Timeline Filter by: Decade or Famous Calls The Network The Business
Heaviside discovers inductive loading for telephone lines
Oliver Heaviside
1887
Columbia Dry Cell Battery introduced, making liquid phone batteries obsolete
Columbia Dry Cell Battery introduced, making liquid phone batteries obsolete
1896
Pupin loading coils patented
Pupin loading coils patented
1900
First multiplexed telephone circuits
1910
First transcontinental phone call (between Bell and Watson)
Alexander Graham Bell Bancroft Gherardi Jr. Thomas A. Watson
1915
Type C carrier system deployed
1922
Coaxial cable patented by Espenschied and Affel
Lloyd Espenschied
1929
Submarine Cable Systems Development
Submarine Cable Systems Development
1958
Kao proves fiber optics can carry telephone signals
Charles K. Kao
1966
Lightwave (AT&T)
Lightwave (AT&T)
1977
How to Install Modular Jacks by Yourself (AT&T)
How to Install Modular Jacks by Yourself (AT&T)
1984
TAT-8: First transatlantic fiber optic cable
1988
TPC-3: First transpacific fiber optic cable
1989