Telephony

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* [http://www.b3ta.com/links/what_I_do_when_Im_not_on_here Video: Making phone call through 1950s electromechanical exchanges]
 
* [http://www.b3ta.com/links/what_I_do_when_Im_not_on_here Video: Making phone call through 1950s electromechanical exchanges]
 
* [https://archive.org/details/Bell_System_Coin_Service_Manual_Dec_1972 Bell System Coin Service Manual (1972)] - Everything you wanted to know about old-fashioned pay phones
 
* [https://archive.org/details/Bell_System_Coin_Service_Manual_Dec_1972 Bell System Coin Service Manual (1972)] - Everything you wanted to know about old-fashioned pay phones
 +
* [http://www.smithsonianmag.com/ideas-innovations/Theres-a-1200-year-old-Phone-in-the-Smithsonian-Collections-231152081.html 1200-year-old telephone]

Revision as of 00:04, 11 December 2013

File Format
Name Telephony
Ontology
Released 1876

Old-timey telephone

Old-timey telephone

Since Alexander Graham Bell invented the telephone in 1876, it has been a major feature in our lives, evolving from wired "Plain Old Telephone Service" (POTS) to now support a whole range of mobile phone protocols and Internet-based Voice Over IP (VOIP). AT&T introduced picturephones in 1964, but they didn't catch on then; however, various forms of video chatting are now commonplace to accompany traditional voice-only telephony.

See also Address books and contacts for formats used to store contact lists on mobile phones, and Audio and Music and Video for formats used to store sounds and moving images.

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