Installation and Operation Manual

November 1999
M68333 Rev. A Tel-Link PMP - Sector Terminal Installation & Maintenance Manual Gloss-1
Glossary
NAME DESCRIPTION
AAL ATM Adaption Layer - A collection of standardized protocols providing
services to higher layers by adapting user traffic to a cell format.
AAU Antenna Alignment Unit
Active Window The window whose Title Bar is highlighted. Active windows lie in front
of all windows that intersect them in three dimensional space
AGC Automatic Gain Control
AIS Alarm Indicator Status - One of the Operations and Maintenance func-
tion types used for fault management.
AMI Alternate Mark Inversion - A type of bipolar line signaling used by DS-1
and DS-3 interfaces.
ANSI American National Standards Institute. A US technology standards
organization.
AMSL Above Mean Sea Level
ASIC Application Specific Integrated Circuit
ATM Asynchronous Transfer Mode - A broadband switching and multiplex-
ing, connection-oriented, high-performance and cost effective inte-
grated technology.
B8ZS Bipolar with Eight Zero Substitution - A line code substituting 8 zeros
with Bipolar Violations for bit synchronization purposes.
Base Station The center of a cell where Sector Terminal(s) are installed.
BER Bit Error Rate - A measure of the rate of bit errors in a digital system.
BNC Bayonet Nut Connector
BOD Bandwidth-On-Demand - A technique allocating more bandwidth to
users requiring it and reduces bandwidth to users that do not.
BPV Bipolar Violation - DS-1 and DS-3 line fault alarms.
BRI Basic Rate Interface - A ISDN service specification that provides two
64-Kbps B-channels and one 16-Kbps D-channel.
Calibration File A file used by the LSM to calibrate a particular model of ODU
CAS Channel Associated Signaling
CBR Constant Bit Rate - One of five service classes for the ATM layer. This
service type allows a user to define a specific cell delay, cell delay vari-
ation, and reserve a specific constant fixed bandwidth on the network.
CCITT Consultative Committee on International Telegraphy and Telephony.