Abbreviations

1G	First Generation
2G	Second Generation
3G	Third Generation
3GPP	Third Generation Partnership Project
8-PSK	Eight-state Phase-Shift Keying
AC	Address Control
AGCH	Access Grant Channel
AN	Access Network
APN	Access Point Name
ARFCN	Absolute Radio Frequency Channel Number
ARQ	Automatic Repeat reQuest
AuC	Authentication Center
BC	Bearer Channel
BCCH	Broadcast Control Channel
BCS	Block Check Sequence
BEC	Backward Error Correction
BEP	Bit Error Probability
BG	Border Gateway
BH	Block Header
BSC	Base Station Controller
BSIC	Base Station Identity Code
BSN	Block Sequence Number
BSS	Base Station Sub-system
BSSAP	BSS Application Part
BSSGP	BSS GPRS Protocol
BSSMAP	BSS Management Application Part
BTS	Base Transceiver Station
BVC	BSSGP Virtual Connection
BVCI	BSSGP Virtual Connection Identifier
CA	Cell Allocation
CBCH	Cell Broadcast Channel
CBS	Cell Broadcast Service
CC	Call Control
CC	Country Code
CCCH	Common Control Channel
CCN	Cell Change Notification
CCU	Channel Codec Unit
CDMA	Code Division Multiple Access
CGI	Cell Global Identity
CI	Cell Identity
C/I	Carrier/Interference
CM	Connection Management
CN	Core Network
CPS	Coding and Puncturing Scheme
CS	Coding Scheme
CU	Cell Update
CV	Countdown Value
D	Direction
D-AMPS	Digital-Advanced Mobile Phone Services
DL	Downlink
DLCI	Data Link Connection Identifier
DNS	Domain Name System
DRX	Dis-continuous Reception
DTAP	Direct Transfer Application Part
DTM	Dual Transfer Mode
ECSD	Enhanced Circuit Switched Data
EDGE	Enhanced Data Rates for Global Evolution
EGPRS	Enhanced GPRS
EGPRS	Enhanced General Packet Radio Service
EGPRS	Enhanced GPRS
EIR	Equipment Identity Register
ETSI	European Telecommunications Standards Institute
FACCH	Fast Associated Control Channel
FACCH	Fast Associated Control CHannel
FBI	Final Block Indicator
FCCH	Frequency Correction Channel
FCS	Frame Check Sequence
FDMA	Frequency Division Multiple Access
FEC	Frame Error Checking / Forward Error Correction
FH	Frame Header
FN	Frame Number
FPB	First Partial Bitmap
FQDN	Fully Qualified Domain Name
FR	Frame Relay
FS	Final Segment
FSM	Finite State Machine
GERAN	GSM/EDGE Radio Access Network
GGSN	Gateway GPRS Support Node
GMM	GPRS Mobility Management
GMSC	Gateway Mobile Switching Center
Gmsk	Gaussian Minimum Shift Keying
GPRS	General Packet Radio Services
GSM	Global System for Mobile Communication
GTP	GPRS Tunneling Protocol
GTP-C	GPRS Tunneling Protocol for Control Plane
GTP-U	GPRS Tunneling Protocol for User Plane
HCS	Header Check Sequence
HCS	Hierarchical Cell Structures
HLR	Home Location Register
HPLMN	Home PLMN
HSCSD	High-Speed Circuit Switched Data
ICMP	Internet Control Message Protocol
IMEI	International Mobile Equipment Identity
IMSI	International Mobile Subscriber Identity
IP	Internet Protocol
IR	Incremental Redundancy
IWMSC	Interworking MSC
LA	Location Area
LA	Link Adaptation
LAC	Location Area Code
LAI	Location Area Identity
LAPD	Link Access Protocol on the D Channel
LAPDm	Link Access Protocol on the Dm Channel
LCS	Location Services
LI	Length Indicator
LLC	Logical Link Control
LLC	Logical Link Control
LMSI	Local Mobile Station Identity
LR	Location Registration
LSP	Locally Significant Part
M	More
MAC	Medium Access Control
MAP	Mobile Application Part
MCC	Mobile Country Code
MCS	Modulation and Coding Scheme
ME	Mobile Equipment
MM	Mobility Management
MNC	Mobile Network Code
MNRG	MS Not Reachable for GPRS
MNRR	MS Not Reachable Reason
MO	Mobile Originated
MS	Mobile Station
MSC	Mobile-Services Switching Center
MSIN	Mobile Subscriber Identification Number
MSISDN	Mobile Subscriber ISDN Number
