On Sep 29 2004, 8:23, John Foust wrote:
> At 02:02 AM 9/29/2004, you wrote:
> >I've hardly ever seen a commercial standard Cat3 / Cat4 / Cat5
/Cat5e
> >cable that was miswired with split pairs. Telephone cables wired to
> >the old USOC standard are different[1], but not usually fitted with
> >RJ45 plugs, and flat cables are obviously not twisted pairs.
>
> I agree, and I suspect any straight-through RJ-45 cable
> was for a telephone system, not networking. Perhaps
> Sellam knows examples.
ISDN S-bus sometimes uses flat cables for the last piece of flex
between wall and device (you shouldn't, because 1+2 and 7+8 are
sometimes used for phantom power, but many devices only use Tx and Rx
which are 4+5 and 3+6).
--
Pete Peter Turnbull
Network Manager
University of York
Received on Wed Sep 29 2004 - 12:07:12 BST