Glossary Of Terms

The telecommunications industry is awash with abbreviations.  We have drawn together many of common terms you will find in the telecommunication industry and hope you find it useful.

ACDAutomatic Call Distribution
ADRA-interface Data RecordSS7 signalling
ADSLAsynchronous Digital Subscriber Line
AGCFAccess Gateway Control Function
AMAAutomatic Message Accounting
APNAccess Point Number
APONATM Passive Optical Network
ARPUAverage Revenue Per UserFinance
ASCIIAmerican Standard Code for Information Interchange
ASN.1Abstract Syntax Notation 1Data encoding
ASRAnswer Seizure Ratio
ATAAnalogue Terminal AdapterCM
ATM (1)Asynchronous Transfer Mode
ATM (2)Automated Teller Machine
AuCAuthentication Centre2G, 3G
BCDBinary Coded DecimalData encoding
BELBusiness Exchange Line
BGCFBorder Gateway Control Function
BSCBase Station Controller2G Voice
BSSBusiness Support SystemGeneral
BSSBase Station System2G Voice
BTSBase Transceiver Station2G Voice
CACCarrier Access Code
CAMELCustomised Application for Mobile Enhanced (network) LogicGSM
CASChannel Associated SignallingSignalling
CCFCharging Control Function
CCNCharging Control Node
CCSCommon Channel SignallingSignalling
CDMACode Division Multiple AccessTransmission
CDRCall Detail Record
CEMCustomer Experience Management
CentrexCENTral EXchange
CFCall ForwardingSupplementary service
CFCCall Forwarding ConditionalSupplementary service
CFUCall Forwarding UnconditionalSupplementary service
CGWCharging Gateway
CIDRClassless Inter-Domain RoutingIP Address Range
CLIPCalling Line Identity PresentationSupplementary service
CLIRCalling Line Identity RestrictionSupplementary service
CMCable Modem
CMTSCable Modem Termination System
COCCAMEL Originated Call
CPECustomer Premises Equipment
CPSCarrier Pre-Select
CRMCustomer Relationship ManagementBSS
CSCFCall Session Control Function
CSDCircuit Switched Data
CSICustomer Satisfaction Index
CSPCommunications Service Provider
CSVComma Separated Variables
CTCCAMEL Terminating Call
CUGClosed User Group
D-SideDistribution SideMDF
DACCSDigital Access Cross Connect Switch
DASS2Digital Access Signalling System 2Signalling
DCFDiscounted Cash Flow
DDFDigital Distribution Frame
DDIDirect Dial Inbound
DELDigital Exchange Line
DHCPDynamic Host Configuration ProtocolBroadband
DLEDigital Local ExchangeNetwork element
DNDirectory Number
DOCSISData Over Cable Service Interface Specification
DPIDeep Packet Inspection
DPCDestination Point CodeSS7 signalling
DPNSSDigital Private Network Signalling System
DSLAMDigital Subscriber Line Access Multiplexer
E-SideEquipment SideMDF
E064Kbit/s (1 x 64Kbis/s voice channels)PDH
E12Mbit/s (30 x 64Kbis/s voice channels)PDH
E28Mbit/s (4 x E1 2Mbit/s channels)PDH
E334Mbit/s (4 x E2 4Mbit/s channels)PDH
E4140Mbit/s (4 x E3 32Mbit/s channels)PDH
EBCElement Based ChargingTariffs
EBCDICExtended Binary Coded Decimal Interchange CodeData encoding
EDGEEnhanced Date rate for GSM EvolutionGSM
EDREvent Data Record
EDVAEmbedded Digital Voice AdapterCM
EIREquipment Identity RegisterGSM
EMYEmergency call
EPGElectronic Programme Guide
EPONEthernet Passive Optical Network
ESMEExternal Short Message Entity
eTOMenhanced Telecoms Operations MapTMForum
FABFulfilment, Assurance and Billing
FORWForwarding call record
FSC?? (fixed line subscription)
FSNFile Sequence Number
FTPFile Transfer Protocol
FUPFair Usage PolicyData services
G-VPNGlobal Virtual Private Network
GGSNGateway GPRS Support Node3G Data
GMSCGateway Mobile Switching Centre2G, 3G
GPONGigabit Passive Optical Network
GPRSGeneral Packet Radio Service
GRXGPRS Roaming ExchangeGSM
GSMGlobal System for MobileGSM
GSMAGSM AssociationGSM
HDSLHigh bit rate Digital Subsciber Line
HFCHybrid Fibre Coax
HLRHome Location RegisterGSM 3G
HNIHome Network Identity
HPMNHome Public Mobile Network
HSCSDHigh Speed Circuit Switched Data
HSSHome Subscriber ServerGSM 4G
HURHigh User ReportRoaming
IAAInter Administration AccountingInterconnect
ICSInterConnect Settlement
IDAIndirect Access
IDDInternational Direct Dialling
IGWIncoming Gateway Call record
IMEIInternational Mobile Equipment Identity
IMSIP Multimedia Sub-system
IMSIInternational Mobile Subscriber Identity
INIntelligent Network
IN/SCPIntelligent Network Service Control PointNetwork element
IXPInternet eXchange PointData services
IPInternet Protocol
IPDRInternet Protocol Data Record
ISDNIntegrated Services Digital Network
ISPInternet Service Provider
ISUPISDN User PartSS7 signalling
ITILInformation Technology Infrastructure Library
ITUInternational Telecommunications Union
IVRInteractive Voice Response (unit)Network element
KPIKey Performance Indicator
KQIKey Quality Indicator
LANLocal Access Network
LANLocal Area Network
LCSLocation ServiceGSM
LDCLong Duration Call
LENLine Equipment Number
