// wwan.h

typedef enum _WWAN_VOICE_CALL_STATE {
  WwanVoiceCallStateNone,
  WwanVoiceCallStateInProgress,
  WwanVoiceCallStateHangUp,
  WwanVoiceCallStateMaximum
} WWAN_VOICE_CALL_STATE, *PWWAN_VOICE_CALL_STATE;
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Windows Driver Kit DDI reference (ne-wwan-_wwan_voice_call_state)

_WWAN_VOICE_CALL_STATE enumeration

Description

The WWAN_VOICE_CALL_STATE enumeration lists the different voice call states that are supported by the MB device.

Constants

`WwanVoiceCallStateNone`

The device does not support voice calls, or there is no voice call currently in progress.

`WwanVoiceCallStateInProgress`

A voice call is currently in progress. This value applies only to devices whose voice class is WwanVoiceClassSeparateVoiceData.

`WwanVoiceCallStateHangUp`

A voice call is completed. This value applies only to devices whose voice class is WwanVoiceClassSeparateVoiceData.

`WwanVoiceCallStateMaximum`

The total number of supported voice call states.

WWAN_VOICE_CALL_STATE - NtDoc