Which three steps are required when tuning the cisco telepresence system 1300 camera cluster? (choose three)
A.
Level the camera cluster
B.
Tighten and lock down the camera cluster to the frame by using the side screws
C.
Tighten and lock down the camera cluster to the frame by using the centre screws
D.
Level the individual camera to ensure that is perfectly vertical
E.
Level the individual camera to ensure that is perfectly horizontal