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Re: [Shop-talk] running ethernet wires

Subject: Re: [Shop-talk] running ethernet wires
From: "Randall" <>
Date: Tue, 7 Apr 2009 13:40:12 -0700
> Sort of.  POTS single-line phones will work fine on T568B.  Two line
> phones may, or may not.  It depends on how the cross connect stuff is
> done.

I'm not following you here, David.  Even with a 2-line phone, as long as the
patch cords are wired 1-1, they should not care which wire is paired with
which wire.  That has been true even for the multi-line digital signaling
systems I've worked with.  The only real difference between 568A termination
and 568B termination is the color of the pairs ... can your phones see in

> If you're doing a new installation, go with T568A.  There's very
> little reason not to; it's the preferred solution, and I expect T568B
> will eventually die.

I presume you mean the 568A termination, rather than the obsolete 568A
standard.  The old standard didn't even mention Cat 5e, let alone Cat 6.
However EIA-568-B recommends using the 568A termination.

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