On Thu, Jun 27, 2013 at 2:31 PM, Rajat Jain <rajatjain at drishti-soft.com> wrote: > Some other application has taken control of your sound devices. > Try closing those application (even media player) and restart PJSUA. > Are you operating with Pulseaudio ? If you are operating with pulseaudio, then you should be able to use "pulse" or "default" sound card. If you are operating barely on top of ALSA, then you might have to make sure that only one application is accessing the sound card. Amar-Akshat