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TS 24.279CT1
CSICS – Combining CS and IMS Services

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V15.0.0 (PDF)  2018/06  80 p.
V14.1.0  2017/06  80 p.
V13.1.0  2017/06  80 p.
V12.1.0  2017/06  80 p.
V11.2.0  2017/06  80 p.
V10.2.1  2017/06  80 p.
V9.2.0  2017/06  80 p.
V8.4.0  2017/06  80 p.
V7.7.0  2007/12  80 p.

Rapporteur:  Mr. Bakker, John-Luc

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. It 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.

full Table of Contents for  TS 24.279  Word version:   15.0.0

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1  ScopeWord-p. 7
2  References
3  Definitions, symbols and abbreviationsWord-p. 8
4  Common capability information and identifiers for CS-first and IMS-first scenarios
5  Common procedures for CS-first and IMS-first scenariosWord-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 servicesWord-p. 18
9  IMS origination and CSI termination
A (Normative)  Media feature tags defined within the current documentWord-p. 26
B  Example signalling flows for the combining of CS calls with IM sessionsWord-p. 27
C  Change historyWord-p. 77

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