I have had this phone for a little while now. It dials out and receives calls but will not ring. All 4 wires are going to the right terminals. When I got the phone I had to do some reconfiguring with the wires to the network in order to make it work in doing that while also attempting to get the ringer to work the gong would move when touched to a certain terminal but that was it. There is a grey wire coming out of the line switch that does not go to anything it just has a yellow piece of tubular plastic around the end of the wire