PHONEHOOKSWITCHMODE_ Constants

The PHONEHOOKSWITCHMODE_ bit-flag constants describe the microphone and speaker components of a hookswitch device.

PHONEHOOKSWITCHMODE_MIC

The device's microphone is active, the speaker is mute.

PHONEHOOKSWITCHMODE_MICSPEAKER

The device's microphone and speaker are both active.

PHONEHOOKSWITCHMODE_ONHOOK

The device's microphone and speaker are both onhook.

PHONEHOOKSWITCHMODE_SPEAKER

The device's speaker is active, the microphone is mute.

PHONEHOOKSWITCHMODE_UNKNOWN

The device's hookswitch mode is currently unknown.

No extensibility. All 32 bits are reserved.

These constants are used to provide an individual level of control over the microphone and speaker components of a phone device.

Requirements

  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.