Key telephone system
Rubinstein, Sue R. Marketing Program Services Group, The Aries Group, Rockville, Maryland.
Rafferty, Vincent F. Marketing Program Services Group, The Aries Group, Rockville, Maryland.
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A communications system that allows users to access more than one central office line, answer or access a central office line from more than one telephone, and place a line on hold in order to answer or initiate calls on other lines. The system usually includes an intercom capability that allows users on different telephones in the system to communicate with one another. See also: Intercommunicating systems (intercoms)
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