Hi Benny, hi all, we try to run our VoIP-Client (based on PJSIP) under Vista and got extremely bad speech quality and a high jitter. We run tests with pjsua and got the same result. Have anybody an idea where this problems can came from? Many thanks in advance Peter -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal f?r Modem und ISDN: http://www.gmx.net/de/go/smartsurfer