BSC BTS Buroufax service Burst ID number Business Cordless Telephony Cable television system Caching Cadence Call Call Admission Control (CAC) Call center Call control (CC) Call Detail Recording Call distribution (CD) Call forwarding (CF) Call forwarding on mobile subscriber busy(CFB) Call forwarding unconditional (CPU) Call gapping (GAP) Call hold (CH) Call hold with announcement (СНА) Call indicating device Call Level Interface Call limiter(LlM) Call logging (LOG) Call management Call number Call queueing(QUE) Call rerouting distribution (CRD) Call transfer (CT) Call waiting (CW) Caller ID Calling number identification presentation (CNIP) Calling number identification restriction (CNIR) Calling party identification presentation (CPIP) CAP " Carbone microphone CardBus Carried radio station Carrier (subcarrier) modulation Carrier service Carrier shift keying Carrier-Sense Multiple Access/Collision Detection CAS Cause indication CDCS CDMA CDHA2000 CDMAone CDPD CDR Cell Cell Delay Variation (CDV)
Cell error ratio (CER) Cell Interarrival Variation (CIV) Cell loss ratio (CLR) Cell Multiplexing/Demultiplexing Cell-Loss Priority (CLP) Field Cells in Frames (CIF) Cells in Frames end-station and attachment device (CIF-ES and CIF-AD) Cellular communication network Cellular Digital Packet Data Cellular network Cellular Radio Centimetric waves Central exchange Central Office(CO) Central Processor Unit CEPL CEPT CER CGI Channel identifier Channel Service Unit Channel time-slot Character Per Second Charge Charging CICS Circuit Emulated Services (CES) Circuit Emulation Modes Circuit Emulation Services (CES) Circuit switching Circular polarized radio wave C1T CLAIT Classical IP and ARP over ATM CLI Client Client/Server Closed user group (CUG) CO Code excited linear prediction (CELP) Code Generator CODEC Code-Division Multiple Access Code-Excited Linear Prediction Collision control bits Colour code Common access channel (CAC) Common battery telephone set Common channel signaling system Common control channel (CCCH) Common Gateway Interface Common Part Convergence Sublayer (CPCS)
Common platform Соmmon programming Interface for Communications Communication Communication microeconomic Communication networks intercommunication Communication networks interworking Communications server Community reception (in broadcasting satellite service) Community television reception system Compatibility- Completion of calls to busy subscriber (CCBS) Completion of calls when subscriber not reachable (CCNRc) Compressed SLIP Compression-Decompression Computer Literacy and Information Technology Computer network Computer Supported Telecommunications Application Computer Telephony Integration Computer-Integrated Telephony Computerized Attendants Unit Conference-call (CON) Confidential information Confidentiality Confirm primitive Conformance certificate Conformance mark Congestion collapse Congestion Control Connected number identification presentation (CONP) Connected number identification restriction (CONR) Connecting path Connection Admission Control (CAC) Connection Service Connectionless Communications Connectionless service Connection-Oriented Communications Constant Bit Rate (CBR) Consultation calling (COC) Consultative Committee for International Telegraph and Telephone Continuous Dynamic Channel Selection Control channel structure information Control field extension bit Convergence Sublayer (CS) Convergence Sublayer Protocol Data Unit (CS-PDU) Conversational service Conversion emission Conversion frequency reception channel Cordless telephone set Core network CPE CPI-C2.0 CPS
CPU Credit card calling (CCC) Crossbar exchange (entity) Crystal microphone Crystal receiver CS CSLIP CSMA'CD CSTA CSU CTI CTI Encyclopedia Current cell rate (CCR) Customer Information Control System Customer Network Management (CNM) Customer Premises Equipment Customized recorded announcement (CRA) Cyclic Redundancy Check (CRC) D Channel DAA DAC D-AMPS DASL Data Access Arrangement Data circuit - terminating equipment (DCE) Data Communication Equipment Data country code (DCC) Data Encryption Standard Data Exchange Interface (DXI) Data integrity Data network Data station Data terminal equipment (DTE) Data transmission Data transmission service Data Trunk Interface DAWS DBm DCE DDI Dead Spot Decade step-by-step exchange Decametric waves Decimetric waves Decimillimetric waves DECT Delivery Report Dependability Deregulation DES Dial Dialed Number Identification Service
