User's Manual Part 3

RBS 2109 User’s Guide
I1B
Internal Fault Map Class 1B
I2A
Internal Fault Map Class 2A
IA Immediate Assignment
IC
Integrated Circuit
ICMI
Initial Codec Mode Indicator
ID
Identity
IDB
Installation DataBase
IDM
Internal Distribution Module
IEC
International Electric Commission
IFB
Interface Board
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
IXU
Interface and Switching Unit
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.
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N/LZT 720 0090 Uen R1A 2004-09-17