Manual Part 7

RBS 2000 Glossary
ID IDentification
IDB
Installation DataBase
IDM Internal Distribution Module
IEC
International Electric Commission
IF Box Interface Box
IMSI
International Mobile Subscriber Identity
INIT Initial
INT
Internal
IOG
Input/Output Group
IOM
Internal Operation and Maintenance bus
IR InfraRed
IS
Interface Switch
IWD InterWork Description
JTC
Joint Technical Committee
LAN
Local Area Network
LAPD Link Access Procedures on D-channel
LAPD is the data link layer (layer 2) protocol used for
communication between the BSC and the BTS on the
Abis interface.
Abis layer 2 is sometimes used synonymously with
LAPD.
LBO
Line Build Out
LED
Light Emitting Diode
LLB Line Loop Back
LNA
Low Noise Amplifier
Local bus The local bus offers communication between a central
main RU (DXU) and distributed main RUs (TRU and
ECU).
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EN/LZT 720 0283 Uen R1B