At 2:13 PM -0800 3/18/04, Mitch Patenaude wrote: >I could be wrong, but I believe that Cat5 uses all 4 *pairs* of >wires, and not just 4 wires. Maybe that's only for full duplex.... > The 100BASE-T4 standard does run on Cat3,4,5 cabling and does require 4 pairs http://grouper.ieee.org/groups/802/3/10G_study/email/msg01046.html -Larry