Cat5 Jack Pt. 2

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  #1  
Old 06-11-05, 09:27 AM
twoseas's Avatar
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Cat5 Jack Pt. 2

I've installed tooless Cat5 jacks on both ends of my cable using the T568A convention;

PIN NUMBER COLOR
1 Green/White
2 Green
3 Orange/White
4 Blue
5 Blue/White
6 Orange
7 Brown/White
8 Brown

I purchased a Cat5e patch cord and noticed that these wire colors do not match my jack colors.

They are set up the following way looking left to right with the snap release pointed up and the connection towards you:

orange/white, orange, blue/white, blue, green/white, green, brown/white, brown

Is this a problem ?? I feel that if as long as there is 8 wires, regardles of the color coming out of the router, there is a path to send and recieve data.

Am I correct ??

Thanks,
Ray
 
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  #2  
Old 06-11-05, 05:23 PM
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568A or 568b use the same patch cord
 
  #3  
Old 06-14-05, 09:30 AM
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Originally Posted by twoseas
I purchased a Cat5e patch cord and noticed that these wire colors do not match my jack colors.

They are set up the following way looking left to right with the snap release pointed up and the connection towards you:

orange/white, orange, blue/white, blue, green/white, green, brown/white, brown

The wire order you describe for this "Cat5e" patch cable is neither 568A nor 568B. While it will probably work, that cable does not meet Cat5e specs (thus it is NOT a true Cat5e patch cable, even if the components it is made from are rated Cat5e). The difference between 568A and 568B is that the green and orange pairs are in opposite positions from how you terminated your jacks. The wires in the 3rd and 6th position are ALWAYS from the same twisted pair. I suggest you buy the next cable somewhere else, or buy a different brand.

BTW: A crossover cable looks like 568A on one end and 568B on the other, thus crossing the green and orange pairs.
 
  #4  
Old 07-05-05, 06:18 PM
KaosX
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technically as long as the order is the same on both ends you have a stright through cable.

Industry standard is 568B on both ends for a straight through.

568a is used to either crossover cables, or for phone systems.

It's always good to follow industry standard in case you have someone else come out its simpler for them, or if you are having an issue its easier for you to help yourself with other's advice.
 
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Old 07-06-05, 05:18 AM
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Originally Posted by KaosX
technically as long as the order is the same on both ends you have a stright through cable.

Straight through? Yes. Straight through per Cat5 spec? No. Pair 1-2 must be a twisted pair, as must be the 3-6 pair, the 4-5 pair, and the 7-8 pair.

The OP's cable in question has 3-4 as a twisted pair, and 5-6 as a twisted pair, which is wrong for Cat5.

Will it work? Probably at 10Mb, very likely at 100Mb, very questionable at gigabit. The fact it is a short cable no doubt helps, as the interferance from the improperly paired wires from the two mixed twisted pairs in minimized by the short cable.
 
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