0-9
1x RTT CDMA2000 1x Radio Transmission Technology
2G 2nd Generation
3D Three Dimensional
3G 3rd Generation
3GPP Third Generation Partnership Project
5G 5th Generation
5GC Fifth Generation Core network
5GS 5G System
8-PSK 8-state Phase Shift Keying
A
A-SGW Access Signalling Gateway
A3 Authentication algorithm A3
A38 A single algorithm performing the functions of A3 and A8
A5/1 Encryption algorithm A5/1
A5/2 Encryption algorithm A5/2
A5/X Encryption algorithm A5/0-7
A8 Ciphering key generating algorithm A8
AAL ATM Adaptation Layer
AAL2 ATM Adaptation Layer type 2
AAL5 ATM Adaptation Layer type 5
AB Access Burst
AC Access Class (C0 to C15)
Access Condition
Application Context
Authentication Centre
ACC Automatic Congestion Control
ACELP Algebraic Code Excited Linear Prediction
ACCH Associated Control Channel
ACIR Adjacent Channel Interference Ratio
ACK Acknowledgement
ACL APN Control List
ACLR Adjacent Channel Leakage Power Ratio
ACM Accumulated Call Meter
Address Complete Message
ACMmax ACM (Accumulated Call Meter) maximal value
ACRR Adjacent Channel Rejection Ratio
ACS Adjacent Channel Selectivity
ACU Antenna Combining Unit
ADC Administration Centre
Analogue to Digital Converter
ADCH Associated Dedicated Channel
ADF Application Dedicated File
ADM Access condition to an EF which is under the control of the authority which creates this file
ADN Abbreviated Dialling Numbers
ADPCM Adaptive Differential Pulse Code Modulation
AE Application Entity
AEC Acoustic Echo Control
AEF Additional Elementary Functions
AESA ATM End System Address
AFC Automatic Frequency Control
AGCH Access Grant CHannel
AGV Automated Guided Vehicle
Ai Action indicator
AI Acquisition Indicator
AICH Acquisition Indicator Channel
AID Application IDentifier
AIUR Air Interface User Rate
AK Anonymity Key
AKA Authentication and Key Agreement
AKI Asymmetric Key Index
ALCAP Access Link Control Application Protocol
ALSI Application Level Subscriber Identity
ALW ALWays
AM Acknowledged Mode
AMF Authentication Management Field
AMN Artificial Mains Network
AMR Adaptive Multi Rate
AMR-WB Adaptive Multi Rate Wide Band
AN Access Network
ANP Access Network Provider
AoC Advice of Charge
AoCC Advice of Charge Charging
AoCI Advice of Charge Information
AP Access preamble
APDU Application Protocol Data Unit
API Application Programming Interface
APN Access Point Name
AR Augmented Reality
ARFCN Absolute Radio Frequency Channel Number
ARP Address Resolution Protocol
ARQ Automatic Repeat ReQuest
ARR Access Rule Reference
AS Access Stratum
ASC Access Service Class
ASCI Advanced Speech Call Items
ASE Application Service Element
ASN.1 Abstract Syntax Notation One
AT command ATtention Command
ATM Asynchronous Transfer Mode
ATR Answer To Reset
ATT (flag) Attach
AU Access Unit
AuC Authentication Centre
AUT(H) Authentication
AUTN Authentication token
AWGN Additive White Gaussian Noise
B
B-ISDN Broadband ISDN
BA BCCH Allocation
BAIC Barring of All Incoming Calls
BAOC Barring of All Outgoing Calls
BC Band Category
BCC Base Transceiver Station (BTS) Colour Code
BCCH Broadcast Control Channel
BCD Binary Coded Decimal
BCF Base station Control Function
BCFE Broadcast Control Functional Entity
BCH Broadcast Channel
BCIE Bearer Capability Information Element
BDN Barred Dialling Number
BER Bit Error Ratio
Basic Encoding Rules (of ASN.1)
BFI Bad Frame Indication
BG Border Gateway
BGT Block Guard Time
BI all Barring of Incoming call
BIC Baseline Implementation Capabilities
BIC-Roam Barring of Incoming Calls when Roaming outside the home PLMN country
BID Binding Identity
BLER Block Error Ratio
Bm Full-rate traffic channel
BMC Broadcast/Multicast Control
BN Bit Number
BO all Barring of Outgoing call
BOC Bell Operating Company
BOIC Barring of Outgoing International Calls
BOIC-exHC Barring of Outgoing International Calls except those directed to the Home PLMN Country
BPSK Binary Phase Shift Keying
BS Base Station
Basic Service (group)
Bearer Service
BSG Basic Service Group
BSC Base Station Controller
BSIC Base transceiver Station Identity Code
BSIC-NCELL BSIC of an adjacent cell
BSR Buffer Status Report
BSS Base Station Subsystem
BSSAP Base Station Subsystem Application Part
BSSGP Base Station Subsystem GPRS Protocol
BSSMAP Base Station Subsystem Management Application Part
BSSOMAP Base Station Subsystem Operation and Maintenance Application Part
BTFD Blind Transport Format Detection
