[MSDN Library June 1998] How to Make Unsupported Modems Work in pre-Windows NT 3.5 RAS Versions (58.8066449908555%)
MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Server 4.0 Resource Kit > Windows NT Server Networking Guide > Appendix E - RAS Reference > RAS and Modem Compatibility Standards