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San Francisco Telecomm Department history
San Francisco Telecomm Department company history timeline
The first subsea telegraph line opens between England and France (1850)
Then in 1878, the Bell affiliate in New Haven, Connecticut, opened the first commercial telephone exchange in the United States.
However, it wasn’t until the invention of the induction coil in 1899—a device that prevents signal distortion on longer lines – that the network was technically capable of spanning the entire continental United States.
Instead, the first phone link between Europe and America came by radio in 1927.
First binary digital computer (1939)
In 1956, the first transatlantic cable—TAT1—connected Scotland to Newfoundland, allowing for 35 simultaneous telephone calls and 22 simultaneous telegraph transmissions.
Discovery of cosmic microwave background radiation (1978)
SBC, one of the regional providers it was forced to spin-out in 1984, purchased AT&T Corporation and adopted its name.
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