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Skype 1.0 - The Impact of Network Bandwidth on Codec Bandwidth Selection
The Tolly Group, Nov 2005, Pages: 17
An analysis of the bandwidth usage of Skype VoIP conversations when running across wide area networks of varying bandwidth.
Understanding the bandwidth requirements of a given application is a key requiremets. Skype documentation provides only general guidance as to expected bandwidth usage. The documentation states that the bandwidth is determined dynamically by the Skype software based on, among other elements, the bandwidth available between the clients.
Network architects need to be able to plan for the bandwidth requirements for potentially high-volume applications like Skype. This report benchmarks the bandwidth utilization between a single pair of Skype clients as the (simulated) WAN between them varies from narrowband (28.8) to broadband (10Mbps). This will provide some fundamental insights into expected load.
Key Observation Topics
-Codec Selection Sensitivity to Network Bandwidth
-Information on Codec Use
-Bandwidth/Codec Configuration
-Silence Suppression
-Stealth Processing
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