I recently finished a room in my basement and junctioned and ran an additional phone line from the jack where the cable modem was in our office. Both the jack in the office and the new jack in the basement work, but the jack in our bedroom is dead. I’m baffled on why this would be. NOTHING else has been changed besides connecting the wiring and running the new line. Does anyone have any ideas on why a previously fine jack would not be functional now and how I might resolve it? Thanks!
Where's the third set of wires located? In the office jack? Double check your wiring