ADSL - Asymmetric Digital Subsriber Line ANSI - American National Standards Institute ATM - Asynchronous Transfer Mode ATU-C - Adsl Termination Unit - Central Office
ATU-R - ADSL Termination Unit - Remote AWG - American Wire Guage BERT - Bit Error Rate Test bps - Bits per Second BRI - Basic Rate Interface CAP - Carrierless Amplitude and Phase
CATV - Cable TV CBR - Constant Bit Rate CCITT - Consultative Committee For International Telegraph CLEC - Competitive Local Exchange Carrier CO - Central Office CODEC - Coder/Decoder
CPE - Customer Premise (or Provided) Equipment CSU - Channel Service Unit DCE - Data Communication ( or Circuit-Terminating) Equipment DLC - Digital Loop Carrier DMT - Discrete Multi-tone
DSL - Digital Subscriber Line DSLAM - Digital Subscriber Line Access Multiplexer DSP - Digital Signal Processor DSU - Data Service Unit DTE - Data Termainal (or Termination) Equipment
EMI - Electromagnet Induction ETSI - European Telecommunications Standards Institute FCC - Federal Communications Commission FDM - Frequency Division Multiplexing FEXT - Far-end Crosstalk
FTTC - Fiber To The Curb FTTH - Fiber To The Home HDSL - High bit-rate Digital Subscriber Line HFC - Hybrid Fiber-Coax IEC - Inter-Exchange Carrier
IEEE - Institute of Electrical and Electronics Engineers IETF - Internet Engineering Task Force ILEC - Incumbent Local Exchange Carrier IP - Internet Protocol ISDL - ISDN Digital Subscriber Line
ISDN - Intergrated Services Digital Network ISO - International Organization for Standards ISP - Interent Service Provider ITU - International Telecommunications Union IXC - Inter-exchange Carrier
Kbps - Kilobits Per Second LADC - Local Area Data Circuit LADS - Local Area Data Service LAN - Local Area Network LATA - Local Access and Transport Area LEC - Local Exchange Carrier
Mbps - Megabits Per Second MDF - Main Distribution Frame MUX - Multiplexer MVL - Multiple Virtual Line NAP - Network Access Provider NEBS - Network Equipment Building Standards
NEXT - Near-end Crosstalk NIC - Network Interface Card NID - Network Interface Device PBX - Public Branch Exchange PCM - Pulse Code Mondulation POP - Point of Presence
POTS - Plain Old Telephone Service PPP - Point to Point Presence PRI - Primary Rate Interface PSTN - Public Switched Telephone Network PTT - Postal, Telegraph and Telephone
PVC - Permanent Virutal Circuit QAM - Quadrature Amplitude Modulation QoS - Quality of Service RADSL - Rate Adaptive Digital Subscriber Line RBOC - Regional Bell Operating Company
SDSL - Symmetric Digital Subscriber Line SNR - Signal-to-Noise Ratio SOHO - Small Office/ Home Office SVC - Switched Virtual Circuit TCP - Transport Control Protocal TELCO - Telephone Company
TDM - Time Division Multiplexing UBR - Unspecified Bit Rate UDSL - Unidirectional Digital Subscriber Line UTP - Unshielded Twisted Pair VBR - Variable Bit Rate
VDSL - Very High Bit Rate Digital Subscriber Line VoIP - Voice over Internet Protocol VPN - Virtual Private Network WAN - Wide Area Network xDSL - (generic) Digital Subscriber Line
