GSM: Some Abbreviations

Hey folks, I've been reading about GSM a lot lately. Found some important abbreviations which may get handy in case you are studying something about GSM and all..

There are lot many abbreviations, but here are some of them which I have kept in my file....

GSM - Global System For Mobile Communication
PLMN - Public Land Mobile Network
CS - Circuit Switched
PS - Packet Switched
RCF - Roaming Call Forwarding
VLR - Visitor Location Register
HLR - Home Location Register
RCP - Radio Control Point
LAC - Location Area Code
LAI - Location Area Identity
IMSI - Internation Mobile Subscriber Identity
HPLMN - Home Public Land Mobile Network
GERAN - GSM EDGE Radio Access Network
UTRAN - UMTS Terrestrial Radio Access Network
UMTS - Universal Mobile Telecommunication System
SIM - Subscriber Identity Module (2G)
USIM - Universal Subscriber Identity Module (3G)
LTE - Long Term Evolution
CSFB - Circuit Switched FallBack
IMS - IP Multimedia Subsystem
MME - Mobile Management Entity
CAMEL - Customised Applications for Mobile networks Enhanced Logic
IAM - Initial Address Message
SS7/C7 - Common Channel Signaling System No.7
EHPLMN - Equivalent Home Public Land Mobile Network
CTS - Cordless Telephony System
CSG - Closed Subscriber Group
GPRS - General Packet Radio Service
GAN - Generic Access Network
MS/UE - Mobile Station/User Equipment
EPS - Evolved Packet System
PCCO - Packet Cell Change Order
BSIC - Base Station Identity Code
TBF - Temporary Block Flow
TLLI - Temporary Logic Link Identifier
RLC - Radio Link Control
RR - Radio Resources
BCCH - Broadcast Control Channel
PCCN - Packet Cell Change Notification
DRX - Discontinuous Reception
DCCH - Dedicated Control Channel
BA List - BCCH Allocation List
GUTI - Globally Unique Temporary Identity
CCCH - Common Control Channel
USF - Uplink State Flag
SRNC - Service Radio Network Controller
AGCH - Access Grant Channel
SDCCH - Stand-alone Dedicated Control Channel
CR - Change Request
PTCCH - Packet Timing Advance Control Channel
ARFCN - Absolute Radio Frequency Channel Number
PDP - Packet Data Protocol
GTP - GPRS Tunneling Protocol
RADIUS - Remote Authentication Dial In User Service

Hope you find it worth sharing..

..... Later People :)