Forum Discussion
Home Internet & Wifi calling
just set up new Tmobile home internet in a rural area-all carriers are iffy here but the Tmobile speed and connection are ok at home (not so much in some communities near me). That is the issue-I ha...
This is an OLD thread, but I hope this may help. My TM wifi calling quit working many months ago. After a useless 45 minutes w TM telephone support, TM just blamed my ISP! I did some serious searching. Turns out that ROUTER settings were the key. Some sites advocated making MULTIPLE changes, port forwarding, firewall rules, etc. FOR ME, I narrowed things down to ONE THING: IPSec Pass-through. I enabled THAT on my Asus router, rebooted my phones, and BOTH now work w wifi calling. Turns out, TM actually has a webpge dealing w this, though TM TS clearly had NO CLUE about it. Here's the TM page:
https://www.t-mobile.com/support/coverage/wi-fi-calling-on-a-corporate-network
Again, ALL I had to do was to enable IPSec pass-through, and wifi calling works. Technically, I think this IS a firewall issue, but you can change it directly w/o getting into the weeds of FW rules. Initially, I tested by BRIEFLY disabling my FW. That worked, but re-enabling the FW and just enabling IPSec pass-through was sufficient, and a more secure approach. GL.
