Eric Eden Sumner (December 17, 1923 – January 19, 1993) was an Austrian-American engineer and scientist, well known for hiscontributions to the early developments of switching systems. Born in Vienna, he moved to New York City where he went toBrooklyn Technical High School, earned a B.S. in mechanical engineering from Cooper Union (1948),and M.A. degrees in physics (1953) and electrical engineering (1960) from Columbia University .Sumner joined Bell Labs (1948) where he became leader of the group that developed thepulse-code modulation transmission system (1955), and later director of transmission systems (1960) that developed the T1 carrier system (1962).Following this, he led the underwater transmission laboratory projects on submarine surveillance systems (1962–67),the transmission medi
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