Installation Manual Part 2

Company Proprietary
Adaptive Broadband
U-NII Product Installation Manual 05/29/2001
11-1
11 Glossary & Acronyms
TERM DEFINED
Access Point
An Access Point (AP) is a component of a
Base Station (BS) that contains the antenna
used to communicate with a Subscriber Unit
(SU).
Anchor Switch
The Anchor Switch (AS) is an ATM access
switch that is a component of a Base Station
(BS).
Antenna
A device for transmitting and/or receiving
radio waves.
Asynchronous
A data transmission method in which data
may be sent at irregular intervals (without
reference to clock signals).
ATM
Asynchronous Transfer Mode is a high-
performance, cell-oriented switching and
multiplexing technology, which utilizes fixed-
length packets to carry different types of
traffic. It integrates the multiplexing and
switching functions, is well suited for bursty
traffic, and allows communications between
devices that operate at different speeds.
ATM Switch
The ATM switch provides layer 2 switching of
ATM cells through virtual circuits. An ATM
switch is contained in the SU, the AP, and the
AS.
Available Bit Rate
(ABR)
Service that provides rate-based flow control
and is aimed at data traffic such as file
transfer and e-mail.
Azimuth
The angle along the horizon usually
referenced to north.
Bandwidth
The data carrying capacity of a
communications channel, measured in Hertz
as the difference between the highest and
lowest frequencies of the channel.
SECTION 11
Glossary