Differencial PSK Differencial QPSK Differential electromagnetic receiver Differential phase carrier shift keying Digital Adapter Subscriber Loop Digital Advanced Mobile Phone System Digital Advanced Wireless System Digital automatic exchange Digital Enhanced Cordless Telecommunications Digital Matrix Switch Digital public communication network Digital Service Unit Digital Signal level 3 Digital Signal Processor Digital Simultaneous Voice and Data Digital Subscriber Line Digital Video Disc Digital-to-Analog Converter Direct amplification receiver Direct Driver Interface Direct3D Direct-action selector Directional antenna Display Phone Distant tropospheric scatter radio waves propagation Distinating user prompter (DUP) Distinalion call routing (DCR) Distribution network Distribution service Diversity radio reception DIVX DMX DNIS DNS Document message Domain Name Domain Name Server Domain Name System (DNS) Double frequency simplex radiocommunication Double-side band radio transmission Downlink (satellite) Downlink (terrestrial) DPSK DQPSK DS-3 DSL DSLIP DSP DSS-1 DSU DSVD DTE
DTI DTMF DTMF cut-through Dual mode station (DMS) Dual Tone Multifrequency Duopoly Duplex radiocommunication DVD Dynamic control (of traffic) Dynamic radio receiver range Dynamic SLIP
E1
E3 Early Packet Discard (EPD) Earth station ECC Edge EFCI EGP Electrete microphone Electrodynamic microphone Electrodynamic receiver Electromagnetic microphone Electromagnetic receiver Electromechanical selector Electronic exchange(entity) Electronic Mail (e-mail) Electronic telegraph switching exchange Electronic voice mail Elementary electromagnetic receiver Elliptic curve cryptosystem Emergency service Emulated Local-Area Network (ELAN) Encoded Information Type (EIT) Encryption Enhanced data rates for global evolution Enhanced Throughput Cellular Equivalent isotropically radiated power Error-Correcting Code ETC Ethernet Ethernet 802.2 Ethernet 802.3 Ethernet II ETSI EUnet Evolution Evolution towards FPLMTS Explicit Forward Congestion Indication Explicit Forward Congestion Indication (EFCI) Exterior Gateway Protocol Exterior link
Exterior reachable address Extremely high frequency Fail-safety Falling radio wave FAQ Far-end remote failure (FERF) Fault Fault correction Fault recognition Fax-back Fax-mailbox Fax-on-demand Fax-server FDDI Feeder Feeder link Feeder link (satellite) Fiber Distributed Data Interface Fiber Optics Fiber To The Apartment Fiber To The Building Fiber To The Curb Fiber To The Home Fiber To The Office Fiber To The Optimum Fiber To The Remote Fiber To The Zone FIDO File Transfer Protocol Firewall Fixed personal terminal Fixed satellite service Fixed service Fixed-access Fixed-mounted station Flow Control Flow control function FOD Follow-me diversion (FMD) Forward Error Correction (FEC) FPLMTS access provider FPLMTS network operator FPLMTS radio interface FPLMTS service profile FPLMTS service provider FPLMTS user FPLMTS user mobility FR FRAD Frame Frame Relay Frame Relay Access Device
Frame synchronization word Freephone (FPH) Frequency band Frequency bandwidth Frequency carrier modulation Frequency carrier shift keying Frequency range Frequently Asked Questions Front-End Processor FTP FTTA FTTB FTTC FTTH FTTO FTTOpt FTTR FTTZ Functional architecture Functional entity Functional interface Functional model Future public land mobile telecommunications system (FPLMTS) Gatekeeper Gateway Controller Interface Gateway GPRS Support Node Gaussian Minimum-Shift Keying GCI General Packet Radio Service. General Security Services API Generic Flow Control (GFC) Field Geostationary satellite orbit (GSO) GGSN Gigabit IP Router (GIPR) Global network Global service area Global System for Mobile communications GMSK Good state Gopher GPRS Great community television reception system Ground radio wave Ground wireless station Group link GSM GSS-API Guaranteed frame rate (GFR) H.233 H.261 H.320 H.323
