AAA Authentication, Authorization, Accounting

AA-to-A Application to Application. AAA Authentication, Authorization, AccountingAAL ATM Adaptation LayerAAR Automatic Alternative RoutingAARP Apple Talk Address ResolutionAAS Automatic Announcement Subsystem TelecommsAAUI Apple ® Attachment Unit InterfaceABC Automatic Broadcast Controller – HP ABIOS Advanced Basic Input Output SystemABM Asynchronous Balanced ModeABR Automatic Beacon Resolution - Bay Networks ® / Nortel ®ABR Available Bit RateAC Alternating CurrentACD Automatic Call DistributionACDIACE Access Control EntryACELP Agelbraic Code-Excited Linear PredictiveACK AcknowledgeACL Access Control ListACPI Advanced Configuration and Power InterfaceACQ AcquittementACR Allowed Cell Rate – ATMACR Attenuation Crosstalk RatioACS Adjacent Channel Suppression - GSMACSE Association Control Service ElementACSE A/C Set ErrorACT Absolute Congestion ThresholdACTLU Activate Logical UnitACTPU Activate Physical Unit ACU Automatic Calling UnitAD Administrative DomainADCCP Advanced Data Communications Control ProtocolADM Add Drop MultiplexerADMD Administration Management Domain - X.400ADO ActiveX Data ObjectsADPCM Voice Compression Method : Adaptive Differential Pulse Code ModulationADR Advanced Digital RecordingADS Artwork Delivery SystemADSI Active Directory Service InterfaceADSL Asymmetrical Digital Subscriber LineADSU ATM Data Service UnitADWARE Advertising Supported SoftwareAEP Advanced Encryption StandardAES Advanced Encryption StandardAF Alternate Frequencies - RDS AFC Antiferromagnetically-Coupled - IBM ®AFI AppleTalk ™ Filtering Interface.AFI Authority Frame Identifier AGCHAGNS AT&T® Global Network Services AGP Accelerated Graphics PortAH Authentication HeaderAHIP Authentication Header IPAI Artificial IntelligenceAIFF Audio Interchange File FormatAIN Advanced Intelligent Network - TelephonyAIP ATM Interface Processor - Cisco ®AIS Alarm Indication Signal - ATMAIT Advanced Intelligent Tape - Sony® AIX Advanced Interactive eXecutive - IBM ®ALAP AppleTalk ™ Link Access ProtocolALB Advanced Lithium Battery - Toshiba ®ALB Advanced Low Voltage BicMOS Electronic ComponentALC Arithmetic Logic CircuitALGOL ALGOrithmic LanguageALU Arithmetic Logic UnitAM Amplitude ModulationAMD Active Matrix DisplayAMD Advanced Micro Devices ®AME Advanced Metal EvaporatedAMI Alternate Mark Inversion - ATMAMI American Megatrends Inc. ® - Bios ManufacturerAMP Active Monitor Present - Token-RingAMPS Advanced Mobile Phone ServiceAMR Adaptive Multi-Rate – GSMAMRANI Automatic Number IdentificationANR Automatic Network RoutingANSI American National Standard Institute AOCC Advice of Charge Charging - GSMAOCI Advice of Charge Information - GSMAO/DI Always On / Dynamic ISDNAOL America On Line AOT Asynch Passthru Over TCP - Nortel ®APA All Points AddressableAPC American Power Conversion APE All-Paths ExplorerAPI Application Programming InterfaceAPIPA Automatic Private IP Addressing APL A Programming LanguageAPM Advanced Power ManagementAPPC Advanced Program-to-Program Communications – IBM APPI Advanced Peer-to-Peer InternetworkingAPPN Advanced Peer-to-Peer Networking – IBM APS Advanced Photo SystemAPS Advanced Planning and SchedulingAPS Automatic Protection Switching - SonetAR Address Register - CPUARB Adapter Request BlockARB Adaptive Rate Based -congestion controlARCnet Attached Resource Computer NetworkARFCN Absolute Radio Frequency ChannelARIB Association of Radio Industry BusinessesARINC Aeronautical Radio IncorporatedARJ Archive Robert Jung ARL Adjusted Ring LengthsARM Asynchronous Response ModeARP Address Resolution ProtocolARPANET Advanced Research Project Agency NetworkAS Autonomous SystemASBR Autonomous System Boundary / Border RouterASCII American Standard Code for Information InterchangeASE Adaptive Server Enterprise - Sybase ®ASF Advanced Streaming FormatASI Adapter Support InterfaceASIC Application Specific Integrated CircuitsASK Amplitude-Shift KeyingASMP ASymmetric MultiProcessingASN Abstract Syntax Notation - ISO 8824 ASP Active Server Page - Microsoft ® ASP Application Service ProviderASPI Advanced SCSI Programming InterfaceASR Automated System Recovery - Microsoft ®ASVD Analog Simultaneous Voice and DataASYNCHRONEATA Advanced Technology AttachmentATAPI AT Attachment Packet InterfaceATD Asynchronous Time DivisionATDM Asynchronous Time-Division Multiplexing ATDP ATtention Dial ToneATM Asynchronous Transfer ModeATM Adobe  Type ManagerATM Automatic Teller MachineATMDXI ATM Data Exchange Interface ATP AppleTalk ™ Transaction ProtocolAT&T American Telephone and Telegraph Company ®AUC AUthentication Centre - GSMAUI Attachment Unit InterfaceAURP Apple-Talk Update based Routing ProtocolAUX AuxiliaryA/V Audio / VideoAVD Alternating Voice and DataAVI Audio Video Interleaved – Microsoft AVM ATM Voice MultiplexerAVVID Architecture for Voice, Video, and Integrated Data - Cisco ®AWG American Wire GaugeBBACP Bandwidth Allocation Control ProtocolBAIC Barring of All Incoming Calls BALUN Balanced UnbalancedBAN Boundary Access NodeBAOC Barring of All Outgoing CallsBAP Bandwidth Allocation ProtocolBAS Broadband Access ServerBASH Bourne-Again SHell - UnixBASIC Beginners All Purpose Symbolic Instruction CodeBAT Batch fileBBN Bolt Beranek And Newman BBS Bulletin Board SystemBCC Blind Carbon CopyBCC Broadcast Call ControlBCCH Broadcast Control CHannelBCD Binary Coded DecimalBCP Bridging Control ProtocolBCS B channel Circuit SwitchedBCU Bus-Control UnitBCVT Basic Class Virtual Terminal - OSIBDC Backup Domain ControllerBDCS Broadband Digital Cross-Connect System - SONETBEACONINGBECN Backward Explicit Congestion NotificationBER Basic Encoding RuleBERT Bit Error Rate TestBES Best Effort Service - IETFBG Border GatewayBGP Border Gateway ProtocolBI Business IntelligenceBIA Burned-In-AddressBIC-Roam Barring of Incoming Calls BICI Broadband Inter - Carrier InterfaceBIFS Binary Format for Scenes - MPEG-4 languageBIGA Bus Interface Gate Array - Cisco ®BIND Berkeley Internet Name DomainBIOD Block Input / Output DaemonBIOS Basic Input / Output SystemBIP Bit Interleaved Parity - ATMBIR Burst Information RateBIT Binary DigitBIU Bus Interface UnitBLOB Binary Large OBjectBLSR Bidirectional Line Switch Ring - SONETBML Business Management Layer BMP BitMap - File SystemBMT Bean Managed TransactionsBNC Bayonet Neil Concelman ConnectorBNI Broadband Network InterfaceBNM Broadband Network ModuleBNN Boundary Network NodeBOIC Barring of Outgoing International CallsBOOTP Bootstrap ProtocolBOP Bit Oriented ProtocolBPP Bidirectional Parallel PortBOT Binary Synchronous Communication“BOTS” Knowledge RobotsBPDU Bridge Spanning Tree Protocol - Bridge Protocol Data UnitBPML Business Process Modeling LanguageBPP Bidirectional Parallel PortBPR Business Process ReengineeringBPS Bit Per Second BPSK Binary Phase-Shift KeyBPV Bipolar ViolationBRI Basic Rate Interface BSC Binary Synchronous CommunicationBSD Berkeley