On Fri, Feb 5, 2010 at 5:35 PM, Michael <michael_zurich at yahoo.com> wrote: > Hi Benny, > > have looked at the traces I sent? We looked with Aastra engineers at the trace and they saw that RTCP seams to come early. We tested on several computers and saw that it sometimes works. It looks like a threading/timing problem in pjsip? > > The hardware phones are Aastra IP-Phones sending media directly to PC with pjmedia stack. > I haven't looked at your trace yet, sorry. But we do send RTCP early by design, it's an RTCP SDES packet. Cheers Benny