H.324 Half Duplex Handheld-Device Markup Language Handled radio station Handover Handover initiation and decision (HID) Handset HDML HDR HDSL Header Header Error Control (НЕС) Hectometric waves Hello Protocol HFC High data Rate High frequency High Speed Technology Highly inclined elliptical orbit High-Speed Circuit-Switched Data High-speed Digital Subscriber Line HIVR HLR Home location register (HLR) Home Location Regulator Host Interactive Voice Response Host Signal Processing Hot spot capacity Housekeeping bit HSCSD HSP HST HTML Hub Hybrid Fiber/Coax Hypertext Markup Language ICMP ID ID control field ID display field IDEN Identification Identifier
ILMI IMA control protocol (ICP) Image channel Image circuit IMT-2000 IN Incall modification (IM) Incoming information switching entity Indication primitive Individual reception (in broadcasting satellite service) Industrial radio interference Industry Standard Architecture Information Information Appliances Information availability Information capacity Information center mailboxes Information How Information integrity Information processing devices Information security Information system Informatization InfraRed Data Infrared Data Association Input radio receiver circuit Integrated Digital Enhanced Network Integral Digital Network (IDN) Integrated messaging, unified messaging Integrated Services Digital Network Integrated services digital network (ISDN) Integrated services network Integration Integrity Intelligence network Intended recipient identification presentation (IR1D) Interactive service Interactive Voice Response Intercell handover Interface Interference radio waves fading Interim Interswitch Signaling Protocol (IISP) Interim Local Management Interface (ILMI) Interior Gateway Protocol Intermediate frequency reception channel Intermediate line Intermediate radio relay station Intermediate system Intel-modulation emission International charged subscriber identifier (ICSI) International exchange International mobile equipment identity (IMEI)
International mobile telecommunications International mobile user identity (IMUI) International mobile user number (IMIJN) International telecommunication network Internet Internet address Internet Control Message Protocol Internet Engineering Task Force Internet Gateway Routing Protocol Internet Packet eXchange/Sequenced Packet eXchange Internet Protocol Internet Protocol Datagram Internet Protocol Telephony Internet Server API Internet Telephony Gateway Internet Telephony Server Internet Telephony Service Provider Interoperability Inter-satellite service Intersystem interference Interworking Interworking Functions Interzone exchange network Intracell handover Intranet Intrasystem interference Inverse Multiplexing for ATM (IMA) Inverse multiplexing over ATM (IMA) Investments IP IP address IP datagram IP protocol IP-over-ATM IPT 1PX/SPX IRD IrDA IS-41 IS-95 ISA ISAPI ISDN ISDN Data Link Control Isotropical antenna ISUPLANE ITG ITS ITSP IVR lWF
Junction transmission line Know-how LAN LAN Emulation LAN Emulation Client LAN Emulation Configuration Server LAN Emulation Network Node Interface (LNNI) LAN Emulation Network-to-Network Interface (LNNI) LAN Emulation Server LAN Emulation User Network Interface (L-UN1) Land earth station (LES) Leaky Bucket Algorithm Leased channel Leased circuit Leased line Leaser LEC LECS Left-hand polarized radio wave LES License License Server API Limited service area Limiting receiver .sensibility Linear polarized radio wave Line-of-site distance Line-of-site radio relay link Line-of-site radiocommunication Link access procedure for digital cordless (LAPDC) Link access procedure for digital mobile channel (LAPDM) LMDS Local Area Network Local area network (LAN) Local battery telephone set Local connection switchboard Local exchange (LE) Local group Local Multipoint Distribution Services Local telephone network Location confidentiality Location identity Location service Logical channel Loss of signal (LOS) Loudspeaking telephone set Low frequency Low-Earth orbit (LEO) LSAPI MAC Macro cells Macro diversity Magneto
Mailbox Mailing List Maintainability performance Maintenance Maintenance support performance Malicious call identification (MCI)
