VanLUG Email Archive
Simon deWeerdt (deweerdt@radiant.net)
Mon, 21 Aug 2000 13:34:19 -0700
"G.Z.C" wrote:
> Hi,
>
> I've been told, there are basically two different CAT5 UTP standards
> the 568A and 568B. They claim that new installations are to use the
> 568A standard, but people just seem to use whatever they like. It really
> makes no difference which standard you use, as long as you keep both ends
> of the cable consistent (assuming you are making a straight-thru cable.)
> With a 4pair UTP cable, you have the option of using the second set
> of wires to expand. Normally only pins 1,2,3,and 6 are used for 10BaseT.
> Add to this, you can cross the 1 & 3, and 2 & 6, to make a cross-over cable.
> Do you all agree with this? Which is preferred configuration for 100Mhz?
Found http://www.ionet.net/~chill/eiatia.html on google
I don't see the diffference between using 568A and 568B (as long as both ends
of a cable use the same standard) for ethernet . In both cases pins 1&2, 3&6
are paired. For 568A they are called pairs 3&2 and for 568B they are called
pairs 2&3.
>
Simon
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