A paging system allows for one-way communication to a large audience. Regardless of the broadcast source, a one-way paging system lets the speaker provide clear, amplified instructions throughout a facility. The paging employee speaks a message into a telephone and that message is then broadcast through a network of speakers. Messages can also be recorded and broadcast at a later time.

Paging systems can be used to send a variety of messages. The most common example of a paging system is rapid communication between employees in a retail setting. A department store cashier can request assistance from another department to answer a customer question.
One of the most important uses for paging is to warn employees of a fire or other emergency. In those scenarios, there is no more effective means of quickly communicating with your workforce.