MAN Manchester-11 Man-machine language (MML) Man-machine terminal Manual telephone set MAPI Masquerade Mass calling (MAS) MAU Maximum burst size (MBS) Maximum cell delay variance (MCDV) Maximum cell loss ratio (MCLR) Maximum input radio receiver signal power Maximum Transmission Unit Mbps, Mbit/s MBS MC-CDMA MC-DC-CDMA MCDN MCU MDS Mean radio transmitter power Measurement mode Mechanical selector Mechanical switching element Media Access Control Mediation function (MF) Medium Attached Unit Medium frequency Medium-Earth orbit (MEO) Mega (satellite) cells Message Message delivery Message Envelope Message field Message handling service Message Handling System (MHS) Message ID Message Store Message switching Message Transport Protocol Service Messaging API Messaging service Metasignaling Metric waves Metropolitan Area Network
МЕхЕ MHS Micro cells Micro Cellular Digital Network Micro diversity' Microcom Networking Protocol Microphone Microphone capsule Migration to FPLMTS Millimetric waves Millions of lnstractions Per Second Minimum cell rate (MCR) MIPS Mirror antenna Mirror frequency Mirror reception channel MMDS МММ MNP Mobile Broadband System Mobile communication network Mobile earth radio station Mobile earth station (fixed) (MESt) Mobile earth station (MES) Mobile Execution Environment Mobile Media Mode Mobile radio station Mobile radiocommunication Mobile satellite radiocommunication Mobile satellite service Mobile service Mobile service switching entity network architecture Mobile services switching centre (MSC) Mobile station (fixed) (MSt) Mobile station (MS) Mobile station identifier (MSI) Mobile Switching Center Mobile termination (MT) Mobility management (MM) Mobility manager Mobility manager identifier Mobility service Modulated radio signal Modulating signal Modulation Motion Picture Experts Group MPEG MPLS MSC MT-CDMA MTPS MTU
Multi freqency radio transmitter functioning mode Multiband terminal Multicarrier CDMA Multicast Address Resolution Server (Mars) Multichannel MDS Multiframe operation mode Multimedia Multimedia service MuWmode terminal Multipath radio waves propagation Multiphysical (MultiPHY) Port Multiple subscriber number (MSN) Multiplex number of location registration area Multiplicative radio interference Multipoint Control Unit Multipoint Distribution Service Multiprotocol Encapsulation Over ATM Multiprotocol Label Switching Multi-satellite link Multi-signal radio receiver selectivity Multi-Vendor Integration Protocol Multiwav Communications MVIP Narrow-band frequency carrier modulation Narrow-band radio frequency signal NAT National service area National telecommunication network Network Interface Module NDPS Necessary bandwidth Nefrnail Net phone Netscape Server API NetWare NetWare Distributed Print Services NetWare Link Services Protocol NetWare Loadable Module Network Network Adapter Network Address Translation Network architecture Network element function (NEF) Network entity Network integration Network Interface Module Network interworking Network link Network OS Network performence (NP) Network Protocol Service Network service access point (NSAP)
Network Service Port Network station Network structure Network Terminal Interface Network-toNetwork Interface (NNI) NIM NLM NLSP NLU NMT Node radio relay station Non-directional antenna Non-fixed access Non-switched telecommunication network Nordic Mobile Telephony Normalize antenna radiation pattern NOS NPS NSAPI NSP NTI Object Linking and Embedding Object Orientation Occupied bandwidth ODBC OFDMCDMA Oil-net access (OFA) Off-net calling (ONC) OLE ONE One number (ONE) One-way radiocommunication On-hook dialing ONS Open Database Connectivity Interface Open Network Software Open Shortest Path First Open System OpenGL Operabilily Operating frequency allocation list Operating frequency range Operating radio frequency Operating radio frequency sub-range Operation and maintenance centre Operation frequency allocation step Operation state Operational system function (OSF) Operational system function block Operations, Administration, and Maintenance (OAM) Operations, Administration, and Maintenance(OAM) Flow Reference Architecture Operator's position for telegram indexing
