Wifi Calling Firewall Holes to Punch

Fri Jul 17 20:56:49 UTC 2020

On 17/Jul/20 22:09, Josh Luthman wrote:
> I do dozens of VZW WiFi calls a day.  My phone is behind NAT, no problem.
>
> It's probably 50/50 where the call starts on WiFi vs switches to WiFi
> after ~3 seconds from the poor VZW signal.

Same here, one of my cell operators uses VoWiFi for their calls and SMS's.

As long as I am on wi-fi though, all calls and SMS's are sent over wi-fi.

I'm doing NAT44 + native IPv6, no special holes punched in my Mikrotik
router (the cell provider is doing WiFi Calling over IPv4).

Mark.