I have registered two clients within two different servers which pings each other. The dial plan I put in extensions.conf is very simple:
[incoming] exten => 600,1,Dial(SIP/ab@fedora)
but when I lauch an ethereal whith a sip filter, I notice that fedora respond the other server(where the dialer is registered) with:
404: not found, although that ab declare that it is registered.