A-4 List of terms
PVC
polyvinylcholoride
RAG
Ring again
RLB
remote loopback
Rls
release
ROM
read-only memory
SCL
Speed Call Long
SCS
Speed Call Short
SCU
Speed Call User
TADO
Touch Asynchronous Data Option
TCM
time compression multiplex
TRKDISP
Trunk Member Display
XALC
extended analog line card
XDLC
extended digital line card
XMLC
extended message waiting line card
XPEC
extended peripheral equipment controller
XPM
XSM–based peripheral module
555-4001-110 Standard 09.03 July, 2002