I would like to understand more about the SIP port control where I have 1 phone behind the firewall and 2 phones (on different IP addresses) out on the internet.
I’m not sure what I see in this overview and I’m not sure if I understand the column labels.
This FreePBX box is currently configured via SIP Legacy [chan_sip] (/admin/config.php?display=sipsettings)
Bindport: 6111 ( also open in the router)
The assumption would be that all phones would bind to port 6111, but that is not happening.
The phone behind the firewall seems to be connected to port 63722, where 1 of the external phones is connected to port 5060 and the last one is not connected (although sometimes this works and connects via a random port, also 5060 or higher).
I’m currently not in control
How do I read this screenshot and what can be improved to assign a fixed bind port to all phones ?