I have a WE 2500 phone that has quit working. I thought it was becuase the last phone tech from UVerse messed up my polarity, and the only old phone that is polarity sensitive is this phone. So I reverse the red and green again in the phone jack. Still will not break dial tone. I repeatedly pushed the hook to break dialtone and get a silence, then pushed the buttons, and there were no tones. Does this mean that the mechanism is broken, or that there is a polarity problem? I did plug another modern phone, not polarity sensitive, into the jack, and it works fine.