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The A - Z of Telephone Accronyms

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V
VA Volt-Ampere
VAC Voltage - Alternating Current
VAD Voice Activity Detector
VAN valueadded networks
VAN Value Added Network(s)
VAR Video to Audio Carrier Ratio
VBI Vertical Blanking Interval
VBIC Vertical Blanking Interval Code
VBR Variable Bit Rate
VBW Video Band-Width
VC Virtual Circuit
VCA Voltage Controlled Amplifier
VCC Virtual Channel Connection
VCC Virtual Circuit Connection
VCF Voltage Controlled Filter
VCI Virtual Channel Identifier
VCO Voltage Controlled Oscillator
VCR Video Cassette Recorder
VCS Voice Controlled Services
VDP Video Disk Player
VDR Video Disk Recorder
VDT Video Dial Tone
VDT Video Display Terminal
VDTA Video Dial Tone Association
VESA Video Electronics Standards Association
VF Video Frequency
VGE Voluntary Group of Experts (of the ITU)
VHF Very High Frequency
VHS Video Home System (a video cassette
recording format)
VIA Videotex Industry Association (now ISA)
VIMCAS Vertical Interval Multi-channel Audio System
VIRS Vertical Interval Reference Signal
VITA Volunteers in Technical Assistant
VITC Vertical Interval Time Code
VITS Vertical Interval Television Signal
VJB Video Juke Box
VLAN Virtual Local Area Network
VLBI Very Long Baseline Interferometry
VLF Very Low Frequency (3 kHz to 30 kHz band)
VLN Very Low Noise
VLR Visitor Location Register
VNR Video News Release
VOA Voice of America
VOD Video on Demand (TV program access)
VOM Volt-Ohm Meter (used in electronic service work)
VP Voice Privacy
VPN Virtual Private Network
VPR Video Production Recording
VPS Viewers per Set
VPVH Viewers per Viewing Household
VRI Video Relay Interpreting
VRML Virtual Reality Modeling Language
(WWW document language)
VRML Virtual Reality Modeling Language Consortium
VRP Vertical Radiation Pattern (antenna)
VSAT Very Small Aperture Terminal
VSB Vestigial Sideband (used in TV transmissions)
VSC Vertical Service Code
VSDA Video Software Dealers Association
VSELP Vector Sum Exited Linear Predictive coding
VSP Video Signal Procesor/Processing
VSWR Voltage Standing Wave Ratio
VTR Video Tape Recorder
VTVM Vacuum Tube Volt Meter (used in electronic
service work)
VU Volume Unit (measurement of program
audio signal level)

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