| Platform SDK: TAPI | 
The QOS_EVENT enum describes quality of service (QOS) events. The ITQOSEvent::get_Event method returns a member of this enum to indicate the type of QOS event that occurred.
typedef enum QOS_EVENT
{
  QE_NOQOS = 1,
  QE_ADMISSIONFAILURE = 2,
  QE_POLICYFAILURE = 3,
  QE_GENERICERROR = 4
} QOS_EVENT;
  Windows NT/2000: Requires Windows 2000.
  Version: Requires TAPI 3.0 or later.
  Header: Declared in Tapi3.h.
ITQOSEvent, ITQOSEvent::get_Event, ITBasicCallControl::SetQOS, QOS_SERVICE_LEVEL