In article <[log in to unmask]>,
Alan AMBERS  <[log in to unmask]> wrote:
>
>You need to make a cable that connects from the DTC (3 pin) to a db-25
>cable to plug into your modem.  The HP 3pin connector's pins 2 & 3 are the
>same as a DB-25.  Pin 1 is equal to a DB-25 pin 7 (ground).  The HP3000
>DTC ports are a DCE, so to connect to a modem, you will need to swap pins
>2 and 3 with the DB25 connector to plug into the modem.  This makes a
>kinda null modem cable.
 
Alan, thanks for the reply. Also, thanks to everyone else who made replies;
they were all very helpful. Here is what I finally ended up doing:
 
I made the cable as Alan describes above, except that instead of hooking
up a modem directly to the 925LX, I put the DB25 end into one of the
serial ports of one of our Unix boxes. This Unix box has a modem, so
our mother-to-be will be able to dial into the Unix box, and then
get over to the HP from there. I could have just as easily put a modem
at the DB25 end, but this way I don't have to rob a modem, and I have
a permanent way to get sessions on the HP from Unix.
 
However, I wired the cable wrong for a direct link from computer to
computer.  :-}  <sound of hand striking forehead> A null-modem adapter
made for a quick fix.
 
Again, thanks to all that responded.
 
--
Griff Miller                         "Keep my mind on higher things; keep my
Systems Administrator   '95 Z-28      mind on truth."
Positron Corporation    '85 VF1100S
[log in to unmask]            My opinions are mine, not Positron's.