This zip contains driver and utility for a ISDN Pci modem with no brand based on a chip with this code: "hfc-s pci a 2bds0 isdn ccd 9922e"
The driver is suitable for win 98 (i tried on second edition) and for win nt 4.0. Unpack the zip with folders. The driver will be find by windows when you specify the path. The utility have to be installed by setup.