25 Oct
2012
25 Oct
'12
12:26 a.m.
On 25/10/2012 02:08, Tothwolf wrote:
Not so fast. DEC was already doing this with 6P6C MMJ
cables with a
nearly identical system before Dave Yost came up with his standard using
8P8C adapters and cables. The additional two wires available with the
8P8C connectors allows for RTS/CTS.
Yes, I know - I have plenty of MMJ stuff - but it was always
DEC-specific. The beauty of the Yost pinout is that it is uses
ubiquitous cables as well as a simple and versatile pinout. Hence it's
adoption by Cisco and Sun. Everyone else was doing something unique and
often not even consistent within one product line (three different 8P8C
pinouts for Shiva terminal servers with the same model number is the
most extreme example I recall).
The Wikipedia page lists three 8P8C pinouts. My department's internal
wiki lists eight that we had to have cables for :-( Well, seven we
used, and TIA561 for completeness. I've never known anything actually
use that one.
--
Pete Peter Turnbull
Network Manager
University of York