I bought the GL-SFT1200 a week ago and hooking everything up was easy and great. Everything in the house works as it should....except one major problem, my wife and I both stopped getting calls and SMS on our Verizon phones. This includes being able to call out for send SMS.
I've only got 1 more week before I can return so I hope someone can help quickly before I need to just go buy something else.
My phones do use Wi-Fi for calling when I get home and I want to keep it that way. It has worked fine with my previous router for years. I only upgraded to this for the gigabit hard line. Other than that my old router still works and the problem goes away when I revert back to it.
If I was smart enough, I’d investigate what port / protocol was used by phones for WiFi calling to see if they were blocked somehow. I have a Flint 2 MT6000 and my iPhones work fine with WiFi calling. My setup is pretty basic - the only features I’ve changed has been to enable AdGuard and a Wireshark vpn service.