I have troubles to use Gizmo Area 775 free service with N800. Incoming calls ring on Nokia, I have a popup window to accept or deny a call but that's it - after I click on accept button, I see a "chat"(?) window and greeting message starts to play immediately. I still hear another party voice, but he does not hear me. Period. Looks like outcoming SIP traffic gets cut somewhere in the middle. To make calls to N800, I use my home Comcast phone. I tried to forward ports (UDP 5004,5005, 64064) to N800 directly in router setup, but it doesnot help. As I see here, the problem is in outgoing traffic and I honestly do not know how can I fix it since my router does not block anything that is coming out.
Any thoughts that might help here?