The History Of The Telephone

Telephone transmissions go the distance!

Jan 1, 1900

Telephone services finally can reach from city to city and across many regions.

First transcontinental call!

Nov 15, 1915

Alexander Graham Bell calls Watson in San Fransico to Newyork

Rotary Dialing Telephone

Feb 17, 1919

Made dialing a little bit easier for the everyday person

Frequency Multiplexing Concept

Sep 17, 1920

Allowed multiple phone calls at the same time

North American Numbering Plan

Nov 15, 1947

Assigned individual numbers to certain districts creating area codes and such district phone numbers.

First phone to combine a ringer and a handset

Aug 9, 1949

AT&T develops the model 500 which becomes an icon

Telstar 1

Jul 10, 1962

First Telephone communications sattelite is launched

Touch-tone telephone is introduced

Aug 18, 1963

Made phones make beeping sounds when dialed

First 911 call made

Feb 16, 1968

Was set as 911 for emergency because it did not include any area codes in U.S. or canada

Common channel interoffice signaling

Sep 1, 1976

Allows networked computers to communicate with eachother