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Full Automatic Intercept System - Switch Subsystem Disclosure Number: IPCOM000060822D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09

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Dorak, JJ Dunn, JM Graham, AD Gummersall, F Kimberly, D [+details]


This article describes telephone call switching apparatus for use with telephone company switching office equipment to intercept and respond vocally to calls to out-of-service numbers. Normally, communication between the basic office equipment and the interception processing apparatus is in 2/6 multifrequency (MF) tone form. However, offices, lacking 2/6 MF signalling capability, require costly operator intervention. The present apparatus eliminates such intervention relative to offices which lack 2/6 MF signalling capability but have ordinary push button dual tone MF signalling facilities. The system disclosed herein is illustrated in the drawing in block diagram. It utilizes a flexible switching matrix.