4.3 List of Abbreviations
T
TAFAS
Trunk Answer from Any Station
TEI
Terminal Endpoint Identifier
TRG
Trunk Group
TRS/Barring
Toll Restriction/Call Barring
U
UCD
Uniform Call Distribution
V
VM
Voice Mail
VoIP
Voice over Internet Protocol
VPN
Virtual Private Network
VPS
Voice Processing System
X
XDP
eXtra Device Port
368
Feature Guide