| 摘要 |
A method and apparatus for setting up a ringback media session between a calling party and a ringback server. A signaling proxy may receive a call setup message seeking to set up a call from the calling party to a called party and responsively forward the call setup message from the signaling proxy to the called party. Thereafter, the signaling proxy may receive from the called party a reply to the call setup message indicating that the call is not yet answered by the called party. In response, the signaling proxy may send a call-forwarding initiation message to the ringback server to initiate forwarding of the call to the ringback server and setup of a ringback media session between the ringback server and the calling party. That message may include a designation of particular media that the ringback server should provide to the calling party, based on subscriber profile data.
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