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
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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 Telecommunications 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 Modem 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 Packet Switching 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 Dial Tone 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 Modulation 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 Television 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 Node 4GL Fourth-Generation Language 4P Four Pole 4P 4-Party Line 4PAM Four-Level Pulse Amplitude Modulation 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 Broadcasting 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 Bandwidth 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