Parameter structure of main station No.
struct{ DWORD wPeriod; DWORD wDevIndex; BYTE byRes[124]; }NET_DVR_MANAGE_UNIT_DEVICEID, *LPNET_DVR_MANAGE_UNIT_DEVICEID;
Community No., range: [0,9].
Outer door station No., which is unique in each floor, and it starts from 0.
Reserved, set to 0.
NET_DVR_VIDEO_INTERCOM_UNIT_DEVICEID_UNION