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Joining 568-B Wiring with 568-A Wiring

#1 User is offline   llixgrijb 

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Posted 02 May 2010 - 09:35 PM

I'm planning on joining two ethernet cables together with a coupler in order to make one long cable. The problem is, one cable has 568-B wiring and the other has 568-A wiring. Will this kind of connection work, and if so, how will it affect the integrity of my network?

#2 User is offline   AMD010 

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Posted 03 May 2010 - 01:13 AM

Im thinking that you would just make a crossover cable. . . crossover cables are used to connect to like devices, like two PCs directly. I dont know what devices you plan connecting but if im not mistaking, some routers will be able to detect a crossover cable, and adjust accordingly.
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#3 User is offline   llixgrijb 

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Posted 03 May 2010 - 08:28 AM

The two cables will go directly from the router to a single computer. I just want to extend the existing cable's length using a coupler and all I have available is a cable with different wiring.

#4 User is offline   llixgrijb 

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Posted 03 May 2010 - 08:28 AM

The two cables will go directly from the router to a single computer. I just want to extend the existing cable's length using a coupler but all I have available is a cable with different wiring.

This post has been edited by llixgrijb: 03 May 2010 - 08:31 AM


#5 User is offline   llixgrijb 

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Posted 03 May 2010 - 04:40 PM

This is what I'm planning to do:

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#6 User is offline   Orecomm 

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Posted 03 May 2010 - 07:13 PM

It will work. The only difference between 568A and 568b is the color code sequence for pairs 2 and 3. Since the pairs are wired alike (except for the color of wire used) and straight through, and the coupler is straight through, the result is a piin for pin extended cable. You should be sure the total cable length is under 300 feet, but I suspect that isn't much of a problem.

#7 User is offline   llixgrijb 

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Posted 03 May 2010 - 08:00 PM

View PostOrecomm, on May 3 2010, 05:13 PM, said:

It will work. The only difference between 568A and 568b is the color code sequence for pairs 2 and 3. Since the pairs are wired alike (except for the color of wire used) and straight through, and the coupler is straight through, the result is a piin for pin extended cable. You should be sure the total cable length is under 300 feet, but I suspect that isn't much of a problem.


The end connected to the modem is 568b and the end connected to the computer is 568a. Wouldn't that in essence be a crossover cable? That's what I'm trying to avoid.

#8 User is offline   AMD010 

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Posted 06 May 2010 - 10:40 PM

No, hes right. I dont know what i was thinking. although the colors are different it does not change the pins will not change. Im not sure what i was trying to in-vision the other day, but Orecomm is right
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#9 User is offline   llixgrijb 

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Posted 14 May 2010 - 02:29 PM

Just got the coupler today. Works great, no perceptible lag.

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