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TS 24.642 (CT1)
Completion of Communications to Busy Subscriber (CCBS) and
Completion of Communications by No Reply (CCNR)
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V15.0.0 (PDF)  2017/12  55 p.
V14.0.0  2017/03  57 p.
V13.0.0  2015/12  58 p.
V12.0.0  2013/09  57 p.
V11.4.0  2013/06  57 p.
V10.7.0  2013/06  57 p.
V9.10.0  2013/06  50 p.
V8.11.0  2013/06  43 p.

Rapporteur:  Mr. Kreipl, Michael

This TS specifies the stage three Protocol Description of the Completion of Communications to Busy Subscriber (CCBS) service and the Completion of Communication on no Reply (CCNR) service, based on stage one and two of the ISDN 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 Completion of Communications to Busy Subscriber CCBS service enables user A, encountering a busy destination B, to have the communication completed without having to make a new communication attempt when the destination B becomes not busy.
The Completion of Communications on No Reply CCNR supplementary service enables user A, encountering a destination B which does not answer the communication (No Reply), to have the communication completed without having to make a new communication attempt when the destination becomes not busy after having initiated an activity.

full Table of Contents for  TS 24.642  Word version:   15.0.0

 

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1  ScopeWord-p. 7
2  ReferencesWord-p. 8
3  Definitions and abbreviations
4  Completion of Communications to Busy Subscriber (CCBS), Completion of Communications on No Reply (CCNR) and Completion of Communications on Not Logged-in (CCNL)Word-p. 10
4.1  Introduction
4.2  Description
4.3  Operational requirementsWord-p. 11
4.4  Coding requirements
4.5  Signalling requirementsWord-p. 12
4.5.1  Activation/deactivation
4.5.2  Registration/erasure
4.5.3  Interrogation
4.5.4  Invocation and operation
4.5.4.1  Actions at the originating UE
4.5.4.2  Actions at the originating ASWord-p. 13
4.5.4.3  Actions at the terminating AS
4.5.4.4  Actions at the terminating UEWord-p. 24
4.5.5  SIP specific Event Notifications
4.6  Interaction of Call-Completion with other services
4.7Void
4.8  Parameter values (timers)
4.9  Communication completion configuration XCAP application usage [R9]Word-p. 28
A  Signalling flowsWord-p. 31
B  Example of filter criteriaWord-p. 50
C  IANA Registration templates [R9]Word-p. 51
D  Change historyWord-p. 53

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