I noticed when I unplugged the answering device off the phone jack that the phone went dead. I notice when I toke the plate off there was a blue wire that was free. I moved the wires and connection came back. When I attached the blue wire to the other blue wire because it's color coded the phone went silent. I kept the blue wire off the jack the phone works but none of the rest in the house work? What's going on? Do you have a suggestion? Thank you.