Be careful using Lync Control Panel and Powershell together to manage Voice Routing
If you have an environment where you have multiple Lync administrators who manage voice routing, you may come across an issue where voice routes seemingly disappear. This can happen when an administrator using the Lync Control Panel commits changes after
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Read the complete post at http://www.expta.com/2011/01/be-careful-using-lync-control-panel-and.html