My inexpensive commercially made cables are wired correctly. The pairs are interleaved properly on the connector. The two standards for pinouts are called XXX486A and XXX486B where XXX is some magic three letter acronym, (TIA perhaps IIRC?). I believe that alnost all data (as opposed to voice) wiring is done consistenty with one of the standards (but don't ask me which one). I have used CAT5 (not even 5E) to send two simultaneous 10Mbit Ethernet signals at once without trouble. Also, remember that CAT5 supports 100MBit full duplex. This implies a certain amount of immunity to what is happening on at least one of the other pairs. I would guess you would have pretty good results. Bob Ammerman RAm Systems -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu