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Content for  TR 21.905  Word version:  17.0.0

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4  Abbreviations

4.0  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

4.A  AWord‑p. 35
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
Up

4.B  BWord‑p. 36
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
Up

4.C  CWord‑p. 37
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
Up

4.D  DWord‑p. 39
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
Up


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