User's Manual Part 4

RBS 2308 and RBS 2309 User’s Guide
12 Glossary
This glossary lists terms and abbreviations used in documentation for RBS 2000
cabinets. It includes some terms and abreviations needed for cross-reference
purposes.
Terms and Abbreviations
An arrow ⇒ is used to indicate a reference to another entry in the list.
1-P
One-pair connection with echo cancellation (= two
wires).
2-P
Two-pair connection with echo cancellation (= four
wires).
2WRD 2-Way Receiver Diversity
4WRD 4-Way Receiver Diversity
A/D
Analog-to-Digital
AAU Active Antenna Unit
Abis
GSM interface standard defining attributes of the
communication between the BSC and BTS.
AC Alternating Current
ACB Alarm Collection Board
ACCU AC Connection Unit
ACCU-CU ACCU Connection Unit
ACCU-DU ACCU Distribution Unit
ADM Auxiliary Distribution Module
AFS AMR Full-Rate Speech
AGCH Access Grant Channel
AGW Abis Gateway
AHR
AMR Half-Rate Speech
air conditioner
Version of the climate unit (active cooler).
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EN
/LZT 720 0027 Uen R8A 2006-06-27