Welcome to LQ, Digix.
Taking a look
here it would appear very much that you are running a WinModem. They are so called because they are designed specifically for Windows. If you can identify your modem from the list, then take a look
here to see if it has Linux support.
I normally advise people with PCI modems, however, that they should unburden themselves by removing it, selling or giving it away and purchasing an external SERIAL modem. I stress the term serial because a good many USB modems, which are still external, are actually also WinModems. The serial port, however, is not fast enough for undecoded data to flow through, so serial modems
must be hardware based, and so will work with any OS you care to throw at them.
HTH