When I pick up the handset, there is tone but it has a buzz on the background.
Phone is connected to a box and then cable from the box is connected to the Phone company's provider modem I guess.
So if I touch either of 2 lower contacts (blue or blue/white) with my finger, the buzzing noise goes away. My body is like a resistor or something. Contacts are screwed together fine, no prob with that.