Installation Manual Part 2

Company Proprietary
Adaptive Broadband
U-NII Product Installation Manual 05/29/2001
11-4
deference to data using other classes of
service.
Uninterruptible
Power Supply
An optional BS element used to provide
power in the event of an AC power failure.
Variable Bit Rate-
Real Time (VBR-RT)
Service that operates on a connection basis
and offers very low delay variance but
requires access to a variable amount of
network bandwidth; used for such applications
as packet video and voice.
Variable Bit Rate-
Non-Real Time (VBR-
NRT)
Service that operates on both a connection
and connectionless basis and allows delay
variance between the delivery of cells; used
for data applications which have potentially
bursty traffic characteristics, including LAN
interconnect, CAD/CAM, and multimedia.
Virtual Circuit
A logical connection, not a physical
connection, provides multiple connections that
can be defined simultaneously across a single
network facility, with each connection having
flexible bandwidth.