Title :
Applications of touch-tone calling
Author :
Benson, M. L. ; Crutchfield, F. L. ; Hopkins, H. F.
Author_Institution :
American Telephone & Telegraph Company, New York, N. Y.
fDate :
4/1/1962 12:00:00 AM
Abstract :
“Touch-Tone Calling,” a system for initiating telephone calls by means of voice-frequency tones controlled by actuating buttons, is now in service on a trial basis. The resultant marked improvement in speed and ease of use appeal strongly to telephone users. Results of field tests of system feasibility are discussed
Keywords :
Central office; Electrical engineering; Laboratories; Receivers; Switches; Switching systems;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1962.6446830
