19 May
2015
19 May
'15
8:47 a.m.
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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