Abbreviations used in the telecom sector : Telecom Abbreviations

Here is a collection of Abbreviations used in the telecom sector.

2G 2ndGeneration

3G 3rd Generation

AAL ATM Adaptation Layer

AAL2 ATM Adaptation Layer (Type-2)

AAL5 ATM Adaptation Layer (Type-5)

ACK Acknowledgement

AI Acquisition Indicator

AICH Acquisition Indicator Channel

ALCAP Access Link Control Application Protocol

AM Acknowledged Mode

AMR Adaptive Multi Rate

AN Access Network

APDU Application Protocol Data Unit

API Application Programming Interface

ARP Address Resolution Protocol

ARQ Automatic Repeat Requestbr />

AS Access Stratum

ASC Access Service Class

ASN.1 Abstract Syntax Notation One

ATM Asynchronous Transfer Mode

AuC Authentication Centre

B-ISDN Broadband ISDN

BCCH Broadcast Control Channel

BCFE Broadcast Control Functional Entity

BCH Broadcast Channel

BER Bit Error Rate

BID Binding Identity

BLER Block Error Rate

BMC Broadcast/Multicast Control

BS Base Station

BSC Base Station Controller

BSS Base Station System

BTS Base Transceiver Station

C-RNTI Cell Radio Network Temporary Identity

Controlling RNC Radio Network Temporary Identity

CAMEL Customised Application for Mobile network Enhanced Logic

CAP CAMEL Application Part

CB Cell Broadcast

CBR Constant Bit Rate

CBS Cell Broadcast Service

CC Call Control

CCCH Common Control Channel

CCF Call Control Function

CCH Control Channel

CCPCH Common Control Physical Channel

CCTrCH Coded Composite Transport Channel

CDMA Code Division Multiple Access

CN Core Network

CPICH Common Pilot Channel

CPCH Common Packet Channel

CPCS Common Part Convergence Sublayer (ATM)

CPS Common Part Sublayer

CPU Central Processing Unit

CRC Cyclic Redundancy Check

CRNC Controlling Radio Network Controller

CS-GW Circuit Switched Gateway

CS Circuit Switched

CSCF Call Server Control Function

CSE Camel Service Environment

CTCH Common Traffic Channel

CTDMA Code Time Division Multiple Access

SCTP Simple Control Transmission Protocol

CW Continuous Wave (unmodulated signal)

DC Dedicated Control (SAP)

DCA Dynamic Channel Allocation

DCCH Dedicated Control Channel

DCH Dedicated Channel

DECT Digital Enhanced Cordless Telecommunications

DHCP Dynamic Host Configuration Protocol

diff-serv Differentiated services

DL Downlink (Forward Link)

DN Destination Network

DPCCH Dedicated Physical Control Channel

DPCH Dedicated Physical Channel

DPDCH Dedicated Physical Data Channel

DRAC Dynamic Resource Allocation Control

DRNC Drift Radio Network Controller


DRX Discontinuous Reception

DS-CDMA Direct-Sequence Code Division Multiple Access

DSCH Downlink Shared Channel

DTCH Dedicated Traffic Channel

DTMF Dual Tone Multiple Frequency

DTX Discontinuous Transmission

E-GGSN Enhanced GGSN

E-HLR Enhanced HLR

EDGE Enhanced Data rates for GSM Evolution


eMLPP enhanced Multi-Level Precedence and Pre-emption

ETSI European Telecommunications Standards Institute

FACH Forward Access Channel

FAUSCH Fast Uplink Signaling Channel

FAX Facsimile

FCS Frame Check Sequence

FDD Frequency Division Duplex

FDMA Frequency Division Multiple Access

FEC Forward Error Correction

FER Frame Erasure Rate, Frame Error Rate

FFS For Further Study

FN Frame Number

FP Frame Protocol

GC General Control (SAP)

GGSN Gateway GPRS Support Node

GMSC Gateway MSC

GMSK Gaussian Minimum Shift Keying

GP Guard Period

GPRS General Packet Radio Service

GSM Global System for Mobile communications

GSN GPRS Support Nodes

GTP GPRS Tunneling Protocol


HCS Hierarchical Cell Structure

HE-VASP Home Environment Value Added Service Provider

HHO Hard Handover

HLR Home Location Register

HN Home Network

HO Handover

HPLMN Home Public Land Mobile Network

HSCSD High Speed Circuit Switched Data

HSS Home Subscriber Server

HTTP Hyper Text Transfer Protocol

I/O Input/Output

ICGW Incoming Call Gateway

ID Identifier

IE Information Element

IEC International Electrotechnical Commission

IETF Internet Engineering Task Force

IK Integrity Key

IMEI International Mobile Equipment Identity

IMGI International mobile group identity

IMSI International Mobile Subscriber Identity

IMT-2000 International Mobile Telecommunications 2000

IN Intelligent Network

INAP Intelligent Network Application Part
IP-M IP Multicast

ISDN Integrated Services Digital Network

ISO International Organisation for Standardisation

ISP Internet Service Provider


ITU International Telecommunication Union

IUI International USIM Identifier

kbps kilo-bits per second

ksps kilo-symbols per second

L1 Layer 1 (physical layer)

