On 12/26/2012 12:05 PM, Cindy Croxton Electronics Plus
wrote:
I have an entire case of adapters, made by Energy
Transformation Systems,
Inc.
I called their tech support this morning, and was told that these were made
for Token Ring connections, using IBM Type 1 or Type A cables?
There are 2 different PN:
EB-TRT-I has impedance matching, uses pins 3,6 and 5,4
EA-DATA-U does not have impedance matching, also uses pins 3,6 and 5,4
These have female RJ45 on one end. Apparently they are used to connect to a
MAU?
They look like these
http://www.cuc.eu/en/li/conrj/rjembase/879700.html
But use pins 3,6 and 5,4.
Anybody trying to resurrect any old TR stuff?
I have some TR stuff that I hope
to bring up at some point. I'm
looking for an IBM 3174-family attachment controller with Ethernet to
handle some 3270-family terminals, but I would settle for a TR version
(I have a MAU) and use a translational bridge to get there.
None of the stuff I'd be using is RJ45-based TR though.
I have a 3174 with a token ring card and use a DB9 to RJ45 adaptor into
an IBM 8226 with RJ45 sockets.
I also have a couple of PCMCIA cards and some PCI token ring cards all
of which have RJ45 sockets on. I use a Cisco 2612 like this:-
to link the networks. Main issue is that my nasty BT Home Home won't let
me change its routing table so I have to use NAT to get to the internet