[MSDN Library June 1998] TAPI Reference (57.6875901875902%)
MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1
[MSDN Library June 1998] TAPI Client Management (56.0209235209235%)
MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1
[MSDN Library June 1998] TAPI Version 1.2 and Earlier (30.7828282828283%)
MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1 > Using the TAPI 2.1 Programmer's Reference > TAPI Versions
[MSDN Library June 1998] TAPI Device Classes (28.4018759018759%)
MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1 > TAPI Reference
[MSDN Library June 1998] TAPI Version 1.4 (28.2828282828283%)
MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1 > Using the TAPI 2.1 Programmer's Reference > TAPI Versions