Dear Petr,

In message <20121024080454.ga8...@ibawizard.net> you wrote:
> 
> can you provide more details please? I wonder how do you handle 20-30 serial
> ports and on/off feature remotely. I'm interested in both HW/SW as I plan
> creation of some kind of automated CI system for kernel/rootfs images for
> several devices. Thanks.

There is no magic included. Others have been doing this for decades.

As for the serial ports:  the most convenient way is to use terminal
servers (aka console servers aka device servers).  Just google...

When looking for a low cost solution, have a look on ebay, too - at
the moment you can bid for about 15 Avocent Cyclades TS3000 48 Port
Terminal Servers - yes, these are old, but you get 48 serial ports for
less than 200 bucks or so...

Also well worth checking for: Lantronix EDS16 / Lantronix EDS16PR

As for the remote power solutions:  there is a ton of technology
available off the shelf - from high end commercial stuff (like
Lantronix SecureLinx SLB Branch Office Manager Console Server,
combining 8 serial ports with 4 switchable power outlets and an
8-port Ethernet switch) to low-cost do it yourself solutions.

If you need just a limited number of switchable power outlets, look
for example into the GEMBIRD SIS-PM SilverShield (4 switchable power
outlets controllable over USB; web/telnet interface through Free
Software - see sispmctl); if you want something that scales well from
just 2 or 3 power outlets initially to several hundrets, then you can
for example use radio-controlled sockets like the FS20ST (see for
example http://www.elv.de/fs20-st-3-funk-schaltsteckdose.html - sory,
in German only) which can be controlled through FHEM software
(http://fhem.de/fhem.html).

Just look around, ther eis litarally tons of solutions for all kinds
of requirements and budgets...

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
Do not simplify the design of a program if a way can be found to make
it complex and wonderful.
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