I just ran into an interesting problem. I have a Polycom IP500 that up until today has been rock solid. We have started exploring video conferencing and all of a sudden IP500 goes weird. If I initiate a call to any other sip device, it works fine. But on an incoming call I get no sound. If I remove videosupport=yes from sip.conf everything starts working again. Of the phones that I have, the polycom seems to be the only phone affected by this. Has anyone run into this before? Sean