Please disregard my previous solution about using IPv6. My VoIP provider voip.ms only supports IPv4. If they did support IPv6 then I could run my ATA in IPv6 and not have a problem.
Just to add a comment. Today, I set up my ATA to use both IPv4 and IPv6 with IPv4 being preferred. The logic being if IPv4 does not work it will default to IPv6 which bypasses the CGNAT. I hope this change works. If I set the ATA only to IPv6 th...
