mines a hardware modem in a pci slot it's doing my head in!!!
this was posted on a newsgroup
Run lspci as root and note down your modem's IRQ and PORT number. Next
run
> setserial as follows.
>
> # setserial /dev/ttyS0
>
> You should get some output like:
> /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
>
> This indicates the settings for your serial port that is com1 in windows.
>
> Now do setserial for ttyS1 to ttyS3. You are looking for a serial port
with
> your modem's IRQ and PORT number. If you find it then you will know which
> one to use to query your modem.
>
> If you don't find it then you will need to configure one of your
> unused /dev/tty's
>
> For instance:
>
> # setserial /dev/ttyS0 port 0x1420 irq 10
>
> Note that you need to replace those values with your own.
>
> Styvaen.
hope it's of some help
Taff