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56 kbps 56k line5ESS Switch610 A&BACK ACM acoustic coupler adaptive answering Adaptive Communication Environment Adaptive Digital Pulse Code Modulation addressed call mode addresseeAM amateur packet radio America On-Line, Inc. Amplitude Modulation asymmetrical modulation Asymmetric Digital Subscriber Line asynchronous Asynchronous Communications Interface Adapter Asynchronous Transfer Mode ATM attenuation audiographic teleconferencing automatic baud rate detection Automatic Number Identification Automatic Repeat Request bandwidthbang path Basic Rate Interface baudBaudot codebeamer bearer channelBER bipolarBit Error Ratebit ratebits per second Bose-Chaudhuri-Hocquenghem Code broadband broadcast quality video broken arrow bulletin board system cable modem callbackCall UnixCAP capacity Carrierless Amplitude/Phase Modulation carrier signalCCS Cellular Digital Packet Data central office Central office exchange service channel service unit channel service unit/data service unit checksumCHEOPS circuit circuit switching Clover Code Division Multiple Access coder/decoder common carrier Common Intermediate Format communications port communications software communication system Computer Telephone Integration concentrator Conferencing over IP continuous wave cost control callback CTICTS cuCU-SeeMe Customer Information Control System cutoverdata channel Data Communication Equipment Data Over Cable Service Interface Specification Dataphone Digital Service data rate data service unit Data Terminal Equipment Data Terminal Ready data transfer rate dedicated line Delphi demodulation Dialled Number Identification Service digital carrier digital certificate Digital Data Service Digital Enhanced Cordless Telecommunications Digital Radio Mondiale Digital Simultaneous Voice and Data Digital Subscriber Line Digital Switched Network diplex Direct Inward Dialing directional coupler double-duplexDPSK DS0DS1 DS1CDS2 DS3DSL DS levelDSU Dual Tone Multi Frequency duplexE1 E2E3 E4E5 E-carrier system EggdropEIA-232 EIA-232CEIA-422 EIA-423EIA-449 EIA-485EIA-530 electronic commerce electronic data interchange electronic funds transfer facsimilefall backfall forwardFax over IP Fibre Channel flow controlFM FPLMTSFRAD Frame Check Sequence Frame Relay Frame Relay Access Device frequency division multiplexing Frequency Modulation Frequency Shift Keying full-duplex General Packet Radio Service Global Positioning System Global System for Mobile Communications go voiceH.323 half-duplex hardware handshaking Hayes-compatible hello packet High bit-rate Digital Subscriber Line High Speed Circuit Switched Data High-speed Net Connect high speed serial interface Home Phoneline Networking Alliance hostin-band information superhighway Integrated Services Digital Network Intelsat Interactive Voice Response inter-exchange carrier intermodulation distortion Internet backbone Internet Telephony Service Providers IP Telephony isochronousKermit latencyleased line line conditioning line noise Link State Routing Protocol local echo local exchange carrier local loop longitudinal parity Longitudinal Redundancy Check low earth orbit Manchester encoding marshalling Media Gateway Control Protocol Message Passing Interface Microsoft Access modemMorse code Multimedia Integrated Conferencing for European Researchers multiplexing Multi-User Shared Hallucination negative acknowledgement noisenoise shapingnull modem Nyquist Theorem Open Telecom Platform optical fibreOTP out-of-band overhead packet radio packet switching pagerparity parity bit parity errorPCN PC-TALK III Personal Communication Services phacker Phonetastic Physical Transport Network Plain Old Telephone Service plesiochronous Plesiochronous Digital Hierarchy Point-to-Point Protocol Point-to-Point Protocol over Ethernet Point-to-Point Tunneling Protocol Portable AIRTIME Post, Telephone and Telegraph administration Pretty Amazing New Stuff Private Automatic Branch eXchange Private Branch Exchange Private Manual Branch eXchange Procomm protocol analyser PSDNPSK Public Key Infrastructure Public Switched Telephone Network pushquadruplex quality of serviceRAS RealAudio recipient redundancy reliable communication Remote Access Services remote echo Remote Spooling Communication Subsystem repeater Return To ZeroRJ-11 root bridge RS-232DRSCS screen poppingSDLC Serial Line Internet Protocol Serial Peripheral Interface serial port service provider set-top box signalling rate signal-to-noise ratio Simple Gateway Control Protocol simple multicast protocol simplex simplex printer Simplified Multicast Routing Protocol single-duplex Single-line Digital Subscriber Line SNR bandwidth product software handshaking spread spectrum communications squirt the bird stac compression statistical time division multiplexing streamstreaming synchronous Synchronous Data Link Control Synchronous Digital Hierarchy T1T3 tail circuit T-carrier systemTEI telco Telecommunications Device for the Deaf Telephone Application Program Interface telephony Telephony Application Programming Interface Telephony User Interface Telocator Alphanumeric Protocol terminal emulator throughput time division multiplexing TUI two-binary, one-quaternary Universal Asynchronous Receiver/Transmitter Universal Communications X Upper Side-Band modulation USB USB Adapter Card Support User Network Interface uuencodeV.10 V.11V.25 V.25 bisV.28 V.29V.32 V.32bisV.35 V.42V.42bis Vertical Redundancy Check Very high bit-rate Digital Subscriber Line Very Small Aperture Terminal V.FC video conferencing video dial tone Video on Demand visible bell vocoder Voice over IPVSAT V series wavelength division multiplexing Wide Area Telecommunications Service wikiX.21 XMODEM
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