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TS 24.279 (CT1)
CSICS – Combining CS and IMS Services – Stage 3

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(P) V14.1.0    2017/06    80 p.
(P) V13.1.0    2017/06    80 p.
(P) V12.1.0    2017/06    80 p.
(P) V11.2.0    2017/06    80 p.
(P) V10.2.1    2017/06    80 p.
(P) V9.2.0    2017/06    80 p.
(P) V8.4.0    2017/06    80 p.
(P) V7.7.0    2007/12    80 p.


Rapporteur:  Mr. Allen, Andrew
See also:  CSICS-related TS/TR    


This TS provides the technical realisation for the combination of Circuit Switched calls and IM sessions when using them simultaneously between the same two users.

This TS describes the use of CS and IM services in combination, using the existing procedures that have been defined for CS and IMS. It includes the necessary function as adding an IM session to an ongoing CS call, adding a CS call to an ongoing IM session, supplementary services as they relate to CSICS and supporting capability exchange.

This TS is applicable to UE and Application Servers providing for the combination of Circuit Switched calls and IM sessions.


 

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1   Scope   PDF-p. 7
2   References
3   Definitions, symbols and abbreviations   PDF-p. 8
4   Common capability information and identifiers for CS-first and IMS-first scenarios
5   Common procedures for CS-first and IMS-first scenarios   PDF-p. 10
6   Combining a CS call with an existing IM session
7   Combining an IM session with an existing CS call
8   Interaction with supplementary services

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