PDF of this tutorialATM
asynchronous transfer mode
CBR
constant bit rate
CLEC
competitive local exchange carrier
CO
central office
DACS
digital access cross-connect system
DS
digital signal
DSLAM
digital subscriber line access multiplexer
ILEC
incumbent local exchange carrier
IP
Internet protocol
ISDN
integrated services digital network
ISP
Internet service provider
IXC
interexchange carrier
LATA
local access and transport area
OSS
operations support system
PRI
primary rate interface
PSTN
public switched telephone network
QoS
quality of service
RBOC
regional Bell operating company
SNMP
simple network management protocol
SS7
signaling system 7
TDM
time division multiplex
TMN
telecommunications management network
