B.2 Example 1 – Service profile for UE originating for a VCC subscriber

24.2063GPPStage 3TSVoice call continuity between Circuit Switched (CS) and IP Multimedia Subsystem (IMS)

The example in table B.2-1 illustrates the case of iFC evaluations for originating sessions in the IM CN subsyetem initiated by a VCC subscriber who has also subscribed to the Connected Line Presentation (COLP) service. Only the example portion of iFC related to origination of an IM session is provided. Other portions of iFCs for evaluations of other SIP methods leading to actions on other application servers – for instance, for 3rd party registration – are not illustrated in this by example.

For this example the illustration of the iFC is provided in an illustrative tabular form.

For this example, the public user identity is user1_public1@home1.net where home1.net is the URI of the home network.

In this example, the first initial filter criteria triggers the S-CSCF to route the initial SIP INVITE request to the domain transfer function of the VSS AS addressed with the public service identity sip:dtfas.vcc.home1.net. When the SIP INVITE request is then returned from that VCC AS, the next initial filter criteria evaluation will cause the S-CSCF to route a SIP INVITE request to a call service application server for the user subscribed COLP service where that application server is addressed with the public service identity sip:colp.ssas.home1.net.

Table B.2-1: Service profile for UE originating for a VCC subscriber

Service Profile (Public Identity user1_public1@home1.net)

Initial Filter Criteria

Priority

0

Service Point Trigger 1

Method:

INVITE

Session Case:

Originating

Application server:

sip:dtfas.vcc.home1.net

Initial Filter Criteria

Priority

1

Service Point Trigger 2

Method:

INVITE

Session Case:

Originating

Application server:

sip:colp.ssas.home1.net