Hi
A voice policy provides a list of calling features that you can enable or disable. A PSTN usage record specifies a class of call (such as internal, local, or long distance) that can be made by various users, or groups of users, in an organization.
In order to allowed/denied workload among end-points, you can try to use Ethical Wall for Lync:
http://www.multiux.com/products/multiux-ethical-wall-for-lync.html
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