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Wireless public address systems in institutions are a long-lasting fixture, however they have not found their way into other type of services up until just recently. Public address (PA) systems are cordless (generally) now, both in schools as well as elsewhere, though there is some debate regarding whether or not this is an enhancement over a wired network. There are valid reasons behind both sides of the problem.
In colleges, cordless public address systems are typically integrated with the timing network that synchronizes all the clocks and bells. (Outside of education and learning, an integrated clock system is commonplace and also key to effective operation of business.) Among the major reasons for such synchronization is making sure a synchronised program of messages to all speakers.