[geeks] QUESTION: RJ45 -> RS-232, using CAT5 cable

[Charles Shannon Hendrix]

Tue, 29 May 2007 @ 17:54 -0400, Sandwich Maker said:

> " From: Bill Bradford <mrbill at mrbill.net>
> " 
> " 
> " The pinouts I've been using, which are AFAIK the "cisco"/industry
> " standard (I've been making a lot of console server serial adapters,
> " the same type you're using):
> " 
> " []
> " 
> " If I need null-modem, I just use a Cisco blue console cable that "flips"
> " the RJ45 wiring, or use an inline coupler that does the same thing.
> 
> 2 decades ago or so when i worked for bell labs, i learned that there
> were 4 rj45 serial standards.  the two i can remember anything about
> were tia/eia 568a, and 568b which iirc is the one at&t backed for pds
> [premise distribution system] wiring.  your symmetrical layout was one
> of the others and i always wondered why it wasn't more popular.
> expecially when i discovered the rj45s on the 3b2 8-port card were
> wired backwards-568b, necessitating special fixer cables.

What do you guys think about the Yosh serial standard?

The claim is that it eliminates 6 of the top ten RS-232 hassles.

Anyone ever look at it?


-- 
shannon           | We have nothing to prove.
                  |        -- Alan Dawkins