Re: OT Any web site that teaches how to make LAN cable connection
> There's straight-thru and crossover - for crossover, they should be
> reversed. If the original is BLUE-RED-GOLD then the matching one
> should be GOLD-RED-BLUE (example is for explanatory purposes only).
> Straight-thru is literally that ; the wire on both ends should look the
> *exact* same through the RJ-45.
>
> Straight-Thru:
>
> 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
> (bottom) (bottom)
>
> Cross Over:
> 1 2 3 4 5 6 7 8 8 7 6 5 4 3 2 1
> (bottom) (bottom)
>
> Elizabeth
Please don't follow either of these wiring diagrams.
It's very important that pin 3/5(or 4/6, depending on how you look at it)
are swapped on both ends.
You want: (T-568A)
White/green, green, white/orange, blue, white/blue, orange, white/brown,
brown
Sometimes you'll see (T-568B, preferrred for new installations)
White/Orange, Orange, White/Green, Blue, White/Blue, Green, White/Brown,
Brown.
Both will work the same.
For crossover:
Do above, one side the orange/blue/green/brown setup, and the other side
the green/blue/orange/brown setup.
If you don't swap the 3/5(4/6) pins, your cable will might work, but
you'll get massive crosstalk, especially over distance or in an
electrically noisy environment.
Please see:
http://www.escape.ca/~droopy/ethernetcables.html
http://www.incentre.net/incentre/frame/ethernet.html
Also, see:
http://catalog.belkin.com/IWCatSectionView.processs?IWAction=Load&Merchant_ID=&Section_Id=522
http://www.startech.com/cable/networking.htm
Because that's a LOT easier and more reliable way to do it! If you
are making your own cables, proper cable testers cost far too much money.
I make do with an old Fluke 620, but it isn't rated for 100mbit or
gigabit.
Hope this helps,
Mike Dresser
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