Richard wrote:
I'm looking to acquire a terminal server so I can
feed all the beasts
simultaneously :-).
Before a couple days ago, I didn't know anything about terminals servers
beyond the fact that they existed, so consider me a n00b.
I see that DEC has had a line of terminal servers. They look like
they would do the job (my needs are more along the lines of
connectivity rather than fancy features like 3270 support).
Reading around on the net indicates that Xylogics had a good line of
terminal servers, but that the similarly named Xyplex had buggy
product.
I'm not fixated on the DEC brand, but it looks like they made lots of
product over the years making them readily available and reasonably
priced.
I'm looking for at least 16 ports, preferably 32 as I've already got
more than 16 terminals :-). Whether those 32 ports come in one box or
two boxes (or even 4 boxes) is not so much a concern to me as is the
total cost of acquisition. Ultimately this could feed into a public
interactive museum space exhibit on timesharing. At the moment I
could connect the following:
- DEC
LA-120
VT-100
VT-278
- Heath/Zenith
Z-19
- Hewlett-Packard
HP1351A
HP2397A
HP2621A
HP2648A (2)
- Honeywell
VIP 7809
- Lear Siegler
ADM-3A
ADM-5 (2)
- Megatek
Whizzard 1645
- Tektronix
4010
4014
4105 (4)
9200T (6)
9201T (8)
- Televideo
925
- Teletype
Model 43
- Texas Instruments
Silent 700 (2)
- Westinghouse
W1643
Total: 39
Now realistically, I don't think it would be fruitfull to connect all
39 terminals in my collection as i) I plan on liquidating some of the
Tektronxi 9200T/9201Ts, one of the Silent 700s only has a modem
interface on the exterior and the Westinghouse doesn't have a keyboard
and has some sort of weird party line interface. However, even if you
factor all of those out of the picture a 32-port server still only
leaves me a few ports open. I'd probably need to get up to 64 line
capacity at some point.
I have an Equinox ELS-48 terminal server, with (originally) 24
MMJ ports. It uses seperate CPU and port-boards. BNC type
ethernet connector. Has room for another port card, if you can
find one.
However, some of the lines (1-4?) are disabled due to a lightning
strike. I got it mostly working again by removing the remains of
the dead interface chip, and several fried filter caps. Never used it
for anything after that "fix", but it tested Ok.
The filter caps should probably be replaced (2 small, 2 larger),
not sure of original value of the larger (value was burnt off).
The interface chip is probably not easily fixed. It charred the
circuit board, and the traces under it (*both* sides of the circuit
board, and probably the internal layers). Several traces are gone
(melted away completely). I think it only knocks out <= 4 lines.
$10 + shipping (from 83401)
Extra is for shipping materials, plus enough pepsi to power me
up enough to reach my UPS shipper.
Suggestions? Currently I've been looking at the
DECserver stuff on
ebay; they seem relatively plentiful and it seems that with patience a
good price could be had. There's a bundle of them on govliq right
now, but the operating condition is unknown.