Alarm output parameter structure of video intercom
struct{ DWORD dwSize; BYTE byIOUseType; BYTE byRes[63]; }NET_DVR_VIDEO_INTERCOM_IOOUT_CFG, *LPNET_DVR_VIDEO_INTERCOM_IOOUT_CFG;
Structure size.
Alarm output usage: 0-disabled, 1-for electronic lock, 0xff-custom.
Reserved, set to 0.