windows Application TWA Two-Way Alternate TWAIN Technology Without an Interesting Name TWC The Weather Channel TWC Three-Way Call TWC Three-Way Calling TWC Three-Way Conference TWC Three-Way Connection TWC Time Warner Cable TWCC Two-Way Customer Communication TWCUS Three-Way Calling, Usage-Sensitive TWDD Two-Way/Delay Dial TWG Technical Working Group TWID Two-Way/Immediate Dial twip Twentieth of a Point twm Tab Window Manager TWS Trunk Work Station TWS Two-Way Simultaneous TWT Traffic Work Table TWT Travelling Wave Tube TWTA Traveling Wave Tube Amplifier TWWS Two-Way/Wink Start TWX TeletypeWriter Exchange (Service) TX Tandem Switch Complex TX Transit Exchange Tx Transmission TX Transmit TX Transmitter TX U.S. postal code for Texas TxBD Transmit Buffer Descriptor TXC Transmission Control TX-CEL Throughput X-Cellerator TXD Telephone Exchange, Digital TXD Transmit Data TXE Telephone Exchange, Electronic TXJ The X Journal (periodical) TXK Telephone Exchange, Crossbar TxM Transmit Machine TXP Transport Node TXPR transponder TXPWR Transmit Power TXS Telephone Exchange, Strowger TXS Text-to-Speech Announcement TxSB Transmitted Signaling Bit Pattern TXT Text TXT Text File TXT TOPS Extended Testbed TYP Type TZ ISO country code for United Republic of Tanzania TZ Time Zone TZ Transmitter Zone TZB Technik Zentrale Betriebsfuhrung (Technical Center Management) back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T - U - V|W|X|Y|Z

U Unnumbered U User U Usage U Underlined (HTML tag) U Unavailability U User Option U-ISLC U-Interface ISDN Line Card U-N User-to-Network U-NII Unlicensed National Information Infrastructure U-PCS Unlicensed Personal Communications Services U-plane User plane U-U User-to-User U/L Universally Administered/Locally Administered U/S User/Supervisor UA Unnumbered Acknowledgement UA User Agent UA Universal Access UA Unit Alpha Tested UA Unavailability UA ISO country code for Ukraine UA Unbalanced ARM UA Unassigned UAC User Activation/Deactivation Capability UAC User Application Control UAE UNIX Applications Environment UAE Unrecoverable Application Error UAE User Agent Entity UAG Circuit Group Unblocking Acknowledgement message UAL User Application Layer UAL UMTS Adaptation Layer UAM Universal Access Multiplexer UAM Universal Access Module UAN Universal Access Number UAN UMTS Access Network UAOS Users Association for Open Systems UAPR User Area Pointer Register UART Universal Asynchronous Receiver/Transmitter UAS Unavailable Second UAS Unavailable Seconds UAS Unassigned UAS Universal Access Server UAS Universal Access Shelf UAT Unavailable Time UATEI User-Assigned TEI UAUT User Authentication UAWG Universal ADSL Working Group UBA Unblocking Acknowledgement message UBA Unblocking-Acknowledgement signal UBC User Bearer Channel UBCF User Bearer Control Function UBE Unsolicited Bulk E-mail UBG Circuit Group Unblocking message UBL Unblocking message UBL Unblocking signal UBM Unsuccessful Backward Setup Message UBM Unsuccessful Backward Setup Information Message UBM Unsuccessful Backward Monitoring UBR Unspecified Bit Rate UBR+ Unspecified Bit Rate Plus UBS Unsuccessful-Backward-Set-Up-Information Message UC Use Case UC Utility Circuit UC Upward Compatible UC Usage Count UC User Class uC Microcontroller UCA MDII: Unauthorized CAMA UCB University of California at Berkeley UCB Unit Control Block UCC Universal Conference Circuit UCC Unix Command Converter UCCF User Call Control Function UCD Uniform Call Distribution UCD Universal Call Distribution UCD Uniform Call Distributor UCDLG UCD Login UCDNSA UCD Night Service Activation UCDNSD UCD Night Service Deactivation UCDSD Uniform Call Distribution Signal Distributor UCE Unsolicited Commercial E-mail UCF User Control Function UCF Unregistration Confirm UCF Unregister Confirm UCF Unregister Confirmation UCFW Usage Sensitive Call Forwarding UCG User-side Command Generator UCIC Unequipped Circuit Identification Code message UCL Upper Confidence Limit UCLA University of California at Los Angeles UCM Universal Cable Module UCM User Configuration Manager UCMTA Unix Cocos Message Transfer Agent UCNCND Use of Charge Number for Calling Number Delivery UCNCNDP Use of Charge Number for Calling Number Delivery, for PRI UCP Universal Carrier Protocol UCS User Coordinate System UCS Universal Carrier Services UCS Universal Card Service UCS Answered Calls and Unanswered Calls which use a supplementary service or signaling capability UCS Universal Character Set UCS Universal Multiple-Octet Coded Character Set UCSD University of California at San Diego UCT Usage and Conversation Time UD Uniform Distribution Hunt UD Unix Domain UD Unitdata UD-PCS Universal Digital PCS UDC Universal Digital Channel UDCI User Defined Customer Interface UDF User Defined Function UDF User-Defined Field UDF Universal Disk Format UDI Unrestricted Digital Information UDI-TA Unrestricted Digital Information with Tones and Announcements UDITA Unrestricted Digital Information with Tones and Announcements UDLC Universal Digital Loop Carrier UDLC Universal Data Link Control UDLC Univac Data Link Control UDLT Universal Digital Loop Transceiver UDM User-Defined Message UDMC Unified DRU Milestone Criteria UDP User Datagram Protocol UDP User Data Protocol UDP Uniform Dialing Plan UDP User-Defined Primitive UDP/IP User Datagram Protocol/Internet Protocol UDPC Universal Digital Personal Communications UDR Universal Data Representation UDR User-Defined Routing UDS Universal Data Systems UDS Upper Data Strobe UDS Unix-Domain Sockets UDT Unitdata message UDT Unstructured Data Transfer UDT Uniform Data Transfer UDT User Defined Type UDT with TA Unrestricted Digital Information with Tones and Announcements UDTS Unitdata Service message UDTS Universal Data Transfer Service UDUB User Determined User Busy UE User Element UE Universal Edge UE9000 Universal Edge 9000 UEP Unequal Error Protection UEQ Unequipped uF Microfarad UFA User Facility Agent UFBPSM Unprotected Fixed Block Pool Store Manager UFC User Flow Control UFD User File Directory UFDL User File Description Library UFI Upstream Failure Indication UFM Unified Functional Methodology UFM Unified Functional Model UFS UNIX File System UFS Unified File System UFS Unit Fiber Structure UFT Universal Fiber Terminal UFT Unsolicited File Transfer UG User Guide UG User Group UG ISO country code for Republic of Uganda UG Underground UG Uniguage UG Use BBG Value UG Users Group UGS Undergraduate Student UHF UHL User Header Label UI Unnumbered Information UI Unit Interval UI User Interface UI Unit Inventory UI Unit Interval UI UNIX International UI Universal Interface UI Unrecognized Information Ui U-law Inverted UIC User Interface Circuit UIC Union Internationale des Chemins de fer UIC U Interface Circuit UICL User Interface Class Library UID User Identification UID User ID UID User Identifier UID User Interactive Circuit-Mode Data UID User Interface Definition UID User Interface Database UIF User Interface Framework UIH Unnumbered Information with Header Check UIL User Interface Language UIM User Identity Module UIMF User Identification Management Function UIMF User Information Management Function UIMM Unsigned Immediate Value UIMS User Interface Management System UIN User Information message UIP University Interaction Program UIP User Interface Platform UIPE Universal ISDN Protocol Engine UIS User-In-Service UIS Unclamped Inductive Switching UIS Universal Information Services UISA User Instruction Set Architecture UISF User Interface Support Function UIUC University of Illinois at Urbana-Champaign UJ/UC Universal Jointing and Coupling UK United Kingdom uk Internet country code for Great Britain (United Kingdom) UKB Universal Keyboard UKOPS UK Operator Services UKPO United Kingdom Post Office UL Underwriters Laboratories UL Unordered List (HTML tag) UL Upper Limit UL Upper Layer ULA Uncommitted Logic Array ULA Upper Layer Architecture ULBB User Layer Building Block ULC Urban Loop Concentrator ULCT Upper Layer Conformance Testing Group ULEC User List Editing Capability ULP Upper-Layer Protocol ULP Upper Layer Protocols ULP Upper Level Protocol ULSI Ultra Large-Scale Integration ULSR Unidirectional Line-Switched Ring UM ISO country code for United States Minor Outlying Islands UM