History of mobile phones
A cellular telephone switching plan was described by Fluhr and Nussbaum in 1973, and a cellular telephone data signaling system was described in 1977 by Hachenburg et al.
Rochester Telephone Corporation
Rochester Telephone got its start late in the nineteenth century. Alexander Graham Bell invented the telephone in 1875, and the following year he patented it and exhibited his device to great acclaim at the Philadelphia Centennial Exhibition. By July 1877, the telephone had made its way to Rochester, New York, where a line was strung between the offices of the Phillips Coal Company and its coal yards a mile and a half away. Following this precedent, in 1879, Rochester established two telephone companies, one a franchise of the American Bell Telephone Company, and one a part of the Edison company. The Bell affiliate, called the Rochester Telephonic Exchange, was a branch of the Bell Company of Buffalo.