Weird stuff has a TI 810 (also if anyone has token ring wiring) - test-drb@ccmp.vtda.org

19 May 2015

RE: Token Ring

    As said below, you can probably not worry too much about the 
wiring impedance (etc.) for a small ring.
But you will still need a MAU or something like it.

The token ring adapters have a physical layer protocol for ring 
insertion and token monitoring.
The power-up state for a station wire is a physical loopback and it 
will try to successfully loop itself before inserting.

A copy of the newsgroup comp.dcom.lans.token-ring FAQ still lives at 
http://www.networkuptime.com/faqs/token-ring/index.shtml
Connector pinouts and other info is in there.   Stuff on Wikipedia too.

I had to dust off a few neurons to remember this stuff.
Dave.

I'm not reading this list consistently anymore... any direct 
questions should be CCed to me.

On 5/18/2015 01:00 PM, cctech-request at classiccmp.org wrote:
...
 Date: Sun, 17 May 2015 12:58:20 -0400
From: Sean Caron <scaron at umich.edu>
To: "General Discussion: On-Topic and Off-Topic Posts"
         <cctalk at classiccmp.org>
Cc: Sean Caron <scaron at umich.edu>
Subject: Re: Weird stuff has a TI 810 (also if anyone has token ring
         wiring)
Message-ID:
         <CAA43vkUJ7US+72OiYhEtrvOgM76u0tUv55wqAP65R21otLkbEg at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

I can tell you from firsthand experience that if you're just doing short
little runs within a vintage computer room in your home or something like
that, you can directly pin the 9-pin D-sub over to 8P8C and make short runs
with common unshielded Cat V cable and it should work fine. I did this all
the time when I was in high school to connect old MCA PS/2 machines with
the IBM token ring adapters (9 pin D-sub) to various old 8P8C MAUs that I
had acquired. I can't speak to dealing with those funky IBM connectors;
never worked with those.

Best,

Sean

On Sun, May 17, 2015 at 12:50 PM, Dave G4UGM <dave.g4ugm at gmail.com> wrote:

 >
 >
 > > -----Original Message-----
 > > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of
 > jwsmobile
 > > Sent: 17 May 2015 16:30
 > > To: General at classiccmp.org; Discussion at classiccmp.org:On-Topic and Off-
 > > Topic Posts
 > > Subject: Weird stuff has a TI 810 (also if anyone has token ring wiring)
 > >
 > > There is a white cased TI 810 at Weird Stuff in the AS IS room. Probably
 > > cheap.  Of course unknown condition.
 > >
 > > Got some very nice Token ring equipment from an IBM facility of some
 > sort.
 > > will be using for Hercules setups.
 > >
 > > I'll need some balun's for the RJ45 (ibm version) to the DB9 if anyone
 > has an
 > > idea of the hookup.  I'd like to figure out if I can wire this w/o using
 > the token
 > > ring cables, since I have what appears to be a bridge unit. I'll have to
 > research
 > > that though.
 > >
 > > Thanks
 > > Jim
 >
 > Jim,
 >  Is there a part number on the "bridge" unit? Typically the IBM units
just
 > switch the stations it and out of the ring.
 > Dave
 >
 > 

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