The PreCallDiagTool is an application that reports expected audio quality as it relates to the network effect. The tool should be installed on any desktop or laptop PC that suffers from inconsistent network connection quality, and can provide a quick check of the current network conditions and also preserve a history of quality data to let users profile their network performance over time or other conditions. The tool is particularly useful for home/mobile users and users using WIFI access points. Note: This is the 32 bit version of the PreCallDiagTool. The 64 bit version can be found in the Office Communications Server 2007 R2 Resource Kit.

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