Hello, I have a small and basic VoIP server application written, which I want to run on a Raspberry Pi. I successfully compiled PJSIP and my application for the Raspberry, though every time I start my application, and a conference object is initialized, I'm getting the following error: Error Code: 420006 - Unable to find default audio device (PJMEDIA_EAUD_NODEFDEV) This is strange, as portaudio seems to have found a couple of sound devices: 11:24:29.076 pa_dev.c PortAudio sound library initialized, status=0 11:24:29.077 pa_dev.c PortAudio host api count=2 11:24:29.079 pa_dev.c Sound device count=4 11:24:29.081 conference.c Creating conference bridge with 4 ports 11:24:29.083 Master/sound Using delay buffer with WSOLA. Also 'aplay -l' lists one audio device: $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 To meet all requirements of PJSIP I installed the following libraries before I compiled PJSIP: libasound2 libasound2-dev libasound2-plugins alsa-utils libportaudio2 portaudio19-dev On my development platform my application runs very well. My development platform: $ uname -a Linux 3.5.0-34-generic #55~precise1-Ubuntu SMP i686 i686 i386 GNU/Linux Does anyone might have an idea what could be possibly missing? Regards