On Fri, Oct 8, 2010 at 9:21 AM, Ming <ming at teluu.com> wrote: > This is (supposed to be) an old problem with Mac OS 10.6 and PA (see > ticket #516 http://trac.pjsip.org/repos/ticket/516). Does this also > happen when you're using the CoreAudio backend (instead of PA)? This problem had been fixed about three years ago and then reappeared again, as far as I remember, after the release of Mac OS X 10.6 or after releasing 1.x branch of PJSIP. Alexei