Which type of conference must be booked through Cisco TMS with a start and end time and a predefined set of participants?

Ad hoc conferences are initiated spontaneously without any prior TMS booking, start/end time, or predefined participant list.

Multiway conferences are on-demand escalations from an existing point-to-point call and do not require TMS scheduling.

Auto-dialed participant conferences can be associated with scheduled events but the defining characteristic of requiring TMS booking with time and participants describes the scheduled conference type specifically.

Rendezvous conferences are always-on or on-demand and participants join by dialing a static address rather than being pre-registered in a TMS booking.

Scheduled conferences are pre-planned meetings created and managed in Cisco TMS, requiring a specific start and end time and a defined participant list before the conference occurs. TMS handles resource allocation, dial-out to participants, and scheduling of MCU or bridge resources in advance. This distinguishes them from on-demand conference types that are created spontaneously.