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CAT5 wiring

By kenromer ·
What is the industry standard when connecting CAT5 wiring to wall outlets on one end and to a hub on the other end? What colour coding is followed? I recently ran into a problem trying to figure out and had to use a multimeter to check the connections and still I am not very clear.
Is there any publication on the net which I can read and/or download?

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CAT5 wiring

by Churdoo In reply to CAT5 wiring

Cat 5 ethernet uses pins 1,2 as one pair White-Orange / Orange per T568B and 3,6 White-Green / Green respectively; FYI, 4,5 and 7,8 although unused for ethernet networking, should Blue / White-Blue, White-Brown / Brown, respectively.
Patch panel (or hub) to jack, is a straight-through configuration, i.e. use the same scheme on both ends.
There's plenty of material on the net, just do a search for something like "EIA/TIA 568 Category 5 T568B"; here's one-such reference I found at random which appears to have the text of the actual specification, as well as the two color-coding diagrams, http://www.frostelec.com/568.html. Or a lot of wiring/connector suppliers have reference material on their sites as well. There are two color-coding configurations, T568A or T568B (our company uses T568B).
--Charlie

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CAT5 wiring

by kenromer In reply to CAT5 wiring

Thank you for your reply. It didn't answer my question directly but did give me some useful website location. I was not looking for making a patch cable which is easy and straight forward. I had to connect the cable from the wall outlet on one end to a hub on the other end.
As I had mentioned in my question I used a multimeter to determine the color coding which was as follows: on the wall outlet the contractor had connected the cable using T568A configuration. However on the other end of the cable which I had to connect to a hub, I had to connect the connector as below:
1=white-orange
2=orange
3=white-green
4=not used
5=not used
6=green
7 & 8=not used

Thanks again.
Ken.

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CAT5 wiring

by McKayTech In reply to CAT5 wiring

There are actually two standards (468a and 468b) and you can use either as long as you use the same one on each end.

There is an excellent guide to Cat5 wiring on the Web at http://www.stg.brown.edu/~sjd/wiring/CAT5-wiring.html#pinouts

There is a section that describes the wiring, color by color.

paul

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CAT5 wiring

by McKayTech In reply to CAT5 wiring

I just re-read my answer. The standards should indeed be 568a/b rather than 468.

paul

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CAT5 wiring

by kenromer In reply to CAT5 wiring

Thanks a lot for your reply. I had already figured out the color coding using a multimeter, but since your link had the correct info I was looking for, I am pleased to award the points to you. Sorry for the delay.
Ken.

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CAT5 wiring

by wlbowers In reply to CAT5 wiring

568B
With the release tab down, right to left.

brown
white of brown
green
white of blue
blue
white of green
orange
white of orange

This is the industry standard. But the wires don't care. As long as you have the same colors on the same pins your jake.

Buy your self a good ethernet cable tester.

Good Luck Lee

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CAT5 wiring

by kenromer In reply to CAT5 wiring

Thanks for your reply, though a bit too late.
Also it wouldn't have helped as I discovered by opening one of the wall outlets that the contractor had used the T568A configuration. Anyway thanks for your interest.
Ken.

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CAT5 wiring

by kenromer In reply to CAT5 wiring

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