Software Distribution UnixBSN Backward Sequence NumberBT British TelecomBT Burst Tolerance - ATMBTP Business Transaction ProtocolBTU Basic Transmission Unit - SNA™BVCT Basic Class Virtual Terminal - OSIB2B Business-to-BusinessB2C Business-to-ConsumerB2E Business-to-EmployeeBVCT Basic Class Virtual Terminal - OSIBYTE Binary Term / Binary DigitCCA Certificate AuthorityCAC Connection Admission Control - ATMCAD Computer-Aided DesignCAL Client Access LicenseCAM Channel Access MethodCAM Computer Aided ManufacturingCAM Controlled Attachment ModuleCAMEL Customized Applications for Mobile network Enhanced LogicalCAP Carrier Amplitude Phase modulationCAR Committed Access RateCAPI Cryptographic Application Program InterfaceCARP Cache Array Routing ProtocolCAS Certification Authorities eg. Verisign ® CAS Channel Associated SignalingCASE Computer-Aided Software EngineeringCATV Community Antenna TelevisionCAU Controlled Access UnitCBAC Context Based Access Control - Cisco  CBC Cipher Block ChainingCBDS Connectionless Broadband Data ServiceCBPDU Configuration Bridge Protocol Data Units.CBR Constant Bit RateCBWFQ Class Based Weighted Fair Queuing – Cisco CC Call ControlCC Carbon CopyCC Country Code - GSMCCBS Completion of Calls to Busy SubscriberCCC Clear Coded ChannelCCD Couple Charged DeviceCCE Configuration Control ElementsCCCH Common Control Channel - GSMCci Carbon Copy Invisible CCIE Cisco Certified Internetwork Expert – Cisco CCIS Common Channel Interoffice SignalingCCITT Consultative Committee on International Telegraphy and TelephonesCCNA Cisco Certified Network Associate - Cisco ®CCP Compression Control ProtocolCCS Cascading Style SheetCCS Common Channel Signaling ccTLD Country Code Top Level DomainCCU Channel Codec Unit - GPRSCD Call DeflectionCD Carrier Detect CD Compact DiscCDDA Compact Disc Digital AudioCDDI Copper Distributed Data InterfaceCDF Channel Definition FormatCDFS Compact Disc File SystemCD-I Compact Disc - InteractiveCDMA Cellular Division Multiple AccessCDP Control Distribution PrintCDP Cisco Discovery Protocol - Cisco ®CD-R Compact Disc – RecordableCDRM Cross Domain Resource ManagerCD-ROM Compact Disc-Read-Only MemoryCD-RW Compact Disc - Read WriteVD-V CD VideoCDV Cell Delay VariationCDV Compressed Digital Video / Compact Disc VideoCDVT Cell Delay Variation Tolerance - ATMCDWFQ Called Distributed Weighted Fair Queuing - Cisco ®CD-WO Compact Disc - Write OnceCD-WORM Compact Disc - Write Once Read ManyCD-XA Compact Disc eXtended ArchitectureCEI Connection Endpoint IdentifierCELP Code Excited Linear Prediction CEP Certificate Enrollment Protocol - Cisco ®CEPS Common Electronic Purse Specifications - Visa Europay ®CER Cell Error RatioCERT Computer Emergency Response TeamCES Circuit Emulation Service - ATMCFB Call Forwarding on mobile subscriber Busy - GSMCFML ColdFusion Markup Language CFNRC Call Forwarding on mobile subscriber Not Reachable - GSMCFU Call Forwarding Unconditional - GSMCGA Color Graphics Array – IBM CGI Common Gateway InterfaceCGM Computer Graphics Metafile - File SystemCH C-ShellCHAP Challenge Handshake Authentication ProtocolCGI Common Gateway InterfaceCHV Card Holder VerificationCHS Cylinder Head SectorCICS Customer Information Control SystemCID Certified IdCID Caller IdentificationCID Channel ID - ATMCIDR Classless Inter Domain RoutingCIFS Common Internet File SystemCIM Common Information ModelCIP Channel Interface Processor - Cisco ®CIR Carrier to Interference Radio - GSMCIR Committed Information Rate - commentCIS Contact Image SensorCISC Complex Instruction Set ComputingCISCO San Francisco – 1984CIVR Computer and Interactive Voice ResponseCIX Commercial Internet eXchangeCLEC Competitive Local Exchange CarrierCLI Caller Line IdentificationCLI Command Line InterfaceCLID Calling Line Identification CLIE Communication, Link, Information and Entertainment - Sony ® CLIP Calling Line Identification PresentationCLIR Calling Line Identification RestrictionCLNP Connectionless Network Protocol - OSICLNS Connectionless Network ServiceCLOS Class Of Service. CLP Cell Loss PriorityCLR Certificate Revocation List - Cisco ®CLSI Cisco Link Services Interface - Cisco ®CLTP Connectionless Transport Protocol - OSICMIP Common Management Interface ProtocolCMIS Common Management Information ServicesCMNS Connection-Mode Network ServiceCMOL CMIP Over Link LayerCMOS Complementary Metal Oxide Semiconductor CMOT CMIP Over TCP-IPCMP Container Managed PersistenceCMPT Common Management Information and Services Protocol over TCPCMS Conversational Monitor System – IBM CMT Container Managed TransactionsCMT Common Mode TerminationCMTS Cable Modem Termination SystemCMYK Cyan Magenta Yellow blacKCNA Cisco ® Networking AcademiesCNID Calling Party Name Identification - IP TelephonyCOBOL Common Business Oriented LanguageCODEC Coder Decoder / COmpression / DECompressionCOLP Connected Line Identification Presentation – GSMCOM Component Object ModelCOM Commercial BusinessCOPS Common Open Policy Service CORBA Common Object Request BrokerCOREL COwpland REsearch Labs ®COS Class Of ServiceCOSE Common Opened System EnvironmentCP Control Point – IBM CPCS Common Part Convergence SublayerCPI Character Per InchCPI-C Common Programming Interface for Communication – IBM® SAA™CP/M Control Program for MicrocomputersCPS Characters Per SecondCPU Central Processing UnitCPXe Common Picture eXchange EnvironmentCRC Cyclic Redundancy CheckCRDM Cross Domain Resource ManagerCRL Certificate Revocation ListCR-LDP Constrain-based Routing Label Distribution ProtocolCRM Customer Relationship ManagementCRT Cathode Ray TubeCS Carrier SelectionCS-ACELP Conjugate Structure Algebraic CELP CSI Called Subscriber IdentificationCSM Cabling System ManagerCSO Composite Second Order BeatCSPDN Circuit-Switched Public Data NetworkCS-PDU Convergence Sublayer Packet Data UnitCS-SLIP Compressed Serial Link Internet ProtocolCSMA-CA Carrier Sense Multiple Access with Collision AvoidanceCSMA-CD Carrier Sense Multiple Access with Collision Detection CSMA-CR Carrier Sense Multiple Access with Collision ResolutionCSRP Customer Synchronized Resource Planning CSS Cascading Style SheetCSTA Computer Supported Telecommunications ApplicationsCSU Channel Service UnitCSV Common Service VerbCT Clock TimeCTB Composite Triple BeatCTD Cell Transfer Delay - ATMCTI Computer Telephony Integration CTL Certificate Trust ListCTS Clear To SendCUG Closed User GroupCUT Control Unit Terminal – IBM CVSD Continuously Variable Slope Delta modulationCXML Commerce Extensible Markup LanguageDDA Destination AddressDAC Digital to Analog ConverterDAC Dual-Attached Concentrator - FDDIDACS Digital Access and Crossconnect SystemDAEMON Disk And Execution MONitor - UnixD-AMPS Digital - Advanced Mobile Phone Service/SystemDAP Data Access ProtocolDAP Directory Access Protocol - X.500DARD Dynamic Resource Allocation and DistributionDARPA Defense Advanced Research Projects AgencyDAS