Unreliable Multicast Um GSM Air Interface um Micrometer UMA Unified Messaging Architecture UMA Uniform Memory Access UMA Unified Memory Architecture UMA Upper Memory Area UMA User Message Analyzer UMA Universal Management Agent UMB Upper Memory Block UMC Unassigned Mux Channel UMCD Under Minimum Chargeable Duration UMD Unreliable Multicast Datagram UMD Unscrambled Mode Delimiter UMD Usage Metering Data UMD University of Maryland UME UNI Management Entity UME Upstream Mapping Element UMG Unknown Message UML Unified Modeling Language UMM Unidirectional Multipoint-to-Multipoint UMOB Unregistered Mobile UMOT Unreliable Multicast Over Trees UMP Universal Message Protocol UMS UMTS Mobility Server UMS Unified Messaging Service UMT Universal Mobile Telecommunications UMTS Universal Mobile Telecommunication System UMTS Universal Mobile Telecommunications Service UMXU User Message Transfer Unit UN Uniform Numbering UN Unnumbered Code UN Unbalanced NRM UNA Universal Night Answering UNA Upstream Neighbor's Address UNAM Universal Network-to-Server Access Method UNAMCHAR Use Name Characters in IAM UNATEI User- or Network-Assigned TEI uNAV Micro NAV UNB Counter of Unreasonable BSN UNBAL Unbalanced UNC Universal Naming Convention UNC Universal Naming Conventions UNC University of North Carolina UNCOL Universal Common Language UNCOND Unconditional UNDN Unassigned Directory Number Treatment UNEQ Unequipped UNF Counter of Unreasonable FIB UNFR Unframed UNI Unidirectional UNI User-Network Interface UNI User-to-Network Interface UNI Ente Nazionale Italiano di Unificazione UNICODE Universal Trunk Out of Service Code UNISON Unidirectional Synchronous Optical Network UNISON-1 Unidirectional Synchronous Optical Network UNJK Unjacked UNMA Unified Network Management Architecture UNN Unallocated-Number signal UNN Unallocated Number message UNN Unallocated National Number UNO Universal Networked Objects UNRES Unrestricted UOA U-Interface-Only Activation uoa U-Interface-Only Activation UOG User-Out-of-Service Grant UOR User-Out-of-Service Request UOS User-Out-of-Service UOS Universal Operations Systems UOS Universal Operator System UP User Part UP Unified Processor UP User Profile UP User-Provided UP User Provided UP User Process UP Upbanding Module UP Unnumbered Poll UP Update Processing UP Update Processor uP Microprocessor UPA User Part Available message UPA UltraSPARC Port Architecture UPAR User Provided Audible Ring UPAR Early Cut-Through for User Provided Audible Ring UPB Upper Bound UPC Usage Parameter Control UPC Universal Product Code UPC User Privilege Code uPC Microprogram Counter UPCS Universal Personal Communications System UPCS Unlicensed PCS UPFS User-Provided Failed Screening UPG Upgrade Team UPI User Participant Information UPID Universal Path ID UPL User Program Layer UPM Unknown Parameter UPM Units Per Minute UPM Unidirectional Point-to-Multipoint UPN User Premises Network UPN United Paramount Network UPNS User-Provided Not Screened UPP Universal Procedure Pointer UPP Unidirectional Point-to-Point UPPS User-Provided Passed Screening UPR User Performance Requirement UPS Uninterruptible Power Supply UPS Uninterruptible Power System UPS Upper Performance Score UPSR Unidirectional Path-Switched Ring UPT Universal Personal Telecommunication UPT Universal Personal Telecommunications UPT Universal Personal Telephone UPT User Part Test message UPTDB UPT Number Database UPTI UPT Indicator UPTN Universal Personal Telecommunication Number UPU User Part Unavailable message UPU Universal Postal Union UR User Rate UR Unit Robustness Tested UR Unix Review (periodical) UR Unreliable Available URA Uniform Resource Agent URAN UMTS Radio Access Network URC Uniform Resource Citation URDO Unregistered Dial Out Service URDOAD Unregistered Dial Out Access Default Type UREG User Registration UREM Universal Remote URG Urgent Pointer flag URGC Uniform Reliable Group Communication URI Universal Resource Identifier URJ Unregistration Reject URJ Unregister Reject URL Uniform Resource Locator URL Universal Resource Locator URM Universal Restoration Manual URM Usage Reference Model URM Universal Resource Management URM User's Reference Manual URN Universal Resource Number URN Uniform Resource Number URN Uniform Resource Name URO Unified Repertoire and Ordering URP User Root Pointer Register URQ Unregistration Request URQ Unregister Request URSI Union Radioscientifique Internationale uRTS ObjecTime Micro Run Time System URTU Urban Remote Test Unit US User Signaling US Utility Service US Usage Sensitive US Unit Separator US ISO country code for United States of America US Use Per-Switch Value US Upstream us Microsecond US ITAC U.S. International Telecommunications Advisory Committee USA User Service Agent USA User Signaling Agent USAID Universal Speech Activated Intelligent Dialing USART Universal Synchronous/Asynchronous Receiver/Transmitter USASCII United States American Standard Code for Information Interchange USB Upper Sideband USB Usage Sensitive Billing USB Universal Serial Bus USB1 Unscrambled Binary 1s USBS User Signaling Bearer Service USC User Signaling Channel USC Universal Service Circuit USC User Signalling Context USC User Security Component USC University of Southern California USCF Usage-Sensitive Call Forwarding USCM Universal Service Component Model USD Utility Service Directory USD User's Supplementary Documents USD U.S. Dollars USDC U.S. Digital Carrier System USDC U.S. Digital Cellular usec Microsecond Users Network USF Uplink Status Flag USF Universal Service Fund USG Unix Support Group USGS U.S. Geological Survey USHR Unidirectional Self-Healing Ring USHR/L Unidirectional Line Switching Self-Healing Ring USHR/P Unidirectional Path Switching Self-Healing Ring USI User System Interface USI User Service Information USI User Service Interaction USIC U.S. Integrity Center USID User Sevice Identification USID User Service Identifier USIP User Service Information Prime USIS User-to-User Information message USITA United States Independent Telephone Association USIW U.S. Intelco Wireless USL User System Language USL Unix System Laboratories USL Unix Sustems Laboratories USL Universal Software Load USM User-based Security Model USN Unique Sequence Number USNO United States Naval Observatory USO Universal Service Order USO Uniform Service Order USOC Universal Service Order Code USOC Uniform Service Order Code USOL Unsolicited USP Usage Sensitive Pricing USP User Service Profile USP User Service Protocol USP User Stack Pointer USP User Service Participant USPRO U.S. Product Data Association USPS US Postal Service USR User-to-User Information Message USR U.S. Robotics USRT Universal Synchronous Receiver/Transmitter USS Unnotiger Schleifenschluss (Unnecessary Loop Closure) USSD Unstructured Supplementary Service Data USSG United States Study Group USTA United States Telephone Association USTS United States Telephone System USTSA United States Telephone Suppliers Association USTWC Usage-Sensitive Three-Way Calling USW US West UT Universal Trunk UT U.S. postal code for Utah UT Universal Time UT Upper Tester UT Unit Test Plan UT Unit Tested UT Unit Test UT Unit Testing UT Unit Testing Completed UTA Universal Terminal Adapter UTAM Unlicensed Ad Hoc Committee for 2GHz Microwave Transition and Management UTC Unable-to-Comply UTC Coordinated Universal Time UTC Universal Coordinated Time UTC Universal Time Coordinated UTC Universal Thin Client UTCF Upper-Tester Control Function UTD Universal Tone Decoder UTD Uniform Theory of Diffraction UTD University of Texas at Dallas UTF Universal Text Format UTF UCS Transformation Format UTF-8 UCS Transformation Format- 8-Bit Form UTG Universal Tone Generator UTI International Universal Time UTL User Trailer Label UTL Universal Transport Layer UTL Utility UTL1 User Trailer Label 1 UTLB Unified Translation Lookaside Buffer UTOPIA Universal Test and Operations Physical Interface for ATM UTP Unshielded Twisted Pair UTP Universal Trunk Processor UTP Universal Trunk Protocol UTP Unit Test Plan UTR Universal Tone Receiver UTRA UMTS Terrestrial Radio Access UTS Unix Time Sharing UTS Utility Telemetry Service UTS Universal Test Set UTSI User To Service Information UTSL Use The Source, Luke UTU User-to-User UTUD User-to-User Data message UU User-User UU User to User UUCP Unix-to-Unix Copy Program UUCP Unix-to-Unix Copy Protocol UUI User-to-User Information UUI User-to-User Indicator UUi User to User Indicator UUID Universally Unique Identifier UUID Universal Unique Identifier UUIE User-User Information Element UUS User-to-User Signaling UUS User to User Service UUSBL1 User-to-User Signaling Billing Records (Intranetwork) UUSBL2 User-to-User Signaling Billing Records (Internetwork) UUSCC User-to-User Signaling with Call Control UUSI User-to-User Signaling Implicit UUT Unit Under Test UUT User-to-User Signaling Transfer UV Ultraviolet UV Utterance Verification UV Undervoltage UVG Universal Voice Grade UVM Universal Voice Messaging UW UnixWorld (periodical) uW Microwave uW Microwatt UWM Universal Window Manager uwm Universal Window Manager UXGA Ultra XGA UXLA Universal Translations UXS MDII: Unexpected Stop UY ISO country code for Eastern Republic of Uruguay UZ ISO country code for Uzbekistan back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U - V - W|X|Y|Z