Optimized Network Evolution Origin dependent routing (ODR) Originating call screening (OSC) Originating user prompter (OLJP) Orthogonal Frequency Division Multiplexing CDMA OSPF Outgoing information switching entity Out-of-band emission Out-of-band emission power Output radio transmitter power Outstanding number Overflow traffic Packet Packet Control Unit Packet switching Packet transfer mode Paging Paging channel (PCH) РАМ " RAN Parasitic radio emission Partial echo (PE) Partial retransmission control Passive Optical Network Passive radio signal retranslation Payload Payload Tvpe Indicator (PTI) Field PBX PC PCD PCI PCM PCM Expansion Bus PCN PCS PCS system PCU ' PDA Peak Cell Rate (PC R) Peak radio transmitter power РЕВ Perch channel Peripheral Component Interconnect Peripheral level measurement Permanent Virtual Circuit (PVC) Personal Communication Device Personal Communications Network Personal communications service (PSC) Personal Communications Services Personal Computer Personal Digital Assistant Personal Digital Cellular
Personal Handyphone System Personal Identification Number Personal identification number (PIN) Personal Information Manager Personal mobility Personal mobility management Personal number Personal numbering (PN) Personal registration Personal terminal Personal-Area Network Phase carrier modulation Phase carrier shift keying Phase detector Phase locked loop Phase-Shift Keying PHS Physical channel Physical circuit Phvsical deliver»' service Physical interface Physical Layer (PHY) Physical Layer Convergence Protocol (PLCP) Phvsical Medium-Dependent (PMD) Sublayer Pico cells PIM PIN Plain Old Telephone Service Plane polarized radio wave Plastic optical fiber (POP) Plesiochronous digital hierarchy (PDH) PLMN РОС Pocket-sized station Point-to-multipoint connection (PMP) Point-to-Point Protocol Point-to-Point Tunneling Protocol Polarization radio wave PON Port Portable station Position determination POTS PPP PPTP Predictive dialing Pre-FPLMTS Preview dialing PRI Primary Rate Interface Priority identifier Privacy
Privatе Branch Exchange Private Network-to-Network Interface (PNNI) Private nambering plane (PNP) Private service provider Private telecommunication network Processor Unit Program sound transmission service Progress indicator Propagation performance Protocol Protocol Data Unit (PDU) Protocol discriminator PSK PSTN PTN PU Public bureau Public Land Mobile Network Public land mobile network (PLMN) Public mobile satellite network Public Switched Telephone Network Public telecommunication network Public telegram transmission service Public Telephone Network Public telephone network (PST) Pulse Amplitude Modulation Pulse carrier modulation Pulse Code Modulation Pulse controlled selector Pulse radio transmitter Push-button dial Px64 QAM QoS QPSK Quadrature Amplitude Modulation Quadrature Phase-Shift Keying Quality of service (QoS) Quality of Service Classes Quality of service of telephone calls Quantum Flow Control (QFC) Quasielectronic exchance (entity) RAD Radio access Radio bearer connection (RBC) Radio circuit Radio emission Radio emission class Radio frequency am pi i tier Radio frequency channel Radio frequency range covered ratio Radio frequency signal
Radio frequency signal base Radio horizon Radio interface Radio interface protocol Radio interference Radio link Radio network Radio paging Radio port Radio port identifier Radio receiver Radio receiver bandpass Radio receiver blocking Radio receiver frequency selectivity performance Radio receiver intermodulation Radio receiver selectivity Radio receiver sensibility Radio receiver sensibility gain limited Radio receiver sensibility noise limited Radio reception Radio relav communication Radio relay hop Radio relay link Radio relay section Radio relay station Radio relav transmission svstem RTVC Radio resource Radio shadow area Radio signal retranslation Radio station Radio transmission Radio transmission control (RT) Radio transmitter Radio transmitter carrier power Radio transmitter power amplifier Radio wave polarization plane Radio waves Radio waves range Radiocommunication Radiocommunication facility Radiocommunication service Radiocommunication system Radiofrequencies Radio-frequency (RF) channel (RF) RADSL RAID Range antenna Rapid Application Development RAS Rate Adaptive Digital Subscriber Line Read-Only Memory Real Time Control Protocol
