Windows Server 2003 Acceleport RAS Install seems faulty

I just installed a 4 port Digi Acceleport RAS card in a Windows 2003 server. Windows sees the card, under hardware manager it shows 4 seperate modems, using the native Windows driver modem.sys. All seems well. Except, when I go to send a fax, I get a report back that there is no dial tone. I have checked the phone wire, it has dial tone.

Will this modem work on the native Windows drivers?