V Overflow V Signal V Valid V Value only V Variable V Variable length V Vector V verhogen (Dutch for "to increment") V Version V vertical V Virtual Terminal Service V Voice V Volt(s) V Voltage V Vote (ETSI) V&H Vertical and Horizontal V&V Validation and Verification V(A) Acknowledge state Variable V(M) Recovery State Variable V(r) Local State Variable (receive) V(R) Receive State Variable V(s) Local State Variable (send) V(S) send state Variable V(SD) SenD state Variable V.FC V.Fast Class v.i.s. Viewable Image Size V/C View/Controller V+D Voice + Data (TETRA) V+D Voice Plus Data V4FSL System V Release 4 File System Layout V86 Virtual-86 VA ISO country code for Vatican City State VA U.S. postal code for Virginia Va Varargs VA Vertical Application VA Virtual Address VA Visual Architect VA VisualAge VA Viterbi Algorithm VA Voice Activity VA volt ampere VA Voltage Amplifier VA Volt-Amperes VAAA Voice Activated Auto Attendant VAB Voice Answer-Back VAC Vacant VAC Value Added Carrier VAC VFG Access Control VAC VMEbus Address Controller VAC Volts AC VAC Volts Alternating Current VACM View-based Access Control Model VACT Vacant Code Treatment VAD Value-Added Dealer VAD Value-Added Developer VAD Voice Activated Dialing VAD Voice Activity Detection VAD Voice Activity Detector VADS Value Added Data Service (FTAM) VADSL Very High Speed ADSL VAFC VESA Advanced Feature Connector VAI Video Assisted Instruction VAIO Video Audio Integrated Operation VAIVR Voice-Activated Interactive Voice Response VAJ Visual Age for Java VAL Valhalla VAL Validation VAL Value VAM Virtual Address Method VAMP DMS-250 AIN Message Processing VAN Value-Added Network VAN VDT Access Network VANC Voice Activated Network Control VANS Value Added Network Service(s) VANSGL Value Added Network Services General Licence VAP VADSL Access Point VAP Vaule-Added Process VAP Videotext Access Point VAPD Voice Activated Premier Dialing VAPN Virtual Access to Private Networks VAR Value-Added Reseller VAR Variable VAR Variable Name (HTML tag) VAR Visual Aural Range VAS Value Added Service VAS Video Application Signaling VASP Value-Added Service Provider VASP Virtual Analog Switching Points VASSCS Video-Audio Service Specific Convergence Sublayer VAT Value Added Tax VATP Vector Adaptive Transform Processing VAU Video Access Unit VAVE Value-Added-Value Engineering VAX Virtual Address Extension VAX Virtual Address eXtension (Digital Equipment Corp. Computer Family ) VB Variable Binding VB Variable-Blocked VB Visual Basic VB Voice Bank VB4 Visual Basic 4.0 VB5 Visual Basic 5.0 VB6 Visual Basic 6.0 VBA Visual Basic for Applications VBC Virtual Bearer Channel VBC Virtual Business Card VBD Voiceband Data VBE Voice Band Enhancement VBE/AI VESA BIOS Extension/Audio Interface VBI Vertical Blanking Interval VBI Vertical-Blanking Interval VBL Vertical Block Line VBN VDT Backbone Network vBNS Very High Speed Backbone Network System vBNS Very-High-Speed Backbone Network Service VBPSM Variable Block Pool Store Manager VBR Variable Bit Rate VBR Vector Base Register VBR+ Enhanced Variable Bit Rate VBRI VCO Basic Rate Interface VBR-NRT Non-Real-Time Variable Bit Rate VBR-RT Real-Time Variable Bit Rate VBS Variable Bitrate Services VBS Variable-Blocked-Spanned VBS Voice Broadcast Service VBS Volume Boot Sector VBUS Virtual Bus V-Bus Vertical Bus VBX Visual Basic Custom Control VBX Visual Basic Extension VC ISO country code for Saint Vincent and the Grenadines VC Vacant Code VC Version Control VC Virtual Call VC Virtual Channel VC Virtual Circuit VC Virtual Container VC Virtul Connection VC Visual C++ VC Voice Channel VC Voltage Common VC/CM Version Control/Configuration Management VC++ Visual C++ VC-11 Virtual Container-Level 11 VC-12 Virtual Container-Level 12 VC-2 Virtual Container-Level 2 VC-3 Virtual Container-Level 3 VC-4 Virtual Container-Level 4 VC40 Visual C++ Version 4.0 VCA MDII: Vacant Code Announcement VCA Vacant Code Announcement VCA ViewCall America VCA Voice Communications Adapter VCA Voice Connecting Arrangement VCA Voltage Controlled Amplifier VCC Common Collector (Supply) Voltage VCC Video Compact Cassette VCC Video Composing Chain VCC Virtual Card Calling VCC Virtual Channel Connection Vcc Virtual Channel Connection Component VCC Virtual Channel Controller VCC Voice Controlled Carrier VCCE Virtual Channel Connection Endpoint VCCO Voltage-Controlled Crystal Oscillator VCCT Virtual Channel Connection Termination VCD Variable Center Device Vcd Virtual Channel Descriptor VCD Virtual Communication Device VCDR Variable Call Detail Recording VCDX Very Compact Digital Exchange VCF Video Command "Freeze Picture Request" VCF Virtual Channel Forwarder VCF Voltage Controlled Filter VCG Vector CardioGraphy VCG Vertical line through Centre of Gravity VCG Video Clock Generator VCH Virtual Circuit Handler VCH Voice Channel VCI Virtual Call Identifier VCI Virtual Channel Identifier (B-ISDN) VCI Virtual Circuit Identifier VCI Virtual Connection Identifier VCL Vertical Cavity Laser VCL Virtual Channel Link VCL Visual Component Library VCM Video Composing Module VCM Virtual Channel Maintenance VCM Virtual Channel Manager VCM Voltage-Controlled Multivibrator VCN Virtual Circuit Number VCN Virtual Corporate Network VC-n Virtual Container-Level n VCNA Virtual Customer Network Access VCO Video Conferencing Operations VCO Virtual Captive Office VCO Virtual DMS Captive Office VCO Voltage-Controlled Oscillator VCOS Visible Caching Operating System VCOTBM Virtual Captive Office Test Bed Manager VCP Video Cassette Player VCP Video Controller and Processor VCP Voice-Channel Protocol VCPI Virtual Control Program Interface VCPL Voice Call Processing Language VCR Video Cassette Recorder VCR Voltage Controlled Resistor (FET) VCR Voluntary Content Rating vcrm Voice Channel Resource Manager VCS Version Control System VCS Virtual Call Service VCS Virtual Cell Spreadsheet VCS Virtual Circuit Switch (Datakit) VCS Virtual Circuit System VCSEL Vertical Cavity Surface Emitting Laser VCT Vacant Code Treatment VCTV Viewer-Controlled Cable Television VCU Video Command "Fast Update Request" VCX Virtual Channel Cross-Connect VC-x Virtual Container-x VCXO Voltage Controlled Crystal Oscillator VD Virtual Destination VDAS Voice Data Acquisition System VDB Visitor Database VDBT Visual Database Tools VDC Virtual Device Coordinates VDC Volts DC VDC Volts Direct Current VDD Positive Supply Voltage VDD Version Description Document VDD Virtual Device Driver VDD Virtual Display Driver VDE Verband Deutsche Elektrotechniker VDE Verein Deutscher Elektroingenieure VDE Verein Deutscher Elektrotechniker VDE Voice Data Entry VDI Video Data Input/Interface VDI Video Device Interface VDI Virtual Device Interface (TOP, today CGI) VDK Virus Developer's Kit VDLC Virtual Data Link Capability VDM Virtual Device Machine VDM Virtual Device Memory VDM Virtual DOS Machine VDMA Variable Destination Multiple Access VDN Variable Directory Number VDN Vector Directory Number VDN Virtual Data Network VDN Voice on Data Network VDP Video Display Processor VDP Voice/Data Protection VDPAC Voice Data Protection Active/Inactive Status VDPAM Voice Data Protection for Analog Member of EKTS VDPFCC Voice Data Protection- Full- Customer