The Automatic Intercept System routes calls to nonworking telephone numbers to a centralized location where a time division network under stored program control connects the calling customer to a series of prerecorded announcements. The customer is told what number he reached and, from information stored in a large‐capacity disc file, is given the reason the number is not in service and, if available, the new number at which the called party may be reached. This paper describes the system objectives and organization and also serves as an introduction to the detailed papers which follow.
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