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History of PSTN

History of PSTN: Learning VoIP and Unified Communications
History of PSTN: Learning VoIP and Unified Communications

Lisa provides a brief history of the telephone and the PSTN (public switched telephone network), starting with the invention of the phone to the Bell Telephone Co. and then later AT&T, all of which delivered phone services to much of the country for many years.

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Skill Level Intermediate
1h 8m
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Skills covered in this course
Network Administration IT

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