Brian Sauer wrote:
> First, forgive me for not really knowing what I'm talking about here.
> I got thrown into the middle of a support issue at my new job. The
old
> "unix guy" blew off a bunch of cases and they landed in my lap.
> Unfortunately I am not really a Unix guy so I'm not even sure where
to
> go next.
>
> I have a client running SCO Openserver 5.x who can not print. That's
> easy enough, the printer is setup on /dev/ttya08, which is actually a
> Wyse terminal.
>
> I was left with the notes that the printer is connected to channel 3
> on the mux and that I should check the baud rate. I have no idea what
> to do with this info.
>
> What does channel 3 mean to me as far as figuring out which device
the
> printer is actually using? I have no mux documentation. It's a
> Multitech 428. Can't even find this mux at Multitech's web site,
much
> less any info that might answer the question any similar. Thanks for
> any help or pointers you can offer.


It's doing "local" or "passthru" or "transparent" printing. An escape
code is sent to the terminal which causes it to switch subsequent bytes
out the printer port until it sees a "stop" sequence.

See http://aplawrence.com/SCOFAQ/FAQ_scotec7passthru.html

If this is on a Digi, it may actually be supposed to be /dev/pra08,
which is the "transparent print" device - see "man ditty" or try typing
:"ditty ttya08". See http://aplawrence.com/Problems/index.html#ditty


http://aplawrence.com/Unixart/terminals.html might help too.
--
Tony Lawrence