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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