ABC
|
Administration and Billing Center
|
AC
|
Authentication Center
|
ASCI
|
Advanced Speech Call Items
|
ATC
|
Automatic Train Control
|
ATP
|
Automatic Train Protection
|
BHCA
|
Busy Hour Call Attempt
|
BS
|
Base Station
|
BSC
|
Base Station Controller
|
BSS
|
Base Station Subsystem
|
BTS
|
Base Transceiver Station
|
CBS
|
Cell Broadcast Service
|
CCITT
|
Committee for International Telegraph & Telecommunications
|
CI
|
Cell Identifier
|
CLIP
|
Calling Line Identification Presentation
|
CLIR
|
Calling Line Identification Restriction
|
COLP
|
COnnected Line identification Presentation
|
COLR
|
COnnected Line identification Restriction
|
CT
|
Craft Terminal
|
C/I
|
Carrier to Interference ratio
|
E.164
|
CCITT Recommendation (Numbering plan for the ISDN)
|
EDSS
|
European Digital Subscriber Signalling System
|
EIR
|
Equipment Identification Register
|
EIRENE
|
European Integrated Railway radio Enhanced NEtwork
|
eMLPP
|
Enhanced Multi-Level Precedence and Pre-emption service
|
ERTMS
|
European Rail Traffic Management System
|
ETCS
|
European Train Control System
|
ETSI
|
European Telecommunications Standards Institute
|
EWSD
|
Elektronisches Wählsystem Digital (Digital Switching System)
|
FA
|
Functional Addressing
|
FN
|
Functional Number
|
GCR
|
Group Call Register
|
GMSC
|
Gateway Mobile Switching Centre
|
GPRS
|
General Packet Radio Services (in GSM)
|
GPS
|
Global Positioning System
|
GSM
|
Global System for Mobile Communication
|
GSM-R
|
Global System for Mobile Communication (for Railway applications)
|
HDLC
|
High Level Data Link Control protocol
|
HDSL
|
High speed Digital Subscriber Line
|
HLR/AC
|
Home Location Register/Authentication Center
|
HSCSD
|
High Speed Circuit Switched Data
|
ID
|
Identification
|
IN
|
Intelligent Network
|
IP
|
Internet Protocol
|
ISDN
|
Integrated Services Digital Network
|
LAC
|
Local Area Code
|
LAN
|
Local Area Network
|
LDA
|
Location Dependent Addressing
|
MAC
|
Message Authentication Code
|
MCC
|
Mobile Country Code
|
MLPP
|
Multi-Level Precedence and Pre-emption service
|
MNC
|
Mobile Network Code
|
MOC
|
Mobile Originated Call
|
MORANE
|
Mobile RAdio for Railways Networks in Europe
|
MoU
|
Memorandum of Understanding
|
MS
|
Mobile Subscriber
|
MSC
|
Mobile Switching Centre
|
MSC/VLR
|
Mobile Switching Center/Visitor Location Register
|
MSISDN
|
Mobile Station ISDN Number
|
MTC
|
Mobile Terminated Call
|
NTPM
|
Network Termination Point Module
|
PABX
|
Private Automatic Branch eXchange
|
PAMR
|
Public Access Mobile Radio
|
PCM
|
Pulse Code Modulation
|
PCS
|
Personal Communications System
|
PDH
|
Plesiochronous Digital Hierarchy
|
PDTCH
|
Packed Data Traffic Channel
|
PLMN
|
Public Land Mobile Network
|
PMR
|
Private Mobile Radio
|
PSTN
|
Public Switched Telephone Network
|
QoS
|
Quality of Services
|
RAC
|
Railway Access Code
|
RBC
|
Radio Block Center
|
SACCH
|
Stand-Alone Control CHannel
|
SCI
|
Subscriber Controller Input
|
SCP
|
Service Control Point
|
SDH
|
Synchronous Digital Hierarchy
|
SMP
|
Service Management Point
|
SMS
|
Short Message Service
|
SSP
|
Service Switching Point
|
SSS
|
Switching SubSystem
|
TCH
|
Traffic Channel
|
TDMA
|
Time Division Multiple Access
|
TK
|
Telekomunikacja Kolejowa Spółka z o.o.
|
TRAU
|
Transcoding Rate Adaption Unit
|
TRX
|
Transceiver
|
UIC
|
Union International de Chemin de fer
|
UIN
|
User Identifier Number
|
UMTS
|
Universal Mobile Telephone System
|
USSD
|
Unstructured Supplementary Service Data
|
UUS.1
|
User to User Signalling 1
|
VBS
|
Voice Broadcast Service
|
VGC
|
Voice Group Calls
|
VGCS
|
Voice Group Call Service
|
VLR
|
Visitor Location Register
|
VMS
|
Voice Mail Service
|
VMSC
|
Visited MSC
|