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Digital Subscriber Line (DSL) Testing

Glossary

API
application programming interface

ATM
asynchronous transfer mode

ATU–C
ADSL transmission unit–CO

ATU–R
ADSL transmission unit–remote

CLEC
competitive local-exchange carrier

DSL
digital subscriber line [also xDSL]

DSLAM
digital subscriber line access multiplexer

EMS
element management system

ILEC
incumbent local-exchange carrier

IP
Internet protocol

LMS
loop management system

MDF
main distribution frame

NMS
network management system

NOC
network operations center

OSS
operations support system

POTS
plain old telephone service

SLA
service-level agreement

SNMP
simple network management protocol

TDR
time domain reflectometry

XML
extensible markup language

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