Setting up a VAXstation

Patrick Finnegan pat at computer-refuge.org
Tue Oct 2 15:15:27 CDT 2007


On Tuesday 02 October 2007, Sridhar Ayengar wrote:
> Liam Proven wrote:
> >> If you don't find one, you can still use a MMJ serial
> >> cable/console to boot it.
> >
> > I don't own a serial terminal. I'd have to try to make a cable and
> > hook it to a PC and use a terminal emulator. Yet more complexity!
>
> Making an MMJ cable is a piece of cake.  Just take the retention clip
> off of the RJ11 at the end of a phone cord.  Crimp an RJ45 on the
> other end with the proper wires heading to the proper pins, and use a
> Cisco RJ45->DE9 adapter.

If you're using the right Cisco adapter on the other end 
(labelled "Terminal" usually, but not "Modem", basically any DB25 or 
DE9 adapter that's got a female end), you shouldn't need to recrimp the 
other end.  Just shove the RJ11 into the adapter and 
the 'ez-disconnect' end into the MMJ jack.  (This assumes that the 
phone cable is properly wired as a "roll-over" cable, with the wires on 
either end being in the opposite order, and that you've got at least 4 
pins wired on the cable.  Just 2 pins wired, and all you'll do is wire 
the grounds together. :)

Pat
-- 
Purdue University Research Computing ---  http://www.rcac.purdue.edu/
The Computer Refuge                  ---  http://computer-refuge.org


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