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Glossary and Abbreviations
555-230-024GL-50 Issue 5 January 1998
V
VAR
Value-added reseller
VDN
See vector directory number (VDN).
vector directory number (VDN)
An extension that provides access to the Vectoring feature on the switch. Vectoring allows a
customer to specify the treatment of incoming calls based on the dialed number.
vector-controlled split
A hunt group or ACD split administered with the vector field enabled. Access to such a split is
possible only by dialing a VDN extension.
VIS
Voice Information System
VLSI
Very-large-scale integration
VM
Voltmeter
VNI
Virtual nodepoint identifier
voice terminal
A single-line or multiappearance telephone.
W
WATS
See Wide Area Telecommunications Service (WATS).
WCC
World-Class Core
WCR
World-Class Routing
WCTD
World-Class Tone Detection
WFB
Wireless fixed base
Wide Area Telecommunications Service (WATS)
A service in the United States that allows calls to certain areas for a flat-rate charge based on
expected usage.