BTS Base Transceiver Station
BVC BSS GPRS Protocol Virtual Connection
BVCI BSS GPRS Protocol Virtual Connection Identifier
BW Bandwidth
BWT Block Waiting Time
C
C Conditional
C- Control-
C/I Carrier-to-Interference Power Ratio
CA Carrier Aggregation
C-APDU Command APDU
C-RNTI Cell Radio Network Temporary Identity
C-TPDU Command TPDU
CA Capacity Allocation
Cell Allocation
Certification Authority
CAA Capacity Allocation Acknowledgement
CAD Card Acceptance Device
CAI Charge Advice Information
CAMEL Customised Application for Mobile network Enhanced Logic
CAP CAMEL Application Part
CAZAC Constant Amplitude Zero Auto-Correlation
CB Cell Broadcast
CBC Cell Broadcast Centre
Cipher Block Chaining
CBCH Cell Broadcast CHannel
CBMI Cell Broadcast Message Identifier
CBR Constant Bit Rate
CBS Cell Broadcast Service
CC Call Control
Country Code
Cryptographic Checksum
Component Carrier
CC/PP Composite Capability/Preference Profiles
CCBS Completion of Calls to Busy Subscriber
CCCH Common Control Channel
CCE Control Channel Element
CCF Call Control Function
CCH Control Channel
CCI Capability / Configuration Identifier
CCITT Comité Consultatif International Télégraphique et Téléphonique (The International Telegraph and Telephone Consultative Committee)
CCK Corporate Control Key
CCM Certificate Configuration Message
Current Call Meter
CCO Cell Change Order
CCP Capability/Configuration Parameter
CCPCH Common Control Physical Channel
Cct Circuit
CCTrCH Coded Composite Transport Channel
CD Capacity Deallocation
Collision Detection
CDA Capacity Deallocation Acknowledgement
CDCH Control-plane Dedicated CHannel
CDMA Code Division Multiple Access
CDN Coupling/Decoupling Network
CDR Charging Data Record
CDUR Chargeable DURation
CED called station identifier
CEIR Central Equipment Identity Register
CEND end of charge point
CEPT Conférence des administrations Européennes des Postes et Telecommunications
CF Conversion Facility
all Call Forwarding services
CFB Call Forwarding on mobile subscriber Busy
CFN Connection Frame Number
CFNRc Call Forwarding on mobile subscriber Not Reachable
CFNRy Call Forwarding on No Reply
CFU Call Forwarding Unconditional
CGI Common Gateway Interface
Cell Global Identifier
CHAP Challenge Handshake Authentication Protocol
CHP CHarging Point
CHV Card Holder Verification information
CI Cell Identity
CUG index
CID Cell-ID (positioning method)
CIM Common Information Model
CIR Carrier to Interference Ratio
CK Cipher Key
CKSN Ciphering Key Sequence Number
CLA CLAss
CLI Calling Line Identity
CLIP Calling Line Identification Presentation
CLIR Calling Line Identification Restriction
CLK Clock
CM Connection Management
CMAS Commercial Mobile Alert Service
CMC Connection Mobility Control
CMD Command
CMIP Common Management Information Protocol
CMISE Common Management Information Service
CMM Channel Mode Modify
CN Core Network
Comfort Noise
CNAP Calling Name Presentation
CNG Calling Tone
CNL Co-operative Network List
CNTR Counter
CLNP Connectionless network protocol
CLNS Connectionless network service
COLI COnnected Line Identity
COLP COnnected Line identification Presentation
COLR COnnected Line identification Restriction
COM COMplete
CONNACK Connect Acknowledgement
CONS Connection-oriented network service
CORBA Common Object Request Broker Architecture
CP Cyclic prefix
CP-Admin Certificate Present (in the MExE SIM)-Administrator
CP-TP Certificate Present (in the MExE SIM)-Third Party
CPBCCH COMPACT Packet BCCH
CPICH Common Pilot Channel
CPCH Common Packet Channel
CPCS Common Part Convergence Sublayer
CPS Common Part Sublayer
CPU Central Processing Unit
C-plane Control Plane
C/R Command/Response field bit
CQI Channel Quality Indicator
CRC Cyclic Redundancy Check
CRE Call Ree-establishment procedure
CRNC Controlling Radio Network Controller
CS-GW Circuit Switched Gateway
CS Circuit Switched
Coding Scheme
CSCF Call Server Control Function
CSD Circuit Switched Data
CSE Camel Service Environment
CSG Closed Subscriber Group
CSGID Closed Subscriber Group Identity
CSI Channel State Information
CSPDN Circuit Switched Public Data Network
CT Call Transfer supplementary service
Channel Tester
Channel Type
CTCH Common Traffic Channel
CTDMA Code Time Division Multiple Access
CTFC Calculated Transport Format Combination
CTM Cellular Text telephone Modem
CTR Common Technical Regulation
CTS Cordless Telephony System
CUG Closed User Group
