[rhelv6-list] I know this is a stretch, but...

[Bill]

As for the pinout, 2,3,5 on the dsub is all the signal lines you should need, but 
sometimes some emulators want more pins shorted together to set the cts/rts or dsr/dtr 
signals on. That would be hooking 4 to 6 and 7 to 8 on the dsub.

If you have a volt meter, you should see -12v on the wire you connect to pin 2 
compared to the pin you connect to 5. The wire to 3 should float, meaning it should be 
able to be shorted to either 2 or 5 without changing the -12v difference between the 
two by 1v. This is because the wire to 2 should carry the data from the switch to the 
pc and 5 should be the ground. The wire to 3 should carry -12v from the PC back to the 
switch.

I have seen pinouts like your chosen diagram, but there are also many where 2,3 are 
the red/green (2,3) pair. Many use the black instead of yellow for ground on 5. Every 
combination is possible. There has never been a standard. Even within dsubs the 
red/green and yel/blk are swapped sometimes.

Be sure your phone cable connects at least 4 wires. Sometimes only the middle 2 are 
connected in some phone cables.

Bill Watson
bill at magicdigits.com

---------- Original Message -----------
From: "thomas at redhat.com" <thomas at redhat.com>
To: rhelv6-list at redhat.com
Sent: Sun, 23 Jun 2013 02:37:16 -0500
Subject: Re: [rhelv6-list] I know this is a stretch, but...

> On 06/23/2013 02:16 AM, Facundo M. de la Cruz wrote:
> > Can you try with another terminal emulator like screen? In some cases I
> > could'nt get any response from Minicom, but when I tried using screen I
> > had this response, anyway you can play with others terminal
> > configuaration (just check your vendor manual for do it). What cable are
> > you using? The pinout is correct?. I'm trying to give you some tips for
> > do it.
> >
> > Good luck and regards
> 
> Hi Facundo -
> 
> I was using the DB9F to RJ11 Modular to D-Sub Adaptor Kit at 
> http://www.frys.com/product/2402370, but I realized a few minutes ago 
> that I definitely pinned it incorrectly. Hopefully that is the issue... 
> Unfortunately I only bought one, and I can't see a way to pull the pins 
> back out, I think they only connect one time and then they're permanent. 
> I'll go get another one tomorrow and pin it correctly. I think the 
> correct pinout is at 
> http://goldfndr.home.mindspring.com/digitraveler.html - if anyone has 
> any corrections, I'd love to know.
> 
> I am also using the Link Depot USB to DB9 Serial at 
> http://www.frys.com/product/6819966. It shows up fine as /dev/ttyUSB0.
> 
> I think my serial communications problem is just that I pinned the DB9F 
> to RJ11 Modular to D-Sub Adaptor wrong.
> -- 
> Thomas Cameron, RHCA, RHCSS, RHCDS, RHCVA, RHCX
> Chief Architect, Western US
> +1-512-241-0774 office / +1-512-585-5631 cell / +1-512-857-1345 fax
> http://people.redhat.com/tcameron/
> IRC: choirboy / AIM: rhelguy / Yahoo: rhce_guy
> 
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> http://www.redhat.com/innovation
> 
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------- End of Original Message -------