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TS 24.654 (CT1)
Closed User Group (CUG)
using IMS

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V15.0.0 (PDF)  2017/12  23 p.
V14.0.0  2017/03  23 p.
V13.0.0  2015/12  22 p.
V12.0.0  2014/09  22 p.
V11.1.0  2013/03  22 p.
V10.3.0  2013/03  20 p.
V9.4.0  2013/03  20 p.
V8.6.0  2013/03  20 p.


Rapporteur:  Mr. Kreipl, Michael

This TS specifies the stage three Protocol Description of the Closed User Group (CUG) service, based on stage one and two of the ISDN Communication diversion supplementary services. It provides the protocol details in the IP Multimedia (IM) Core Network (CN) subsystem based on the Session Initiation Protocol (SIP) and the Session Description Protocol (SDP).

The CUG service enables users to form groups of members, whose communication profile is restricted for incoming and outgoing communications.