If the phone line out of the router is plugged into the house phone line and a house landline phone in another room is plugged into the same house line, the phone will not ring, but works otherwise (e.g. call can be answered). If the house landline phone is plugged directly into the Xfinity router, the phone rings when calls are received. This just started happening for no known reason.
Is it just the ring alert that fails and all other phone functions work fine on the house wiring? Is it ALL other outlets or just one room? Maybe there is something in the wiring that is degrading/affecting the signal.
Yes, just the ring tone does not work with phone is plugged into the house wiring but works fine when plugged directly into the router.