ADSL Asymmetric DSL

CESoP Circuit Emulation Services

over Packet

CPE Customer Premises Equip- ment

DSL Digital Subscriber Line

DSLAM DSL Access Multiplexer

GSM Global System for Mobile

Communications

ISDN Integrated Services Digital Network

MSAN Multi-Service Access Node

NGN Next Generation Network

OAM Operations, Administration

and Maintenance

PBX Private Branch Exchange

POTS Plain Old Telephone Service

PRA Primary Rate Access

RTP Real-Time Transport Protocol

SDH Synchronous Digital Hierarchy

SHDSL Single-Pair High-Speed DSL

SIP Session Initiation Protocol

TDM Time Division Multiplexing

VDSL Very High-Speed DSL

VoDSL Voice over DSL

VoIP Voice over IP