Message delivery system

摘要: A message delivery system is described which includes a plurality of announce units, each means for storing respective segment. controller activates selected ones the units in sequence order to broadcast made up segments number line interface units. Each connected telephone and acts transmit associated line. The store predetermined such that total separate segment recorded with an end signal detected by unit at generates used automatically proper order. Because divided into segments, it possible change only one without disturbing other portions message. Furthermore, if any single fails, remaining continue deliver In this way disclosed continues operate reduced capacity event failure or more