I have just installed asterisknow and got it working internal on my LAN at home. I have tested it with a soft phone on the pc and my nokia n95 cell phone and I can make calls between them.
When I tried with my cell phone from an external internet connection the phone indicates that it’s registered with the asterisk server, but when I’m trying to make a call to a local extension on the server it won’t work. I hear nothing in the phone and after a while the call gets disconnected.
The server is behind a NAT so I have tried to open port 5060 and forward it to the internal ip of the asterisk server, but the only thing that is working is to register the phone. Do I need to open and forward some more ports? Or is there something else I have missed?