[lug] PC to PC serial cable?

Alan Robertson alanr at unix.sh
Wed Feb 21 16:36:31 MST 2001


"Scott A. Herod" wrote:
> 
> Hi,
> 
>   I'm trying to create a PC to PC serial cable ( 9 pin )and I've found
> discussions in a couple of HOW-TOs
> 
> http://www.redhat.com/mirrors/LDP/HOWTO/Text-Terminal-HOWTO.html
> 
> and
> 
> http://www.redhat.com/mirrors/LDP/HOWTO/Serial-HOWTO.html
> 
> Most of the stuff there is completely Greek to me, plus the connectors
> I currently have access to don't quite match those described.
> 
> I've got two connectors which accept Cat5 cable in one end and
> are DB9 on the other end.  Can someone explain how the pin connection
> should go?  I've only got 8 wires of course.  Is the pin-out:
> 
>    2  <--  3   Transmit
>    3  -->  2   Receive
>    5  <->  5   Ground
>    8  <--  7  Req. to Send
>    7  -->  8  Clr. to Send
> 
> Are the others left unconnected?  Should I snip them or is it safe to
> have
> them pass through?  If the latter, which pin should I leave off?

By the way, CompUSA and sometimes Best Buy have a kinda cool Belkin cable
which has both 9 and 25 pin connectors on each end, so no matter what you
have, it'll work.  They tend to want between $20 and $30 each unfortunately.

	-- Alan Robertson
	   alanr at suse.com



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