[Elecraft] K3S RJ-45 Pin Alignment

[Kevin Stover]

The standards go thusly.

TIA/EIA 568-A (T568A)

Pin 1 - white / green stripe

Pin 2 - green

Pin 3 - white / orange stripe

Pin 4 - blue

Pin 5 - white / blue stripe

pin 6 - orange

pin 7 - white / brown stripe

pin 8 - brown


TIA/EIA 568-B (T568B)

Pin 1 - white / orange stripe

Pin 2 - orange

Pin 3 - white / green stripe

Pin 4 - blue

Pin 5 - white / blue stripe

Pin 6 - green

Pin 7 - white / brown stripe

Pin 8 - brown


568B is predominant in the US. If you're making patch cables use the 
same standard on both ends.
If you're making a cross over cable use the "A" on one end and the "B" 
on the other. It really doesn't matter if you use a standard or not as 
long as both ends are identical...that is until someone else works on 
your network. I spent a week rebuilding 50 CAT6 runs that someone 
decided to use their own standard on.

I've got 'em memorized. I can also subnet IPv4 in my head.

I need a hobby.;-)



On 5/1/2016 9:53 PM, Byron Servies wrote:
> There are 2 wiring standards for cat5/5e/6 cable into RJ45 style modular
> plugs: EIA/TIA-568A and EIA/TIA-568B (aka T568A and T568B). They are
> slightly different, and both work to gigabit speeds. You can mix them, but
> in a data center, for example, they will try to stick with 1 or the other.
>
>
> 73, Byron N6NUL
>


-- 
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441



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