The Telephony Application Programming Interface (TAPI) is a Microsoft WindowsAPI, which provides computer telephony integration and enables PC's running Microsoft Windows to use telephone services. Different versions of TAPI are available on different versions of Windows. TAPI was introduced in 1993 as the result of joint development by Microsoft and Intel. The first publicly available version of TAPI was version 1.3, which was released as a patch on top of Microsoft Windows 3.1. Version 1.3 is no longer supported, although some MSDN development library CDs still contain the files and patches.
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<programming, communications> (TAPI, or "Telephone Application Program Interface") A Windows 95Application Program Interface enabling hardware independent access to telephone based communication. TAPI covers a rather wide area of services from initialising the equipment (e.g. a modem) and placing a call to voice mail or control of a remote computer. [Telephone or Telephony?] (1995-12-05)