Interface your applications to the telephone system. Dial calls automatically, perform actions in response to incomming calls, handle multiple lines and interface to switchboards.

ActiveX Telephony Components by Black Ice Software

Fax C++/ActiveX Developement Toolkit 12.50

The FAX C++/ActiveX is designed to allow developers to combine Fax and Data. It is fully object oriented, and takes into account the new emerging technology in faxing communications. Developers can build black and white or color faxing applications within a few days using the Fax C++/ActiveX toolkit and can support a range of fax hardware platforms with a single application.

ActiveX Telephony Components by BearWare.dk

TeamTalk 3 SDK 3.5a -  The TeamTalk 3 SDK provides users with a simple way to integrate a VoIP client into their existing applications.

ActiveX Telephony Components by VoiceAngel (Soband Inc)

VoiceAngel V5.1

VoiceAngel is an ActiveX OCX to control TAPI compatible devices including a variety type of voice modems, voice boards and PBX in popular development environment like Visual Basic, Visual C++, Visual Foxpro, Delphi, C++Builder, Power Builder. It abstracts complex TAPI interface into simple and flexible property, methods and events. Just several lines of codes is needed to make your application work.