Hi
I have managed to
set up our Asterisk server and can successfully make and receive calls via an
external Asterisk server service provider and our IAX.conf
file.
I can make SIP to
SIP calls to a remote machine on a fixed IP.
I cannot make SIP to
SIP calls from one internal phone behind our NAT firewall to another internal
phone behind our NAT firewall.
The call is received
and the recipient can answer it, but no voice nor echo can be
heard.
Any ideas would be
greatly appreciated.
Regards
James
