The features that Telepresence Server has and MCU don't have (Choice 3)

Video compositing is available on both MCU and Telepresence Server, making it a shared feature rather than one exclusive to Telepresence Server.

Auto-attendant conference menu is a feature present on MCU platforms and is not unique to Telepresence Server.

Telepresence Server supports active presence, which dynamically signals the active speaker to all participants - a capability absent on traditional MCU platforms.

Telepresence Server natively supports multiscreen/multistream endpoints (such as Cisco CTS systems using multiple screens), which legacy MCU hardware cannot accommodate.

Multiple layout support exists on both MCU and Telepresence Server, so it is not a differentiating capability of Telepresence Server.

Automatic lecture mode is available on MCU platforms and is not exclusive to Telepresence Server.

Telepresence Server can be deployed as a virtualized software instance on Cisco UCS hardware, whereas traditional MCU devices are fixed-function hardware appliances with no virtualization option.