I am trying to use an IPC-HDBW4831-ASE camera connected to a Uniview NVR302-08E-P8-B. I can set up the IVS functions of the camera , e.g. the tripwire function, from the camera web interface but these only trigger actions local to the camera. The Uniview NVR interface doesn't seem to recognise the IVS functions via the VCA menu (or any other). Is there any way of getting access to the IVS functions on the NVR, e.g. to trigger recording to the hard disk?