3GPP TS24.229 PDF

This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification. Descriptor and Table of Contents (1 of 31) for 3GPP TS – IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session. ITU-T A.5 justification information for referenced document 3GPP TS V [] draft-holmberg-sipcore-auth-id (October ): “Authorization.

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ITU-T work programme

IP Multimedia services provide a dynamic combination of voice, video, messaging, data, etc. By growing the number of basic applications and the media which it is possible to combine, the number of services offered to the end users will grow, and the inter-personal communication experience will be enriched. IMS provides key features to enrich the end-user person-to-person communication experience through the use of standardised IMS Service Enablers, which facilitate new rich person-to-person client-to-client communication services as well as person-to-content client-to-server services over IP-based networks.

Whilst SIP was created as a 33gpp protocol, IMS allows operators and service providers to control user access to services and to charge users accordingly. This applies both on the originating and terminating sides of the IMS. These supplementary services will be defined in separate specifications although they will impact upon core specifications such as TS The P-Asserted Identity is an identity that is used among trusted SIP entities, typically intermediaries, to carry the identity of the user sending a SIP message as it was verified by authentication.

In the example of FIG. It is possible for the AS logic to require the setting up of a new session. 3pgp

In this case, the identity of the origin, i. The call flow is as follows: In the scenario illustrated in FIG. Referring again to FIG. This problem arises with messages other than INVITE, including, for example, other initial request messages and standalone messages.

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ITU-T A.5 reference justification

However, this is unlikely to be accepted by operators who will prefer to leave the P-Asserted Identity unchanged from end-to-end. Other solutions to this problem must therefore be sought.

According to a first aspect of the present invention there is provided a method of handling a Session Initiation Protocol communication within an IP Multimedia Subsystem, where the communication is subject to a call forwarding operation handled by a Session Initiation Protocol Application Server, the method comprising: Said step of processing preferably comprises determining whether any restrictions are placed on the user equipment identified by the original R-URI, and identifying IFCs for this user equipment and carrying out further processing steps as defined by the IFCs.

Preferably, the P-Asserted Identity is the same in both the message received at the S-CSCF and the message returned from the Application server, this identity identifying the originating user equipment.

FIELD OF THE INVENTION

According to a second aspect of the present invention there is provided a Session Initiation Protocol Application Server of an IP Multimedia Subsystem having processing means for implementing a call forwarding operation by modifying a received message to include a forwarding indicator and a R-URI identifying the USER Equipment to which the call is to be forwarded. According to a fourth aspect of the invention there is provided a method of handling a Session Initiation Protocol communication within an IP Multimedia Subsystem, where the communication is subject to a call forwarding operation handled by a Session Initiation Protocol Application Server, the method comprising: According to a fifth aspect of the invention there is provided a method of handling a Session Initiation Protocol communication within an IP Multimedia Subsystem, where the communication is subject to a call forwarding operation handled by a Session Initiation Protocol Application Server, the method comprising: According to a sixth aspect of the invention there is provided a method of handling a Session Initiation Protocol communication within an IP Multimedia Subsystem, where the communication is subject to a call forwarding operation handled by a Session Initiation Protocol Application Server, the method comprising: The invention is applicable in particular to Session Initiation Protocol initial request messages, e.

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In particular, the P-Asserted Identity is unchanged in order to satisfy operator requirements. This may be mapped against the ODI. It will be appreciated by the person of skill in the art that various modifications may be made to the embodiments described above without departing from the scope of the present invention.

A SumoBrain Solutions Company. Search Expert Search Quick Search. United States Patent Click for automatic bibliography generation. Box Dallas TX The invention claimed is: The method according to claim 1, wherein said step of processing the SIP message according to the originating procedure comprises determining whether any restrictions are placed on the second user equipment identified by the original R-URI, and identifying initial filter criteria IFCs for the second user equipment and carrying out further processing steps as defined by the IFCs.

Call forwarding in an IP multimedia subsystem (IMS) – Telefonaktiebolaget LM Ericsson (publ)

The method according to claim 1, wherein said forwarding indicator is added to the message route header of the SIP message received at the SIP 3gp Server. The method according to claim 1, wherein said SIP message is a standalone message.

The method according to claim 7, wherein said forwarding indicator is added to a route header of the SIP message. Preferably, said forwarding indicator is contained in the route header. Four alternative solutions are proposed here. Next Patent Method, system, and Request redirection handling in IMC.