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TS 24.206 (CT1)
Voice Call Continuity (VCC) between Circuit Switched (CS) and IMS – Stage 3

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V7.5.0 (PDF)  2008/06  122 p.


Rapporteur:  Mr. Drage, Keith
See also:  VCC-related TS/TR

Voice call continuity allows users to move between the CS domain and the IP Connectivity Access Network (e.g., WLAN interworking) with home IM CN subsystem functionality.

This TS provides the protocol details for voice call continuity between the IP Multimedia (IM) Core Network (CN) subsystem based on the Session Initiation Protocol (SIP) and the Session Description Protocol (SDP) and the protocols of the 3GPP Circuit-Switched (CS) domain (CAP, MAP, ISUP, BICC and the NAS call control protocol for the CS access).

This document makes no VCC specific enhancements to SIP, SIP events or SDP, beyond those specified in TS 24.229.

This TS is applicable to User Equipment (UEs), Application Servers (AS) and Media Gateway Control Functions (MGCF) providing voice call continuity capabilities.

Note:  No upgrade to Rel-8 due to change of approach to VCC.


 

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1  ScopePDF-p. 6
2  References
3  Definitions, symbols and abbreviationsPDF-p. 7
4  Overview of voice call continuity between the Circuit-Switched (CS) domain and the IP Multimedia (IM) Core Network (CN) subsystemPDF-p. 8
5  Functional entitiesPDF-p. 10
6  Roles for registration in the IM CN subsystem
7  Roles for call origination
8  Roles for call terminationPDF-p. 15
9  Roles for domain transfer of a call from the CS domain to the IM CN subsystemPDF-p. 18

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