API
application programming interface
ATM
asynchronous transfer mode
CALEA
Communications Assistance for Law Enforcement Act
CLASS
custom local-area signaling services
CO
central office
DSL
digital subscriber line
DSLAM
digital subscriber line access multiplexer
IAD
integrated access device
IETF
Internet Engineering Task Force
ILEC
incumbent local-exchange carrier
IP
Internet protocol
IPDC
Internet protocol device control
ISDN
integrated services digital network
ISUP
integrated services digital network user part
ITU
International Telecommunications Union
IVR
interactive voice response
MCU
multipoint control units
MEGACO
media gateway controller
MGCP
media gateway control protocol
NEBS
network equipment building standards
PBX
private branch exchange
PC
personal computer
PDA
personal digital assistant
POTS
plain old telephone service
PSTN
public switched telephone network
SCE
service creation environment
SCGP
simple gateway control protocol
SIP
session initiation protocol
SS7
signaling system 7
TCAP
transactional capabilities application part
TDM
time division multiplexing
VoDSL
voice over digital subscriber line
VoIP
voice over Internet protocol


