8 Jun
2005
8 Jun
'05
11:09 p.m.
Hi all,
just to give the current state of affairs:
I decided to go after those cables I had missed anyway, and made a couple
phone calls and mails to the people responsible for recycling. Indicating
that "there has been a mistake at the computing center" brought me in
contact with the internal recycling department, where I got an appointment
for yesterday morning to come sort through the stuff, which was still there.
To get it short: I went, and finally got two HP PSI -> X.21 cables, 5 m
each. Issue solved. Now to learn something about X.21, and/or communications
standards in general... Any good sources Google won't turn up likely?
Additionally, I got four original HP standard serial cables (SubD-9f -
SubD25-m) and an Exabyte streamer in an external SCSI enclosure, which even
still had a cartridge inside. Even more to learn about...
Yours sincerely,
--
Arno Kletzander
Stud. Hilfskraft Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
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9 Jun
9 Jun
10:56 a.m.
Arno Kletzander wrote:
To get it short: I went, and finally got two HP PSI
-> X.21
cables, 5 m each. Issue solved. Now to learn something about
X.21, and/or communications standards in general... Any good
sources Google won't turn up likely?
If you want to know the details about X.21, the X.21 docs
from ITU (previously the CCITT) would be the way to go.
Antonio
--
---------------
Antonio Carlini arcarlini at iee.org
3:57 p.m.
To get it short: I went, and finally got two HP PSI
-> X.21 cables, 5 m
each. Issue solved. Now to learn something about X.21, and/or communications
standards in general... Any good sources Google won't turn up likely?
I know nothing about it,and the offiical atandard is likely to be
expensive :-(
Somewhere I have something called a TAXER, which appears to be a bit
error rate tester for an X21 link. It's a rather nice portable instrument
with a 64180 processor in the middle of it (got it at a radio rally for
not very much...) I also have some kind of comms bridge. It's got a 68K
processor IIRC, a floppy drive on the front, and X21, X25 (at RS232
levels) and Ethernet connectors on the back. They're on separate plug-in
boards that connect to the main logic board, there's a 48 pin socket on
the mainboard associated with each comms card that holds a 8390 ethernet
chip for the ethernet interface and a specially-pinned-out (I suspect)
COM5025 (?) serial chip for the other 2 interfaces.
You've just reminded me to dig this stuff out and have a play...
-tony
7087
days inactive
7087
days old
2 comments
3 participants
participants (3)
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a.carlini＠ntlworld.com -
ard＠p850ug1.demon.co.uk -
Arno_1983＠gmx.de