TS 24.206
Voice Call Continuity between Circuit Switched (CS) and IP Multimedia Subsystem
V7.5.0 (PDF)
2008/06 122 p.
- Rapporteur:
- Mr. Drage, Keith
full Table of Contents for TS 24.206 Word version: 7.5.0
1 Scope p. 6
2 References p. 6
3 Definitions, symbols and abbreviations p. 7
3.1 Definitions p. 7
3.2 Abbreviations p. 7
4 Overview of voice call continuity between the Circuit-Switched (CS) domain and the IP Multimedia (IM) Core Network (CN) subsystem p. 8
5 Functional entities p. 10
5.1 Introduction p. 10
5.2 User Equipment (UE) p. 10
5.3 Media Resource Function Controller (MRFC) p. 10
5.4 Application Server (AS) p. 10
5.5 Media Gateway Control Function (MGCF) p. 10
6 Roles for registration in the IM CN subsystem p. 10
7 Roles for call origination p. 11
8 Roles for call termination p. 15
9 Roles for domain transfer of a call from the CS domain to the IM CN subsystem p. 18
9.1 Introduction p. 18
9.2 VCC UE p. 18
9.3 VCC application p. 19
9.3.1 Distinction of requests sent to the VCC application p. 19
9.3.2 Domain transfer in the IM CN subsystem p. 19
9.4 MGCF p. 20
10 Roles for domain transfer of a call from the IM CN subsystem to the CS domain p. 20
A Example signalling flows of voice call continuity between the Circuit-Switched (CS) domain and the IP Multimedia (IM) Core Network (CN) subsystem p. 23
A.1 Scope of signalling flows p. 23
A.2 Introduction p. 23
A.3 Signalling flows for registration and exchange of mobility status information p. 24
A.4 Signalling flows for call origination p. 24
A.4.1 Introduction p. 24
A.4.2 Signalling flows for origination from the IM CN subsystem p. 25
A.4.3 Signalling flows for origination from CS domain p. 30
A.4.4 Signalling flows for origination from CS domain, using ISUP call diversion mechanisms p. 38
A.4.5 Signalling flows for origination from CS domain with no anchoring p. 46
A.4.6 Signalling flows for origination from CS domain for a user that is not registered within the IM CN subsystem p. 47
A.5 Signalling flows for call termination p. 52
A.5.1 Introduction p. 52
A.5.2 Signalling flows for termination to the IM CN subsystem p. 52
A.5.3 Signalling flows for termination to CS domain p. 58
A.5.4 Signalling flows for termination directed to IM CN subsystem (coming from the CS domain) (using CAMEL) p. 63
A.5.5 Signalling flow for termination directed to CS domain (coming from the CS domain) p. 70
A.5.6 Signalling flows with call termination delivery attempt failure to the IM CN subsystem p. 80
A.5.7 Signalling flow for termination directed to CS domain, unsuccessful delivery, redirect to IM CN Subsystem p. 82
A.5.8 Signalling flows for termination from CS domain with no anchoring (using CAMEL) p. 95
A.6 Signalling flows for CS domain to IM CN subsystem transfer p. 96
A.6.1 Introduction p. 96
A.6.2 Signalling flows for CS domain to IM CN subsystem transfer p. 97
A.6.3 Signalling flows for unsuccessful CS domain to IM CN subsystem transfer p. 104
A.7 Signalling flows for IM CN subsystem to CS domain transfer p. 105
B Example of filter criteria p. 118
B.1 Introduction p. 118
B.2 Example 1 - Service profile for UE originating for a VCC subscriber p. 118
B.3 Example 2 - Service profile for UE terminating for a VCC subscriber p. 119
$ Change history p. 121
