Hi, I have a new system and I turned up MBG, made the firewall changes, registed and configured a SIP device and everything worked just fine. When I hookup a MiNet phone, 5320e to be exact, I can register the phone without any issues and make a call but there is no audio at all. I checked with the firewall team today and we did a full allow and I was still not able to hear any audio. The MBG is in Server Only mode and has a public IP NAT'd to its internal IP for the firewall traversal. Any ideas?