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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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Creating Bypass IDs

All Lync network sites have a Bypass ID parameter assigned that is used to determine whether a client can use Media Bypass between itself and a trunk. This determination is based on comparing the Bypass ID of the trunk with the Bypass ID of the Lync endpoint.

In a new environment all network sites share the same Bypass ID, which means Media Bypass can be used between any site. After a site has a bandwidth policy applied, it is assigned a unique Bypass ID, but the other sites all retain the same, shared Bypass ID.

Media Bypass is blocked only if there is a bandwidth constraint between the two sites, so to prevent Media Bypass from being used between two sites, an administrator must associate a bandwidth policy to either network ...

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