Hello, I?m developing an iOS Voip App based on PJSIP which makes an outbound call. When the App is "in call" the iPhone can still receive incoming calls. iOS handles this by taking away all audio in- and outputs from the application and sending a broadcast message (?OnAudioSessionInterruptionNotification"). In the case an incoming call is received I would like to let PJMEDIA generate a tone (using the tone generator) and play this to the callee. I?ve got everything in place; the tone generator plays the tone, the event is captured, the conference is configured correctly. But for some reason the callee does not hear anything. I've tested the generated tone by injecting it in the conference during an active call, but while I?d expect only the microphone would be forcefully removed from the conference by iOS when a call comes in, I would still expect the generated tone to be played out. Even reconnecting the tonegen to the conference (pjsua_conf_connect) and restarting the conference (ca_stream_start) does not solve the issue Does anybody know what causes this behaviour? Abd even better; how to make the tone generator play out to the callee? Could it be that PJMEDIA relies on some sample clock of iOS which is not available anymore when a call comes in? I?m using PJSIP v2.1.0 and using coreaudio_dev.m (rev.4617) with some alterations regarding the handling of interruptions. Any help is appreciated! Best regards, Tom
