I've got my setup rolling well. The only exception is wifi calling. I've got an android on verizon. When trying to use wifi calling, it simply misses texts and fails to send. Callers get sent straight to voicemail. it occasionally works, but usually fails.
I saw a post that stated switching from cloudflare to quad9 would fix it, but I've also seen posts stating that it did not help. I've tried different things to get this working. I'm at a loss and looking for suggestions.
Any help would be greatly appreciated.
Same situation here: verizon carrier, android phone, same issues with my phone not sending/receiving texts and calls go straight to voicemail. Haven't seen this addressed by anyone with any meaningful solution.
I fixed this problem on my network by changing the firewall optimization to conservative. I was getting no calls, and I couldn't call out. Works fine now.
Firewall>Settings>Advanced