Alexander Graham Bell had long been fascinated by the idea of transmitting speech, and by 1875 had come up with a simple receiver that could turn electricity into sound. On January 28, 1878, two years after Alexander Graham bell was awarded a patent on his primitive telephone, the world's first commercial telephone exchange opened for business in New Haven, Connecticut. George W. Coy, Herrick P. Frost and Walter Lewis, with a great deal of courage, some makeshift equipment, and $600 of borrowed money, put Mr. Bell's wonderful invention to work. Their enterprise was called the District Telephone Company of New Haven.

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