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Hospital communication systems designed to provide voice (i.e., telephonic) communication between staff members and/or between staff and individual patients via wire or radiated electromagnetic (i.e., wireless) signals. These systems typically consist of a central exchange console including a switching device that allows communication with each user, power supplies, interconnecting wiring or electromagnetic (e.g., radiofrequency, microwave) signal transmission, and appropriate antennas and telephone sets. Hospital telephonic communication systems may have capabilities for sending messages (e.g., visual displays); they are used to provide routine and emergency voice communication.
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