MSRN	Mobile Station Roaming Number
MT	Mobile Termination
MT	Mobile Terminated
MTP	Message Transfer Part
NBP	Next Partial Bitmap
NDC	National Destination Code
NMO	Network Mode of Operation
NMS	Network Management System
NMSI	National Mobile Station Identity
NS	Network Service
NSAPI	Network-layer SAPI
NSC	Network Service Control Sublayer
NSE	Network Service Entity
NSEI	Network Service Entity Identifier
NSS	Network and Switching Sub-system
NS-VC	Network Service Virtual Connection
NS-VCI	Network Service Virtual Connection Identifier
PACCH	Packet Associate Control Channel
PAGCH	Packet Access Grant Channel
PBCCH	Packet BCCH
PBCCH	Packet Broadcast Control Channel
PC	Power Control
PCCCH	Packet Common Control Channel
PCH	Paging Channel
PCU	Packet Control Unit
PDC	Personal Digital Communications
PDCH	Packet Data CHannel
PDCH	Packet Data Channel
PDN	Packet Data Network
PDP	Packet Data Protocol
PDTCH	Packet Data TCH
PDTCH	Packet Data Traffic Channel
PDU	Protocol Data Unit
PFC	Packet Flow Context
PFI	Packet Flow Identifier
PI	Packet Idle
PI	PFI Indicator
PLL	Physical Link Layer
PLMN	Public Land Mobile Network
PNCH	Packet Notification Channel
PPCH	Packet Paging Channel
PPP	Point-to-Point Protocol
PR	Power Reduction
PRACH	Packet Random Access Channel
PSI	Packet System Information
PT	Packet Transfer
PTCCH	Packet Timing Advance Control Channel
P-TMSI	Packet Temporary Mobile Subscriber Identity
PVC	Permanent Virtual Circuit
QoS	Quality of Service
R	Retry
RA	Routing Area
RACH	Random Access Channel
RAI	Routing Area Identity
RAND	Random Number
RBB	Received Block Bitmap
RBSN	Reduced Block Sequence Number
RFL	Radio Frequency Layer
RLC	Radio Link Control
RNR	Receiver Not Ready
RR	Radio Resource
RR	Radio Resource
RRBP	Relative Reserved Block Period
RRC	Radio Resource Control
RTI	Radio Transaction Identifier
SACCH	Slow Associated Control Channel
SACCH/TF	Slow Associated Control Channel for full rate traffic channel
SACCH/TH	Slow Associated Control Channel for half rate traffic channel
SAP	Service Access Point
SAPI	Service Access Point Identifier
SAPI	Service Access Point Identifier
SCCP	Signalling Connection Control Part
SCH	Synchronization Channel
SDCCH	Standalone Dedicated Control Channel
SDU	Service Data Unit
SGSN	Serving GPRS Support Node
SI	System Information
SI	Stall Indicator
SIM	Subscriber Identity Module
SM	Session Management
SME	Short Message Entity
SMS	Short Message Service
SM-SC	Short Message Service Center
SN	Subscriber Number
SNDCP	Sub-Network Dependent Convergence Protocol
SNR	Serial Number
SNS	Sub-Network Service Sublayer
SNS	Sequence Number Space
SPI	Security Parameter Index
SS	Supplementary Service
TA	Timing Advance
TAC	Type Allocation Code
TAI	Timing Advance Index
TBF	Temporary Block Flow
TCAP	Transaction Capability Application Part
TCH	Traffic Channel
TCH/F	Full Rate Traffic Channel
TCH/H	Half Rate Traffic Channel
TCP	Transmission Control Protocol
TDMA	Time Division Multiple Access
TE	Terminal Equipment
TEID	Tunnel Endpoint Identifier
TFI	Temporary Frame Identity
TFT	Traffic Flow Template
TI	TLLI Indicator
TLLI	Temporary Logical Link Identifier
TMSI	Temporary Mobile Subscriber Identity
TOS	Type of Service
TRX	Transceiver
TS	Timeslot
TSC	Training Sequence Code
UDP	User Datagram Protocol
UL	Uplink
UMTS	Universal Mobile Telecommunication System
UNI	User to Network Interface
USF	Uplink State Flag
USSD	Unstructured Supplementary Service Data
UUS	User to User Signalling
VBS	Voice Broadcast Service
VGCS	Voice Group Call Service
VLR	Visitor Location Register
VPLMN	Visited PLMN
WS	Window Size
WWW	World Wide Web

---