The modem output looks good.

I believe the error message from kppp just means that
the ppp files in /etc haven't been configured, or are not there.

pppconfig should do the trick.

And you will need to know the device address of the modem for kppp
the pppconfig program may provide it for you. With a pci slot modem it depends
on what slot it is set in. something like /dev/ttySX with "X" being a specific #
that defines the pci location.

Good luck-let us know how you make out.