Category Archives: Telephone
Today in 1865, the first International Telegraph Convention was signed in Paris by the 20 founding members, and the International Telegraph Union (ITU) was established to facilitate subsequent amendments to this initial agreement. Today, the ITU is the leading United Nations agency … Continue reading
Forty years ago today (April 3, 1973), Martin Cooper made a phone call from a prototype Dyna-Tac handheld cellular phone. The phone, which weighed about 2.5 lb, connected Cooper to Dr. Joel S. Engel, head of research at Bell Labs. Update: From “8 Guys, 6 … Continue reading
Today in 1891, Almon Brown Strowger was issued a patent for his electromechanical switch to automate telephone exchanges. Steven Lubar in InfoCulture: “…a Kansas City undertaker, Strowger had a good practical reason for inventing the automatic switchboard. Legend has it that his … Continue reading
Today in 1878, George Willard Coy and a group of investors from the District Telephone Company of New Haven published the world’s first telephone directory, a single sheet with only 50 names. Yes, another thing we don’t have because of technology. Here’s … Continue reading
Today in 1878, the first commercial switchboard began operating in New Haven, Connecticut. It served 21 telephones on 8 lines consequently with many people on a party line. On February 17, Western Union opened the first large city exchange in San Francisco. … Continue reading
Today in 1882, U.S. Patent No. 252, 576 for a “a new system for multiple [telephone] switchboards” was granted to Leroy B. Firman. For more on telephone switchboards, see here and here and here.
Today in 1894, New England Telephone and Telegraph installed the first battery-operated switchboard in Lexington, Massachusetts. With what became to be known as the “common battery” (replacing the local battery attached to the telephone), the subscriber could signal the operator simply by … Continue reading
June 15, 2018 will be the day in which the last telephone call will be made using the 140-year-old circuit switching network, established in 1878. IEEE Spectrum: “…a huge number of phone calls [today] start out as Internet packets and … Continue reading
Today in 2007, the first iPhone was released.