I just moved into a new house and it's wired for ethernet. There's a junction box that has a "Bridged Telecom Module TM-8" in it. My cable modem's phone jack is plugged into the "Line In" on that box and their are 8 slots all running to various ports in the house. All the jacks in the house are RJ45.
The problem is that I can't get a dial tone in any of the jacks. If I plug the phone directly into the modem it works fine but not when I plug into the outlet.
Anyway to test what's wrong? I'm a programmer and have some pretty basic electrical wiring knowledge but can't seem to figure out what's wrong.