Topic Last Modified: 2011-03-23

This topic contains the recommended client deployment steps you should take prior to migrating to Microsoft Lync Server 2010. These configuration changes should be made on Office Communications Server 2007 R2. It is very important that you perform these steps prior to migrating. For details, see Planning for Client Migration.

To configure clients prior to migration

  1. Deploy the most recent server, client, and device updates (hotfixes) for Microsoft Office Communications Server 2007 R2 as listed in Apply Office Communications Server 2007 R2 Updates.

  2. On Office Communications Server 2007 R2, use Client Version Filtering to allow only clients with the most current updates installed, as listed in Apply Office Communications Server 2007 R2 Updates to sign in.

  3. On Office Communications Server 2007 R2, use Client Version Filtering to block Lync Server 2010 clients from signing in. Follow the steps described in Configuring Client Version Filtering at http://go.microsoft.com/fwlink/?LinkId=202488 to add the version filters listed in the following table. For each version filter, assign the action Block.

    Client User agent header Version

    Lync 2010

    OC

    4.*.*.*

    Lync Web App

    CWA

    4.*.*.*

    Lync 2010 Phone Edition

    OCPhone

    4.*.*.*