Only outbound calls are dropping after 30 seconds

[AD17]

I am a newbie to this and I think I have bitten off more than I can handle.
I have searched and reviewed the forum and a lot of the terminology is still beyond my scope.
From my readings, it appears to be a NAT issue if the outbound calls are being dropped after 30 secs.
Incoming calls are no problem.
I have installed the fusion behind a pfsense and followed the instructions.
Also, I am on voip.ms
Not sure where to look next.
Even if you post a link to where I should look in the forums would be appreciated.

 

[Adrian Fretwell]

Most of the time when this happens you are missing the ACK following the 200 OK associated with the INVITE. You are probably correct in your assumption that it is NAT related. Get some packet captures and check for RFC1918 IP addresses in the Contact headers.

 

[fusionpbxnoaudio]

SOLVED - 32 second call disconnection

I know there are many posts with this issue, I have tried all that is possible but it is still disconnecting. Let me explain my setup. I have a simple full cone NAT on a router which has an external IP and the internal LAN is 192.xx.xx.xx Fusion PBX resides on a computer inside the LAN which...

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