When scheduling a multipoint conference, which three devices are required for the conference to be scheduled and completed successfully? (Choose three.)

Cisco Unified Communications Manager provides the call control, dial plan, and scheduling integration that routes participant calls to the conference bridge and manages session signaling throughout the conference.

The multipoint control unit is the bridge that receives, mixes, and redistributes audio and video streams from all participants simultaneously, making it the core component without which a multipoint conference cannot exist.

Video conferencing endpoints are the devices through which participants connect to the conference; they are the ultimate destination of the entire infrastructure and without them there is no conference to complete.

Cisco Unity Connection is a voicemail and unified messaging platform that plays no role in video conference scheduling, call routing, or multipoint stream bridging.

Cisco Unified IM and Presence manages instant messaging and user availability status and has no function in the scheduling or execution of a multipoint video conference.