Hi all, we have dedicated serveur which have only 1 network card. this network card is link directly to net. ip addresse ip external add. so the ip add of pbx is a loopback network card. my problem is with tunnel. when i said to my tunnel to listen on local ip -> finaly external ip, my 3cx phone connect but there is no audio. when i said to tunnel on 3cx phonse system to liste local ip 192.168.2.1 (my loppback ip) 3cx phone can connect.