mass notification system

https://info.smartevals.com/smartevals-introduces-smarthowl-the-only-mass-notification-system-designed-specifically-for-universities/

https://www.kent.edu/campus-safety/news/mass-notification-system-expanded-all-campus-phones

All Kent State University-registered Internet Protocol (IP) phones on the Kent Campus and participating Regional Campuses have been connected to the

Robuta