First transcontinental telephone call (3600 miles), with Thomas Augustus Watson at 333 Grant Avenue in San Francisco receiving a call from Alexander Graham Bell at 15 Dey Street in New York City is made.
The first experimental telephone exchange was based on the ideas of Tividar Puskás, and it was built by the Bell Telephone Company in Boston in 1877. He would go on to improve upon his invention, developing the multiplex switchboard.
On June 3, 1880 Alexander Graham Bell succeeded in transmitting a wireless voice telephone message using his photophone, an invention that allowed transmission of speech on a beam of light (the precursor to both fiber optic and wireless communications).
Johann Reis transfers voice electrically over a distance of 340 feet with his Reis telephone, using the phrase “The horse does not eat cucumber salad” as an example to prove that speech can be recognized at the receiving end because this phrase is hard to understand acoustically in German.
In 1856, Italian inventor Anthony Meucci developed a form of electromagnetic telephone to communicate from his laboratory to a bedroom in his house. He is often credited with inventing the telephone before Alexander Graham Bell.