29 Dec
2004
29 Dec
'04
3:03 a.m.
On Dec 29 2004, 10:29, John Allain wrote:
RJ45 type cables also factored in with IBM's Token
Ring
connectivity. There were adaptors, probably Baluns to go
from the largish connectors to these. This _could_ be one.
Not very likely, though. I think Jim is more likely correct, that it's
a console cable or at least some sort of serial cable. The colours
Marvin mentioned are often used for flat cable; baluns are for twisted
pairs.
Also, serial cables commonly use a scheme where the innermost two wires
(4,5) are ground, either side are receive and transmit (3,6), and
handshake lines DTR/DSR (or DCD) (2,7) and CTS/RTS (1,8) are at the
edges. By that scheme, Marvin's cable would short DTR to DSR and RTS
to CTS, which makes sense.
--
Pete Peter Turnbull
Network Manager
University of York