For the purposes of the present document, the terms and definitions given in
TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in
TR 21.905.
ICE lite:
The lite implementation of the Interactive Connectivity Establishment (ICE) specified in IETF RFC 8445 [69].
Full ICE:
The full implementation of the Interactive Connectivity Establishment (ICE) specified in IETF RFC 8445 [69].
NAS signalling:
layer 3 signalling carried over CS domain access between the UE and MSC Server as defined in
TS 24.008.
For the purposes of the present document, the following terms and definitions given in
TS 24.629 apply:
transferee
transferor
transfer target
For the purposes of the present document, the abbreviations given in
TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905.
3PCC
3rd Party Call Control
ACR
Anonymous Communication Rejection
BAIC
Barring of All Incoming Calls
BAOC
Barring of All Outgoing Calls
BIC-Roam
Barring of Incoming Calls when Roaming outside the home PLMN country
BOIC
Barring of Outgoing International Calls
BOIC-exHC
Barring of Outgoing International Calls except those directed to the Home PLMN Country
CB
Communication Barring
CCBS
Completion of Communication to Busy Subscriber
CCNL
Completion of Communications on Not Logged-in
CCNR
Completion of Communications on No Reply
CD
Communication Deflection
CDIV
Communication DIVersion
CFNL
Communication Forwarding on Not Logged-in
CFNR
Communication Forwarding No Reply
CFNRc
Communication Forwarding on subscriber Not Reachable
CFU
Communication Forwarding Unconditional
CONF
CONFerence
CS
Circuit Switched
CS-MGW
Circuit Switched Media Gateway
ECN
Explicit Congestion Notification
ECT
Explicit Communication Transfer
EVS
Enhanced Voice Services
GRUU
Globally Routable User Agent URI
HOLD
communication HOLD
ICB
Incoming Communication Barring
ICE
Interactive Connectivity Establishment
ICS
IM CN subsystem Centralized Services
IMS-MGW
IP Multimedia Subsystem-Media Gateway Function
IuFP
Iu Framing Protocol
IVAS
Immersive Voice and Audio Services
MboIP
Mb over IP
MRFP
Media Resource Function Processor
MPS
Multimedia Priority Service
NAS
Non Access Stratum
OCB
Outgoing Communication Barring
OIP
Originating Identification Presentation
OIR
Originating Identification Restriction
RTCP
RTP Control Protocol
SDPCapNeg
SDP Capability Negotiation
TDM
Time Division Multiplex
TIP
Terminating Identification Presentation
TIR
Terminating Identification Restriction