Kernel-Mode Device Driver TSP
The Kernel-mode TSP (Kmddsp.tsp) allows an application to handle legacy WAN miniports (for example, NDIS 4.0 drivers) as TAPI devices.
The Kernel-mode TSP is installed with Windows Server 2003 operating systems, Windows XP, Windows 2000, Windows NT, Windows Millennium Edition, Windows 98, and Windows 95.