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Audio Over IP by Skip Pizzi, Steve Church

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CHAPTER
VoIP Telephone Systems in the Studio Environment 6

Is it not a bit strange that many computer-laden, all-digital broadcast studios connect to the PSTN (Public Switched Telephone Network) using technology invented in the day of phones with hand-cranks and bulbous “ringers”? Where else in pro-audio do we mix two audio directions on a connection, forcing us to imperfectly pry the two apart in our interface gear? Where else do we use blasts of 100-AC volts for signaling? This becomes even stranger when you consider that the core of the telephone network is also digital, with sophisticated internal signaling systems and independent audio paths. Surely we can do better than this ancient bell-banging and analog audio mash-up stuff ...

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