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A jazz musician named Teri Pall invented a version of the cordless phone in 1965 but could not market her invention, as its 2-mile (3.2 km) range caused its radio signals to interfere with aircraft communications. In 1968, she sold her rights to the cordless phone to a manufacturer who modified it for practical use.
The telephone was invented in 1876 by Alexander Graham Bell. Scottish born Bell was a teacher for the deaf at Boston University. In researching ways to teach the deaf, he experimented with transmitting sound via electricity. Teaching by day, he spent many hours of his spare time, developing a form of telephone.