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Figure 69 (2/2) – Location procedure of a mobile terminal

National Alert System Using Cell Broadcast

There are different types of solutions that are designed to effectively send messages to large
numbers of mobile telephone users almost instantaneously while receiving input from the
subscribers. Especially designed for local and national authorities to deliver urgent messages to
large populations, the National Alert System can be used to inform the public about hazardous
situations such as terrorist attacks, pollution outbreaks, storms, fires, traffic jams and accidents as
well as minor events that are not immediately endangering the public safety and security such as
water break, power break, construction work, etc.).

This solution not only enables swift responses from authorities but gives them the capabilities to
provide a controlled and managed constant flow of information and instructions to the public using
different channels depending on the events nature and status constantly.

Figure 70 – National Alert System Using Cell Broadcast

312 ITU‐T's Technical Reports and Specifications