Chapter 12: Circuit Switching and Packet Switching - PowerPoint PPT Presentation

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Chapter 12: Circuit Switching and Packet Switching

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Telephone ring signal. Transmission of billing information ... are audible tones that can be heard by the caller or an operator with the proper ... – PowerPoint PPT presentation

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Provided by: ElizabethL173
Learn more at: http://web.nchu.edu.tw
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