Brendan ProutBrendan Prout

EDUC515 EDUC515

Azusa Pacific University: San Diego Regional Azusa Pacific University: San Diego Regional CenterCenter

Master of Educational Technology ProgramMaster of Educational Technology Program

Professor Jeff McKendricksProfessor Jeff McKendricks

Summer 2009Summer 2009

History of the Phone: History of the Phone: Development of Telecommunications Development of Telecommunications

in Societyin Society

History of the Phone

development of telecommunications in society

Early History

• Telegraph: 1 or 0 signal only, 1840’s• 1844: first reports of sound transmissions

over telegraph wires• 1854 – 1876: various patents for sound

telegraph• Early 1870’s: Alexander Graham Bell

begins experimenting• 10 March 1876: Bell makes first phone call

on his system and patents telephone

1890’s

• “Candlestick” receiver phone • Beginning of networks• Manual connections & operators

1960’s

• 1960’s: beginning of digital transmission and switching

• allowed more bandwidth on existing lines• multiplexing• rotary dial phone commonplace

1970’s

• pushbutton dial phone

Phone meet Internet

1990’s: VoIP digital phone over internet

nearly 10% of subscribers worldwide

2006: nearly 4 billion mobile and fixed line users, over 1 billion VoIP users worldwide

Wireless Phones

• 1908: first wireless phone system “Cave phone”

• 1944: radio phones used in WWII

• 1945: first cell phone

• 1947 first networked cell phone transmitter sites built by AT&T

1973

first handheld wireless phone call made by Martin Cooper

Cell Phone comes of age

• 1979: first commercial wireless network (Japan)• 1983: first cell phone approved for use in USA

(Motorola DynaTAC)

Popularity grows

• 1984 – 1990: car phones• 1991: 2G networks implemented, handhelds

become inexpensive

More than a phone

• 1999: Internet service provided on cell phones (Japan)

• 2001: 3G networks launched

Technological progression

From voice to broadband communications

Smartphones

Influencing Society

Student UseMany schools has set restrictions on the use of mobile phones

because of the use of cell phones for cheating on tests, harassing other people, causing threats to the schools security, and causing gossip and other drama in school.

Many mobile phones are banned in school locker room facilities and in public restrooms. New camera phones are required to have a shutter effect when a photo is taken.

…Next???