| Platform SDK: TAPI | 
The PHONEINITIALIZEEXOPTION_ constants specify which event notification mechanism to use when initializing a session.
See phoneInitializeEx for further details on the operation of these options.
  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 2.0 or later.
  Header: Declared in Tapi.h.