WiFi calling dropping out frequently
I've got an Xfinity dual band modem/router model TG02DCW3482P2CT and am experiencing WiFi calling dropouts on an intermittent basis.
Phone is in airplane mode (this shuts off cellular)
There are no pods or mesh network attached to my home wifi network
The dropouts occur whether the phone is one foot away from the modem or at the opposite end of the house from the modem
The dropouts occur on multiple iPhones
A couple of debugging patterns I detected:
1) WiFi calls were dropping between 3 and 9 minutes over six calls. I then power cycled the modem and the next call sustained for 65 minutes
2) One call dropped due to a Wifi calling dropout at precisely midnight (this does not seem like a coincidence to me)
The Comcast rep suggested I create separate networks for 2.4 and 5.0 (rather than leave them on the same network) and force the phones onto one network or the other. But I don't see a way to do that using the XFI app or using the equivalent web based version.