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Emergency broadcasting refers to the most effective means for the government and relevant departments to convey early warning information or appropriate post-disaster response information to the public when major natural disasters, emergencies, public health and social security and other emergencies occur, and it plays an important role in the field of communication. With the rapid development of science and technology, cable digital network system and mobile communication 4G network has been widely used in all aspects of people's work and daily life, therefore, through the use of cable digital network system and mobile communication 4G network to carry out the construction of emergency broadcast command system is also an inevitable trend. Based on the significance of the emergency broadcasting system construction, this paper analyzes the design and characteristics of emergency broadcasting system in digital networks and the 4G network era, and further reflects on the importance of emergency broadcasting.
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