Hi Samuel 2008/5/24 Samuel Vinson <samuelv at laposte.net>: > Could you explain me, how pjsip works when stereo is active or not ? > I thought the media part is the same, and stereo option duplicates after > acquiring step. I think so, the media part is the same. Before there is any port connected to sound device/master port in the conference bridge, as you said "start, quit => crash", mono or N-channels is, CMIIW, a matter of opening the sound device and conference settings (which may affect size of memory allocation), no resampling or stereo specific processing done. Moreover, since in the higher clock rates the crash/reboot problem didn't occurred (I couldn't recall any special treatment for 8000Hz), this strange problem may be around sound device things. Regards, nanang