Controlled VDPFF Voice Data Protection- Full- Fixed VDPLCC Voice Data Protection- Limited- Customer Controlled VDPLF Voice Data Protection- Limited- Fixed VDR Vertical Developer Relations VDR video disk recorder VDR Voice Digitization Rate VDR Voltage-Dependent Resistor VDS Variable Drop-Size VDS Video Distribution System VDS Virtual DMA Services VDS Vocabulary Development System VDS Voice-prompt Development System VDSL Very Asymmetric Digital Subscriber Loop VDSL Very High-Speed Digital Subscriber Loop VDSL Very-High-Bit-Rate Digital Subscriber Line VDT Video Dial Tone VDT Video Dialtone VDT Video Display Terminal VDT visual display terminal VDU Video Display Unit VDU visual display unit VDV Vorbestellte Dauerwahlverbindung (Semi-Permanent Connection) VDX Videotex VE ISO country code for Republic of Venezuela VE Validating Entity VE Vermittlungseinheit (Switching Equipment) (Exchange/Switch) VE Version Editor VE:A International Gateway VE:F Transit Switch VE:N Vermittlungseinheit fur Netzubergange (National Gateway) VE:S Vermittlungseinheit fur S-130 Verkehr (Service Switch) VEA Virtual Environment Architecture VEBEL Verkehrsbelastung DV-System zur Bereitstellung von Verkehrs-belast ungswerten (OAM application for traffic monitoring) VEBS VCO EBS VELC Voice Excited Linear Coding VELCOR VELocity CORrection VEM Vertical Editing Mode VEMM Virtual Extended Memory Manager VEMMI Videotex Enhanced Man-Machine Interface VEN Virtual Equipment Number VENAD Vendor New Application Development VENUS Very Extensive Non-Unicast Service VER Verified VER Verify(ing) Veronica Very Easy Rodent-Oriented Netwide Index to Computerized Archives VESA Video Electronics Standards Association VESPPOR Vendor Software Product Ports or Reimplementations VEST Voice English-Spanish Translator Vf feeding Voltage VF Vacuum Fluorescent VF Variable Format VF Variance Factor VF Virtual File VF Virtual Function VF Voice Frequency VFA Volunteer Fire Alarm VFAT Virtual File Allocation Table (Windows 95 File System) VFC Vertical Form Control (Printers) VFC Video Feature Connector VFC Voice-Frequency Channel VFC Voltage to Frequency Converter VFC Voltage-to-Frequency Converter VFCT Voice Frequency Carrier Telegraph VFD Vacuum Flourescent Display VFFT Voice Frequency Facility Terminal VFG Virtual Facility Group VFGLA Virtual Facility Group Look Ahead VFIP Voice File Interchange Protocol VFL Voice Frequency Line VFL Voice Frequency Link VFN Vendor Feature Node VFO Variable Frequency Oscillator VFR Voice Frequency Repeater VFRAD Voice Frame Relay Access Device VFS Virtual File Store (FTAM) VFS Virtual File System VFS Voice-prompt File System VFSM Virtual Finite-State Machine VFT Very Fast Track VFT Voice Frequency Telegraphy VFT Voice Frequency Terminal VFTG Voice Frequency Telegraph VFW Video for Windows VG ISO country code for British Virgin Islands VG Voice Grade VG Volume Group VGA Variable-Gain Amplifier VGA video graphics adapter VGA Video Graphics Array VGB Virtual Group Busy VGC Voice Grade Circuit VGCS Voice Group Call Service VGDA Volume Group Descriptor Area VGE Voluntary Group of Experts VGF Voice Grade Facility VGI Voice Group Interface VGRA Volume Group Reserved Area VGSA Voice Grade Special Access VGSA Volume Group Status Area VH Vertical High VH Videotex Host V-H Vertical-Horizontal VH-1 Video Hits 1 VHADSL Very High-Bit-Rate Asymmetrical Digital Subscriber Line VHD Very High Definition VHD Very High Density VHD Very High Density (Video Disk Format, JVC Inc.) VHDL VHSIC Hardware Description Language VHDSL Very High-Frequency Digital Subscriber Loop VHE Virtual Home Environment VHF (30...300 MHz) VHLL Very High Level Language VHPIC Very High Performance Integrated Circuit VHS Video Home System VHSI Very High Scale Integration VHSIC Very High Speed Integrated Circuits VHSIC Very High-Speed Integrated Circuit VHS-S Super VHS VI ISO country code for U.S. Virgin Islands VI Virtual Image VI Virtual Interface VI Visual Interactive VI Voice and Voiceband Data Information VI Voice and Voiceband Information VI Voice Interface VI Voiceband Information VIA Vendors' ISDN Association VIA Versatile Interface Adapter VIA Videotex Interworking Architecture VIA Virtual Interface Architecture VIA Virtual Interworking Agent VIAS Voice Intelligibility Analysis Set VIC VMEbus Interface Controller Vice Vast Integrated Computing Environment VICS Voluntary Interindustry Communication Standards (EDI) VID Video Identifier VID Virtual Identifier VID Virtual TID VIDF Vertical side of Intermediate Distribution Frame VIDLC Bellcore Integrated Digital Loop Carrier protocol VIEW Virtual Interface Environment Workstation VIF Variable Information Field VIFF Visualization/Image File Format VIG Virtual Interface Group VIM Vendor-Independent Messaging VIMT Virtual Intermachine Trunk VINCE Vendor Independent Network Control Entity VINES Virtual Networking System VIO Virtual Input/Output VIP Very Important Person VIP Video Information Provider VIP VINES Internet Protocol VIP Virtual Internet Protocol VIP Voice Interactive Phone VIPC VINES Interprocess Communications Protocol VIP-NI Video Information Provider Network Interface VIQR Vietnamese-Quoted Readable Specification VIR Vertical Interval Reference VIR Virtual Input Register VIR Vulcanised India Rubber (insulation) VIRPS Visual Information Response and Communication Processing System VIRS Vertical Interval Reference Signal (Video) VIRUS Vital Information Resources Under Siege VIS Vector Instruction Set VIS Via International Switch vis Viewable Image Size VIS Voice Information System ViSCA Video System Control Architecture VISCII Vietnamese Standard Code for Information Interchange VISIT Visual Interactive Technology VISS Voice Interface Service Supervisor VIT Virtual ISDN Terminal VIT Voice Input Technology VITA Virtual Integrated Transport and Access VITA VMEbus International Trade Association VITC Vertical Interval Time Code VITC Vertical Interval Time Code (Video Tape Recorder) VITS Vertical Interval Test Signal (Video) VIU Vehicle Interface Unit VIU Video Information User VIU Videotex Interface Unit VIU Visitor Database Interface Unit VIU Voice Interface Unit VIU-NI Video Information User Network Interface VIW Video Information Warehouse VJ Van Jacobsen IP Header Compression VJ Visual Java VJ++ Visual Java++ VK Virtual Key VL Verbindungsleitung (Trunk) Vl Vermittlungsleitung (Trunk) VL VESA Local Bus VLAN Virtual Local Area Network VLB VESA Local Bus VLBI Very Long Baseline Interferometry VL-Bus VESA Local Bus VLC Variable Length Code VLC Variable Length Coder VLC Variable Length Coding VLC Voice Line Card VLCM Virtual Line Concentrating Module VLD Variable Length Decoder VLDB Very Large Database VLDS Very Large Data Storage VLE Variable-Length Encoder VLEN Virtual LEN VLF Vertical Laminar Flow VLF Very Low Frequency VLF Very Low Frequency (3...30 kHz) VLF View Layout File VLFA Very Low Frequency Array (50kiloHertz..30MegaHertz, lunar project) VLI Variable-Length Integer VLIW Very Long Instruction Word VLM Very Large Memory VLM Virtual Line Module VLM Virtual Loadable Module VLN Virtual Line VLP Video Laser Player VLP Virtual Connection Loss Priority VLR Visitor Location Register VLR Visitor Location Register (GSM term) VLR Visting Location Registry VLSI Very Large-Scale Integration VLSIC Very Large Scale Integrated Circuit VLSM Variable-Length Subnet Mask VM Verkehrsmanagement (Traffic Management) VM Virtual Machine VM Virtual Memory VM Virtual-8086 Mode VM Voice Mail VM Voltage Multiplier vm Voltmeter VMA Valid Memory Address VMA Verkehrsmanagement Ausland (Deutsche Telekcom traffic management c enter for international traffic) VMA Video Administration module VMA VME AIX VMAAP Visual Maintenance and Admonistration Panel (ATT) VMAC Voice Mobile Attenuation Code VMAE Voice Mail Association of Europe VMAP Virtual MAP VMB Voice Mail Box VMC Variable Message Cycle VMC Vendor Marketing Center VMC VESA Media Channel VMC Voice Messaging Coder VMD Virtual Manufacturing Device (MMS) VMDF Vertical side of Main Distribution Frame VMDF Virtual Main Distribution Frame VME Versa Modul on Eurocard VME Versa Module Eurocard VMEA Voice Mail Easy Access VMESS Verkehrsmessungen (operations system for traffic measurement) VMI