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GLOSSARY
Acme Packet 1100 Hardware Installation Guide 59
UC — Unified Communications
UPS — Uninterruptible Power Supply is a power supply that can run off of a backup
batte
ry when primary power is lost.
UDP — User Datagram Protocol provides a simple, but unreliable me
ssage service
for transaction-oriented services. Each UDP header carries both a source port
identifier and a destination port identifier, allowing high-level protocols to target
specific applications and services among hosts.
USB — Universal Serial Bus
VLAN — Virtual Local Area Network refers
to a network of computers are
connected to a single physical segment of a wire but behave as if they are connected
to the physically diverse LANs.
VAC — Volts Alternating Current
VCCI — Voluntary Control Cou
ncil for Information Technology Equipment (Japan)
WAN — Wide Area Network is a computer network that
spans a relatively large
geographical area. Typically, a WAN consists of two or more LANs.
WEEE — the directive by the Eu
ropean Parliament and the Council of the European
Union 2002/96/EC concerning waste electrical and electronic equipment (WEEE).
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