I had someone to do network cabling for me. Because it was not easy for me to pass the cables through floors. I just noticed that the cable the guy made is not even either 568A or 568B standard. I look at the cable order, from left to right is brown - ? - orange-blue- white/blue-white/orange-gr
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And it will not affect your network or the other wires or other network devices. Simply just will make it harder to fix the one cable that stops working. You will find this even with professional services. One company will terminate one standard, and the other will terminate in another standard....end of day doesn't matter....just makes it difficult when have to replace one of the ends.
Inside the cable there are 8 cables, four twited pairs. I could, if I wanted to, make it blue, green, orange, brown, WBl, WG, WO, WBr....and the network would not not the difference. The wires are all the same, same size....the colour coded it simply for the reason to make sure you have the same sequence on the other end.
Now, do I advise you to use a standard "yes."....however to you question does it matter. No. Just makes it harder to replace "that specfic cable". And to fix it if you are not sure of the sequence just change both ends.
If the blue and blue/white were swapped around it would be a rolled over 568A (assuming the first ? is brown/white and the last ? is green/white).
While 568A and 568B are functionally equivalent, you should not really mix them (nor should there be non-standard wiring mixed in). Each pair has a different number of twists per foot, which provides the shielding. They're especially susceptible to interference and crosstalk where they're untwisted and inserted into the plugs or punched down on jacks. If the installer did not follow the 568A or 568B specifications for what color goes where, what makes you think they held the untwisted lengths to 1/2'' max as those spec's call for?
So, I would vote for asking them to come back and redo the ends to the 568B standard so those match the rest of your wiring. But, hey - I'm just a dumb electrician.
Did they provide any documentation saying the completed runs had been certified, by the way?
I would say it's not technically correct to say that you can use them in any order you want without problems - as long as they're the same on both ends.
The 568A and 568B were designed for a reason. The signals will interfere with each other and introduce errors into the communications - the severity will depend on how you're using the pairs and in what combinations.
If you're messing around with experimenting - I would do it in a lab, not a production network. If I were paying someone to install cable, I expect them to follow industry standards and specifications - and to even test all the cables with professional cable testing equipment.
I hope this helps.
The pros use a tool called a fluke (a cable tester) this will show any interferance, static, etc. Does you cable tester test for crosstalk or static? If not, if you want to make sure the wire doesn't have any the you would need to use a tester that has such functionality.
pseudocyber please note that I did say I would suggest going with the standard and that Darr247 did have a valid point regarding crosstalk. My point was that the wire would still work with both ends the same.
Thanks for the points, bubuko. To answer your question - a cable tester like yours is good for testing breaks (continuity) and pin-out. However, as long as you've got a continuous cable, and you've got the pinout the same on both ends - that's all it will tell you. You'd have to have a much more sophisticated tester to run other tests on the cable, such as cross-talk. Or you can rent one. However, if you pay someone to install cable, specify you want it tested and/or certified as Cat5,5e,or 6 ahead of time - this will test your terminations and cable end to end. Also, spec you want test results on each cable. This will seperate the pro's from the wannabe's. HTH. :)
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by: PriceDPosted on 2009-08-20 at 15:43:46ID: 25147800
It is nice to stay standard, however in the end, as long as both ends are the same it will work just fine. The issues that you may run into is that if you need to replace one of the end you may try to do it the stanard way and it will not work, you just simply need to re-terminate the other end as well.