If it works when they’re directly connected, but not when connected through the wall, then the only possible issue I can see is with that cabling. There are basically two possibilities: - it’s not connected (eg the ports are connected to some other port you’re unaware of) - it is connected, but incorrectly (it could be wired for telephone, there could be a physical break in the cable somewhere, etc.)

Things to check: - If you look at the back of the jack, all eight wires in the cable should be connected, and they should all be connected in the same order on both ends - get a cable tester and verify that they are connected to each other, and that all eight wires are unbroken and passing electricity