[MSDN Library April 2000] TAPI Version 1.4 (55.4878048780488%)
MSDN Library - April 2000 > Platform SDK > Networking and Directory Services > Telephony Application Programming Interfaces (TAPI, TSPI, MSPI) > TAPI Version 2.2 (For C Applications) > TAPI 2.2 Overview > General Programming Considerations > TAPI/C Versioning