I am running Merlin's 378.55 on a RT-AC68U that was formerly a T-Mobile Cellspot.
For some reason UMA (wifi) calling is not working and the ANDROID handset indicates: Error: REG99 "unable to connect"
When I took the handset to the store to reproduce the problem I did not experience this problem. That seems to indicate that there may be a problem somewhere between the router and modem. To top it off, I have the same router / firmware in my other home and had no problems with wifi calling....
UMA T-Mobile Calling
For some reason UMA (wifi) calling is not working and the ANDROID handset indicates: Error: REG99 "unable to connect"
When I took the handset to the store to reproduce the problem I did not experience this problem. That seems to indicate that there may be a problem somewhere between the router and modem. To top it off, I have the same router / firmware in my other home and had no problems with wifi calling....
UMA T-Mobile Calling