[MSDN Library June 1998] Digit Gathering (39.1749723145072%)

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

[MSDN Library June 1998] Digit Gathering (37.2846683893195%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TSPI Version 2.1 > Overviews > Line Devices > Supplementary Line Services

[MSDN Library June 1998] Digit Monitoring (30.2443244739756%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1 > Overviews > Supplementary Line Functions > Call Monitoring

[MSDN Library June 1998] Digit Monitoring (30.0936278407209%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TSPI Version 2.1 > Overviews > Line Devices > Supplementary Line Services > Monitoring