Dual Attachment Station - FFDI attachmentDASD Direct Access Storage DeviceDASP Disk Anti Shock Protection System - Acer ®DAT Digital Audio Tape dB Decibel DBCC Database Consistency Checker - Microsoft ®-SQLDBF DBase FileDBML DataBase Markup LanguageDBMS Data Base Management SystemDCA Document Content Architecture - IBM ® / SNA - File SystemDCA Data Communication ArchitectureDCAP Data Link Switching Client Access ProtocolDCC Data Country Code - ATMDCD Data Carrier DetectDCE Data Communication Equipment DCF Data Composition FacilitiesDCOM Distributed Component Object ModelDDD Direct Distance DialingDDE Dynamic Data ExchangeDDI Direct Dial InDDL Data Definition LanguageDDP Datagram Delivery Protocol - AppleTalk ™DDR Dial-on-Demand Routing – ISDNDDR Double Data Rate - RAM - AMD ®DDRSDRAMDDS Dataphone Digital Service - AT&T ®DDS Digital Data Storage - Hewlett-Packard ®DE Discard EligibilityDEC Digital Equipment Corporation - Compaq  since 1999DECT Digital Enhanced Cordless TelecommunicationsDEK Data Encryption KeyDEN Directory Enabled NetworkDEPS Departmental Entry-Processing SystemDES Data Encryption StandardDFB Distributed Feedback Laser Diode DFC Data Flow ControlDFS Distributed Files SystemsDFT Distributed Functional Terminal – IBM DGTP Data Grade Twisted PairDHCF Distribution Host Command FacilityDHCP Dynamic Host Configuration ProtocolDHTML Dynamic Hypertext Markup LanguageDI Decoder IdenticationDIA Document Interchange Architecture - IBM ®DID Direct Inward DialDIME Direct Internet Message EncapsulationDIMM Dual In-line Memory ModuleDIN Deutsche Industrie Norm connectorDIP Dial-Up Internet Protocol - LinuxDIS Digital Immune System - IBM ® / Symantec ®DISC DisconnectDISL Dynamic Inter Switch Link ProtocolDISOSS Distributed Office Support System - IBM ®DIU Data Interface UnitDIW D-Inside WireDKUDLC Data Link Control DLCI Data Link Connection IdentifierDLCMI Data Link Control Management InterfaceDLE Data Link EscapeDLL Dynamic Link LibraryDLSw Data-Link Switching - RFC 1434DLT Digital Linear TapeDLU Dependent Logical Unit - SNA / SSCPDLUR / S Dependent LU Requester / Server. DMA Direct Memory AccessDMD Digital Micro mirror DeviceDMI Digital Multiplexed Interface - AT&T ®DMP Data Movement Processor - Cisco ®DMT Discrete Multi-ToneDMTS Distributed Management Task ForceDMZ Demilitarized ZoneDN Distinguished Name - X.500DNA Digital Network Architecture - DEC ®DNA Distributed interNet Applications Architecture - / ISA Server 2000 - Microsoft ®DNC Direct Numerical ControlDNIC Data Network Identification Code - CCITTDNIS Dial Number Id ServiceDNS Domain Name ServerDOD – ARPA Department of Defense's Advanced Research Project Agency DOD Direct Outward DialDOM Document Object ModelDOR Dial Optimized RoutingDoS Denial of ServicesDOS Disk Operating SystemDPCM Differential Pulse-Code ModulationDPI Dot Per InchDPLL Digital Phase-Locked LoopDPNSS Digital Private Network Signaling SystemDPOF Digital Print Order FormatDPMI DOS Protected Mode InterfaceDPNSS Digital Private Network Signaling SystemDPS D Channel Packet-SwitchedDPSK Differential Phase Shift KeyingDQDB Distributed Queue Dual Bus - IEEE 802.6 - MAN DR Disconnect RequestDRAM Dynamic Random Access MemoryDRDA Distributed Relational Database Architecture - IBM ®DRDRAM Direct Rambus Dynamic Random Access MemoryDRM Digital Rights Management - Reciprocal ®DS Direct Spreads - also called WCDMADSA Digital Signature AlgorithmDSA Directory System Agent - X.500DSAP Destination Service Access Point - IEEE 802DSD Direct Stream Digital - code used by SACDDSE Data Switch EquipmentDSI Digital Speech InterpolationDSIMM Dual Single Inline Memory ModuleDSL Digital Subscriber LineDSL Digital Subscriber Loop - AT&T ®DSLIC Digital Subscriber Line Interface CircuitDSLAM Digital Subscriber Line Access MultipleDSLIC Digital Subscriber Line Interface Circuit ®DSN Data Source NameDSN Delivery Status NotificationDSO Dynamic Shared Object - UnixDSOM Distributed System Object Model - IBM ®DSP Digital Signal ProcessorDSPU Down Stream Physical UnitDSR Data Set ReadyDSRS Data Signal Rate SelectorDSS Digital Signature StandardDSS Directory and Security ServicesDSSS Direct Sequence Spread SequenceDSU Digital Service Unit DSX Digital System Cross-Connect switchDTAP Direct Transfer Application Part – GSMDTD Document Type definitionDTE Data Terminal Equipment DTM Dynamic Synchronous Transfer Mode - Net Insight ®DTMF Dual Tone Multi FrequencyDTR Data Terminal ReadyDTS Digital Theater Surround - 1993DTX Discontinuous Transmission - GSMDUV Directory User Agent - X.500DVB Digital Video BroadcastingDVD Digital Video Disc DVDR Digital Video Disc RecordableDVI Digital Video InterfaceDVM Data/Voice MultiplexerDVMRP Distance Vector Multicast Routing ProtocolDWDM Dense Wavelength Division MultiplexingDXI Data Exchange InterfaceEEAG Extensible Authentication ProtocolEAI Enterprise Applications IntegrationEAN Electronic Article NumberingEAP Extensible Authentication ProtocolEBCDIC Extended Binary Coded Decimal Interchange CodeE-Bi E-Business Intelligence ebXML Electronic Business XMLEC Echo CancelingECF Echo FrameECF Enhanced Connectivity Facilities – IBM ECH Echo Canceling Hybrid ECM Entity Coordination ManagementECMA European Computer Manufacturers AssociationECO Engineering Construction OperationsECP Enhanced Capability PortECSD Enhanced Circuit Switched Data - GSMED End DelimiterEDBFA Erbium Doped Fiber Amplifiers.EDEL End Delimiter FieldEDGE Enhanced Data Rates for Global EvolutionEDI Electronic Data InterchangeEDIFACT Electronic Data Interchange for Administration Commerce and Transport / or TradeEDIMS Electronic Data Interchange Messaging SystemEDO Extended Data OutputEDP Electronic Data ProcessingEDSI Enhanced Devices Small InterfaceEECS End to End Call Manager - Cisco ®EEPROM Electrically Erasable Programmable Read Only MemoryE&M recEive and transMit /or Ear & MouthEFCI Explicit Forward Congestion IndicationEFR Early life Failure RateEFR Enhanced Full RateEFT Electronic Funds TransferEFS Encrypting File SystemEFT Electronic Funds TransferEGA Enhanced Graphics Array – IBM EGP Exterior Gateway ProtocolE-GPRS Enhanced General Packet Radio ServiceE-GSM Extended Global System for MobileEHF Extremely High Frequency EHLLAPI Enhanced High-Level Language Application InterfaceEIA Electronic Industries AssociationEIDE Enhanced Integrated Device ElectronicsEIGRP Enhanced Interior Gateway Routing ProtocolEIP Enterprise Information PortalEIR Equipment Identity Register - GSMEIRP Effective Isotropic Radiated Power – GSMEISA Extended Industry Standard ArchitectureEJB Enterprise Java BeansEKTS Electronic Key Telephone ServiceELAN Education LanguageELAN Emulated LAN - ATMELM Elasticity Buffer and Link ManagementE-MAIL Electronic MailEMD Equilibrium Node DistributionEMI Electromagnetic InterferenceEMM Expanded Memory ManagerEMP Electromagnetic PulseEMS Expanded Memory SpecificationEN End