The Optimum Classroom System is a complete networked classroom amplification solution that provides full, hands-free duplex audio, VoIP (Voice over Internet Protocal) based paging and emergency notification. Thanks to the revolutionary MS-450, paging and intercom functionalities are built right into the system. In times of emergency, designated speakers will still receive power over Ethernet so paging can still be heard throughout the school. With the included IR-Satellite, this unit can be installed as part of the SAFE (Security Alert For Education) System, allowing teachers to summon help with the push of a single button.