typedef enum {
  VM_GSM_TEL_OK,
  VM_GSM_TEL_ERROR_UNSPECIFIED_ERROR,
  VM_GSM_TEL_ERROR_CANCEL,
  VM_GSM_TEL_ERROR_USER_ABORT,
  VM_GSM_TEL_ERROR_ACTION_NOT_ALLOWED,
  VM_GSM_TEL_ERROR_NOT_ALLOWED_TO_DIAL,
  VM_GSM_TEL_ERROR_NOT_ALLOWED_TO_ACCEPT,
  VM_GSM_TEL_ERROR_NO_ACTIVE_CALL,
  VM_GSM_TEL_ERROR_CALLED_PARTY_BUSY,
  VM_GSM_TEL_ERROR_NETWORK_NOT_AVAILABLE,
  VM_GSM_TEL_ERROR_CALLED_PARTY_NOT_ANSWERED,
  VM_GSM_TEL_ERROR_SOS_NUMBER_ONLY,
  VM_GSM_TEL_ERROR_INVALID_NUMBER,
  VM_GSM_TEL_ERROR_EMPTY_NUMBER,
  VM_GSM_TEL_ERROR_SOS_CALL_EXISTS,
  VM_GSM_TEL_ERROR_PREFERRED_MODE_PROHIBIT,
  VM_GSM_TEL_ERROR_FLIGHT_MODE_PROHIBIT,
  VM_GSM_TEL_ERROR_LOW_BATTERY,
  VM_GSM_TEL_ERROR_UCM_BUSY,
  VM_GSM_TEL_ERROR_VT_FALLBACK,
  VM_GSM_TEL_RESULT_MAX = 0x7FFFFFFF
} VM_GSM_TEL_RESULT;