LINXLondon INternet eXchange
LNPLocal Number Portability
LSBLeast Significant Byte (first)
LTELong Term Evolution
LTULine Termination Unit
M2MMachine to Machine
MAPMobile Application PartSS7 signalling
MCCMobile Country Code
MDFMain Distribution Frame
MGCFMedia Gateway Control Function
MGWMedia Gateway 4G
MMEMobiliy Management Entity4G/LTE
MMS Multimedia Message
MMSCMultimedia Messaging Service Centre
MNCMobile Network Code
MNOMobile Network Operator
MNPMobile Number Portability
MOCMobile Originated Call
MoUMinutes of use
MPLSMulti Protocol Label Switching
MSANMulti Service Access Node
MSBMost Significant Byte (first)
MSCMobile Switching Centre2G, 3G
MSINMobile Station Identification Number
MSISDNMobile Service ISDN (number)
MSRNMobile Station Roaming Number
MTCMobile Terminated Call
MVNOMobile Virtual Network Operator
NACDNetwork Automatic Call Distribution
NATNetwork Address Translation
NEMNetwork Element Manager
NGNNext Generation Network
NGNNon Geographic Number
NGOSSNext Generation Operations Support Systems
NMSNetwork Management System
NRNNetwork Routing NumberNumber portability
NRTRDENear Real Time Roaming Data ExchangeRoaming
NSNNokia Siemens Networks
NTSNumber Translation Service
OFCOMOffice of Communications - UK telecommunications regulator
OGWOutgoing Gateway call record
OICKOriginating IN Category Key
OLOOther Licensed Operator
OMOperational Measures
OPCOriginating Point Code
OSNOptical Service Node
OSSOperational Support System
OTAPOver The Air Provisioning
PABXPrivate Automatic Branch Exchange
PBXPrivate Branch Exchange
PBXOPBX Originating call
PBXTPBX Terminating call
PDHPlesiochronous Digital Hierarchy
PDNPacket Data network
PDPPacket Data Protocol
PGWPDN Gateway4G
PMNPublic Mobile NetworkGSM
PMuxPrimary Multiplexer
POCPSTN Originating Call
POIPoint Of Interconnect
POPPoint Of Presence
POSPoint Of Sale
POTSPlain Old Telephone Service
PRSPremium Rate Service
PSDPacket Switch Data
PSDNPacked Switched Data Network
PSNPublic Services Network
PSTNPublic Switched Telephone Network
PTCPSTN Terminating Call
PTTPost, Telegraph and Telephone service
PVRPersonal Video Recorder
Q.931Signalliing protocol
QoSQuality of Service
RADIUSRemote Authentication Dial-In User Service
RAEXRoaming Agree EXchangeGSMA
RAMMRevenue Assurance Maturity ModelTMForum
RANRadio Access Network
RAPReturned Accounts Procedure
RASRemote Access Service
RCFRoaming Call Forwarding
RCHRoaming Clearing House
PCRFPolicy & Charging Rules Function3G, 4G
RFRadio Frequency
RFIRequest For Information
RFPRequest For Proposal
RHERegional Head End
RNCRadio Network Controller3G Data
RNSRadio Network System3G Data
ROAMRoaming call record
RSNRecord Sequence Number
SARService Activation Request
SBCSession Border Controller
SCISubscriber Controlled Input
SCPService Control PointIN Node
SDHSynchronous Digital Hierarchy
SDPService Domain ProcessorIN Node
SFTPSecure File Transfer Protocol
SGSNServing GPRS Support Node3G Data
SGWServing Gateway4G
SHDSLSymmetrical High-bit-rate Digital Subscriber Line
SIDShared Information and Data modelTMForum
SIPSession Initiation ProtocolSignalling
SIMSubscriber Identity Module
SLAService Level Agreement
SMDRStation Message Detail Rcording
SMMOSMS Mobile Originated
SMMTSMS Mobile Terminated
SMPService Management Platform
SMSShort Message Service
SNMPSimple Network Management Protoccol
SOAService Orientated Architecture
SPOCSingle Point Of Contact
SQLStructured Query Language
SQMService Quality Management
SSSupplementary Service
SS7Signalling System number 7
SSPService Switching PointIN Node
STBSet Top Box
STMSynchronous Transfer ModeSDH
STM-1155Mbit/s (63 x 2Mbit/s channels)SDH
STM-4622Mbit/s (4 x STM-1 155Mbit/s channels)SDH
STM-162.5Gbit/s (4 x STM-4 622Mbit/s channels)SDH
STM-3210Gbit/s (4 x STM-16 2.5Gbit/s channels)SDH
STPSignalling Transfer PointIN Node
TADIGTransferred Account Data Interchange GroupGSM
TAMTelecoms Application Map
TAPTransferred Account Procedure
TBCDTelephony Binary Coded DecimalData encoding
TCGTest Call Generation
TDMTime Division Multiplexing
TMBSTotal Metering and Billing SystemRegulatory
TMFTelemanagement Forum
TONType Of Number
UDRUsage Data Record
UMLUnified Modelling Language
UMTSUniversal Mobile Telecommunications System
URIUniform Resource Identifier
USSDUnstructured Supplementary Service Data
VASValue Added Service
VDSLVery-high-bit-rate Digital Subscriber Line
VLRVisitor Location Register
VMSVoice Mail System
VNOVirtual Network Operator
VOCVoice Over Cable
VODVideo On Demand
VoIPVoice Over IP
VoLTEVoice Over LTE
VPMNVisited Public Mobile NetworkMobile roaming
VPNVirtual Private Network
VSVoucher Server
WAPWireless Application Protocol
WiMAXWorldwide Interoperability for Microwave Access
xDRAny type of Data Record e.g. CDR, EDR
XMLeXtended Markup Language