L2 Layer 2 (data link layer)

L3 Layer 3 (network layer)

LAC Link Access Control

LAI Location Area Identity

LAN Local Area Network

LCS Location Services

LLC Logical Link Control

LN Logical Name

LSA Localised Service Area

LSB Least Significant Bit

MA Multiple Access

MAC-A MAC used for authentication and key agreement (TSG T WG3 context)

MAC-I MAC used for data integrity of signalling messages (TSG T WG3 context)

MAC Medium Access Control (protocol layering context)

MAHO Mobile Assisted Handover

MAP Mobile Application Part

MCC Mobile Country Code

Mcps Mega-chips per second

MCU Media Control Unit

MDS Multimedia Distribution Service

ME Mobile Equipment

MEHO Mobile evaluated handover

MER Message Error Rate

MExE Mobile station (application) Execution Environment

MGCF Media Gateway Control Function

MGCP Media Gateway Control Part

MGT Mobile Global Title

MGW Media GateWay

MM Mobility Management

MMI Man Machine Interface

MNC Mobile Network Code

MNP Mobile Number Portability

MO Mobile Originated

MOHO Mobile Originated Handover

MOS Mean Opinion Score

MPEG Moving Pictures Experts Group

MRF Media Resource Function

MS Mobile Station

MSB Most Significant Bit

MSC Mobile Switching Centre

MSE MExE Service Environment

MSID Mobile Station Identifier

MSIN Mobile Station Identification Number

MSP Multiple Subscriber Profile

MT Mobile Terminated

MTP Message Transfer Part

MTP3-B Message Transfer Part level 3

MUI Mobile User Identifier

NAS Non-Access Stratum

NBAP Node B Application Part

NDC National Destination Code

NEHO Network evaluated handover

NITZ Network Identity and Time Zone

NMSI National Mobile Station Identifier

NNI Network-Node Interface

NO Network Operator

NP Network Performance

NPA Numbering Plan Area

NPI Numbering Plan Identifier

NRT Non-Real Time

NSAP Network Service Access Point

NSDU Network service data unit

NSS Network Sub System

Nt Notification (SAP)

