Klein Tools VDV526-052 - Manual (Page 5)

5
WIRING AND DISPLAY EXAMPLES
T568B is electrically identical to
T568A, but swaps the green and
orange pairs. Either standard will
work as long as the same standard
is used at both ends of a run or
patch cable. Mixing “A” and “B”
creates a cross-over cable.
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Properly Wired T568A UTP:
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A common error in building a cable
is to put all the pairs in pin sequence
1-2, 3-4, 5-6 and 7-8. This will
produce the correct continuity, but
the pairs are designated to be on
pins 3-6 and 4-5 in the middle of
the connector for compatibility with
phone wiring. This wiring error is
only detected by the split pair test
since the designated pairs are not
twisted together.
T568A Cable with Split Pairs: