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.

VSP

Video Service Provider

VSWR

Abbreviation for voltage standing wave ratio.

VTU-I

VDSL Transmission Unit, Intermediate

VTU-O

VDSL2 Transceiver Unit at the Optical Network Unit

VTU-R

1. VDSL2 Transceiver Unit at the Remote Site,
2. VDSL Transmission Unit, Remove.

vu

Abbreviation for volume unit.

vulnerability

1. In communications security, see susceptibility.
2. The extent to which a system will degrade when subjected to a specified set of environmental conditions.
3. In communications interference, see susceptibility threshold.
4. In cryptology, the point of weakness within the encrypted system where threats can occur, such as equipment, facilities, hardware, software, operating systems and personnel. [After X9.49]
5. [A]… (Read More →)

vulnerability assessment

1. The systematic examination of a system to identify those critical infrastructures or related components that may be at risk from an attack and the determination of appropriate procedures that can be implemented to reduce that risk.
2. [The] systematic examination of an information system (IS) or product to determine the adequacy of security measures. identify security deficiencies, provide data… (Read More →)

VW-1

Flammability rating established by Underwriters Laboratories for wires and cables that pass a specially designed vertical flame test formerly designated FR-1.

VXML

Voice Extensible Markup Language

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