Hi at all, i have a problem with pjsua version 2 on iOS. I use TLS and TCP to make a call. Calls and sound quality are fine but i have this problem: When the user close a call i receive the following error: ERROR: [AVAudioSession Notify Thread] AVAudioSessionPortImpl.mm:52: ValidateRequiredFields: Unknown selected data source for Port iPhone Microfono (type: MicrophoneBuiltIn) I think that this error is linked with another problem that involve my app. Sometimes when i put my app in background i get a red status bar on iPhone ( like a audio recording o call is in progress ). What i can do fix or dept debug this problem ? Thanks in advance. Pasquale. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20141020/732bb9a4/attachment.html>