--- Curt Vendel <curt_at_atari-history.com> wrote:
> John....
>
> Oh yeah, tons and tons of the DB9 to DB25 connectors using the flat
> silk type cablings (light blue and black) or standard RJ45.... I don't
> think the cross over cables for CAT5 would apply like a null-modem cable
> though, you'd need to check the wiring in the hoods....
While you would not want to use a CAT5 crossover cable in one of these
serial dongles, what you _can_ do, at least with various wiring schemes
in common use, like Cisco's, is swap *regular* CAT5 (or CAT3*) cable
for the flat light-blue or black cables - *That's* how you get straight
through or null-modem - the two types of cables are wired inverted from
each other (1-1, 2-2, etc. vs 1-8, 2-7, etc.)
I do this all the time with Cisco adapters.
-ethan
* I have a box of CAT3 cables that were once used for patches in an
old network closet at a former job. We also used them for "phone
cords" for our Cisco IP phones - there's some toys I'd like to play
with at home - IP Telephony
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Received on Thu Jun 20 2002 - 09:30:37 BST