I have Epigy quadro with external remote snom phone. When the snom register with the quadro the binding ip of the extension is the remote local lan ip (like 192.168.1.x.x) and don’t take the wan of the remote ip. The call doesn’t pass to the snom phone because the quadro doesn’t know the snom public ip. Which will be the setting of the snom phone to send the contact wan ip to the epigy? Or How I can do firewall traversal using the discover global ip address like x-lite function do?