[MSDN Library June 1998] Digit Monitoring (58.6993970714901%)

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

[MSDN Library June 1998] Digit Monitoring (49.6193244739756%)

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 Gathering (28.0142580287929%)

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 (26.9837424633936%)

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