Manual Part 7

RBS 2000 Glossary
AU Antenna Unit
GSM 900 = CEU + Passive Antenna
GSM 1800/1900 = AAU
BALUN BALance and UNbalance transformer
Batt Battery
BB
Battery Box
BBS
Battery Back-up System
BCCH
Broadcast Control CHannel
Downlink only broadcast channel for broadcast of
general information at a base station, on a base station
basis.
BCS
Block Check Sequence
BDM Battery Distribution Module
The BDM is an IDM with a battery and a local processor.
BER
Bit Error Rate
BFF
Bit Fault Freq
uency
BFI Bad Frame Indication
BFU Battery Fuse Unit
Bias injector A unit which injects DC power into the coaxial cable
to feed the TMA. Isolates the DC power from the RF
signal fed to the CDU.
Bm
Denotes a full-rate traffic channel
BPC
Basic Physical Channel
Denotes the air interface transport vehicle formed
by repetition of one time slot on one or more radio
frequency channels.
BS
Base Station
BSC
Base Station Controller
GSM network node for control of one or more BTSs.
5 (24)
EN/LZT 720 0283 Uen R1B