Stefan Buschmann schrieb: > 1. Ringback tones > > When I connect to my SIP provider and call myself from a phone, the > application receives the call and I can take it using my application. > But while ringing, the caller doesn't hear any ringback tone over the > line. I found the ringback samples in pjsua sample application, but > those only seem to play sound to local device, not back to the line. > Also there are some snippets in it talking about 'early media', but > this is somehow never called in my application (and I also don't get a > ringback signal when using pjsua application). So is there a way to > play a ringback tone to the line, so that the caller hears something > while it is ringing? To answer myself: Sending code 180 on incoming call does the trick :-) The server then creates a tone signalling the caller that the remote side is ringing. pjsua_call_answer(nCallID, 180, NULL, NULL); Does anyone have a clue on the second question? Is there a way to get a callback whenever a connection is lost, either because it is closed or because the internet connection or server is down? Regards, Stefan Buschmann