Content for TR 23.872 Word version: 8.0.0
1 Scope p. 6
This study intends to investigate the architectural impacts on and potential enhancements to IMS specifications to meet the normative requirements for CAT in IMS domain as specified in TS 22.182:
- Architecture and procedures to support basic call scenarios for CAT in IMS domain;
- Interaction with other service, e.g. IMS Multimedia telephony supplementary services;
- Service provision for roaming subscribers;
- Interworking between IMS CAT and CS CAT in TR 29.882.
2 References p. 6
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]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 22.182: "Customized Alerting Tones (CAT) Requirements".
[3]
TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2".
[4]
TS 24.229: "Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
[5]
RFC 3959: "The Early Session Disposition Type for the Session Initiation Protocol (SIP)".
[6]
RFC 3960: " Early Media and Ringing Tone Generation in the Session Initiation Protocol (SIP)".
[7]
TS 23.218: "IP Multimedia (IM) session handling; IM call model; Stage 2".
[8]
RFC 2616: " Hypertext Transfer Protocol -- HTTP/1.1".
[9]
RFC 3262: " Reliability of Provisional Responses in Session Initiation Protocol (SIP)".
[10]
TS 26.234: "Transparent end-to-end Packet-switched Streaming Service (PSS) ".
[11]
3GPP2 X.S0055: "MMD Supplementary Services ".
[12]
RFC 2833: "RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals".
[13]
RFC 3841: "Caller Preferences for the Session Initiation Protocol (SIP)".
[14]
RFC 4483: "A Mechanism for Content Indirection in Session Initiation Protocol (SIP) Messages".
[15]
TS 29.163: "Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks".
3 Definitions and abbreviations p. 7
3.1 Definitions p. 7
For the purposes of the present document, the terms and definitions given in TR 21.905 apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
3.2 Abbreviations p. 7