Node - APPN PU2.1 - IBM ®ENIAC Electronic Numerical Integrator And CalculatorENQ EnquiryEOC Embedded Operations ChannelEOF End Of FileEOL End Of LineEOM End Of Message - ATMEON Enhanced Other NetworkEOT End Of Transmission / End Of TextEPD Early Packet Discard - ATMEPIC Explicitly Parallel Instruction Computing – Intel  EPL ElectroPhotographic LaserEPP Enhanced Parallel PortEPROM Erasable Programmable Read-Only MemoryEQTV Extended-Quality TelevisionER Explicit Rate - ATMERD Emergency Repair DiskERM Enterprise Relationship ManagementERMS Enhanced Rotary Mechanical SplicesERP Effective Radiated Power - GSMERP Enterprise Resource PlanningESAF Ethernet Sync Adapter with FilterESC EscapeESCON Enterprise System Connection - IBM ®ESD Electrostatic DischargeESDI Enhanced Small Device InterfaceESDRAM Enhanced SDRAMESF Extended Superframe FormatES-IS End System-to-Intermediate System - OSIESMTP Extended Simple Mail Transfer ProtocolESP Encapsulating Security ProtocolESP Enhanced Serial PortE-TCH Enhanced Traffic Channel - Edge - GSMETDMA Extended Time Division Multiple AccessETL Extract - Transfer - LoadETSI European Telecommunications Standards Institute ETU Execution UnitEXT ExternalFFAI Functional Address IndicatorFALSE MODEM FAN Fabric Area Network - I-Wear ™FAQ Frequently Asked QuestionsFAS Frame Alignment Sequence - TelephonyFAT File Allocation TableFBM Frame-Based ManagementFC Fiber-Optic ConnectorFC Frame ControlFCB File Control BlockFCC Federal Communications CommissionFC-PGA Flip Chip - Pin Grid Array – Intel FCS Frame Check SequenceFD Flat DisplayFDDI Fiber Distributed Data InterfaceFDM Frequency Division MultiplexingFDMA Frequency Division Multiplexing AccessFEC Fast Ethernet Channel - HPFEC Forwarding Equivalence Class - MPLSFEC Forward Error Correction - GSMFECD Forward Explicit Congestion NotificationFECN Forward Explicit Congestion NotificationFEP Front End ProcessorFER Frame Erasure Rate - GSMFERF Far-End Receive FailureFF Form FeedFFT Final Form Text / Fast Fourrier TransformFHSS Frequency Hopping Spread SpectrumFIB Forward Indicator BitFID Format IdentificationFIFO First In First OutFIREWIRE IEEE 1394 FLOPS Floating-point Operations Per SecondFLT Full Line Terminal - SonetFM Frequency ModulationFMP Functional MultiProcessingFOIRL Fiber Optic Inter Repeater LinkFOMAU Fiber Optic Medium Attachment UnitFORTRAN FORmula TRANslationFOTS Fiber-Optic Transmission SystemFMD Function Management DataFPGA Field Programmable Gate ArrayFPIP Fiber Channel over IPFPLMTS Future Public Land Mobile Telecommunications SystemsFPS Fast Packet SwitchingFPU Floating Point UnitFPU Frame Processing UnitFRAD Frame Relay Assembler DissemblerFRAME RELAYFRF.11FRF.12FRMR Frame RejectFRU Field Replaceable UnitFSAA Full-Screen Anti AlisasingFSB Front Side Bus – Intel FSI FDDI System InterfaceFSK Frequency Shift KeyingFSMA Field-Installable Subminiature AssemblyFSP File Service ProtocolFSPF Fiber Shortest Path First - Brocade ®FST/IP Fast-Sequenced TransportFTAM File Transfer Access and Management FTP File Transfer Protocol FTPD File Transfer Protocol DaemonFULL DUPLEXFXO Foreign Exchange OfficeFXS Foreign Exchange StationGG.711G.733 / T1Gb GigabitGB Giga BytesGDI Graphical Device InterfaceGERAN GSM/EDGE Radio Access NetworkGFC Generic Flow ControlGFI General Format IdentifierGGP Gateway-To-Gateway Protocol - ARPA / DodGHz GigahertzGIF Graphics Interchange FormatGKS Graphical Kernel SystemGMII Gigabit Media Independent InterfaceGMT Greenwich Mean TimeGNU GNU's Not Unix.GOV GovernmentGPRS General Packet Radio ServiceGSM Global System for MobileGTLD General Top Level DomainGTP GPRS Tunnel ProtocolGTS Generic Traffic Shaping - Multimedia and QoSGUI Graphical User InterfaceGUID Globally Unique IdentifierH HALF DUPLEXH.323HBA Host Bus AdapterHCL Hardware Compatibility List – Microsoft HD Hard DiskHDB3 High-Density Bipolar codingHDLC High Level Data Link ControlHDML Handheld Device Markup LanguageHDSL High bit rate Data Subscriber LineHDTV High-Definition TelevisionHEC Header Error ControlHERTZ / HZ Heinrich R. HertzHFC Hybrid Fiber-Coaxial CableHFS Hierarchical File SystemHID Human Interface Devices - Microsoft ®HIS Host Integrated Server ™ - Microsoft®HLLAPI High-Level Language Application Programming InterfaceHMAC Hash-based Message Authentication CodHOC Highest Outgoing ChannelHON Health On the NetHP Hewlett-Packard HPR High Performance RoutingHRC Hybrid Ring Control - FDDIHSCSD High Speed Circuit Switched Data - GSMHSSI High Speed Serial InterfaceHTML Hypertext Markup LanguageHTTP Hypertext Transfer ProtocolHTTP-R Hypertext Transfer Protocol-Reliable. HTTPS Hypertext Transfer Protocol Secure Human Ear 40 Hz to 18000 Hz Human Voice 50 Hz to 400 HzHz HertzII2O Intelligent Input / OutputIAB Internet Activities BoardIANA Internet Assigned Numbers AuthorityIARP Inverse Address Resolution ProtocolIBCN Integrated Broadband Communication NetworkIBEX International Business EXchangeIBM International Business Machines Corporation ICA Intelligent Computing Architecture - Citrix ®ICANN Internet Corporation for Assigned Names and NumbersICE Information Content Exchange ProtocolICMP Internet Control Message ProtocolICP Internet Control ProtocolICQ " I Seek You "ICS Internet Connection SharingID IdentificationIDC Internet Data ConnectorIDE Integrated Device Electronics / Integrated Drive ElectronicsIDI Initial Domain Identifier - ISO AddressingIDN Integrated Digital NetworkIDP Internetwork Datagram ProtocolIDRP Interdomain Routing ProtocolIDS Intrusion Detection SystemIDSL Integrated Services Digital Subscriber LineIDU Interface Data Unit – ISOIE Internet Explorer – Microsoft ®IEC Interexchange CarrierIEEE Institute of Electrical and Electronics Engineers IETF Internet Engineering Task ForceI-FRAME Information FrameIFS Internet File SystemIFTF Interframe Time FillIGMP Internet Group Management ProtocolIGP Interior Gateway ProtocolIGRP Interior Gateway ProtocolIHL Internet Header LengthIHV Independent Hardware VendorIKE Internet Key ExchangeIIOP Internet Inter-ORB ProtocolIIS Internet Information ServerIISP Interim Interswitch Signaling Protocol - ATMILD Injection Laser DiodeIMA Inverse Multiplexing over ATMIMAP Internet Message Access ProtocolIMEI International Mobile Equipment Identity - GSMIEMEISV International Mobile Equipment Identity Software Version - GSMIMP Interface Message Processor - ARPA / DodIMR Interrupt Mask RegisterIMS Information Management SystemIMSI International Mobile Subscriber Identity - GSMIMT-2000 International Mobile Telecommunications 2000IN Integrated NodeIND$FILE IBM File Transfer programINSP Internet Name Server ProtocolINTEL Integrated ElectronicsINTERNET InterNetworking INTRANETI / O Input / Output IP Internet ProtocolIPAA Intel ® Protected Address ArchitectureIPCMOS IPCP Internet Protocol Control PacketIPDS Intelligent Printer Data Stream - IBM ®IPDU Internet Protocol Data UnitIPES IP