UPS
Uninterruptible Power Supply is a power supply that can run off of a backup battery
when primary power is lost.
UDP
User Datagram Protocol provides a simple, but unreliable message 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.
VFD
Vacuum Fluorescent Display is used on the graphic display window of the Acme
Packet 6300 System chassis’s front control panel.
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
VDC
Volts Direct Current
VCCI
Voluntary Control Council 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 European Parliament and the Council of the European Union
2002/96/EC concerning waste electrical and electronic equipment (WEEE).
Chapter 8
8-4