V5.1 

Interface between exchange and access network conforming to ETS 300 324

V5.2 

Interface between exchange and access network conforming to ETS 300 347

VA 

Voice Activity

VAD/DTX/CNG 

Voice Activity Detector/Discontinous Transmission/Comfort Noise Generation

VANG 

Verbal Announcement Generator

VAS 

Value Added Service

VAT 

Value Added Tax

VBR 

Variable Bit Rate

VC 

Virtual Channel

VCC 

Virtual Channel Connection

VCI 

Virtual Channel Identifier

VCL 

Virtual Channel Link

VC-n 

Virtual Container n

VD 

Virtual Destination

VDSL 

Very high bit rate Data Subscriber Line

VF 

Voice Frequency

VF 

Variance Factor

VHE 

Virtual Home Environment

VIG 

Video Gateway

VIP 

Very Important Person

VLAN 

Virtual Local Area Network

VLR 

Visitor Location Register

VML 

Vector Markup Language

VMS 

Voice Mail System

VOD 

Video On Demand

VOlP 

Voice Over Internet Protocol

VOP 

Voice Over Packet

VP 

Virtual Path

VPC 

Virtual Path Connection

VPI 

Virtual Path Identifier

VPLMN 

Visited Public Land Mobile Network

VPN 

Virtual Private Network

VRML 

Virtual reality Modeling Language

VRU 

Voice Response Unit

VS/VD 

Virtual Source/ Virtual Destination

VTOA 

Voice and Telephony Over ATM