So why is there no /dev/modem anymore and should´nt the OS create
such a
symlnk when it sees the first operating serial port not used by something
else? (ie one would think that a serial modem could be plugged there).
Suppose it's your UPS or a cutting machine, or a 3d printer.. not good
things to randomly claim are modems.
There is a procedure for identifying some serial devices via magic PnP
sequences and it ought to be able to identify some modems that way. You
can't however randomly assume.
Alan