NT Non Transparent

NUI National User / USIM Identifier

NW Network

O&M Operations and Maintenance

OCCCH ODMA Common Control Channel

ODB Operator Determined Barring

ODCCH ODMA Dedicated Control Channel

ODCH ODMA Dedicated Channel

ODMA Opportunity Driven Multiple Access

ORACH ODMA Random Access Channel

ODTCH ODMA Dedicated Traffic Channel

OSA Open Service Architecture

OVSF Orthogonal Variable Spreading Factor

PBP Paging Block Periodicity

PBX Private Branch eXchange

PC Power Control

Personal Computer

PCCH Paging Control Channel

PCH Paging Channel

PCK Personalisation Control Key

PCPCH Physical Common Packet Channel

PCCPCH Primary Common Control Physical Channel

PCS Personal Communication System

PCU Packet Control Unit

PDCP Packet Data Convergence Protocol

PDH Plesiochronous Digital Hierarchy

PDN Public Data Network

PDP Packet Data Protocol

PDSCH Physical Downlink Shared Channel

PDU Protocol Data Unit

PG Processing Gain

PHS Personal Handyphone System

PHY Physical layer

PhyCH Physical Channel

PI Page Indicator

PICH Page Indicator Channel

PID Packet Identification

PIN Personal Identification Number

PLMN Public Land Mobile Network

PN Pseudo Noise

PPM Parts Per Million

PRACH Physical Random Access Channel

PS Packet Switched

PSC Primary Synchronization Code

PSCH Physical Shared Channel

PSE Personal Service Environment

PSTN Public Switched Telephone Network

PTM Point-to-Multipoint

PTP Point to point

PUSCH Physical Uplink Shared Channel

QoS Quality of Service

QPSK Quadrature (Quaternary) Phase Shift Keying

R-SGW Roaming Signalling Gateway

R00 Release 2000

R99 Release 1999

RA Routing Area

RAB Radio Access Bearer

RACH Random Access Channel

RAI Routing Area Identity

RAN Radio Access Network

RANAP Radio Access Network Application Part

RB Radio Bearer

RF Radio Frequency

RFC Request For Comments

RFE Routing Functional Identity

RFU Reserved for Future Use

RL Radio Link

RLC Radio Link Control

RLCP Radio Link Control Protocol

RNC Radio Network Controller

RNS Radio Network Subsystem

RNSAP Radio Network Subsystem Application Part

RNTI Radio Network Temporary Identity

RRC Radio Resource Control

RRM Radio Resource Management

RSCP Received Signal Code Power

RSSI Received Signal Strength Indicator

RST Reset

RSVP Resource ReserVation Protocol

RT Real Time

RTP Real Time Protocol

RU Resource Unit

RX Receive


S-RNTI SRNC Radio Network Temporary Identity

SAAL Signaling ATM Adaptation Layer

SACCH Slow Associated Control Channel

SAP Service Access Point

SAPI Service Access Point Identifier

SAR Segmentation and Reassembly

SAT SIM Application Toolkit

SCCH Synchronization Control Channel

SCCPCH Secondary Common Control Physical Channel

SCF Service Control Function (IN context), Service Capability Feature (VHE/OSA context)

SCH Synchronization Channel

SCI Subscriber Controlled Input

SCP Service Control Point

SDCCH Stand-Alone Dedicated Control Channel

SDH Synchronous Digital Hierarchy

SDU Service Data Unit

SE Security Environment

SF Spreading Factor

SFN System Frame Number

SGSN Serving GPRS Support Node

SHCCH Shared Channel Control Channel

SIM GSM Subscriber Identity Module

SIP Session Initiated Protocol

SIR Signal-to-Interference Ratio

SMS Short Message Service

SMS-CB SMS Cell Broadcast

SN Serving Network

SNDCP Sub-Network Dependent Convergence Protocol

SoLSA Support of Localised Service Area

SP Switching Point

Service Provider

SRNC Serving Radio Network Controller

SRNS Serving RNS

SS7 Signaling System No. 7

SSCOP Service Specific Connection Oriented Protocol

SSCF Service Specific Co-ordination Function

SSCF-NNI Service Specific Coordination Function – Network Node Interface

SSCS Service Specific Convergence Sublayer

SSDT Site Selection Diversity Transmission

SSF Service Switching Function

SSSAR Service Specific Segmentation and Re-assembly sublayer

STTD Space Time Transmit Diversity

SVC Switched virtual circuit

T-SGW Transport Signalling Gateway

T Transparent

TCH Traffic Channel

TCP Transmission Control Protocol

TD-CDMA Time Division-Code Division Multiple Access

TDD Time Division Duplex

TDMA Time Division Multiple Access

TE Terminal Equipment

TF Transport Format

TFC Transport Format Combination

TFCI Transport Format Combination Indicator

TFCS Transport Format Combination Set

TFI Transport Format Indicator

TFS Transport Format Set

TLLI Temporary Logical link Identity

TMSI Temporary Mobile Subscriber Identity

TPC Transmit Power Control

TR Technical Report

TrCH Transport Channel

TS Technical Specification

TSTD Time Switched Transmit Diversity

TX Transmit

U-RNTI UTRAN Radio Network Temporary Identity

UARFCN UTRA Absolute Radio Frequency Channel Number

UARFN UTRA Absolute Radio Frequency Number

UDP User Datagram Protocol

UE User Equipment

UER User Equipment with ODMA relay operation enabled

UI User Interface

UICC Universal Integrated Circuit Card

UL Uplink (Reverse Link)

UM Unacknowledged Mode

UMS User Mobility Server

UMTS Universal Mobile Telecommunications System

UNI User-Network Interface

UP User Plane

UPT Universal Personal Telecommunication

URA User Registration Area

URAN UMTS Radio Access Network

URI Uniform Resource Identifier

URL Uniform Resource Locator

USC UE Service Capabilities

USCH Uplink Shared Channel

USIM Universal Subscriber Identity Module

USSD Unstructured Supplementary Service Data

UT Universal Time

UTRA Universal Terrestrial Radio Access

UTRAN Universal Terrestrial Radio Access Network

UUI User-to-User Information

UUS Uu Stratum

VASP Value Added Service Provider

VBR Variable Bit Rate

VBS Voice Broadcast Service

VC Virtual Circuit

VGCS Voice Group Call Service

VHE Virtual Home Environment

VoIP Voice Over IP

VPLMN Visited Public Land Mobile Network

VPN Virtual Private Network

WAE Wireless Application Environment

WAP Wireless Application Protocol

WCDMA Wideband Code Division Multiple Access

WDP Wireless Datagram Protocol


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Posted on June 9, 2011, in GENERAL KNOWLEDGE, General Studies, Study Material, Telecom Abbreviations. Bookmark the permalink. Leave a comment.

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