The SIP B2BUA Example is JAIN SLEE 1.1 Application which handles SIP sessions between a SIP UAC and UAS, through two different "legs", one per session party. In the originating session leg the application acts as UAS and processes the request as a UAC to the destination end, handling the signaling between end points back-to-back.Each side of a B2BUA operates as a standard SIP network element as specified in RFC 3261, the official SIP specification. The diagram below depicts the application behavior for all SIP messages exchanged by the session parties.
SIP B2BUA Example Functionality