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