Exchange Systems - PBX Lucent ®IPEX Internet Protocol Encapsulation of X.25IPG Interpacket GapIPL Initial Program LoadIPM Interpersonal Messaging - X.400IPNG Internet Protocol Next GenerationIPNNI Integrated Private Network-to-Network InterfaceIPO Intelligent Planner OfficeIPP Internet Printing ProtocolIPSec IPSec Internet Protocol SecurityIPTC Internet Protocol Telephony Solution for Carriers – Ericsson IPX Internet Packet Exchange – Novell IR Infra RedIRB Integrated Routing and BridgingIRC Internet Relay Chat - UnixIRDA Infrared Data AssociationIRDB Intelligent Roaming DatabaseIRDP ICMP Router Discovery ProtocolIRL Inter-Repeater LinksIRQ Interrupt Service RequestISA Industry Standard ArchitectureISA Internet Security and Acceleration / ISA 2000 - Microsoft ®ISAM Indexed Sequential Access MethodISAPI Internet Server Application Program Interface IS-IS Intermediate System to Intermediate SystemISDN Integrated Services Digital NetworkISL Inter-Link Switching - Cisco ®ISLU Integrated Services Line Unit - AT&T ®ISO International Organization for StandardizationISP Internet Service ProviderISPF Interactive System Productivity Family – IBM ISS Internet Security System®ISV Independent Software VendorIT Information TechnologyITSP Internet Telephony Service ProviderITU International Telecommunications UnionITV Interactive TelevisionIVR Interactive Voice ResponseIWF InterWorking Function - GSMI3A International Imaging Industry AssociationJJ2EE Java 2 Platform Enterprise EditionJ2P Jpeg 2000 file formatJ2SE Java® 2 Specification EditionJAAS Java Authentication and Authorization ServicesJAIN Java Integrated NetworksJAVA Sun Microsystems JCL Job Control LanguageJCP Java Community Process – Sun JCVM Java Card Virtual Machine – Sun JITTERJLCA Java Language Conversion AssistantJNDI Java Native Directory InterfaceJPEG Joint Photographic Experts Group JRMP Java Remote Method ProtocolJTAPI Java Telephony Application Program InterfaceJTS Java Transaction ServiceJUMP Java User Migration PathJVM Java Virtual MachineJXTA Juxtapose - SUN ®KKBPS Kilobits per secondKERBEROSKERMIT From Kermit after the Muppet showKHz Kilo HertzKMA Kernel Memory AllocationKSH Korn ShellLL2TP Layer-Two Tunneling ProtocolLAMLAN Local Area NetworkLANE Lane EmulatorLAP Link Access ProtocolLAPB Link Access Procedure BalancedLAPD Link Access Procedure channel DLAPF Link Access Procedure F - Frame RelayLAT Local Address TableLCD Liquid Crystal DisplayLCN Logical Channel NumberLCP Link Control Protocol - PPPLDP Label Distribution Protocol - MPLSLDAP Lightweight Directory Access ProtocolLEC Local Exchange CarrierLED Light Emitting Diode LEN Low-Entry Networking - IBMLER Label Edge Router - MPLSLGN Logical Group NumberLI Length Indicator - OSILIA Liaison Inter AutocommutateurLIB Label Information BaseLIC Lowest Incoming ChannelLME Layer Management EntityLINUX Linus TorvaldsLLC Logical Link ControlLLC2 Logical Link Control, type 2LMDS Local Multipoint Distribution Service - TelecomLMI Local Management InterfaceLNB Low Noise Block DownconverterLNM Lan Network ManagerLNMF Local Network Management FunctionLPD Line Printer DaemonLPT1: Line Printer Terminal 1LPP Light-Weight Presentation ProtocolLQR Link Quality Report - PPPLRC Longitudinal Redundancy CheckLRQ Location RequestLSA Link State Advertisements - Cisco ®LSAP Link Service Access Point - OSILSB Least Significant BitLSE Local System Environment - OSILSI Large Scale IntegrationLSL Link Support LayerLSP Label Switching Path - MPLSLSR Label Switch Router- MPLS LSSU Link Status Signal UnitLTO Linear Tape OpenLU Logical Unit – IBM LUN Logical Unit Number – SCSILZW Lempel-Ziv-Welch - File CompressionMMAC Media Access ControlMAP Multi Access Portal – Vivendi / VodaphoneMAN Metropolitan Area NetworkMAU Media Attachment Unit or Multiple Access UnitMB Mega BytesMb Mega BitMbps Mega Bits Per SecondMCA Micro Channel ArchitectureMCH Memory Controller Hub – Intel  MCM Multi Media Conference Manager – Cisco MCR Minimum Cell RateMCS Media Convergent Server – Cisco MCTD Mean Cell Transfer DelayMD5 Message Digest 5MDA Message Digest AlgorithmMDLP Mobile Data Link ProtocolMDSE Message Delivery Service ElementMDX Multi-Dimensional Expression - Microsoft ®MEGA BITS M/BitsMEGA BYTESMEGA HERTZMESH Multi - WAIS Engine for Searching Commercial Host - InternetMESFET Metal Extrinsic Semiconductor Field Effect TransistorMF Multi Frequency MGCP Media Gateway Control Protocol – Cisco MIB Management Information BaseMIDI Musical Instrument Digital InterfaceMIME Multipurpose Internet Mail ExtensionMIPS Millions of Instructions Per SecondMIS Mobile Information ServerMLBA Multi Node Load Balancing ArchitectureMLP Multi Link ProcedureMNLB Multi Node Load BalancingMNP Microcom Networking ProtocolMODEM Modulator / DemodulatorMOV QuickTime MovieMM Multimode Optical FiberMMFS Manufacturing Message Format Standard - MAPMMJ Modified Modular JackMMSM Main Memory System ManagementMNCA Maximum Normalized Cable AttenuationMOTIS Message-Oriented Text Interchange System - ISOMPDS Mobile Packet Data ServiceMPEG Motion Picture Expert GroupMPLS Multi Protocol Label SwitchingMPP Message Posting ProtocolMPPP Message Point-to-Point ProtocolMPPP Multilink Point-to-Point ProtocolMPR Multi Protocol RouterMP3 MPEG1 Layer 3MRSE Message Retrieval Service ElementMRTG Multi Router Traffic GrapherMP3 MPEG1 Layer 3MRCS Multi Rate Circuit Switching MRTG Multi Router Traffic GrapherMSB Most Significant BitMS-DOS Microsoft Disk Operating SystemMSIN Mobile Subscriber Identification Number - GSMMSISDN Mobile Subscriber ISDN Number - GSMMSMQ Microsoft® Message Queue ServerMSN Monitoring Cell Sequence NumberMSN Multi line Subscriber NumberingMSSE Message Security Service ElementMSU Message Signal UnitMSVC Meta Signaling Virtual ChannelMTBF Mean Time Between FailuresMTA Mail Transfer AgentMTL Message Transfer LayerMTS Message Transfer ServiceMTS Microsoft ® Transaction ServerMTU Maximum Transmission UnitMUA Mail User Agents - UnixMUX Multiplex or MultiplexerMVS Multiple Virtual Storage – IBM NNAI Network AssociatesNAK Negative AcknowledgeNAMP North American Numbering PlanNAS Network Access Server – Microsoft NAS Network Attached StorageNASDAQ National Association of Securities Dealers Automated QuotationNAT Network Address TranslationNAT-PT Network Address Translation- Protocol TranslationNAU Network Addressable Units – IBM  NBAR Network Based Application Recognition – Cisco NBT Netbios Over TCP/IPNCP Network Control Program – IBM NDIS Network Driver Interface SpecificationNDS Novell Directory ServicesNETBEUI Netbios Enhanced User InterfaceNETBIOS Network Adapter Basic Input Output SystemNFAR Network File Access RoutineNFAS No Frame Alignment Sequence - TelephonyNFS Network File SystemNGN New Generation NetworkNHDR Network Layer HeaderNHRP Next Hop Resolution ProtocolNIC Network Interface CardNimH Nickel Metal HydrideNIS Network Information Service – UnixNLDM Network Logical Data ManagerNMI Nonmaskable InterruptNMS Network Management SystemNPDU Network Protocol Data Unit – OSINPI Numbering Plan IndicatorNPR Notice of Proposed Rule-MakingNRM Normal Response ModeNRZ Non-return to ZeroNRZI Non-return to Zero InvertedNSA National Security AgencyNSAP Network Service Access Point - OSINSAPI Network Service Access Point Identifier - GPRSNSDU Network Service Data Unit - OSINSP Network Services Protocol NSS Novell ® Storage ServicesNT New Technology - Microsoft ®NT1, 2 Network Terminator, types 1 and 2 - ISDNNTFS NT File SystemNTLM NT LAN Manager authentication. NTT Nippon Telegraph And TelephoneNUI Network User Identification - X.25 networkNVRAM Non Volatile Random Access MemoryNVT Network Virtual TerminalOOAIS Open Archival Information SystemOCA Object Content Architecture - IBM ®OCR Optical Character RecognitionOCX Object Linking and Embedding controlODA Office Document Architecture - ISOODBC Open Database ConnectivityODI Open Data-Link InterfaceODIF Office Document Interchange FormatODR Operational Data StoreOEIC Opto-Electronic Integrated CircuitOEM Original Equipment ManufacturersOFDM Orthogonal Frequency Division MultiplexingOH OverHeadOLAP Online Analytical ProcessingOLE Object Linked EmbeddedOLEBD Object Linked Embedded DatabaseOLED Organic Light Emitting DiodesOLTP Online Transaction ProcessingOLTS Optical Loss Test SetsOMG Object Management Group O-MSP Optical Multiplex Section ProtectionOMT Object Modeling TechniqueONI Optical Network InterfaceOPC Originating Point CodeOPT Open Packet TelephonyOPX Off-Premises ExtensionORB Object Request BrokerORG OrganizationOS Operating SystemOSI Open Systems InterconnectionOSI-RM OSI Reference ModelOSI-TP OSI Transaction ProcessingOSI/CS OSI Communication SubsystemOSI/FS OSI File Services - IBM ®OSIE OSI Environment - ISOOSPF Open Shortest Path FirstOSPM Operating System-Directed Power ManagementOSR2 Operating System Release 2 – Microsoft  / Windows 95 OTDR Optical Time Domain ReflectometerOTFT Organic Thin Film TransistorsOTS OSI Transport ServicesOU Organization UnitOUTWATS Outgoing Wide-Area Telephone ServicePP3P Platform for Privacy PreferencesPAD Packet Assembler-DisassemblerPAL Phase Alternate Line - TVPAM Pulse Amplitude ModulationPAP Password Authentication Protocol - PPPPAR Positive Acknowledgement + Retransmission P/AR Peak-to-Average RatioPASCALPAT Port Address TranslationPBX / PABX Private Automatic Branch ExchangePCI Peripheral Component Interconnect or Interface PCI Protocol Control Information - ISOPCL Printer Control Language - Hewlett PackardPCM Pulse Code ModulationPCMCIA Personal Computer Memory Card Internation AssociationPCN Path Control NetworkPCR Peak Cell RatePCS Personal Communication System - GSMPCS Polymer Clad SilicaPCS Private Certificate Services - Verisign ®PCVS Point to Point Switched Virtual ConnectionsPCX PiCture eXchangePDA Personal Digital AssistantPDC Personal Digital CellularPDC Primary Domain Controller - Windows NTPDF Portable Document Format file / Package Definition FilesPDH Plesiochronous Digital Hierarchy - commentPDN Public Data NetworkPDP Packet Data Protocol - GPRSPDT Printer Definition TablesPDU Packet Data UnitPDU Protocol Data UnitPEC Primary Enterprise ControllerPEL Picture ElementPERL Practical Extraction and Report LanguagePFM Pulse Frequency Modulation PGI Parameter Group Identifier - ISOPGP Pretty Good PrivacyPHP Hypertext PreprocessorPHY FDDI physical sub layer - designation for FDDI fiber-optic cables.PIC Picture File PIM Protocol Independent MulticastPIN Personal Identification NumberPINFET PIN Photodiode/field Effect TransistorPINE Program for Internet News and E-mailPING Packet Internet GroperPIXEL Picture CellPKCS Public Key Cryptography StandardsPKI Public Key InformationPLCP Physical Layer Convergence ProcedurePLU Primary Logical UnitPM Phase ModulationPMD Physical Medium Dependent specification - FDDIPMPO Pick Music Power OutputPMR Private Mobile RadioPNG Portable Network GraphicsPPNI Private Network-to-Network Interface - ATMPNP Plug And PlayPNP Private Numbering PlanPOP3 Post Office Protocol Version 3POP Point of Presence / Post Office ProtocolPOTS Plain Old Telephone ServicePPDU Presentation Protocol Data UnitPPGA Plastic Grid Pin Array – Intel PPM Page(s) Per MinutePPM Pulse Position Modulation PPN Public Packet NetworkPPP Pay Per ViewPPP Point to Point ProtocolPPTP Point to Point Tunneling ProtocolPQA Palm Query ApplicationPRI Primary Rate InterfacePRM Product Relationship ManagementPROFS Professional Office SystemPROM Programmable Read Only MemoryPS Packet SwitchPS/2 Personal System / 2PSC Primary Site ControllerPSDN Packet-Switched Data NetworkPSN Packet Switch NodePSPDN Packet Switched Public Data NetworkPSTN Public Switched Telephone NetworksPTI Packet Type IndicationPTR Pointer ReversePU Physical Unit – IBM PU 2.1 Physical Unit 2.1 - IBM ®PUK Personal Unblocking CodePVC Permanent Virtual CircuitPXE Pre-boot Execution EnvironmentQQAM Quadrature Amplitude ModulationQBE Query By Example - DatabaseQBIC Query By Image Content - IBM ®QLLC Qualified Logical Link ControlQNX Quick Unix ®QOS Quality Of Service QPSK Quadrature Phase-Shift KeyingQPSX Queue Packet and Synchronous Circuit ExchangeQSIGRRA Registration AuthorityRACF Resource Access Control FacilityRACH Random Access Channel - GSMRADIUS Remote Authentication Dial-in User Service RAF Resource allocation frameRAI Remote Alarm Indication, or IndicatorRAID Redundant Array of Independent DisksRAM Random Access MemoryRANDOMRARP Reverse Address Resolution ProtocolRAS Remote Access ServerRAS Remote Access Service – Microsoft RBS Robbed-Bit SignalingRC Release CandidateRCP Real-Time Control ProgramRD Receive DataRDBMS Remote Data Base Management SystemRDF Resource Denied FrameRDF Resource Description FrameworkRDNIS Redirected Dial Number Id ServiceRDO Remote Data Objects. Microsoft®. RDP Reliable Datagram ProtocolRDRAM Rambus Dynamic Random Access MemoryRDS Radio Digital SystemRDTD Restricted Differential Time DelayRED Random Early Detection - Cisco ® REJ Reject - a link protocol commandREL Release MessageREP ReplyRET Resolution Enhancement Technology - Hewlett-Packard ®REV Reverse - callingRF Radio FrequencyREXX Restructured Extended ExecutorRFC Request For CommentsRFT Revisable Form Text - File SystemRGB Red Green BlueRI Ring In – Token-RingRI Ring IndicatorRI Routing InformationRIC Real Time Interface Co-processor - IBM  or RTICRIF Routing Information FieldRIFF Resource Interchange File Format - Microsoft ®RIM Research In MotionRIMM Rambus In-line Memory ModulesRIP Raster Image Processor - MicroprocessorRIP Routing Information ProtocolRISC Reduced Instruction Set ComputerRJ-11 /12 / 45 Registered JacksRJE Remote Job EntryRLE Run Length Encoded - File CompressionRLL / WLL Radio in the Local Loop / Wireless Local LoopRLL Run Length LimitedRLOGIN Remote Login - UnixRLP