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TS 29.228 (CT4)
IMS Cx and Dx Interfaces – Signalling flows and message contents

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(P) V14.3.0    2017/06    91 p.
(P) V13.4.0    2017/06    88 p.
(P) V12.10.0    2017/06    86 p.
(P) V11.11.0    2015/09    79 p.
(P) V10.8.0    2013/09    75 p.
(P) V9.12.0    2013/09    73 p.
(P) V8.19.0    2013/09    73 p.
(P) V7.18.0    2013/03    65 p.
(P) V6.17.0    2010/12    60 p.
(P) V5.22.0    2010/12    53 p.


Rapporteur:  Ms. Bartolome, Maria-Cruz
See also:  IMS-related TS/TR    


This TS specifies:
  • The interactions between the HSS (Home Subscriber Server) and the CSCF (Call Session Control Functions), referred to as the Cx interface.
  • The interactions between the CSCF and the SLF (Server Locator Function), referred to as the Dx interface.
The IP Multimedia (IM) Subsystem stage 2 is specified in TS 23.228 and the signalling flows for the IP multimedia call control based on SIP and SDP are specified in TS 24.228.

This document addresses the signalling flows for Cx and Dx interfaces.

This document also addresses how the functionality of Px interface is accomplished. The Presence Service Stage 2 description (architecture and functional solution) is specified in TS 23.141.


 

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1   Scope [R5]   PDF-p. 8
2   References [R5]
3   Definitions, symbols and abbreviations [R5]   PDF-p. 9
4   Main Concept [R5]
5   General Architecture [R5]   PDF-p. 11
6   Procedure Descriptions [R5]   PDF-p. 12
6.1   Location management procedures
6.2   User data handling procedures   PDF-p. 32
6.3   Authentication procedures   PDF-p. 35
6.4   User identity to HSS resolution   PDF-p. 39      Up
6.5   Implicit registration   PDF-p. 40
6.6   Download of the Relevant User Profile and Charging Information and Allowed WAF and/or WWSF Identities   PDF-p. 42
6.7   S-CSCF Assignment

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