The Lync PreCall Diagnostic Tool (PCD) is a client-based application that allows you to see how the current state of your network might impact the audio quality in an upcoming Enterprise Voice call. The PCD tool was originally released for Office Communications Server 2007. This is a new version of the tool designed specifically for Windows 8.
PCD is most useful in situations where the last hop of a network is likely to be the weakest (for example, with laptops on a public WiFi network or home users). PCD creates a small packet stream that traverses this final leg of the network. The tool then analyzes the packet stream to estimate how the jitter and loss along this leg might impact call quality, and then provides a report. You can run PCD continuously on the client, even while calls are being placed. The packet stream does not have a significant effect on bandwidth.
You can download the Windows 8 version of the tool from here: http://apps.microsoft.com/windows/en-us/app/9607fe33-2b51-403d-9615-c23f248e7c88
More information about the Windows 8 version of the tool is also available in the TechNet Library here: http://technet.microsoft.com/en-us/library/dn451255.aspx
If you want to use a previous version of the PCD, see the following:
- The 32-bit version of the PCD is available as a free download from the Microsoft Download Center at Office Communications Server 2007 R2, PreCallDiagnostic Resource Kit Tool (32 Bit).
- The 64-bit version of the PCD is included with the Office Communications Server 2007 R2 Resource Kit Tools, which are available as a free download at the Microsoft Download Center at Office Communications Server 2007 R2 Resource Kit Tools.
The TechNet Library topics for the earlier version of the tool is here: http://technet.microsoft.com/en-us/library/dd572403(v=office.13).aspx