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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Glossary and Abbreviations
GL-6
Subnet Trunking
A feature permitting the manipulation of digits on outgoing AAR and ARS calls, based on the
selected routing preference.
selected routing preference.
SVC
Switched Virtual Connection—a virtual link established through an ATM network; the basic building
block of port network interconnectivity. Two SVCs, one in each direction, are required for a
bi-directional talk path between two port networks in ATM-PNC configurations.
block of port network interconnectivity. Two SVCs, one in each direction, are required for a
bi-directional talk path between two port networks in ATM-PNC configurations.
T
TAC
Trunk access code
TDM
Time-division multiplexing
TTR
Touch-tone receiver
U
UID
Call redirection
V
VC
Virtual circuit
VCI
Virtual channel identifier—a unique, numeric tag (16-bit field in cell header) that identifies every
virtual channel across an ATM network
virtual channel across an ATM network
VDN
Vector directory number
Virtual Path Identifier (VPI)
The 8-bit field in the cell header that indicates the virtual path over which a cell is routed.
W
WAN
Wide-area network