Radio Link ProtocolRLSD Receive Line Signal DetectRM cells Rate Management cells - ATM RMI Remote Method InvocationRMON Remote MonitorRMS Root Mean SquareRMT Ring ManagementRNR Receive Not ReadyRO Ring Out – Token-RingROM Read Only MemoryROSE Remote Operations Services Element.RouterRPC Remote Procedure CallRPE – LTP Regular Pulse Excitation-Long Term Prediction/Linear Predictive CoderRR Receiver ReadyRR Round RobinRRAS Routing and Remote Access ServiceRSA Rivest, Shamir, AdlemanRSH Remote Shell - UnixRSRB Remote Source Route Bridging – Cisco RSVP Resource reSerVation ProtocolRT Radiotext - RDSRTC Real Time ClockRTCP Real-Time Transport Control ProtocolRTF Rich Text FormatRTIC Real Time Interface Co-processor - IBM RTF Rich Text FormatRTM Response Time MonitorRTMP Routing Table Maintenance ProtocolRTP Real Time Protocol - RFC 1889RTPM Real Time Performance MonitorRTS Request To SendRTSP Real-Time Streaming Protocol RTT Radio Transmission TechnologyRU Request Unit – IBM  RX ReceiveSSA Source AddressSAA Systems Application Architecture – IBM SABM Set Asynchronous Balanced ModeSABME Set Asynchronous Balanced Mode ExtendedSACD Super Audio CD - Philips ®, Sony ®SACL System Access Control ListSAM Security Access Manager – Windows SAM Sequential Access MethodSAM System Activity Monitor - UnixSAN Storage Area NetworkSANS Institute System Administration Networking and Security ®SAP Service Access Point – IBM SAP Systems, Applications, and Products in Data Processing Systeme und Anwendungs Programme in der DatenverarbeitungSAPI Service Access Point IdentifierSAR Segmentation and ReassemblySARM Set Asynchronous Response ModeSASE Specific Application Service Element - OSISAX Simple API for XMLSChannel Secure Channel. SCL Soap Contract Language - Microsoft ®SCM Supply Chain ManagementSCO The Santa Cruz Operation SCP Service Control PointSCSI Small Computer Standard InterfaceSDCD Secondary Data Carrier Detect SDCCH Stand Alone Dedicated Control Channel - GSMSDDI Shielded Distributed Data Interface - FDDISDH Synchronous Digital HierarchySDK Software Development Kit - Microsoft ®SDLC Synchronous Data Link ControlSDMA Spatial Division Multiple Access - GSMSDMI Secure Digital Music InteractiveSDRAM Synchronous Dynamic Random Access MemorySDSL Symmetric Asymmetrical Digital Subscriber LineSDSU SMDS Data Service UnitSDU Service Data Unit – OSISDV Segment Delay ValueSECAM Sequential a Memoire - French color TV StandardSEP Scalable Encryption ProcessingSEQ SequenceSET Secure Electronic TransactionSFH Slow Frequency Hopping - GSMSFT System Fault ToleranceSFTP Shielded Foil Twisted Pair - cableSG Signal Ground - ModemSGML Standard Generalized Markup LanguageSGMP Simple Gateway Monitoring Protocol - RFC 1028. Evolved into SNMPSH Bourne ShellSHA Secure Hash AlgorithmSI Secondary InSID Security Identifier – Microsoft SID Signaling IdentifierSIM Subscriber Identify ModuleSIMD Simple Instruction Multiple Data – Intel SIMM Single In-line Memory ModuleSITA Societe Internationale de Telecommunications Aeronautiques SL Section Layer - SonetSLA Service Level AgreementSLARP Cisco Serial Line Address Resolution ProtocolSLIP Serial Line Internet ProtocolSLM Service Level ManagementSLOC Source Lines of Code / Software Lines of CodesSLR Scalable Linear Tape - Tandberg Data®SLU Secondary Logical UnitSMB Server Message BlockSMC Sleep Mode ConnectionSMDI Simple Message Desk Interface – Cisco SMDS Switched Multimegabit Data ServiceSMF Single-Mode Fiber - FDDI networksSMF-PMD Single Mode Fiber-Physical Medium DependentSMH Signal Message HandlingSMI Structure of Management Information. RFC 1155 SMIL Synchronized Multimedia Integration LanguageS/MIME Secure Multipurpose Internet Mail ExtensionSMIT System Management Interface Tool - UnixSML Service Management LayerSMP Symmetric Multiprocessing - Microsoft ®SMS Short Message ServicesSMS Systems Management Server – Microsoft SMT Station ManagementSMTP Simple Mail Transfer ProtocolSN Subscriber NumberSNA System Network Architecture – IBM SNADS SNA Distribution ServicesSNAP Sub Network Access ProtocolSNDCP Subnet Dependent Convergence Protocol - ISO SNI SNA Network InterconnectionSNIC Subscriber Network Interface CircuitSNICP Subnet Independent Convergence Protocol - ISOSNMP Simple Network Management ProtocolSNPA Subnetwork Point of AttachmentSNPP Simple Network Paging Protocol - RFC 1861SNTP Simple Network Time Protocol - RFC 2030SO Secondary OutSOAP Simple Object Access ProtocolSOH Start Of HeaderSOH Section OverheadSOHO Small Office-Home OfficeSOI Silicon On Insulator – IBM SOM Start Of MessageSONET Synchronous Optical NetworksSPARC Scalable Processor Architecture Reduced instruction set Computer – Sun SPDU Session Protocol Data UnitSPE Synchronous Payload Envelope - SonetSPID Service Protocol IdentifierS/PDIF Sony ® Philips ® Digital InterfaceSPP Standard Parallel PortSPX Sequenced Packet ExchangeSQL System Query LanguageSQR Structured Query Report WriterSR Source RoutingSRAM Static Random Access Memory or static RAMSREJ Selective RejectSRF Status Report FrameSRM Services Relationship ManagementSRPI Server Requester Programming Interface – IBM  SRT Source Routing TransparentSRTB Source Routing Transparent BridgeSRTS Synchronous Residual Time StampSRTS Secondary Request To SendSS7 Signaling System Number 7SSAP Session Service Access PoinSSB Single SidebandSSCP System Services Control Point – IBM SSFDC Solid State Floppy Disk Card - See Memory CardSSH Secure ShellSSI Server-Side IncludeSSID Service Set Identifier - GPRSSSL Secure Socket LayerSSP Security Support ProviderSSP System Query Language Server Standard – Microsoft SSP Storage Service ProvidersSSPI Security Service Provider InterfaceSSRT Subsecond Response TimeST Spanning TreeSTE Spanning Tree ExplorerSTM Synchronous Transport ModuleSTP Shielded Twisted Pair - cableSTP Spanning Tree ProtocolSTS Synchronous Transport Signal - SonetSTSPP Synchronous Transport Signal Payload Pointer - SonetSU Subscriber UnitSVC Switched Virtual CircuitSVG Scalable Vector GraphicsSVGA Super Video Graphics ArraySYNCHRONOUS SYSOP System OperatorSYSPREP System Preparation ToolSWAP Superior Wireless Applications - Tivoli ® - RS/600 SupervisionSWIFT Society of Worldwide Interbank Financial TelecommunicationsTTA Traffic-Announcement RDSTAC Technical Assistance Center - Cisco ®TAD Technical Audio DeviceTAPI Telephony Application Program InterfaceTB Terra BytesTBW Thermo Balanced Writing - Philips ®TC Transmission ControlTCA Target Channel AdapterTCO Total Cost of OwnershipTCP Transmission Control Protocol TCP/IP Transmission Control Protocol / Internet ProtocolTD Transmitted DataTDC Tabular Data ControlTDD Time Division Duplex - TDMATDM Time Division Multiplexing TDMA Time Division Multiple AccessTDMA / Edge Time Division Multiple Access / Enhanced Data Gsm EnvironmentTDR Time Domain ReflectometerTEI Terminal Endpoint IdentifierTELNET