Vector Management Interface VMI Verkehrsmanagement Inland (Deutsche Telekom traffic management cen ter for national traffic) VMI Virtual Memory Interface VMIC VME Microsystems International Corporation VMLA Virtual Mobile Location Area VMM Virtual Machine Management VMM Virtual Machine Manager VMM Virtual Memory Management VMM Virtual Memory Manager VMM Visual Meeting Minutes VMM Voice Mail Machine VMNSS Voice Messaging Network Support Service VMOS Vertical Metal Oxide Semiconductor V-MOS V-groove Metal Oxide Semiconductor VMR ETS-4 codeswitch controller (Swedish) VMR Value-Managed Relationship VMR Virtual Meeting Room VMS Vantage Modular Set VMS Versa Modul Serial bus (similar VME-Bus) VMS Virtual Meeting Service VMS Virtual Memory System VMS Virtual Memory System (Operating System for DEC VAX Computer) VMS Voice Mailbox Service VMS Voice Messaging Service VMS Voice Messaging System VMSC Visited MSC V-MSC Visited MSC VMSR Voice Message Storage and Retrieval VMSRID Valid MSRIDs VMT Virtual Method Table VMTM Virtual Maintenance Trunk Module VMTP VDT Message Transfer Part VMTP Versatile Message Transaction Protocol VMTP-T VDT Message Transfer Part-Translator VMU Volume Maintenance Utility VMUIF Voice Messaging User Interface Forum VMW Vertically Modulated Well VMWI Visual Message Waiting Indicator VMX Voice Message Exchange VMZ Verkehrsmanagement Zentrum (OAM application for traffic management via Q3) VN ISO country code for Socialist Republic of Viet Nam VN Verify Number VN Version Number VN Virtual Network VNCA Virtual telecom access method Node Control Application (NetView) VNCA VTAM Node Control Application VNEP Virtual Network Element Protocol VNET Virtual Network VNIC Voltage Negative Impedance Converter VNK Vermittelnder Netzknoten (Network Switching Element (Node)/Loca Ex change) VNL Via Net Loss VNLF Via Net Loss Factor VNN Vacant National Number VNODE Virtual Node VNPT Vietnam Post and Telecommunications VNR Van Nostrand Reinhold VNR Virtual Network Router VNS Virtual Network Service VNS Virtual Network Switching VNS Virtual Networking System VO Validation Office VO Verification Office VO Video Object VO Visual Objects VOA Variable Optical Attenuator VoA Voice over ATM VOB Versioned Object Base VOB Virtual Output Buffer VOC Video Operations Center VOC Volatile Organic Compound vocoder Voice Operated Coder VOCSU Voice Operated Control Switching Unit VoD Video on Demand VOD video-on-demand VODAS Voice Operated Device Anti-Singing VOFR Voice over Frame Relay VOGAD Voice Operated Gain Adjusting Device VOGAD Voice-Operated Gain Adjustment Device VOI Voice Over Internet VoIP Voice over IP (Internet Protocol) VOL Volume VOL Volume Label VOL1 Volume Label 1 VOLCAS Voice Operated Loss Control And Echo/Singing Suppression VOM Voice Only Messaging VOM Volt Ohm Meter VOM Volt/Ohm Meter VON Voice On the Net V-ONU Video ONU VOP Vote and Opinion Poll VOP/VOT Vote and Opinion Poll/Televoting Services VOR Verification Office Report VOR Very-high-frequency Omnidirectional Range (Avionics) VOS Virtual Operating System VOSS Virtual Object Storage System VOT Televoting VOT Televoting Services VOT Visio OLE Testbed VOW Verbindung Ohne Wahl (Direct Connection Without Dialing) VOW Voice Order Wire VOX Voice Operated switch VOX Voice Operated Transmission VP Vice-President VP Virtual Partitioning VP Virtual Party VP Virtual Path VP Visual Programmer VP Voltage Plus VP/VC Virtual Path/Virtual Circuit VPA Valid Peripheral Address VPA Vertical Position Absolute VPA Virtual Point of Attachment (TETRA) VPA Voice Path Assurance VPBX Virtual PBX VPC Very Personal Computer VPC Virtual Path Connection Vpc Virtual Path Connection Component VPC Virtual Position Controller VPC Virtual Process Communications VPCC Virtual Path Cross-Connect VPCE Videotex Presentation Control Element VPCE Virtual Path Connection Endpoint VPCI Virtual Path Connection Identifier VPCT Virtual Path Connection Termination Vpd Virtual Path Descriptor VPD Virtual Printer Driver VPD Vital Product Data VPDB VP Trunk Group Database VPDE Videotex Presentation Data Element VPDN Virtual Private Data Network VPDN Virtual Private Dial-Up Networking VPF Virtual Path Forwarder VPF Virtual Private Facility VPG Virtual Path Group VPI Virtual Path Connection VPI Virtual Path Identifier VPI Voice-Processing Integration VPIM Voice Profile for Internet Mail VPL Virtual Path Link VPL Virtual Private Line VPLMN Visited PLMN VPLMN Visited Public Land Mobile Network VPLT Virtual Path Link Termination VPM Virtual Path Multiplexer VPM Virtual Peripheral Module V-PM Virtual Peripheral Module VPN View Plane Normal VPN Virtual Page Number VPN Virtual Private Network VPNA Virtual Private Networking over ATM vPoP Virtual Point of Presence VPOTS VCO POTS VPP Voice Processing Platform VPP Volts Peak-to-Peak VPR Vertical Position Relative VPROC Verify Procedure VPS Video Programming System VPS Virtual Path Service VPS Voice Processing System VPSL Virtual Party Service Link VPT Virtual Path Terminating Equipment VPT Virtual Path Terminator VPT Voice Plus Telegraph VPTR Virtual Function Pointer VPU Video Presentation Unit VPU Voice Processing Unit VPW Voice Prompt Workstation VPX Virtual Path Cross-Connect System VQ Vector Quantisation coding VQ vector quantization VQ Voice Quote VQB Visual Query Builder VQL Variable Quantizing Level VQL Visual Query Language VQS Visual Query System VR Variable Rate VR Version Registry VR Virtual Reality VR Virtual Route VR Voltage Regulator VR Voltage Restricted VRAM Variable-Rate Adaptive Multiplexing VRAM Video RAM VRAM Video Random Access Memory VRB Visual Report Builder VRC Vertical Redundancy Check VRC Video Random-access-memory Controller VRC Virtual Redundancy Check VRC VR Control VRCP Voice Recognition Call Processing VRE Voltage Restricted Extended VRI Varistor VRLA Valve Regulated Lead Acid VRM Voltage Regulator Module VRML Virtual Reality Markup Language VRML Virtual Reality Modeling Language VRN Virtual Route Number VROOMM Virtual Run-time Object-Oriented Memory Manager VRP View Reference Point VRPRS Virtual Route Pacing ReSponse (SNA) VRS Video Response System (Japan NTT) VRS Voice Response System VRT Voltage Reduction Technology VRTIF Virtual RTIF VRTX Versatile Real-Time Executive VRTX/OS Virtual Real-Time eXecutive Operating System VRTXsa Versatile Real-Time Executive/Scalable Architecture VRU Voice Response Unit VS Vendor-Specific VS Verification Sequence VS Video Server VS Videotex Service VS Virtual Scheduling VS Virtual Source VS Virtual Storage VS Virtual System VS Visual Smalltalk VS Voltage Shield VS Volume Server VS/VD Virtual Source/Virtual Destination VS1 Virtual System 1 VS2 Virtual System 2 VSA Video Serving Area VSA Virtual Scheduling Algorithm VSA Virtual System Architecture VSAM Virtual Sequential Access Methode VSAM Virtual Storage Access Method VSAT Very Small Aperture Terminal VSB Variable Split Band VSB VERSAbus VSB vestigial sideband VSB Vestigial SideBand amplitude modulation (VSB/AM) VSB VME Subsystem Bus VSC Vendor Service Center VSC Vertical Service Code VSC Videotex Service Center VSCCP VDT Signaling Connection Control Part VSCD Vertical Service Code Digits VSCP VDT Session Control Part VSD Vendor Specific Device VSD Vendor Supplied Driver VSE Virtual System Extension VSE Visual Smalltalk Enterprise VSE Voice Storage Equipment VSELP Vector Sum Excited Linear Prediction VSELP Vector-Sum Excited Linear Predictive Coding VSF Voice Storage and Forwarding VSF Voice Store and Forward VSI VMEbus Slave Interface VSIA Virtual Socket Interface Alliance VSID Virtual Segment ID VSIF Video Services Industry Forum VSIM VSOS Simulator VSLE Very Small Local Exchange VSLE Visual Screening List Editing VSM Variable Block Pool Store Manager VSM Verein Schweizerischer Maschinen-industrieller normalisation (CH) VSM Virtual Storage Management VSM Visual System Manager VSMF Visual Search on MicroFilm VSMO Very Stable Master Oscillator VSN Voice Service Node VSN Voice Services Node VSN Volume Serial Number VSNL Videsh Sanchar Nigam Ltd. VSO Very Small Outline (IC Package) VSO VITA Standards Organization VSOS Virtual Switch Operating System VSP Vector Signal Processor (Zoran Inc.) VSP Video Signal Processor VSP Virtual Switching Point VSP Voice Services