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By 1920, assets were $1.4 billion; local revenue was $301 million; long-distance revenue was $142 million; profit was $48 million, and there were 231,000 employees. By 1950, assets had climbed to $10.3 billion; local call revenue was $2.0 billion and toll revenue was $1.2 billion, with a profit of $367 million, and 535,000 employees.
These made telephones an available and comfortable communication tool for many purposes, and it gave the impetus for the creation of a new industrial sector. The telephone exchange was an idea of the Hungarian engineer Tivadar Puskás (1844–1893) in 1876, while he was working for Thomas Edison on a telegraph exchange.
A telephone network is a telecommunications network that connects telephones, which allows telephone calls between two or more parties, as well as newer features such as fax and internet. The idea was revolutionized in the 1920s, as more and more people purchased telephones and used them to communicate news, ideas, and personal information. [1]
1 July 1881: The world's first international telephone call is made between St. Stephen, New Brunswick, Canada, and Calais, Maine, United States. [22] 11 October 1881: The Sydney telephone exchange opened with 12 subscribers. 1882: A telephone company—an American Bell Telephone Company affiliate—is set up in Mexico City.
In the early, small telephone networks, it was customary to initiate a connection to another subscriber by requesting the name of the desired party from the operator. While this method persisted into the 1920s in very small communities, [2] growth of the business soon made this impractical, and subscriber stations were assigned telephone numbers.
Kellogg company logo as used from the 1920s to the 1950s. The Kellogg Switchboard and Supply Company was an American manufacturer of telecommunication equipment. Anticipating the expiration of the earliest, fundamental Bell System patents, Milo G. Kellogg, an electrical engineer, founded the company in 1897 in Chicago to produce telephone exchange equipment and telephone apparatus.
As phone lines became more popular—between 1942 and 1962, the number of phones in the U.S. grew 230% to 76 million—telephone companies realized they would run out of phone numbers.
Western Electric deskstand telephone of the 1920s, a type of telephone often referred to as a candlestick; It featured a straight tubular shaft to hold the transmitter fixed, and a switch hook for hanging the receiver. It was the predecessor to generations of telephones using a handset.