[MSDN Library June 1998] TAPI Device Classes (74.4208494208494%)

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 Messages (61.2629546840073%)

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 Structures (59.9471652103231%)

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 Unicode Support (59.4208494208494%)

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 Functions (58.6313757366389%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1 > TAPI Reference