Term
Abbreviation
or Acronym
volts alternating currentVAC
variable bit rateVBR
variable bit rate, non–real timeVBR-NRT
variable bit rate, real timeVBR-RT
virtual circuit (or connection)VC
virtual channel connectionVCC
Voluntary Control Council for InterferenceVCCI
virtual circuit descriptorVCD
virtual channel identifierVCI
volts direct currentVDC
very-high-bit-rate digital subscriber lineVDSL
virtual local area networkVLAN
voice over Internet ProtocolVoIP
virtual output queue lengthVOQL
virtual pathVP
virtual path connectionVPC
virtual path identifierVPI
virtual private networkVPN
virtual routerVR
VPN routing and forwarding instanceVRF
virtual router identifierVRID
Virtual Router Redundancy ProtocolVRRP
vendor-specific attribute (RADIUS)VSA
virtual tributaryVT
VPN Tunnel ServerVTS
virtual terminalvty
W
wide area networkWAN
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Appendix A: Abbreviations and Acronyms