Reference Manual

Glossary
GSM 900 GSM system 900 MHz (generic)
GSM 1800 (GSM-based) Digital communication
system 1800 MHz (generic)
GSM 1900 (GSM-based) Digital communication
system 1900 MHz (generic)
HCE HDSL Central Equipment
HCOMB Hybrid COMBiner
HDLC High level Data Link Control
HDSL High bit rate Digital Subscriber Line
Heat Exchanger A version of the climate unit
HEU Heat Exchanger Unit
HISC Highway Splitter Combiner
HLIN High Level IN
HLOUT High Level OUT
HMS Heat Management System
Hum Humidity
HW HardWare
HWU HardWare Unit
An HWU consists of one or more SEs. An
HWU is a functional unit within the RBS.
The HWU is either active (equipped with a
processor) or passive (without processor).
I1A Internal Fault Map Class 1A
I1B Internal Fault Map Class 1B
I2A Internal Fault Map Class 2A
IA Immediate Assignment
IC Integrated Circuit
ID IDentification
IDB Installation Data Base
IDM Internal Distribution Module
IEC International Electric Commission
IF Box Interface Box
476 (485)
EN/LZT 720 0008 P2A
2001-11-28
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Preliminary