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Repost: Desktop video conference preparation: How to calculate bandwidth

Video conferencing is a challenging application for business networks. Not only does it require assured bandwidth per call, but it needs very low packet loss ( less than .1% over 5 minutes) and tightly controlled jitter (less than 40 milliseconds). Meeting these requirements on a converged network requires that Quality of Service (QoS) be implemented end-to-end. To prevent the oversubscription of bandwidth, video conferencing also requires either call admission control (CAC) or carefully calculated bandwidth for every call. – Stephen K. Campbell


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