Ancillary functions in NFPA 72 are sub functions of which systems?

Ancillary functions in NFPA 72 are sub functions of which systems?

• A. In-building mass notification system
• B. Emergency communications system
• C. Both in-building mass notification system and emergency communications system
• D. Central fire alarm system

Answer: (C)

Ancillary functions are the non-alert signaling features that support the systems responsible for delivering occupant notifications. NFPA 72 defines two main notification subsystems: the in-building mass notification system (MNS) and the emergency communications system (ECS). The ancillary functions are described as subfunctions of both of these systems, meaning they exist to support and enable the operation of MNS and ECS—things like system monitoring, testing, status reporting, and interfacing with other building systems to ensure reliable message delivery. Because these supporting capabilities pertain to both notification pathways, they fit as subfunctions of both the in-building mass notification system and the emergency communications system.

Ancillary functions are the non-alert signaling features that support the systems responsible for delivering occupant notifications. NFPA 72 defines two main notification subsystems: the in-building mass notification system (MNS) and the emergency communications system (ECS). The ancillary functions are described as subfunctions of both of these systems, meaning they exist to support and enable the operation of MNS and ECS—things like system monitoring, testing, status reporting, and interfacing with other building systems to ensure reliable message delivery. Because these supporting capabilities pertain to both notification pathways, they fit as subfunctions of both the in-building mass notification system and the emergency communications system.