I’ve been using an asterisk 1.6 server for about a year without trouble. Since last wednesday, when I upgraded to 1.8, I’m facing troubles. The voice of the caller is not transmited for internal calls (between two extensions managed by my server) but it works fine for other incoming or outgoing calls (which involve only one extension managed by my server).
I have a dozen extensions split on 3 sites. The problem occurs while calling from site A to site B but also from site A to site A.
The asterisk server is alone in the internet with a public static IP. All phones have a private IP and are natted. The routers have a public static IP.