Installation Manual Part 2

Company Proprietary
Adaptive Broadband
U-NII Product Installation Manual 05/29/2001
11-2
Base Station
The Base Station is the part of the AB-Access
System that sends signals to and receives
signals from the Subscriber Units (SUs) to
enable communication with the WAN.
Baud
A measure of data transmission speed. The
baud rate denotes the number of symbols per
second.
Bit Error Rate
The Bit Error Rate (BER) is the fraction of
transmitted bits that are received in error.
Cell
A 53-Byte packet of data used in ATM
networks. Also used to refer to the coverage
area of one Base Station.
Constant Bit Rate
(CBR)
Service that operates on a connection basis
and offers consistent delay predictability; used
for applications such as circuit emulation,
voice, and video.
Control Server
The Control Server (typically one per BS) is a
computer responsible for management of the
BS, its APs, and the associated SUs.
DS1
A data transmission rate of 1.544 Mbps, also
referred to as a T-1.
DS3
A data transmission rate of 45 Mbps
Element Management
System
The Element Management System (EMS),
located on a workstation at an appropriate
point in the network, allows you to configure,
control, and monitor all components of the
AB-Access System.
MIB
Management information base allows external
management system access.
Multiplexer
A multiplexer is device or system capable of
combining elementary streams into one
aggregate transport stream.
Network
A network is an interconnection of computer
systems, terminals, or data communications
facilities.
OC3
A data transmission rate of 155 Mbps
Packet
A packet is a sequence of data, with
associated control information, that is
switched and transmitted as a whole.
Packet Switching
Packet switching is the data transmission
method that divides messages into standard-
sized packets for greater efficiency of routing
and transport through a network.
Parsing
Parsing is the process of analyzing a data
stream and breaking it down into more easily
processed components.