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Content for  TS 24.294  Word version:  16.0.0

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1  ScopeWord‑p. 9
The present document describes the I1 interface between IMS Centralized Services (ICS) UE and Service Centralization and Continuity (SCC) Application Server (AS).
This specification defines a new application layer protocol over I1 interface, specifies the interaction between the ICS UE and the SCC AS including session control procedures and supplementary services control procedures.
The protocol is intended to be independent of the transport-layer protocol used so it can be applied to a number of technologies that need different transport-layer protocols.
The overall ICS architecture is specified in TS 23.292.
The procedures for delivery of IMS Service Continuity that do not use the I1 protocol are specified in the document TS 24.237.
The present document is applicable to User Equipment (UE) and Application Servers (AS) which are intended to support the IMS centralized services.
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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]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.292: "IP Multimedia Subsystem (IMS) Centralized Services; Stage 2".
[3]
TS 24.008: "Mobile radio interface layer 3 specification; Core Network protocols; Stage 3".
[4]
TS 24.090: "Unstructured Supplementary Service Data; Stage 3".
[5]
TS 24.292: "IP Multimedia (IM) Core Network (CN) subsystem Centralized Services (ICS); Stage 3".
[6]
RFC 3261  (June 2002): "SIP: Session Initiation Protocol".
[7]
TS 23.237: "IP Multimedia Subsystem (IMS) Service Continuity; Stage 2".
[8]
RFC 3323  (November 2002): "A Privacy Mechanism for the Session Initiation Protocol (SIP)".
[9]
RFC 3325  (November 2002): "Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks".
[10]
TS 23.009: "Handover Procedures".
[11]
TS 25.413: "UTRAN Iu interface Radio Access Network Application Part (RANAP) signalling".
[12]
TS 24.229: "IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
[13]
TS 24.237: "IP Multimedia Subsystem (IMS) Service Continuity; Stage 3".
[14]
TS 29.002: "Mobile Application Part specification; Stage 3".
[15]
TS 23.003: "Numbering, addressing and identification".
[16]
RFC 3629  (2003): "UTF-8, a transformation format of ISO 10646".
[17]
TS 23.218: "IP Multimedia (IM) session handling IM Call model, Stage 2".
[18]
TS 24.173: "IMS Multimedia Telephony Communication Service and Supplementary Services; Stage 3".
[19]
TS 23.038: "Alphabets and language-specific information".
[20]
TS 23.078: "Customised Applications for Mobile network Enhanced Logic (CAMEL); Stage 2".
[21]
TS 24.147: "Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3".
[22]
TS 24.605: "Conference (CONF) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification".
[23]
TS 24.615: "Communication Waiting (CW) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification".
[24]
TS 24.080: "Mobile radio interface layer 3 supplementary services specification Formats and coding".
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3  Definitions and abbreviationsWord‑p. 10

3.1  Definitions

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.
For the purposes of the present document, the following terms and definitions given in TS 23.292 apply:
ICS UE
SCC AS
For the purposes of the present document, the following terms and definitions given in TS 23.237 apply
Access Transfer
Service Control Signalling Path
Session Transfer Identifier (STI)
For the purposes of the present document, the following terms and definitions given in TS 24.292 apply:
PSI DN
For the purposes of the present document, the following terms and definitions given in TS 24.229 apply:
default public user identity
Stable I1 Session:
An session which is setup by the ICS UE using the CS bearer, and for which service control via the I1 interface is applicable.
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3.2  AbbreviationsWord‑p. 11
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.
ICS
IMS Centralized Services
SCC AS
Service Centralization and Continuity Application Server
STI
Session Transfer Identifier
USSD
Unstructured Supplementary Service Data
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