synergy: You can run 100mbs over cat 3 if the conditions are right.

For this you need 4-pair, don't you? 100BaseT4? Or maybe just limited distance over 2-pair???

Don't mind me. For a moment I thought your earlier post was saying you needed 4 pair, not 4 wire. More coffee... Pay attention.... More coffee....

(It really *is* nice when a problem comes down to the fixably simple versus the agonizingly mysterious!)