CW Call Waiting
Continuous Wave (unmodulated signal)
CWI Character Waiting Integer
CWT Character Waiting Time
C-RNTI Cell RNTI
D
DAC Digital to Analog Converter
DAD Destination ADress
DAM DECT Authentication Module
DB Dummy Burst
DC Dedicated Control (SAP)
Direct Current
DCA Dynamic Channel Allocation
DCCH Dedicated Control Channel
DCE Data Circuit terminating Equipment
DCF Data Communication Function
DCH Dedicated Channel
DCI Downlink Control Information
DCK Depersonalisation Control Key
DCN Data Communication Network
DCS Data Coding Scheme
DCS1800 Digital Cellular Network at 1800MHz
DC-HSDPA Dual Cell HSDPA
DDI Direct Dial In
DDoS Distributed Denial of Service
DECT Digital Enhanced Cordless Telecommunications
DET Detach
DES Data Encryption Standard
DF Dedicated File
DFT Discrete Fourier Transformation
DHCP Dynamic Host Configuration Protocol
DHO Diversity Handover
diff-serv Differentiated services
DISC Disconnect
DL Data Layer
Downlink (Forward Link)
DLCI Data Link Connection Identifier
DLD Data Link Discriminator
DL-SCH Downlink Shared channel
Dm Control channel (ISDN terminology applied to mobile service)
DMR Digital Mobile Radio
DMTF Distributed Management Task Force
DN Destination Network
DNIC Data Network Identifier
DNS Directory Name Service
DO Data Object
DP Dial/Dialled Pulse
DPCCH Dedicated Physical Control Channel
DPCH Dedicated Physical Channel
DPDCH Dedicated Physical Data Channel
DRAC Dynamic Resource Allocation Control
DRB Data Radio Bearer
DRNC Drift Radio Network Controller
DRNS Drift RNS
DRX Discontinuous Reception
DS-CDMA Direct-Sequence Code Division Multiple Access
DSAC Domain Specific Access Control
DSCH Downlink Shared Channel
DSE Data Switching Exchange
DSI Digital Speech Interpolation
DSS1 Digital Subscriber Signalling No1
DTAP Direct Transfer Application Part
DTCH Dedicated Traffic Channel
DTE Data Terminal Equipment
DTMF Dual Tone Multiple Frequency
DTT Digital Terrestrial Television
DTX Discontinuous Transmission
DUT Device Under Test
DwPTS Downlink Pilot Timeslot
E
E-CID Enhanced Cell-ID (positioning method)
E-GGSN Enhanced GGSN
E-HLR Enhanced HLR
E-RAB E-UTRAN Radio Access Bearer
E-SMLC Enhanced Serving Mobile Location Centre
E-TM E-UTRA Test Model
E2E End-to-End
EA External Alarms
EAB Extended Access Barring
EAP Extensible Authentication Protocol
EARFCN E-UTRA Absolute Radio Frequency Channel Number
EBSG Elementary Basic Service Group
ECB Electronic Code-book
ECC Emergency Call Code
Elliptic Curve Cryptography
ECEF Earth Centred, Earth Fixed
EC-EGPRS Extended Coverage EGPRS [deprecated: replaced by EC-GSM-IoT]
ECGI E-UTRAN Cell Global Identifier
EC-GSM-IoT Extended Coverage GSM Internet of Things
ECI Earth-Centered-Inertial
ECM Error Correction Mode (facsimile)
EPS Connection Management
Ec/No Ratio of energy per modulating bit to the noise spectral density
ECSD Enhanced CSD
ECT Explicit Call Transfer supplementary service
ECTRA European Committee of Telecommunications Regulatory Affairs
EDC Error Detection Code byte
EDGE Enhanced Data rates for GSM Evolution
eDRX Extended Discontinous Reception
EEL Electric Echo Loss
EF Elementary File (on the UICC)
EFR Enhanced Full Rate
EFS Error free seconds
EGPRS Enhanced GPRS
EHPLMN Equivalent Home PLMN
EIR Equipment Identity Centre
Equipment Identity Register
EIRP Equivalent Isotropic Radiated Power
EL Echo Loss
EF Elementary File
EM Element Manager
eMBB Enhanced MBB
EMC ElectroMagnetic Compatibility
eMLPP enhanced Multi-Level Precedence and Pre-emption
EMMI Electrical Man Machine Interface
eNB E-UTRAN Node B
evolved Node B
EP Elementary Procedure
EPA Extended Pedestrian A model
EPC Enhanced Power Control
Evolved Packet Core
EPRE Energy Per Resource Element
E-UTRA Evolved UTRA
Evolved Universal Terrestrial Radio Access
E-UTRAN Evolved UTRAN
Evolved Universal Terrestrial Radio Access Network
EPS Evolved Packet System
EPCCH Enhanced Power Control Channel
EPROM Erasable Programmable Read Only Memory
ERP Ear Reference Point
Equivalent Radiated Power
ERR Error
ESD Electrostatic discharge
ETNS European Telecommunications Numbering Space
ETR ETSI Technical Report
ETS European Telecommunication Standard
ETSI European Telecommunications Standards Institute
etu elementary time unit
ETU Extended Typical Urban model
ETWS Earthquake and Tsunami Warning System
EUI End-User Identity
EVA Extended Vehicular A model
EVM Error Vector Magnitude