These phones worked fine for us until we changed our phone service to a cable company - serviced phone line. I am no techy, so I don't know exactly what the problem was, but the phones WILL NOT RING. They recognize the incoming call, the phone lights up and the caller ID works, but no ring.We spent almost an hour on the phone with Motorola and they finally concluded that the phone just would not ring with this phone service.We are returning the phones and seeking another brand that is compatible.