Processor VSP Voice Session Processor VSPM Virtual Spectrum Peripheral Module VSPRM Voice Services Processor Resource Module VSR Very Small Remote VSR Video Shift Register VSR Voice Store Retrieve (Codec/ Telecom.) VSS Vector Switch Software VSS Voice Storage System VSt Vermittlungsstelle (Switch/Exchange) VST Visual Smalltalk VST Volume Sensitive Tariff VStKNr Vermittlungsstellen-Kennummer (Switch ID) VSU Video Service Unit VSU Videotex Service Unit VSWR Voltage Standing Wave Ratio VSYNC Vertical Sync VT U.S. postal code for Vermont VT Vacuum Tube VT Vertical Tab VT Vertical Tabulation VT Vertical Tabulator VT Vertical Temporal High VT Video Telephone VT Video Telephony VT video-tape VT Videotex Terminal VT Virtual Target VT Virtual Terminal VT Virtual Terminal Service VT Virtual Tributary VT Virtual Trunk VT Visual Thought VT SPE Virtual Tributary Synchronous Payload Envelope VTA Virtual Terminal Agent (Networks) VTA Virtual Trunk Agency VTA Virtual Trunk Agent VTAF VoiceType Application Factory VTAM Virtual TAM VTAM Virtual Telecommunications Access Method (SNA) VTAM Virtual Terminal Access Method VTAME VTAM Extended VTB Visual Table Builder VTBL Virtual Function Table VTBM VCO Test Bed Manager VTBM Virtual Tributary Bandwidth Manager VTC Vehicular Technology Conference VTC Vienna Technology Center VTC Virtual Terminal Control VTD Virtual Timer Driver VTD Volume Tracking Driver VTDS Voice Transparent Data Service VTE Video Transfer Engine VTE Virtual Terminal Environment VTE Virtual Test Environment VTG Virtual Tributary Group VTHC Virtual Testheads Complex VTI Virtual Topology Identifier VTID Virtual TID VTIF VCO Terminal Interface VTL Variable-Threshold Logic VTM Virtual Topology Management VTMP Virtual Topology Management Protocol VTN Vietnam Telecom National VTNA Virtual Transit Networking over ATM VTO voltage-tuned oscillator VTOA Voice and Telephony Over ATM VToA Voice Trunking over ATM VTOC Volume Table of Contents VTOH Virtual Tributary Overhead VTOL Vertical Take Off and Landing VTP Virtual Terminal Protocol VTPM Virtual Terminal Protocol Machine VTR Video Tape Recorder VTRP Virtual Trees Routing Protocol VTS Vertical Tabulation Set VTS Vessel Traffic Systems VTS Virtual Telephony Server VTS Virtual Terminal Service VTSP Virtual Terminal Switch Profile VTVM Vacuum Tube Voltmeter VTX VideoTeX Vtx Videotext VTX host The components dedicated to Videotex service VTx-Nc concatenated Virtual Tributary VU ISO country code for Vanuatu Vu Voice unit VU Volume Unit VUE Visual User Environment VUI Video User Interface VUP View Up Vector VUP Virtual User Port VUS Voice-Unvoiced-Silence VUSP Virtual User Service Participant VVL Vendor Validation Lab VVM Voice, Video and Multimedia VW VisualWorks VWB Visual WorkBench VWF Verkehrs Warn-Funk (Road Traffic Information System, ARI) VWP Virtual Wavelength Path VWP Voluntary Work Programme (ETSI) VWS View Store VXA VSOS Extended Architecture VxD Virtual Device Driver VxFS Veritas File System VXI Versa modul on eurocard eXtension for Interfacing VXI VME Extension for Instrumentation VXIbus VMEbus Extensions for Instrumentation VXPM Virtual XPM back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V - W - X|Y|Z

W Watt W Watt(s) w Wechselseitig (Two-Way) W West W Window W Word w WORD (unsigned word) or UINT (unsigned int) W Write W- Wideband W/S Workstation W3 World-Wide Web (WWW) W3C W3 Consortium W3C Consortium W3O W3 Organization W95 Microsoft Windows 95 WA U.S. postal code for Washington WA Work Area WABI Windows Application Binary Interface WABT WAit Before Transmission WAC Wide Area Centrex WAC Wireless Access Controller WACA Write Access Connection Acceptor (VT) WACI Write Access Connection Initiator (VT) WACK WAit before ACKnowledgement WACS Wide Area Communications System WACS Wireless Access Communications System WADM Wavelength Add/Drop Multiplexer WADM Wavelength Add-Drop Multiplexer WADS Wide Area Data Service WAFL Write-Anywhere File Layout WAH Work At Home WAHT Weighted Average Holding Time WAI Who Am I WAIS Wide Area Information Server WAIS Wide Area Information Service WAIS Wide Area Information System WAIT Wait state WAITS Wide Area Information Transfer System WAK Wait before AcKnowledgement WAL Write-Ahead Log WAL2 Walsh Function 2 WAM Web Application Manager WAMIS Wireless, Adaptive and Mobile Information Systems WAMP Wavelength Amplifier WAN WANN Wide Area Network Node WAP Wide-Area Paging WAP Wireless Application Protocol WAR Weekly Activity Report WARC World Administration Radio Conference WARC World Administrative Radio Conference WAS Works As Specified WASM Watcom Assembler WATFOR Waterloo FORTRAN WATM Wide-Area ATM WATM Wireless Asynchronous Transfer Mode WATM Wireless ATM WATS Wide Area Telecommunications Service WATS Wide Area Telephone Service WATTC World Administrative Telegraph and Telephone Conference WAV Waveform-Audio File WAV Windows waveform WAVAR Write Access Variable WAVAR Write Access VARiable (VT) WAVE Wide Area Voice Exchange WB Result Write-Back WB Warner Brothers Wb Weber WB Welcome back WB Wideband WB Workbook WB Write Back WBA Wait Before Acknowledgement (BSC) WBA Warning, Bulletin, or Alert WBAC WATS Band Access Code WBAs Warnings, Bulletins, and Alerts WBC Wide Band Channel WBC Wideband Coupler WB-DACS Wideband DACS WBEM Web-Based Enterprise Management WBERT Wideband Bit Error Rate Test WBFM Wideband Frequency Modulation WBS Wideband System WBS Wireless Broadband System WBS Work Breakdown Structure WBT Web-Based Training WBT Windows-Based Terminal WB-TDMA Wideband TDMA WBVTR Wideband Video Tape Recorder WC Wire Center WC Wire Chief WC World Coordinate WC++ Watcom C++ WCA Wireless Cable Association WCB Word Command Buffer WCC WAN Communications Controller WCC Wireline Common Carrier WCDMA Wideband Code Division Multiple Access W-CDMA Wideband CDMA W-CDV Tungsten Chemical Vapor Deposition WCIT World Conference on International Telecommunications WCL Widget Creation Library WCN Watchdog Counter WCN Wireless WCPE Wireless Customer Premises Equipment WCPN Wireless Customer Premises Network WCR Watchdog Circuit Reset WCR With Carriage Returns WCS Wireless Communications Service WCS World Coordinate System WCS Writable Control Store W-CTI Wireless Computer-Telephony Integration WCTP Wire Chief Test Panel WD Western Digital WD Wiring Diagram WD Working Draft WDC Wireless Development Centre W-DCPA Wireless Distributed Call Processing Architecture WDCS Wideband Digital Cross-Connect System W-DCS Wideband Digital Crossconnect System WDDI Wavelength Distributed Data Interface WDL Windows Driver Library WDM Wave-Division Multiplexing WDM Wavelength Division Multiplex WDM Wavelength Division Multiplexed WDM Wavelength Division Multiplexer WDM Wavelength Division Multiplexing WDM Wavelength-Division Multiplexer WDM Win32 Driver Model WDM Windows Driver Model WDS Wireless Data System WDSS Workstation Dependent Segment Storage WDT Watchdog Timer WDT Weighted Down Time WE Warm Entry WE Warm Exit WE Weather WE WE Write Enable WE/WE Warm Entry/Warm Exit WebGMS Web Gate Management System WebSCF Web Software Change Form WECo Western Electric Company WEI Word Error Indicator WELL Whole Earth 'Lectronic Link WEP Windows Entry Point WEP Windows Exit Procedure WEP Wired Equivalency Privacy WEPL Weighted Echo Path Loss WER Word Error Rate WF ISO country code for Wallis and Futuna Islands WF Wildcard Filter WFA Work and Force Administration WFA Work Force Administration WFA Workforce Administration WFA/DI Work and Force Administration/Dispatch In WFA/DO Work and Force Administration/Dispatch Out WFA-C Work and Force Administration/Control WFB Wireless Fixed Base WFC Windows Foundation Classes WFD Waveform Distortion WFG Waveform Generator WFG Windows For workGroups WfM Wired for Management WFMTUG World Federation of MAP/TOP User Groups WFQ Weighted Fair Queuing WFW Windows for Workgroups WfWG Windows for Work Groups WG Wandel & Goltermann WG WaveGuide (Microwaves) WG Work Group WG Working Group WGA Work Group Administrator WGC Walking Grey Code WGCC Walking Grey Code Counter WGMS Web Gate Management System WGR Waveguide Grating Router WGS Work Group System WGS WorkGroup Solutions Inc. WGSE WG Spectrum Engineering (ERC) WGSM Wireless Global Switching