[MSDN Library June 1998] ISDN Requirements (52.5384615384615%)

MSDN Library Visual Studio 6.0 > Books > PC 98 System Design Guide > Part 4: Device Design Guidelines > Chapter 20

[MSDN Library June 1998] ISDN Modem Requirements (24.5479724080268%)

MSDN Library Visual Studio 6.0 > Books > PC 98 System Design Guide > Part 4: Device Design Guidelines > Chapter 19 > Modem Basic Features

[MSDN Library June 1998] ISDN Notes (19.3764568764569%)

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 Communication Quick Reference

[MSDN Library June 1998] ISDN Subaddresses (18.5526646556058%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TSPI Version 2.1 > Overviews > Line Devices > Relationships Between Lines, Channels, and Addresses

[MSDN Library June 1998] ISDN Hardware (16.665409753645%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Server 4.0 Resource Kit > Windows NT Server Resource Kit - Supplement 1 > Chapter 4 - Using ISDN > Introduction to ISDN