How to set up serial communications?

[Job Hanssen <hanssen%plex.nl@localhost>]

Hi all,    

I have NetBSD1.3 up and running on my A4000/060, but now I'm trying to tackle
the next problem... Getting connected to the web.

Problem is that I don't seem to be able to talk to my modem.
- If I have it connected to the Amiga serial port, and do a
        echo > /dev/tty00 "ATZ"
  the Terminal Ready light of my modem flashes up and out again, then the
command-
  prompt returns.

- If I have it connected to port 0 on the HyperCOM4, and do a
        echo > /dev/ttyC0 "ATZ"
  the Terminal Ready light of my modem goes on and stays on, however, the
command-
  prompt doesn't return. I have to 'CTRL-C' and then I get my prompt back. I
then 
  also get a console message, stating:
        ksh: cannot create /dev/ttyC0: Interrupted system call
  However, it doesn't have to be created, it's already there...

Is this normal behaviour, or am I doing something wrong? Please, any word to
hint
me into the right direction is welcom.

Job Hanssen - hanssen%plex.nl@localhost