Hi, I've setup 3cx server on a public ip. I can connect with my nokia n95 and receivce calls. If someone calls me, there is no problem. But if I call to external number I hear nothing. The receiver of my call can hear me. I know it has to do with this: [CM103001] Call(14): Created audio channel for Ext.100 (192.168.1.82:49152) with Media Server (18.104.22.168:9046) I can't configure stun in my mobile phone. If I use other voip providers on my mobile phone, I don't have this problem. Hope someone could help me. Thank you!