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TR 23.872 (SA2)
Study on architecture of
IMS-based Customized Alerting Tone (CAT)

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(W-zip) V8.0.0    2008/09    42 p.


Rapporteur:  Mr. Wang, Jing
See also:  CAT-related TS/TR    


This TR intends to investigate the architectural impacts on and potential enhancements to IMS specifications to meet the normative requirements for CAT in IMS domain as specified in TS 22.182:
  • Architecture and procedures to support basic call scenarios for CAT in IMS domain;
  • Interaction with other service, e.g. IMS Multimedia telephony supplementary services;
  • Service provision for roaming subscribers;
  • Interworking between IMS CAT and CS CAT in TR 29.882.
In the end, this study will provide conclusions with respects to what further specification work is required in order to fulfil the requirements for the CAT in IMS domain.


 

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1   Scope   Word-p. 6
2   References
3   Definitions and abbreviations   Word-p. 7
4   Architecture
5   Alternatives
5.1   Alternative 1
5.2   Alternative 2 Forking model   Word-p. 16
5.3   Alternative 3 (Content Indirection)
5.4   CAT Control
5.5   IMS CAT service notification   Word-p. 33
5.6   IMS CAT copy
5.7   CAT selection by the called party   Word-p. 35
6   Assessment   Word-p. 36
7   Interaction with other features      Up
8   Interworking with CS domain   Word-p. 37
9   Conclusion      Up
A   Change history   Word-p. 42

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