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Content for  TS 24.628  Word version:  17.0.0

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1  ScopeWord‑p. 6
The present document describes the stage three protocol for basic communication procedures common to several services in the IP Multimedia (IM) Core Network (CN) subsystem when at least one Application Server (AS) is included in the communication. The common procedures are based on stage three specifications for supplementary services.
The present document contains examples of signalling flows for the common basic communication procedures.
The present document is applicable to User Equipment (UE) and Application Servers (AS) which are intended to support the common basic communication procedures.
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2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TS 24.229: "IP Multimedia Call Control Protocol based on SIP and SDP"..
[2]  Void.
[3]  Void.
[4]
RFC 3261:  "SIP: Session Initiation Protocol".
[5]
RFC 3262:  "Reliability of Provisional Responses in the Session Initiation Protocol (SIP)".
[6]
RFC 3960:  "Early Media and Ringing Tone Generation in the Session Initiation Protocol (SIP)".
[7]
ETSI TS 181 005: "Telecommunications and Internet Converged Services and Protocols for Advanced Networking (TISPAN); Service and Capability Requirements".
[8]  Void.
[9]
TS 29.163: "Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks".
[10]  Void.
[11]
ITU-T Recommendation I.112: "Vocabulary of terms for ISDNs".
[12]
RFC 5009:  "Private Header (P-Header) Extension to the Session Initiation Protocol (SIP) for Authorization of Early Media".
[13]
RFC 3515:  "The Session Initiation Protocol (SIP) Refer Method".
[14]
RFC 3725:  "Best Current Practices for Third Party Call Control (3pcc) in the Session Initiation Protocol (SIP)".
[15]
TS 24.607: "Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) using IP Multimedia (IM)Core Network (CN) subsystem; Protocol specification".
[16]  Void.
[17]
ETSI TS 183 028 V2.4.0: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Common Basic Communication procedures; Protocol specification".
[18]
RFC 6228  (May 2011): "Response Code for Indication of Terminated Dialog".
[19]
RFC 3840:  "Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)"
[20]
RFC 4596:  "Guidelines for usage of the Session Initiation Protocol (SIP) Caller Preferences Extension
[21]
RFC 6665  (July 2012): "SIP-Specific Event Notification".
[22]
RFC 7647  (September 2015): "Clarifications for the Use of REFER with RFC6665".
[23]
TS 22.173: "Multimedia Telephony Service and supplementary services".
[24]
TS 22.001: "Principles of circuit telecommunication services supported by a Public Land Mobile Network (PLMN)".
[25]
RFC 4796:  "The Session Description Protocol (SDP) Content Attribute".
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3  Definitions and abbreviationsWord‑p. 7

3.1  Definitions

For the purposes of the present document, the following terms and definitions apply:
announcement:
service related message sent to a user that can be of any type of media e.g. a voice message or a video-clip
communication:
transfer of information between two or more users, entities, processes or nodes according to some agreed conventions
early media:
media sent before a communication is established
in-band announcement:
announcement sent by the network using the bearer established for a communication
Originating Application Server (O-AS):
controlling application server responsible for the services provided to the originating user
Terminating Application Server (T-AS):
controlling application server responsible for the services provided to the terminating user
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3.2  Abbreviations

For the purposes of the present document, the following abbreviations apply:
3pcc
3rd party call control
ACR
Automatic Call Rejection
AS
Application Server
B2BUA
Back-to-Back User Agent
IFC
Initial Filter Criteria
IMS
IP Multimedia Subsystem
ISDN
Integrated Services Digital Network
MGCF
Media Gateway Control Function
MGW
Media GateWay
MRFC
Media Resource Function Controller
MRFP
Media Resource Function Processors
NDUB
Network Determined User Busy
O-AS
Originating Application Server
P-CSCF
Proxy Call Session Control Function
PSTN
Public Switched Telephone Network
S-CSCF
Serving Call Session Control Function
SDP
Session Description Protocol
SIP
Session Initiation Protocol
T-AS
Terminating Application Server
T-MGF
Trunking Media Gateway Function
UDUB
User Determined User Busy
UE
User Equipment
URL
Uniform Resource Locator
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