26 Dec
2012
26 Dec
'12
9:05 a.m.
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 confess, these are way beyond what I have any knowledge of!
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
_____
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2637/5988 - Release Date: 12/26/12
26 Dec
26 Dec
9:20 a.m.
On 26/12/2012 17:05, 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 a Token Ring network but its all plain RJ45 so really "modern". I
would have thought these were more relevant to preserving or documenting
the IBM Cabling System. I wonder if any one is interesting in
preserving or re-creating this type of network. Does Al at CHM, the
folks at MARCH or TNMOC have any plans to demonstrate this sort of early
structured cabling systems,,,,
I confess, these are way beyond what I have any knowledge of!
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
_____
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2805 / Virus Database: 2637/5988 - Release Date: 12/26/12
5:14 p.m.
On Wed, Dec 26, 2012 at 11:20 AM, Dave <dave.g4ugm at gmail.com> wrote:
I have a Token Ring network but its all plain RJ45 so
really "modern". I
would have thought these were more relevant to preserving or documenting the
IBM Cabling System. I wonder if any one is interesting in preserving or
re-creating this type of network. Does Al at CHM, the folks at MARCH or
TNMOC have any plans to demonstrate this sort of early structured cabling
systems,,,,
Ugh, I used to deal with these by the hundreds at $work ca. 1997 or
so. The building was wired with IBM Type-1 (at least what I
understand to be called Type-1, and what is in Cindy's pic) connectors
in floor cells in every office cubicle. PCs had IBM or Intel ISA TR
cards which were connected with 9-pin to Type-1 cables into the floor
cells. As the building networks converted over to Ethernet, we used
these BalUns to run Ethernet through the Type-1 jacks. Probably not
"up to code" and probably not the optimal media for Ethernet. These
were the 10mbps days, too, so in the few cases were we had 16mpbs TR
to the desktops, (theoretical) performance actually decreased!
Anyway, I have a couple IBM MAUs with these connectors, so I'd be in
for a few BalUns. I will email Cindy directly.
--
jht
27 Dec
27 Dec
1:52 a.m.
On Thu, Dec 27, 2012 at 2:14 PM, Jason T <silent700 at gmail.com> wrote:
... As the building networks converted over to
Ethernet, we used
these BalUns to run Ethernet through the Type-1 jacks. Probably not
"up to code" and probably not the optimal media for Ethernet. These
were the 10mbps days, too, so in the few cases were we had 16mpbs TR
to the desktops, (theoretical) performance actually decreased!
...
No problem at all... in fact, Type 1 was usable to 300 meters for 10base-t
Ethernet as against 100 meters for UTP. (Lower losses and lower
interference.) Using baluns to convert 10base-2 to Type 1 was, as you say,
less than optimal but certainly no problem. I used a Type 1 variant, with 6
additional twisted pairs inside the outer shield, to wire my house.
(Salvaged from a dumpster when our office moved buildings.) I still use
Ugly-plugs for the wall terminations, with Ethernet wired RJ-45 patches
from the wall to the equipment. It's not future
proof in that I'd need 4
pairs instead of 2 to run 10Gig-E, but I think Gig-E
will handle my modest
data needs for a while yet.
7:10 a.m.
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.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
11:54 a.m.
On 27/12/2012 15:10, Dave McGuire wrote:
On 12/26/2012 12:05 PM, Cindy Croxton Electronics Plus
wrote:
I have a 3174 with a token ring card and use a DB9 to RJ45 adaptor into
an IBM 8226 with RJ45 sockets.
http://www-304.ibm.com/shop/americas/webapp/wcs/stores/servlet/default/Cate…
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:-
http://www.ebay.com/itm/121042548117
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
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. from the token ring world, although the 2612 is only 10
Megs on the
internet.
-Dave
Dave
G4UGM
4330
days inactive
4331
days old
5 comments
5 participants
participants (5)
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dave.g4ugm＠gmail.com -
dmhills＠gmail.com -
mcguire＠neurotica.com -
sales＠elecplus.com -
silent700＠gmail.com