Romm preperation is very important for both systems. The light is the major factor. Also different soundlevels are needed. You need about 300 – 400 lux in the view to the camera from 9 different areas in the room. The measurement is done in the direction to the camera not to the ceiling.
Also the silence in 6 areas of the room is measured, with AC turned on. And the reflection of noise. There are several tools for measuring this. Cisco is very picky on these values.
Here the carton for the camara adjustments is just flipped around. On the picture it’s fixed in the wrong way.