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AGCH Access Grant Channel
ATDMA Asynchronous TDMA
ATM Asynchronous Transfer Mode
BCCH Broadcast Control Channel
BSS Base Station System
BSSAP Base Station System Application Part
BSSMAP Base Station System Management Application Part
BTS Base Transceiver Station
BTSM Base Transceiver Station Management
CDMA Code Division Multiple Access
DTAP Direct Transfer Application Part
EIR Equipment Identity Register
ES Earth Station
FACCH Fast Associated Control Channel
FCC Federal Communications Commission
FCCH Frequency Correction Channel
FDD Frequency Division Duplex
FDM Frequency Division Multiplex
FDMA Frequency Division Multiple Access
FEC Forward Error Correction
GEO Geostationary
GMSC Gateway MSC
GMSK Gaussian Minimum Shift Keying
GOCCs Ground Operations Control Centres
GSM Global System for Mobile Communications
HLR Home Location Register
IMEI International Mobile Equipment Identity
IMSI International Mobile Subscriber Identity
ISL Inter-Satellite Link
ISO International Standards Organisation
IWF Inter-Working Function
IWMSC Inter-Working Mobile Switching Centre
LAPD Link Access Protocol for the ISDN D-channel
MEO Medium Earth Orbit
MS (GSM) Mobile Station
MSISDN MS ISDN (Integrated Services Digital Network) number
MSRN MS roaming number
MT (Satellite) Mobile Terminal
MTP Message Transport Part
OSI Open Systems Interconnect
PCH Paging Channel
PLMN Public LAnd MObile Network
PSTN Public Switched Telephone Network
QPSK Quarternary Phase Shift Keying
RACH Random Access Channel
RF Radio Frequency
RPE/LTP Regular Pulse Excited Long Term (pitch) Prediction
RR Radio Resource
SACCH Slow Associated Control Channel
SCCP Signalling Connection Control Part
SCH Synchronisation Channel
SDCCH Stand-Alone Dedicated Control Channel
SDMA Space Division Multiple Access
SMS Short Message Service
SOCC Satellite Operations Control Centres
TCH Traffic Channel
TDD Time Division Duplex
TDMA Time Division Multiple Access
TRAU Transcoder and Rate Adapter Unit
TT&C Telemetry, Tracking and Control
TX Transmit
UMTS Universal Mobile Telecommunications System
VLR Visitor Location Register

Lloyd Wood (
last updated 22 December 2000