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TR 23.806 (SA2)
Study on
Voice Call Continuity
between CS and IMS

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V7.0.0 (Wzip)  2005/12  153 p.

Rapporteur:  Mr. Bennett, Andy
See also:

This TR contains the results of the feasibility study into the architectural requirements and alternatives for the active voice call continuity between Circuit Switched (CS) domain and the IP Multimedia Subsystem (IMS). Considerations include overall requirements, architectural requirements, evaluation of potential architectural solutions and alternative architectures.

full Table of Contents for  TR 23.806  Word version:   7.0.0


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1  ScopeWord-p. 9
2  References
3  Definitions, symbols and abbreviationsWord-p. 10
4  Overall RequirementsWord-p. 11
5  Architectural Requirements and ConsiderationsWord-p. 12
6  Architecture AlternativesWord-p. 16
6.1  General
6.2  Architecture Reference Model
6.2a  Common procedures
6.2a.1  RegistrationWord-p. 18
6.2a.2  OriginationWord-p. 19
6.2a.3  TerminationWord-p. 27
6.3  Service Continuity Model: IMS Controlled AlternativeWord-p. 39
6.3.1  General Description
6.3.4  OriginationWord-p. 40
6.3.5  Termination
6.3.6  Call Continuity Scenarios
6.3.7  Impact on Supplementary Services
6.3.8  Call Continuity within 3GPP radioWord-p. 57
6.3.8a  Security Impact of Handovers between the CS Domain and the IMS for IMS Controlled MethodWord-p. 58
6.3.8b  Charging Impact of Handovers Between the CS Domain and the IMS Domain for IMS Controlled Method
6.3.9  Analysis of the IMS Controlled modelWord-p. 61
6.3a  Extended VCC IMS controlled architectureWord-p. 62
6.4  Service Continuity Model: Original Domain Control ModelWord-p. 66
6.5  HandOver Application Server for voice continuity between the IMS and CS domain
7  Security
8  ChargingWord-p. 94
9  Comparison of the Architecture Model
10  Conclusion
A  IMS based HO control ModelWord-p. 95
B  Routing Selection Decision LogicWord-p. 105
C  Bearer optimisation for static anchoring of CS calls in IMSWord-p. 107
D  Evaluation CriteriaWord-p. 109
E  "Call Reestablishment on Domain Transfer" for IMS-controlled static anchoringWord-p. 111
F  Service Continuity Model: IMS Controlled Alternative-Dynamic Anchoring ExtensionsWord-p. 118
G  UE Functions - IMS Controlled Model with static anchoringWord-p. 149
H  Operator Deployment ScenariosWord-p. 152
I  Change historyWord-p. 153

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