A country or region often faces various emergencies, such as earthquakes, typhoons, heavy rains, snowstorms, tsunamis and even wars. In these emergencies, it is crucial to notify residents of affected areas quickly and accurately to ensure they can respond immediately, regardless of their activities or location at the time, to effectively prevent loss of life and property. The N3D emergency broadcast system takes into account many aspects, including using multiple communication systems for conversion, meeting minimum communication requirements, performing daily inspections, and even being able to operate the emergency broadcast central control system even when the network connection to the control platform is lost.