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TS 24.182 (CT1)
IMS Customized Alerting Tones (CAT) – Protocol specification

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V14.1.0 (PDF)    2017/12    147 p.
V13.1.0    2015/06    145 p.
V12.1.0    2015/03    144 p.
V11.2.0    2015/03    144 p.
V10.5.0    2015/03    144 p.
V9.10.0    2015/03    145 p.
V8.7.0    2011/06    94 p.

Rapporteur:  Mr. Lauster, Reinhard
See also:  CAT-related TS/TR    

This TS provides the protocol details for the Customized Alerting Tones (CAT) service in the IP Multimedia (IM) Core Network (CN) subsystem based on the requirements from TS 22.182. The CAT service is an operator specific service by which an operator enables the subscriber to customize the media which is played to the calling party during alerting of the called party.

for V14:    Correction of the procedure for stopping/restarting the provision of CAT media


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1   Scope [R8]   PDF-p. 6
2   References [R8]
3   Definitions and abbreviations [R8]   PDF-p. 7
4   Customized Alerting Tones (CAT) [R8]
4.1   Introduction
4.2   Description
4.3   Operational requirements   PDF-p. 8
4.4   Syntax requirements
4.5   Signalling procedures
4.6   Interaction with other services   PDF-p. 20
4.7   Parameter values (timers)
4.8   Service configuration
A   Signalling flows [R8]   PDF-p. 24      Up
A.1   Scope of signalling flows
A.2   Void
A.3   CAT forking model signalling flows
A.4   CAT early session model signalling flows   PDF-p. 40
A.5   CAT Gateway model signalling flows   PDF-p. 61
A.6   Interworking with CS domain   PDF-p. 130
B  (Normative)   SDP a=content attribute "" value [R9]   PDF-p. 142      Up
C   Change history   PDF-p. 143

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