Telephone History

Alexander Graham Bell discovered he could hear sound over wire

Nov 2, 1875

Telephone timeline

Period: Nov 2, 1875 to Nov 2, 2050

Telephone invented by Bell

Nov 2, 1876

Bell system companies begin to install switching systems and rotary dial telephones

Nov 2, 1919

Bell Labs and AT&T develop the north american numbering system

Nov 2, 1947

Touch tone telephone is introduced with 10 push buttons

Nov 2, 1963

The 10 button phone is soon replaced with a 12 button phone with * and #.

1st 911 call made

Nov 2, 1968

First portable cell phone made by Martin Cooper of Motorola

Nov 2, 1973

100 million cellular telephone subscribers

Nov 2, 2000

Lots of new super high-tech phones made like the leaf phone

Nov 2, 2050

Citations

Nov 5, 2055

Works Cited
Bells, Mary. "Inventors." About.com. About.com, 2012. Web. 30 Oct. 2012. http://inventors.about.com/.
First portable cell phone by Motorola. Digital image. Is Your Smartphone a Reflection of You? Wordpress, n.d. Web. 30 Oct. 2012. <rangaprabhu.com>.
First telephone. Digital image. Martinez Historical Society. N.p., n.d. Web. 30 Oct. 2012. <martinezhistory.org>.
"Greatest Engineering Achievements of the Twentieth Century." Greatest Engineering Achievements of the Twentieth Centu