[MSDN Library June 1998] Extended Line Services (51.671682626539%)

MSDN Library Visual Studio 6.0 > Specifications > Platforms > Telephony Application Programming Interface (TAPI) > Chapter 3 > Line Device Class

[MSDN Library June 1998] Extended Phone Services (47.7572182900798%)

MSDN Library Visual Studio 6.0 > Specifications > Platforms > Telephony Application Programming Interface (TAPI) > Chapter 3 > Phone Device Class

[MSDN Library June 1998] Extended Telephony Services (43.5766860185465%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 2.1 > Overviews > The Telephony Programming Model > Service Levels

[MSDN Library June 1998] Extended Telephony Services (42.4138953208721%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TSPI Version 2.1 > Overviews > The Telephony Model > Service Levels

[MSDN Library June 1998] Extended Line Services (39.9283533004463%)

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 September 1992] Extended Command Messages (28.4891869274137%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Chapter 4 Message Overview > Media Control Interface Messages

[MSDN Library September 1992] Extended Command for Windowed Video Devices (24.9392004863961%)

Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 3 MCI Device Drivers > Handling Extended Command Messages and Data Structures

[MSDN Library September 1992] Extended Commands (21.9990603711534%)

Product Documentation > Multimedia Development Kit > Programmer's Reference > Chapter 7 MCI Command Strings > About MCI Commands

[MSDN Library September 1992] Extended Commands for Device Operation and Positioning (21.7630592288595%)

Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 3 MCI Device Drivers > Handling Extended Command Messages and Data Structures

[MSDN Library September 1992] Extended Commands for Working with MCI Element Files (21.5849965507968%)

Product Documentation > Windows 3.1 DDK > Multimedia Device Adaptation Guide > Chapter 3 MCI Device Drivers > Handling Extended Command Messages and Data Structures