Janet Plato wrote: > DS1 cabling does not use the normal USOC pairing Huh? 1-2 and 4-5 are wire pairs in common T568A and T568B wiring schemes, to include most any Ethernet patch cord. 1-2 is the same pair used for half of 10/100 Ethernet, and 4-5 is the pair "inside" the 3-6 pair that handles the other half of 10/100 Ethernet. pt