Re: can sendfax run from a script not associated w/a tty?

[David Woolley <david@djwhome.demon.co.uk>]

> I believe this deserves to go in the FAQ.  'modem is busy' == 'modem is
> actually in use, or the serial ports don't allow multiple processes to open 
> the serial ports simultaneously' .. the gotcha is that debian comes setup by 
> default to configure all serial ports WITH session_lockout, which is not the 
> desired setting when faxgetty assumes ONLY uucp locking and opens the modem
> for the duration of it's existence!

The advice that comes with most software which actively answers modems is
NOT to use the /dev/cuX ports, but to only use the /dev/ttySX ports on Linux.
This is for exactly this reason.  I seem to remember that Hylafax carries
this warning, although I've successfully used it with session locking
disabled, on /dev/cuX.