WebSphere brand IBM WebSphere Presence Server, Version 7.0

Configuring for integration with external sources

You can configure Presence Server to gather presence information from external sources including the Serving-Call/Session Control Function (S-CSCF).

Presence Server provides a mechanism for gathering presence information from SIP external sources and registration information from S-CSCF.

The external SIP server, also referred to as a SIP provider or SIP external source, is addressed only when a subscriber is seeking information about a presentity. As a result, you can configure Presence Server so that the presence information for the presentity is collected only when it is required.

The information received from external sources is stored and handled using the same mechanism used for incoming PUBLISH requests. As a result, this additional information is included in the composed full document for the presentity and can be accessed by all subscribers for the presentity.

A commonly used example of a SIP external source is the Serving-Call/Session Control Function (S-CSCF).




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