SDH SDSL SDT (Structured Data Transfer) Mode Secure Telephony Unit Security Security architecture Security feature Security management Security mechanism Security policy Security screening (SEC) Security service Segmentation and Reassembly (SAR) Sublayer Segmentation and Reassembly Protocol Data Unit (SAR-PDU) Sensor dial Separate drive selector Serial Line IP/Point-to-Point Protocol Serial-Bus Protocol Service access point (SAP) Service access point identifier (SAPI) Service accessibility performance Service area Service control point Service feature Service integrity performance Service link Service management Service operability Service primitive Service profile Service profile management (SPM) Service profile verification (SPV) Service provider Service retainability perfomance Service support performance Service-Specific Convergence Sublayer (SSCS) Serving GPRS Support Node Set of radio transmission technology SGSN Shared-service line circuit Short message Short message delivery Short message handling system Short message originator Short message recipient Short Message Service Short message submission Short message validity period Short mobile station identifier (SMSI) Side frequency Side frequency band Sidetone reduction telephone set
Signal Computing System Architecture Signal disassembly/assembly bits Signal spectrum width Signaling Signaling ATM adaptation layer (SAAL) Signalling information confidentiality Signalling System 7 SIM Simple and Efficient Adaptation Layer (SEAL) Simple Network Management Protocol Simplex radiocommunication Simultaneous Voice and Data Single cell signalling channel (SCCH) Single frequency simplex radiocommunication Single-side band earner companded radio transmission Single-side band radio transmission SLIP/PPP SLU Small office-Home office SMDS SMF SMS SNA SNMP Soft Permanent Virtual Circuit (SPVC) SoHo(SOHO) SONET Sound circuit SP Space channel Space radio station Space radiocommunication Space system Spaceswitching unit Speaker Identification API Speaker-independent voice recognition Speakerphone Special correspondence switchboard Speech API Speech card Speech concatenation Speech Recognition API Split chargin2(SPL) Spoken Language Understanding Spot beam Spurious emission power Spurious radio emission Spurious radio receiver reception channel SQL SRAPI SS7 Stage of selection
Standard Message Format State machine Static switching element Stationary radio station Steal flag Step-by-step selector STM Structured Query Language STU Subexchange Subscriber Identity Module Subscriber line Subscriber of communication :iietwork Subscriber telegraph service Subscriber's telephone line Subscriber's telephone meter Subscriber's telephone statioB Subscriber's terminal Sub-tone frequency Super high frequency Super synchronization word (SSW) Supplementary (optional) telecoxnmunication facility Supplementary service Susceptibility of a receiver Sustainable Cell Rate (SCR) SVAPI SVD Switch hook Switched telecommunication Ketwork Switched Virtual Circuit (SVC$ Switching device group Switching device of communication Switching device of communication switching field Switching device of communication switching group Switching element Switching entity Switching exchange complement Switching exchange of switching field Switching field line Switching of the communication switching field Switching stage Switching stage of switching afield Switching system Switching system connector Switching system multiple coordinate connector Switching unit Switching unit of switching held Symmetrical Digital Subscriber Line Symmetrical Multimegabit Data Services Synchronization burst Synchronous Digital Hierarchy ijSDH) Synchronous network node
Telephone answering and recording set Telephone answering machine Telephone answering set Telephone bell Telephone earphine capsule Telephone earphone Telephone exchange Telephone holding device Telephone network connecting line Telephone network signaling common channel Telephone network signalling system Telephone network trunk - record junction circuit Telephone network trunk connecting line Telephone radiocommunication Telephone Service Port Telephone set Telephone traffic Telephony over Passive Optical Network Telephony API Telephony Application Object Telephony Server Application Programming Interface Teleservice Teletex service Telex service Telnet Temporary mobile terminal identifier (TMTI) Terminal Terminal alerting Terminal alerting identifier Terminal data Terminal equipment (ТЕ) Terminal exchange Terminal identifier Terminal location integrity Terminal mobility Terminal mobility management Terminal radio relay station Terminal registration Terminal registration area Terminal registration area identifier Terminal roaming Terminating call screening (TCS) Terrestrial radiocommunication Terrestrial trunked radio Testing telegraph signal sender Testing text sender Tetra Text Interchange Format Text signal sender Text-to-speech conversion Third Generation TIF