Telecommunications Network ProtocolTETRA Terrestrial Trunked Radio - ™TEFLOPS Tera Floating-point Operations Per SecondTFT Thin Film TransistorTFTP Trivial File Transfer ProtocolTGP Thumbnail Gallery Post TH Transmission HeaderTI Texas Instruments ®TIC Token-Ring Interface CouplerTIFF Tagged Image File Format – Aldus TLD Top Level DomainTLS Transport Level SecurityTOS Type Of ServiceTP Transport Protocol - ISOTP Traffic-Program Identication RDSTPF Transaction Processing Facility - IBM ®TPON Telephony Passive Optical NetworkTR Token-RingTRANSCEIVER Transmitter-receiverTRAU Transcoder / Rate Adaptor Unit - GSMTRID OLE Transaction IdentifierTSAP Transport Service Access PointTSAPI Telephony Services ApiTSB Transport Service BridgeTSDU Transport Service Data UnitTSP Telephony Application Program Interface Service ProviderTSQL Transact SQLTSR Terminate and Stay ResidentTSSI Time Slot Sequence IntegrityTST Transparent Spanning Tree.TTF True Type FontTTL Time To LiveTTL Transistor -Transistor LogicTTY TeletypeTUI Telephony User InterfaceTUP Telephone User Part TWAIN Technology Without An Interesting FormatTWB Thermo Balanced WritingTX Transit ExchangeUUA Unnumbered AcknowledgementUAE User Agent EntityUART Universal Asynchronous Receiver TransmitterUBR Unspecified Bit Rate - ATMUCS Universal Character SetUDA Universal Data AccessUDB Universal DatabaseUDDI Universal Description Discovery and IntegrationUDF Universal Disk FormatUDDI Universal Description, Discovery and IntegrationUDI Unrestricted Digital Information - GSMUDLR Unidirectional Link RoutineUDMA Ultra Direct Memory AccessUDP User Datagram ProtocolUHF Ultra-High FrequencyUI User InterfaceUI Unnumbered Information – UNIXUID User IdentificationUIML User Interface Markup LanguageUIO Universal I/O serial port - Cisco ®UML Unified Modeling LanguageUMTS Universal Mobile Telecommunications SystemsUNA Upstream Neighbor AddressUNC Universal Naming ConventionUNI User Network InterfaceUNIX Uniplex Information and Computer Services UONE Unified Open Network Exchange – Cisco UPS Uninterrupted Power SupplyURI Uniform Resource Identifier - RFC 1630URL Uniform Resource LocatorsURN Uniform Resource Name - RFC 1737USART Universal Synchronous Asynchronous Receiver / TransmitterUSB Universal Serial BusUSCW Uncacheable Speculative Write CombiningUSPARC Ultra Scalable Processor Architecture Reduced instruction set Computer USB Universal Serial BusUSCW Uncacheable Speculative Write CombiningUSOC Universal Service Order CodesUSPARC Ultra Scalable Processor Architecture Reduced instruction set ComputerUTP Unshielded Twisted Pair - cableUTRA UMTS Terrestrial Radio Access. The ETSI term for WCDMA.UUCP UNIX-to-UNIX Copy ProgramVV.24 24 Pins serial connectorVAN Vehicle Area NetworkVAP Value Added ProvidersVAR Value Added ResellerVAX Virtual Access ExtendedVB Visual BasicVC Virtual CircuitVCA Voltage Controlled AmplifierVCC Virtual Channel ConnectionVCI Virtual Circuit IdentifierVDM Virtual Device MetafileVDSL Very High Data Rate Digital Subscriber LineVESA Video Electronics Standards Association VF Voice FrequencyVGA Video Graphics Array – IBM  VHDCI Very High Density Cable InterconnectVHF Very High FrequencyVIC Voice Interface CardVINES Virtual Network System - Banyan ®VISP Virtual Internet Service ProvidersVJS Visual JavascriptVLAN Virtual Lan Area NetworkVLM Virtual Loadable Module - Novell ®VLSI Very Large Scale IntegrationVLSM Variable Length Subnet Mask - Cisco ®VM / CMS Virtual Machine / Conversational Monitor System – IBM VML Vector Markup LanguageVMPS VLAN Membership Policy ServerVMS Virtual Machine / Storage - Os DEC for Vax machines VOFR Voice Over Frame RelayVOIC Voice Interface CardVOIP Voice Over IPVOM Volt-Ohm-MeterVP Virtual Path – ATMVoXML Voice over XMLVPC Virtual Path Connection - ATMVPCI Virtual Path Connection Identifier - ATMVPI Virtual Path / Packet IdentifierVPN Virtual Private NetworkVQP VLAN Queuing ProtocolVRAM Volatile Random Access MemoryVRC Vertical Redundancy CheckVRML Virtual Reality Modeling Language VRMP Voyager Remote Method ProtocolVSAM Virtual Storage Access MethodVSAT Very Small Aperture - Satellite - TerminalVSWR Voltage Standing Wave RadioVTAM Virtual Telecommunications Access Method – IBM VTOA Voice and Telephony Over ATMVTN Virtual Telephony NetworkVTP VLAN Trunk ProtocolVTSP Voice Telephony Service ProviderWWAE Wireless Application EnvironmentWAM Web Application ManagerWAN Wide Area NetworkWAP Wireless Application Protocol WAS Web Attached StorageWATS Wide Area Telephone ServiceWAV Waveform sound - MicrosoftWCCP Web Cache Control Protocol - Cisco ®WCDMA Wireless Code Division Multiple AccessWCDMA Wideband Code Division Multiple AccessWCM Web Content ManagementWDMA WidebandWDM Wavelength Division MultiplexerWDM Win32 Driver Model - Microsoft ®WDP Wireless Datagram ProtocolWDS Wireless Delivery ServersWEBWebDAV Web Distributed Authoring and VersioningWEP Wired Equivalent PrivacyWFQ Weighted Fair Queuing – Cisco  WINS Windows Internet Name ServiceWIN WAP Identication ModuleWindows  ME Windows Millenium Edition ®WINS Windows Internet Name ServiceWinsock Windows SocketsWMF Windows Metafile WLAN Wireless Local Area NetworkWML Wireless Markup LanguageWORM Write Once Read ManyWOSA Windows Open System ArchitectureWPAD Web Proxy Autodiscovery ProtocolWRED Weighted Random Early DetectionWRR Weighted Round Robin – Cisco WSA Web Service ArchitectureWSDL Web Services Description LanguageWSH Windows Scripting HostWSL Wireless Markup LanguageWSS Wireless Synchronization ServersWTLS Wireless Transport Layer SecurityWTS Wireless Transport SecurityWWN World Wide NameWWRE World Wide Retail ExchangeWWW World Wide WebW3C World Wide Web Consortium WYSIWYG What You See Is What You GetXXAML Extensible Authority Markup Language - IBM ® / HP ® / Oracle ® / SUN ® / Brownstreet.com ®XDR XML Data Reduced ®XGA Extended Graphics Array – IBM  XHTML eXtensible Hypertext Markup LanguageXID Exchange Identification – IBM XKMS XML Key Management SpecificationXLink XML Linking LanguageXMCL Extensible Media Commerce Language - RealNetworks ®XMCP X Display Manager Control ProtocolXML Extensible Markup LanguageXMS Extended Memory SpecificationXNS Xerox  Network ServicesX-OFF Exchange OFF - ModemX-ON Exchange ON - ModemXOR Exclusive ORXOT X.25 Over TCP-IP - RFC 1613XP XML ProtocolXRML Extensible Rights Markup Language - Microsoft ®XSL Extensible Stylesheet Language XSLT XML Stylesheet Language TransformationXTP Express Transport ProtocolXUL eXtensible User Interface LanguageYY-Modem Error-free file transfer protocol that can be used on error-corrected links and to transfer multiple files with a single commandYP Yellow PagesZZBTSI Zero Byte Time Slot InterchangeZIP Zone Information ProtocolZ-Modem Error free file transfer protocol that supports multiple file transfers, plus many other advanced features.

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