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Re: Serial Connection

On Sun, 27 Mar 2011 16:27:08 -0400 (EDT), Stan Hoeppner wrote:
> For attaching a terminal all you need to connect are pins 2, 3, and 7 on
> a DB25, or 2, 3, and 5 on a DB9.  Reverse 2,3 on one end of each cable
> to get your x-over.  All the other pins are for modems only and are not
> used for terminal connections.  Serial printers only need 2, 3, 7 as well.

That would be transmit data (TD), receive data (RD), and signal ground (SG),
respectively.  That is the minimum.  But it may not be sufficient.
If the terminal is set up for hardware flow control, for example, it
won't be sufficient.  Besides, the OP wants to cross-cable two servers
together, it seems, and use a minicom session on one to open a terminal session
on the other.  minicom was written for use with a modem and probably
expects more of these lines to be functional than just TD, RD, and SG.
The devil is in the details.  If he uses a full cross-over cable, as
outlined in


(or a standard serial cable with a similarly wired null modem), it should
work with any DTE-to-DTE connection.

  .''`.     Stephen Powell    
 : :'  :
 `. `'`

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