Time alignment control Time dependent routing (TDK) Time Division Multiplexer Time Division Multiplexing Timedividine channel Time-Division Multiple Access Timeswitching unit TMN TMN management service TMN related Token Ring (Token-Ring) Token Ring Network Tone ringer TOM Total Access Communication Svstem TPON TPTP TR (T-R) Trace testing Trade mark Traffic capacity Traffic channel (TCH) Traffic Management (TM) Traffic Shaping Trailing Packet Discard (TPD) Transceiver Transfer mode Transit Transit international exchange Transmission channel Transmission circuit Transmission Control Protocol Transmission Control Protocol/Internet Protocol Transmission Convergence (TC) Sublayer Transmission line Transmission media Transmission network Transmission performance Transmission radio system Transmission system Transmitter power control Transport network Trivial File Transfer Protocol Troposphere Tropospheric scatter radio relay link Tropospheric scatter radiocommunication Trunk coin box set Trunk exchange Trunk incoming information switching entity Trunk telephone network TSAPI
Two-way radiocommunication Typical group link Typical physical circuit Typical transmission channel Typical transmission circuit U-ADSL UDP UDR UIM holder verification Ultra high frequency Ultra short waves UMTS Unacknowledged operation Unintended interference Un-interference radio system protectionability Un-interference radio system stability Universal access number (UAN) Universal Asymmetrical Digital Subscriber Line Universal mobile telecommunicatioms system (UMTS), Universal Mobile Telecommunication System Universal personal telecommunication (UPT) Universal personal telecommunications service Universal test and operations interface for ATM (Utopia) Unspecified Bit Rate Plus (UBR-) Unwanted emission Uplink (satellite) Uplink (terrestrial) UPT database UPT number UPT service provider authentication UPT Subscriber UPT user identity authentication Usage Parameter Control (UPC) User User Agent (UA) User Datagram Protocol User Datagram Protocol User event reports User identification User identity module (UIM) User location integrity User Network Interface (UNI) User of telecommunication service User packet channel (UPCH) User registration state User roam ing User-defined routing (UDR) User-to-user signalling (UUS) V V/IP VAD Validation (messages)
Validation (user/terminal) Value added service provider Value-Added Reseller
VAR
Variable Bit Rate (VBR) Variable CEPL VBScript VCEPL VCS VDSL Vector sum excited linear prediction (VSELP) Vehicle radio relay link Vehicle radio station Vehicle-mounted station Vertical polarized radio wave Very high frequency Very High-speed Digital Subscriber Line Verv low frequency Verv Small Aperture Terminal VFX VGA Video Graphics Array [Adapter] Videophone Videotex service Virtual Channel Virtual Channel Identifier(VCI) Virtual channel link (VCL) Virtual Channel Service Virtual channel connection (VCC) Virtual Circuit (VC) Virtual home environment (VHE) Virtual LAN Virtual Path Virtual Path Identifier (VP1) Virtual Private Network (VPN) Virtual source/virtual destination (VS/VD) Visitor location register (VLR) VLAN VoFR Voice Voice Activity Detection Voice bead, voice card Voice Fax Voice menu Voice frequency transmission channel Voice frequency transmission circuit Voice message Voice Operating System Voice over Frame Relay Voice over IP Voice Recognition Voice Responce Unit
Voice/IP VoIP VOS VOX control VPN VR VRU VSAT WAH WAN WAP Wavelenght Division Multilex WDM Wide .Area Network (WAN) Wide world communication network Wideband radio frequency signal Wideband radio interference Win32 API Windows NT Windows Open Services Architecture Windows Sockets API WinSock API Wireless access Wireless Application Protocol Wireless ATM (WATM) Wireless Local Loop Wireless mobility management Wireless PABX Wireless terminal Wireless-access mode Wireline access Wireline-access mode WLL Work station function (WSF) Work-at-Home World Wide Web WOSA WOSA Extensions for Real Time WOS A/Extensions for Financical Services WOSA/XFS WOSA/XRT WPABX WWW x2 x.121 x.25 x Digital Subscriber Line xDSL
