Which three of the four center wires goes to which screw on the 305A block?

You are totally confused. You only use one pair. How could you possibly wire a jack with three wires?

I have never seen 3 conductor service wire- that coming in from the pole. Perhaps what you are talking about is what your house is wired with? Is this at the protector (didn't have NIDs or demarcs back then and I don't remember what a 305A looks like). If not that is where you want to start.

Do you own a butt set? The two conductors from the street are what you are interested in.

Oh, and throw those damn CAT5 jacks away. They are not for telephones only friggin' computers! Plug your computer into one by mistake and you'll wipe out your NIC on the first ring!

-Hal



[This message has been edited by hbiss (edited 03-04-2007).]