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Jonathan Davidson

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communication fundamentals voice osi protocols voice over internet protocol telephony electronic engineering session initiation protocol ip multimedia subsystem signaling system 7 integrated services digital network simple gateway control protocol cisco computer networking internet computing cisco systems cisco career certifications cisco ios routers cisco unified communications manager

Published Books

Voice over IP Fundamentals (2nd Edition)

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August 2006

Deploying Cisco Voice over IP Solutions

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November 2001

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