[Info-vax] terminal servers etc

[VAXman- at SendSpamHere.ORG]

In article <kcdaks$d2v$1 at dont-email.me>, David Froble <davef at tsoft-inc.com> writes:
>Phillip Helbig---undress to reply wrote:
>> In article <50e9e0bb$1 at news.langstoeger.at>, peter at langstoeger.at (Peter
>> 'EPLAN' LANGSTOeGER) writes: 
>> 
>>> In article <kcbd7q$7nh$1 at online.de>, helbig at astro.multiCLOTHESvax.de (Phillip Helbig---undress to reply) writes:
>>>> Yes, I have some BNC terminators.  Should one go just on the DEChub
>>>> (i.e. the backplane) or on the DECserver as well?
>>> Only on the DEChub90 (The BNC - and the UTP - of the DECserver is unused if
>>> plugged into a DEChub90). You don't even have the space on the side for it.
>> 
>> OK, if it is in the hub, everything works through the hub, meaning the 
>> BNC connection on the hub goes to the outside world.  If not, then the 
>> BNC (terminate if not used) and UTP connectors to the outside world 
>> work.
>> 
>> I see that the DECserver (but not the DECrepeater) also has a power 
>> connection on the back, so can be run outside the hub.  The repeaters 
>> presumably don't need power, or get what they need through the 
>> backplane.
>
>I don't know what you're looking at, and some loose terminology is being 
>thrown around in this topic.
>
>The DECserver90TL, at least the ones I have, has the backplane 
>connector, the 10base2 connector on the side, and a power socket if the 
>unit is being used without the DEChub90.  (Or DEChub900).
>
>Bart is causing me to go to the basement to dig out the only 
>DECserver90M that I have, which I believe is non functional.  I don't 
>ever remember any twisted pair connection on any of the DEChub90 
>modules.  There was I believe a command port, and possibly something 
>else, but not a twisted pair RJ45 port.

DECserver90M has 9 8 pin sockets.  8 of them are white and are numbered 
1 through 8.  These are for terminal connections.  Next to the 8 white
connectors are 8 LEDs which, when the DECserver90M is booted/function-
ing, show which of these 8 ports is active.  Next to the 8 LED is an 8
pin socket which is metalic and will have above it printed the ethernet
address.  This is the twisted pair ethernet connection.



>> On another server and repeater (not in the hub and no connector for it), 
>> there is the same power connector, but an additional circular switch.  
>> What is the latter for?
>>  
>
>Never saw any switches.  Note, there were the modules sold as stackable, 
>but I never saw one of them.

What he's talking about is the extender casing for the standalone use of
these DEChub modules.  On the back of these there are 2 8 pin connectors
for communications a la the DEChub management modules (eg. DECagent90).
Next to these 2 connectors is a rotary switch.  It's used to assign the
equivalent of the DEChub90 slot number to the device.  The extention for
these DEChub90 modules was listed as DETRX-M.  It can be seen in this
photo:

  http://www.servershop24.de/images/produkte/i10/100560.jpg

along with the stackable housing.  The back of the DETRX-M can be seen 
in this photo: 

  http://www.servershop24.de/images/produkte/i10/100560-decbridge-1277821213-1743.jpg
 
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