Module WH Walsh-Hadamard WH WattHour WHAG Windows Help Authoring Guide WHAT Windows Help Authoring Tools WHAT Wireless Hybrid Asynchronous Time-Bounded MAC W-HDTV Wide High DefinitionTeleVision WHMS Warehouse Management System WHT Walsh-Hadamard Transform WI U.S. postal code for Wisconsin WI Work Item (ETSI) WIC Whole Internet Catalog WIDL Web Interface Definition Language WILL Wireless In Local Loop WIMG Write-Through, Caching-Inhibited, Memory-Coherency, and Guarded At tributes (Memory Mode Access Bits) WIMP Window-Icon-Mouse-Pointing (Windows, Icons, Mouse and Pulldown Men u) WIMP Windows, Icons, Menus, Pointers WIMP Workgroup Information Management Program Win Microsoft Windows WIN Windows Into Nortel WIN Wireless Intelligent Network WIN Worldwide Intelligent Network Win16 16-Bit Windows API Win32 32-Bit Windows API Win32c Win32 Compatible Win32s Win32 Subset API for 16-Bit Windows Win95 Microsoft Windows 95 WINE Windows Emulator WinG Windows Games Interface WinHEC Windows Hardware Engineering Conference WinNT Microsoft Windows NT WINS Windows Internet Name Service WinSock Windows Sockets WIP Work In Progress WIPO World Intellectual Property Organization (UN) WIRE Workable Interface Requirements Example WIRES Web Based Impact Report Entry System WIS Web Information System WIS Web-based Information System WISDN Wireless Intelligent Services Distributed Network WISE Windows Interface Source Environment WISE Wireless Internet Solution WISE WordPerfect Information Systems Environment wish Windowing Shell WISS Workstation Independent Segment Storage WISURD Worldwide Incremental Software Update Release and Distribution WITS Washington Interagency Telecommunications System WITS Workstation ISDN Terminal Simulator WITT Workstation Interactive Test Tools WIU Wireless Interface Unit WIXC Wavelength Interchanging Crossconnect WIZ Wizard File wk Week WK Wink WKG Working WKS Well-Known Services wksh Windowing Korn Shell WKSH Windowing Korn Shell (USL) WKTS Wireless Key Telephone System WL Wireless WLAN wireless local area network WLC World Line Card WLC-A World Line Card A WLC-B World Line Card B WLDS Wireless-Loop Distribution System WLL Wireless Local Loop WLN Warm Line WM Window Manager WM Window Message WMAC Wireless Media Access Control WMC Watchdog Message Channel WMD Wireless Mobile Data WMF Windows Metafile WMF Windows Metafile Format WMF Wireless Message Format WMI Windows Management Interface WML Warm Line WML Widget Meta Language WMO World Meteorological Organization WMS Writable Microstore WN Wrong Number WNC Wireless Networks Calgary WNIG Wireless Networks and Interconnection Group WO Work Order WO Write-Only WOH Work On Hand WOM Word Organized Memory WOM Write-Only Memory WONA Wireless Open Network Architecture WOOD Write-Once Optical Disk WORM Write-Once-Read-Many (Optical Disk) WoS Web of Science WOSA Windows Open Services Architecture WOTS Wireless Office Telephone System WOW Web-Oracle-Web WOW Windows on Win32 WOW Windows on Windows WOW Wireless On Wireline WOW Woody's Office Watch WP Watchpoint WP Wavelength Path WP Word Processing WP Word Processor WP WordPerfect WP Working Paper WP Working Party WP Working Procedures WP Write Protect WP Write Protected WP/VWP Wavelength Path/Virtual Wavelength Path WPA Wrong Password Attempts WPA Wrong Password Attempts (counter) WPABX Wireless Private Automatic Branch Exchange WPC Wired Program Control WPC Wireless Personal Communications WPC WordPerfect Corporation WPCom Write Precompensation WPD Windows Printer Description WPG WordPerfect Graphics WPG WordPerfect Graphics File WPL Windows Portability Libraries WPM WordPerfect Macro File WPM Words Per Minute WPMS Workstation Performance Monitoring System WPOS Workplace OS WPS Windows Printing System WPS Word Processing System WPS Workplace Shell WPU WordPerfect Units WPVM Windows Parallel Virtual Machine WRAM Windows RAM WRAP Workstation Remote Access Platform WRC World Radio Conference WRC World Radiocommunications Conference WRED Weighted Random Eearly Detection WRI Windows Write File WRK Windows NT Resource Kit WRK Working WRL World Format WRMI We Really Mean It WRQ Write Request WRR Watchdog Reference Register WRS Wavelength-Routing Switch WRS Wind River Systems WRS Working Reference System wrt With Respect To WRTC Working Reference Telephone Circuit WRU Who Are You? WS ISO country code for Independent State of Western Samoa WS Wait State WS Wave Solder WS Window Size WS Window Style WS Wink Start WS Wire Send WS Word Separator WS Work Station WS Workspace WS Workstation WSA Windows Sockets API WSAT Windows Sockets API Tester WSC Wireless Systems Calgary WSCF Web Software Change Form WSD Web Server Director WSF Work Station Function WSG Wired Shelf Group WSH Windows Scripting Host WSI Wafer-Scale Integration WSI Wireless Services Interface WSJ The Wall Street Journal WSL Wipro Systems Limited WSM Wireless Switching Module WSN MDII: No Start Dial- Wink Start, Steady On-Hook WSN Wang Span Network WSP Web Service Provider WSP Wireless Services Provider WSR MDII: No Start Dial- Wink Start, Steady Off-Hook WSR Work Station REGRESS WSR2 Work Station REGRESS II WSS Wavelength Selective Switch WSS Wide Screen Signalling WSS Wideband Switched Service WSS Wireless Subscriber System WSS World Small Switch WSSF Workstation Support Function WSSPR World Small Switch Project WST Wireless Subscriber Terminal WSXC Wavelength Selective Crossconnect WT Wavelet Theory WT Working Team WT World Trade WT Write Through WT Writethrough WTA Wideband Test Access WTAC World Telecommunications Advisory Council WTB Wanted To Buy WTB Wireless Telecommunications Bureau WTC Wakeup Timer Capability WTDC World Telecommunication Development Conference WTDM Wavelength and Time-Division Multiplexing WTF Wanted To Find WTF World Telecommunication Forum WTG Way to go WTK Want To Know WTM Wavelength Terminal Multiplexer WTN Working Telephone Number WTO World Trade Organization WTO Write To Operator WTOR Write To Operator with Reply WTOS Wireless Telecommunications Office Systems WTR Wait-To-Restore WTR Wide Temperature Range WTS Wireless Telephony System WTS Word Terminal Synchronous WTS Workstation Technical Services WTSC World Telecommunication Standardization Conference (former CCITT P lenary Assembly) WU Western Union Telegraph Company WUC Wakeup Call WUCR Wake Up Call Reminder WUCR Wakeup Call Request WUI Web User Interface WUI Western Union International WuOL Wakeup On LAN WUPE Wireless User Premises Equipment WV U.S. postal code for West Virginia WV Work Volume WVAD Wireless Voice-Activated Dialing WVLAN Wireless Virtual Local Area Network WVPN Wireless Virtual Private Network WWB Writer's Workbench WWCJ GTE Automatic Electric World-Wide Communications Journal (periodic al) WWD World-Wide Demonstration WWIS World-Wide Information System WWLA Wideband Wireless Local Access WWP Windward Park WWSA World Wide Systems Architecture WWW World-Wide Web (Internet) WWWW World Wide Web Worm WXC Wavelength Cross-Connect WY U.S. postal code for Wyoming WYSBYGI What You See Before You Get It WYSIWYG What You See Is What You Get (Desk-Top Publishing) WZ World Zone WZ1 World Zone 1 back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W - X - Y|Z

