On Tue, 11 May 2004 09:03:31 +0100, Dave Plowman
wrote:

The outlets I've bought mention T568B and T586A using what appears to be
the same wiring colours but in a different sequence. What's the difference?

The T568B configuration is what you end up with on the second RJ45 if
you wire the first in the T568A configuration in a crossover cable.

http://www.duxcw.com/digest/Howto/network/cable/cable5.htm

--
bweebar