Title :
Application of Touch-Tone calling in the Bell system
Author :
Benson, M. L. ; Crutchfield, F. L. ; Hopkins, H. F.
Author_Institution :
American Telephone and Telegraph Company, New York, N. Y.
fDate :
3/1/1963 12:00:00 AM
Abstract :
A new system of initiating telephone calls employing voice-frequency tones, controlled by actuating buttons, and known as ¿Touch-Tone Calling¿ is now in service on a trial basis. The resultant marked improvement in speed and ease of use appears to appeal strongly to telephone users. This system is described and the engineering and psycho-physical steps necessary to its development are outlined. Field tests of system feasibility and results obtained are discussed. Three companion papers present technical features of the system components.
Keywords :
Central office; Frequency measurement; Media; Receivers; Switches; Switching systems;
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
DOI :
10.1109/TCE.1963.6373291
