Which CCC action applies only to the Cisco TelePresence MPS Series?

The 'block fast update requests' CCC action is specific to the Cisco TelePresence MPS (Multipoint Switch) Series because MPS endpoints can generate high-frequency video fast update requests during multipoint conferences, and this action allows an administrator to suppress that behavior - a capability that is not applicable to other endpoint types.

Status Duo Video is a general CCC monitoring action available for endpoints supporting dual video streams, and is not exclusive to the MPS Series.

Move back is a standard conference layout control action available across multiple endpoint families, not unique to the MPS Series.

Release floor is a standard floor control action used in multipoint conferences broadly and is not restricted to the MPS Series.