More info seems like the culprit is AudioUnitInitialize returning -12985. What does this error code mean? Can't the audio unit be initialized while the app is in the background ? Is that an apple restriction? Sent from my iPhone On 08/03/2011, at 11:00 AM, Joseph Rukshan Fonseka <rukshanf at optusnet.com.au> wrote: > I'm looking at being able to auto answer the incoming sip call while the VoIP client is in the background. The auto answer works great while in the foreground. However when in te background I get this in the log.. > "Core audio stopped" and then seems like it tries to open the audio in different rates ie. PCM8000, PCM44100 etc etc . Eventually says unable to open sound device. Any idea what's going wrong? > > I already have voip and audio in my plist. > > Sent from my iPhone > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org