The first commercially viable telephone network was created by a Boston inventor and entrepreneur. Not Alexander Graham Bell, who is credited with inventing the telephone, but Edwin Thomas Holmes. Starting in the 1850s, his father Edwin Holmes created the first burglar alarm company here in Boston, then Edwin Thomas Holmes adapted the alarm company’s network of telegraph wires in the 1870s to work with the telephone switchboard he invented. Working with Alexander Graham Bell, the Holmes company turned his invention into a business and helped him build the Bell Telephone Company.

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