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TTS VoIP Project January 6, 2015. Tufts Professor Amos Emerson Dolbear Invented the Telephone at Ballou Hall 1864:Dolbear invented a “talking machine”

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Presentation on theme: "TTS VoIP Project January 6, 2015. Tufts Professor Amos Emerson Dolbear Invented the Telephone at Ballou Hall 1864:Dolbear invented a “talking machine”"— Presentation transcript:

1 TTS VoIP Project January 6, 2015

2 Tufts Professor Amos Emerson Dolbear Invented the Telephone at Ballou Hall 1864:Dolbear invented a “talking machine” identical to Bell’s original electromagnetic receiver and transmitter – a sound-powered telephone. If Dolbear had patented his device, Alexander Graham Bell would never have been heard of :The first phone call was made by Tufts professor, Amos Dolbear, from Ballou Hall. Dolbear already had a working telephone when he became a professor in It connected his lab in Ballou to his home on Professors Row and allowed him to alert Mrs. Dolbear when he was on his way home for lunch. 2

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4 But someone beat him to the patent office... Permanent Magnet Receiver Even though Bell was making substantial progress, Dolbear believed he was about to cash in. “Let us make some money,” his friend Percival Richards told him. But Dolbear’s aspirations for short-term gains were dashed. In the first week of January 1877, he learned that Bell had constructed a telephone device employing roughly the same technology Dolbear had used—and Dolbear was led to believe that Bell had already patented it. When Dolbear later found out that Bell didn’t apply for his patent until January 15, 1877, he suspected foul play. “I suppose that I shall lose both the honor and the profit of the invention,” he fretted Tufts Magazine, Spring 2001, Daniel Gross US US Electric Telegraphy (permanent magnet receiver) by Alexander Graham Bell, January 15, : Circuit Court of the United States : American Bell Telephone Company v. Amos E. Dolbear 1886: Supreme Court of the United States : Amos E. Dolbear vs. The American Bell Telephone Company

5 We almost had Dol-Beariphone.

6 Telephony Development POTS CO BORSCHT Copper Tip & Ring PSTN ANALOG TDM DTMF PBX PRI Fiber PSTN DIGITAL SIP CODEC RTP Softphone ACL PSTN VoIP

7 Cisco Unified Call Manager (CUCM) 10 Devices Mobility Video phone Find Me Follow Me Jabber phone Click to Call Integration Web Ex Jabber Five 9’s Scalable Reliability Seamless Transition Distributed Redundant Personal

8 CUCM Transition Plan PoC Integration with Avaya PBX Integration with Exchange UM Fully functioning architecture and features TTS All TTS staff and locations – TTS Medford transition completed LDAP integration Self provisioning 574 Complete VoIP infrastructure Early adopter audience Beginning of enterprise-wide transition

9 VoIP Architecture

10 References 1.-- The Telephone and Its Several Inventors: A History, by Lewis Coe, p.42 2.http://giving.tufts.edu/pdf/tfgo_resources_tuftsPride.pdfhttp://giving.tufts.edu/pdf/tfgo_resources_tuftsPride.pdf 3.Tufts Magazine, Spring 2001, Daniel Gross 4.http://www.pcmag.com/encyclopedia/term/37757/analog- telephony 5.http://www.morpheustechnology.com/ebooks/Digital/04%20 Telephone%20Circuits.htm#_4.1_Voice_Circuitshttp://www.morpheustechnology.com/ebooks/Digital/04%20 Telephone%20Circuits.htm#_4.1_Voice_Circuits


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