A better alternative would be to simple return a 180 Ringing, and include an Alert-Info header that references a source of the ringback music you want to play. This puts the issue squarely in the hands of the caller, where it belongs.
Paul
Andreas Bystr�m wrote:
Any suggestions of how to solve personal ringback tone? I want to be able to play media to the caller instead of having the caller generate its own ringback tone. If I have a media server that can play music, and is triggered by the application server, is the simplest (and most "correct") way just to start send to the ip stated in the INVITE? What happens if there are forking, I guess the risk is that it can be several streams sent to the caller? If the offered codecs from the caller cant match the codecs in the invite, is there a way to negotiate this without sending 200 OK?
I have tried to find some call flows describing this case, but hae failed. Does anyone know of where I can find call flows describing personal ringback tone?
Regards, Andreas _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
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