1989Advanced TechnologyElectronics
Amos Edward Joel, Jr. photo

Amos Edward Joel, Jr.

  • U.S.A. / 1918-2008
  • Telecommunication Engineer
  • Former Executive Consultant, Bell Telephone Laboratories

Pioneering Contribution to the Electronic Switching Technology for Telecommunications, Especially that Based on the Concept of "Stored Program Control

A pioneer in the field of electronic switching for telecommunications. He proposed the basic concept of "Stored Program Control," and by combining new switching technology with computer technology, he opened the door to upgrading and freely modifying electronic switching to meet public needs. He has been a leader in the development and introduction of highly advanced modern electronic telecommunication networks throughout the world.
*This field then was Field of Electronics, Telecommunications, Lasers, and Control Engineering.


Brief Biography

Born in Philadelphia, Pennsylvania U.S.A.
Graduated From MIT
Joined Bell Telephone Laboratories (R&D Unit of Bell Systems)
Responsible for the developments of Traffic Service Position Systems (TSPS) and Automatic Intercept System (AIS)
Executive Consultant, Bell Telephone Laboratories
Retired from Bell Telephone Laboratories, Switching Consultant

Selected Awards and Honors

IEEE Alexander Graham Bell Medal
FRANKLIN INSTITUTE - Stuart Ballantino Medal
Honored by the City of Genoa - Columbian Medal
International Switching Symposium - Father of ISS Award

Major Works


Electronics in Telephone Switching Systems, Bell-System Technical Journal


Switching – Bell Laboratories Record


Electronic Switching Control Office Systems of The World (Editor) IEEE Press Book


Electronic Switching Digital Central Office Systems of The World (Editor) IEEE Press Book


Pioneering Contribution to the Electronic Switching Technology for Telecommunications, Especially that Based on the Concept of "Stored Program Control

Mr. Amos Edward Joel, Jr. has been a pioneer in the field of electronic switching for telecommunications networks. Having conceived and developed electronic switching technologies, he has long been a leader in spreading these technologies all over the world.

Especially noteworthy was Mr. Joel’s advocacy of the key concept of “Stored Program Control,” and with its proof he opened the door to the upgrading and free modification of the functions of electronic switching so as to meet public needs. It is no exaggeration to say that, without his ingenious concepts, it would have been impossible for the communications network to remain congruent with our diverse and highly technological society.

Telecommunications networks are the largest scale systems devised by mankind, exerting a great influence on economic and social life as well as related industries. The present worldwide telecommunications network based upon the telephonic network will adopt the ISDN (Integrated Service Digital Network) system as the infrastructure for the future’s advanced information society.

His first published research on the subject of electronic switching dates back to the September 1956 issue of the “Bell System Technical Journal,” where the key concept we identify with current electronic switching was already put forward. This is remarkably early when one considers computer technology itself was then limited solely to specialized calculations for science and technology. By 1965, the switching technology based on Stored Program Control was being utilized as the electronic switching system for the public communications network in the United States.

The influence of the development of electronic switching undertaken at Bell Laboratory has been globally significant. Since that time large-scale research has been undertaken in every nation. Research to enhance the capability of communications networks using such advances as the introduction of digital switching systems and the adoption of the Integrated Service Digital Network has also been ongoing in every country.

These achievements are due not only to Mr. Joel’s high intelligence and deeply specialized knowledge, but also to his warm sincere personality and executive ability. In 1987 he was honored as the “Father of the ISS International Electronic Switching Conference” and has been affectionately known as “Mr. Switching.”

During World War II, he invented the digital confidential communications system as well as the world’s first all-purpose digital computer, which is an indicator of the extent of his achievements in a wide range of fields. In view of the excellence and great societal influence of his electronic switching system, it is indeed fitting that he be amongst those selected as recipients on the occasion of the 1989 Kyoto Prizes.


Abstract of the Lecture

Creativity and Innovation in a Large System Environment: –A Personal Account–

Creativity in fields involving large systems has changed considerably during my lifetime. The subject area in which I have been most productive and made many inventions is called “switching”.

When I first became interested in switching, individual inventors made great creative contributions but were little recognized. My ambition was to change this so that not only would the contributions of individuals be recognized, but that the entire subject area was raised from an obscure art to a quasi-professional one. Today, the principles of switching are now generally understood, recognized, and accepted. Many contributors to this field are recognized and they have consciously extended the field in their search for new principles.

This lecture describes some personal experiences in the field of telecommunications switching. With systems costing in excess of one billion dollars to develop, the environment for creativity has changed. Thus I have distilled from my life experiences some behavioral patterns that might benefit those wishing to become more knowledgeable and creative in a field involving large and complex systems.

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Full Text(PDF)


Telecommunication Technology Innovation and its Influence on Society

November 12, 1989
Kyoto International Conference Center
Kohei Habara Member, Kyoto Prize Screening Committee in Advanced Technology; Executive Vice President, ATR International


Opening Remarks Kohei Habara
Greetings Kazuo Inamori
President, the Inamori Foundation
Greetings Yoshifumi Sakurai
Chairman, Kyoto Prize Screening Committee in Advanced Technology;
Vice President, Setsunan University
Introduction of Achievements Kohei Habara
Lecture Amos Edward Joel, Jr.
Laureate in Advanced Technology
"Overview of Telecommunication Switching Technological Advances ? Past, Present and Future"
Lecture Kenichiro Hirota
Special Advisor, Institute for Future Technology
"Social Influence of Telecommunications"
Lecture Hiroaki Terada
Professor, Faculty of Engineering, Osaka University
"Prospect of Multimedia Telecommunications"
Lecture Hiromasa Ikeda
Executive Manager, NTT Communication Switching Laboratories
"Telecommunication Switching Technologies toward Future Society"
Lecture Tadao Saito
Member, Kyoto Prize Screening Committee in Advanced Technology;
Professor, Faculty of Engineering, the the University of Tokyo
"Future Vision of Telecommunication for Information Society"
Panel Discussion