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DSL Acronyms

ADSL

Asymmetric Digital Subscriber 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 Gauge

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 and Telephone

CLEC

Competitive Local Exchange Carrier

CO C

entral Office

CODEC

Coder/Decoder

CPE

Customer Premise (or Provided) Equipment

CSU

Channel Service Unit

DCE

Data Communication (or Circuit-Terminating) Equipment

DHCP

Dynamic Host Configuration Protocol

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 Terminal (or Termination) Equipment

EMI

Electromagnetic 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 I

nternet Protocol

ISDL

ISDN Digital Subscriber Line

ISDN

Intergrated Services Digital Network

ISO

International Organization for Standards

ISP

Internet Service Provider

ITU

International Telecommunications Union

IXC

Inter-exchange Carrier

Kb/s

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

Mb/s

Megabits Per Second

MDF

Main Distribution Frame

MUX

Multiplexer

MVL

Multiple Virtual Line

NAP

Network Access Provider

NAT

Network Address Translation

NEBS

Network Equipment Building Standards

NEXT

Near-end Crosstalk

NIC

Network Interface Card

NID

Network Interface Device

OPTIS

Overlapped Phase Trellis-coded Interlocking Spectrum

PBX

Public Branch Exchange

PCM

Pulse Code Modulation

POP

Point of Presence

POTS

Plain Old Telephone Service

PPP

Point to Point Protocol

PRI

Primary Rate Interface

PSTN

Public Switched Telephone Network

PTT

Postal, Telegraph and Telephone

PVC

Permanant Virtual 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 Protocol

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


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