User Manual

RBS 2000 Glossary
1 Introduction
This glossary lists abbreviations and acronyms used in texts dealing with RBS
2000 cabinets. Some basic terms and acronyms needed for cross-reference
are included in the list.
An arrow  is used to indicate a reference to another entry in the list.
Where there are several meanings for the same term and the terms are cabinet
size dependent, this is indicated using Macro and Micro where applicable..
2 Terms and Abbreviations
1–P
One-Pair connection with echo cancellation (= two
wires)
2–P Two-Pair connection with echo cancellation (= four
wires)
AAU Active Antenna Unit
Abis
GSM interface standard defining attributes of the
communication between the BSC and the BTS.
AC
Alternating Current
ACB
Alarm Collection Board
ACCU
Alternating Current Connection Unit
ACCU-CU
ACCU Connection Unit
ACCU-DU
ACCU Distribution Unit
A/D converter
Analog to Digital converter
ADM Auxiliary Distribution Module
AFS
AMR Full-rate speech
AGW
Abis Gateway
AHR
AMR Half-rate speech
Air conditioner One version of the climate unit (Active cooler)
AIS
Alarm Indication Signal
ALBO
Automatic Line Build Out
3 (22)
EN/LZT 720 0283 Uen R2A