Hi, I'm experiencing brief pauses during my calls: 0.5-1.0 sec of silence if call continues for more than a few minutes. I'm sure that problem is in the phone (a cheap ATCOM AT-320 with latest SIP firmware) but I'd like to diagnose better. During a little test, it seems that there is no problem with IAX2 firmware (but there are others... I'm not able to transfer and pickup calls...) Can I try different codec/jitterbuffer/othertrick? Thanks Mimmus