Telecom Abbreviations and Acronyms

Here is a collection of abbreviations used in the telecom sector. This Comprehensive Glossary of Telecom

•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

•ISUP - ISDN User Part

•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

•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

•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

•S-CSCF - Serving CSCF

•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 - Standalone 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 - 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

•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