Mark Neidorff put forth on 12/25/2010 10:47 AM:

> Please explain what you are trying to accomplish and at what network speeds.  
> Off the top of my head, 10baseT networks used 4 wires and 100baseT used all 8 
> wires.  If you are trying for 100baseT speeds, you have to use all 8 wires.

If memory serves me well, this is wrong Mark.  Both 10BaseT and 100BaseT
only use 2 pair, one each direction.  1000BaseT uses all 4 pair, two
each direction.  1000BaseTX uses only 2 pair.  1000BaseT can run over
Cat5 or above.  1000BaseTX requires Cat 6 or above.

Ahh, here we go:

http://en.wikipedia.org/wiki/Ethernet
http://en.wikipedia.org/wiki/1000baseT#1000BASE-T

-- 
Stan


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