Glossary:

ATIS Telecom Glossary

Search Keyword By: V

Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

volume

A portion of data, with its physical storage medium, that can be handled conveniently as a unit.
Note: An example of a volume is a "floppy" diskette.

volume unit (vu)

A unit of measurement of the power of an audio-frequency signal, as measured by a vu meter.
Note 1: The vu meter is built and used in accordance with American National Standard C16.5-194
2.
Note 2: When using the vu meter to measure sine wave test tone power, 0 vu equals 0 dBm.

vox

An acoustoelectric transducer and a keying relay connected so that the keying relay is actuated when sound, or voice, energy above a certain threshold is sensed by the transducer.
Note: A vox is used to eliminate the need for push-to-talk operation of a transmitter by using voice energy to turn on the transmitter. Synonyms voice operated relay circuit, voice operated… (Read More →)

VPC

VoIP Positioning Center

VPIM

Voice Profile for Internet Mail

VPLS

Virtual Private LAN Service

VPN

Virtual Private Network

VRF

Virtual Routing and Forwarding

VSB

Abbreviation for vestigial sideband. See vestigial sideband transmission.

VSO

Virtual Service Operations

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