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Glossary

ADM
add/drop multiplexer

ATM
asynchronous transfer mode

BGP
border gateway protocol

CLEC
competitive local exchange carrier

CMIP
common management information protocol

CO
central office

CORBA
common object request broker architecture

CPE
customer premises equipment

DCS
digital cross-connect system

DS
digital signal

DSL
digital subscriber line

DWDM
dense wavelength division multiplexing

e-commerce
electronic commerce

GigE
Gigabit Ethernet

IAD
integrated access device

ILEC
incumbent local exchange carrier

IP
Internet protocol

ISDN
integrated services digital network

ISP
Internet service provider

LAN
local area network

MPLS
multiprotocol labeling system

OC
optical carrier

ONU
optical networking unit

OSPF
open shortest path first

OSS
operations support system

PON
passive optical network

PoP
point of presence

QoS
quality of service

RIP
routing information protocol

ROI
return on investment

SDH
synchronous digital hierarchy

SLA
service-level agreement

SNMP
signaling network management protocol

SONET
synchronous optical network

TDM
time division multiplexed

VP ATM
virtual path ATM

VPN
virtual private network

WDM
wavelength division multiplexing

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