Topic Last Modified: 2010-11-07

Microsoft Lync Server 2010 communications software introduces a new user sign-in mode that enables you to take a server offline (for example, to apply software or hardware upgrades) without any loss of service to users. You can set user sign-in mode to stop a server from taking new connections and calls.

When you specify a Front End Server to not accept new connections, the behavior for existing sessions depends on the type of session. For many Front End Server sessions, such as conferences and peer-to-peer calls , the session is seamlessly transferred to another server in the pool while in progress. For other features, such as Response Group application, existing connections on the server continue until they naturally end. When all existing sessions have ended, the server is ready to be taken offline.

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