X Execute X Extend X Reactance x short used as x-coordinate X Sticky X transparent (BSC) X X Window System X.25 CCITT Recommendation X.25 (for DTE operating in the packet mode) X.25PLP CCITT Recommendation X.25 [4] Packet Layer Procedures X.25SS X.25 Service Supervisor X10 X Window System Version 10 X11 X Window System Version 11 X11R4 X Window System Version 11 Release 4 X11R5 X Window System Version 11 Release 5 X11R6 X Window System Version 11 Release 6 XA CrossConnect Agent XA Exchange Access XA Extended Architecture XA X Window System Atom XAC XA-Core XA-CORE Extended Architecture Core XAI Extended Architecture Interconnect XAL XPM Application Layer XAME Exchange Access SMDS Mapping Entity XA-OM Exchange Access Operations Management XAPIA X.400 Application Programming Interface Association XARENA X-Windows Ameritec Remote Navigator XA-SMDS Exchange Access SMDS XASYSM XA-Core System Maintenance XATC Extended Address Transfer Code Xaw X Window System Athena Widgets Library XB Crossbar XBAF Originating/Terminating BAF modifier service XBAR Crossbar XBERT XPM Bit Error Rate Testing XBL Extension Bell XBL XPM Base Layer XBM Extended Basic Mode XBM Transfer Bitmap XBM X Bitmap XBT Crossbar Tandem xByQ x Bit in y Quaternary (four-level signal) XC Cross-Connect XC Cross-Connection XC X Window System Cursor XCCS Xerox Character Code Standard XCDE X/Open Common Desktop Environment Xcms X Color Management System XCN Cross-Connect XCOFF Extended Common Object File Format XCP Crossthreaded Call Processing XCS 10 Call Seconds XCS X/Open Calendaring and Scheduling API XCVR Transceiver XD transmitter/Distributor XDAT Transmit Data XDB Extended Data Block xdb HP Symbolic Debugger XDCCC X Device Color Characterization Conventions XDF Xrm Decrease Factor XDM X Display Manager XDM XRAY Debug Monitor XDMCP X Display Manager Control Protocol XDR eXternal Data Representation (NFS) XDS Extended Debug System XDS X/Open Directory Service XDS XAPIA and X/Open Directory System API xDSL x-Digital Subscriber Line x-DSL x-Digital Subscriber Line XER Exception Register XFA Call Transfer Allowed XFC Transfer Charge XFD Call Transfer Denied XFER Transfer XFMR transForMeR XFR Transfer XFS WOSA Extensions for Financial Services XGA Extended Graphics Array XGM Cross-Gain Modulation XGMS X-Windows Gate Management System XI X.25 SNA Interconnect XIC X Input Context XID eXchange IDentification (HDLC, LLC) XID Exchange Identifier XID Transaction ID xid Transmission ID XID X-window Identification XIE X Window System Imaging Extension XIM X Input Method Xinu Xinu Is Not Unix XIP eXecute In Place XIP Execute Instruction Pointer XIP Execute-In-Place XIP Execution In Place XIWT Cross-Industry Working Team (US) XK X Window System Key Symbol XL Extended Line XLA Translation XLA Translation Manager XLA Translation Utility XLA translations XLA Translator XLAB Translations Block XLAR Translations and Routing XLBUS Extended Line Card Bus XLC Translation Collector xLC xDSL Line Card XLCM Extended LCM XLFD X Logical Font Description Xlib X Window System Library XLIU X.25/X.75/X.75' Link Interface Unit XLPE cross-Linked Plastic insulation XLS Excel Spreadsheet File XM Exchange Manager Xm X Window System Motif Library XMAN eXtended MAN XMHS Extended Message Handling System XMHS X/Open Message-Handling Service XMIT transMIT XML Extensible Markup Language XMM Extended Memory Manager XMP X/open Management Protocol XMS Extended Memory Specification XMS Extended Multiprocessor System XMT Transmit XMUX trans-MUltipleXer XNS Xerox (Inc.) Network Systems protocol XNS Xerox Network Systems XNS Xerox Networking Systems XNSCP XNS Control Protocol XO crystal Oscillator XOFF OFF-signal XOM X/Open OSI Abstract Data Manipulation API XOM XAPIA and X/Open Object Management API XOMMO Transactor OMMO XON ON- signal XOR eXclusive OR XOT X.25 Over TCP XOW Express Order Wire XPACS X-Windows Patch Administration Control System XPAM Transmit Pulse Amplitude Modulation XPC X.25 Protocol Controller XPC X.25 Protocol Controller (Digital Data Communications) XPCM Transmit PCM XPCS X Portable Character Set XPD cross-Polar Discrimination XPD cross-Polarization Discrimination XPDR transPonDeR XPE Extended Peripheral Equipment XPG X.400 Promotion Group XPG X/Open Portability Guide XPG3 X/Open Portability Guide, Issue 3 XPG4 X/Open Portability Guide, Issue 4 XPI cross-Polarisation Isolation XPL Carrier Private Line XPM Cross-Phase Modulation XPM Extended Peripheral Module XPM X Pixel Map XPM XMS-Based Peripheral Module XPS X.25/X.75 Process System XPT Crosspoint XPT Crosspoint Tandem XPT eXternal Page Table XR indeX Register XRA Ring Again Allowed XRD Ring Again Denied XREF cross-REFerence XRF Cross-Reference XRF extended recovery facility (SNA) XRF Extended Register File XRII/TV X-Ray Image Intensifier / TeleVision (System, Medical) XRL eXtra Requirement List XRL IXIT Requirements List XRL X-Ray Lithography XRLCM Remote Extended Memory Line Concentrating Module XRS Unknown Message Response XRT WOSA Extensions for Real-Time Data XRU Extension Recording Unit XS Carrier Switched XSG X.25/X.75 Service Group XSH Xshell XSIS Xerox Special Information Systems XSIS Xerox System Integration Standard XSL Extensible Stylesheet Language XSM Extended System Monitor XSMD Extended Storage Module Drive XST MDII: Expected Stop Timeout XSYCO XMS System Coder XT Crosstalk XT Cross-Threaded XT Extended XT eXtended Technology Xt X Window System Toolkit (Intrinsics) Library XTAL (quarz) crysTAL XTAL Crystal XTC Extended Test Controller XTC External Transmit Clock XTC heXadecimal Tone Code XTI X/open Transport Interface (UNIX) XTI X/Open Transport Layer Interface XTL XPM Telecom Layer XTP Exchange Termination Point XTP Xpress Transfer Protocol XTP Xpress Transport Protocol XTPSG Exchange Termination Point Subgroup XTR cross Talk Ratio XTT Cross-Thread Trunk XTYP Exchange Type XUDT Extended Unitdata XUDTS Extended Unitdata Service XUG X Users Group XUST XPM Upgrade Software Tool XVR Exchange Voltage Regulator XWD X Window Dump XWD X-Windows Bitmap XXTRG XX Trigger for AIN back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X - Y - Z

Y Admittance Y luminance Y luminance component y short used as y-coordinate Y Yellow Y Yes Y/C Luminescence and Chrominance Y/N Yes/No Y2K Year 2000 YA Yet Another YABA Yet Another Bloody Acronym YACC Yet Another Compiler Compiler (UNIX) YAG Yttrium-Aluminium-Garnet (Laser) YAPL Yet Another Programming Language yar Yet Another Readme YBCO Yttrium and Barium in Copper Oxide (Superconductive Material) YCMB Yellow, Cyan, Magenta and Black (4-colour printing) YD ISO country code for Democratic Yemen (obsolete) YE ISO country code for Yemen YE Year End YFNSA Your Friendly Neighborhood System Administrator YGWYPF You Get What You Pay For YIG Yttrium-Iron-Garnet (MicroWave Component) YIQ Luminance, Inphase color, Quadrature color YL Loop-Back Abstract Test Method YMMV Your Mileage May Vary YP Yellow Pages YPS Yellow Pages Service YRGB luminance/Red/Green/Blue (Video) YT ISO country code for Mayotte YT Postal code for Yukon Territory YT Transverse Abstract Test Method YTD Yacht Telephone Debit YTD Year To Date YU ISO country code for Montenegro and Serbia (formerly Yugoslavia) YUV Y, Cb, Cr YUV Y-signal, U-signal, and V-signal back to top|0-9|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y - Z -

Z impedance Z Zero Z Zero voltage reference Z Zulu time zone (GMT) Z.E.N. Zero Effort Networking Z/C Zone Controller ZA ISO country code for Republic of South Africa ZAK Zero Administration Kit ZAP "ZAP" field used with INC ZAP to disable handsets ZAPS Zone Activated Paging System ZAS Central Announcement Office ZAW Zero Administration for Windows ZB Impedance Balance ZBI Zero Byte Indicator ZBI Zero Byte Substitution Indication ZBR Zone Bit Recording ZBS Zero Byte Substitution ZBTSI Zero Byte Time Slot Interchange ZBTSI Zero Byte Time Slot Interface/Interchange Zc ZC Zone Center ZC Zone Code ZC Zone Controller ZCAV Zone Constant Angular Velocity Z-CAV Zoned Constant Angular Velocity ZCO Zero-Cross-Over ZCP Zero-Cross Point ZCQ Zero-Cross Qualifier ZCS Zero Code Suppression ZD Ziff-Davis ZD Zoned Decimal ZDB Zortech Debugger ZDBOp Ziff-Davis Benchmark Operation ZDI Ziff-Davis Information Service ZDS Zenith Data Systems ZDW Zero-Dispersion Wavelength ZF Zero Flag ZF zero frequency ZFS Zone Field Selection ZGS Zeichengabesystem (Common Channel Signaling System) ZI Zentrale Instandhaltung (Central Maintenance) ZIF Zero Insertion Force ZIF Zero Insertion Force connector (IC Socket) ZIL Zig-zag In-Line ZIP Zig-Zag In-Line Package ZIP Zone Improvement Plan ZIP Zone Information Protocol ZL Complex Load Impedance ZM ISO country code for Republic of Zambia ZMD Zero Minus Denied ZMD Zero Minus Dialing ZMZPA Zero Minus Zero Plus Allowed ZPV Zoomed Port Video ZR ISO country code for Republic of Zaire ZRM Zonenruckmeldung (Chargeband Message) ZS Zero Substitution ZS Zone Selection ZSL Zero Slot Lan ZT Zone Time ZV Zoomed Video ZVEI Zentralverband Elektrotechnik- und Elektronikindustrie e. V. (Ger man electronics industry association) ZW ISO country code for Zimbabwe ZWR Zwischenregenerator (Regenerator) ZZk Zentraler Zeichengabekanal (Central Signalling Link) ZZK Zentraler Zeichenkanal (Common Signalling Channel)