I have a cordless phone directly connected to the phone jack on the ooma unit that works fine , but when i plug the wall cable into the wall jack on the unit there is nothing anywhere else on any of the jacks , dead line...i have cut the cables going into the house , so there is no back feed from the outside going into the home....i tried a splitter with the cordless and the wall plug into the phone jack , but it went dead then for both lines....what am i missing?
Jim
Jim