Which to use 568A or 568B?

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 Question by Robert Osenbaugh posted 18 Nov 2002
 Which to use 568A or 568B?
What are the pros and cons of using 568a versus 568B?
Can you mix the two?
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 Answer by Dmitri Abaimov posted 04 Dec 2002
Dear Robert,

The 568A is a bit more convenient when you have to deal with 2-pair digital phones AND Ethernet devices, running on the same cabling system. If it's 1-pair digital or analog phones and Ethernet devices, it does not really matter.

You absolutelly cannot mix the pin layout in one cabling system

Sincerely,
Dmitri Abaimov, RCDD

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