Top Microsoft Lync, Office Communications Server and Office Communicator Solutions from Microsoft Supporthttp://support.microsoft.com/ph/924The latest support information about Microsoft Lync, Office Communications Server and Office Communicator Solutions from Microsoft Product Support Services. Unified Communications Open Interoperability Program – Lync Serverhttp://technet.microsoft.com/en-us/lync/gg131938#phrssSetup and DeploymentThis program ensures that vendors providing interoperability with Microsoft unified communications solutions do so in a consistent and supportable manner, including SIP and signaling support used with the Mediation Service in Lync Server and the Voice Mail role of Exchange Server. Changes in Russian Daylight Savings Time can affect regional Microsoft Office Live Meeting Servicehttp://support.microsoft.com/kb/2640090#phrssRussia canceled DST starting 2011. Microsoft Knowledge Base article 2640090 lists DST and time zone changes you should be aware of when using Live Meeting Service inorder to make appropriate changes. Compare features across the delivery models for Lync Server 2010 (on-premises), Lync Online, and Office Communications Online ("OC Online").http://community.office365.com/en-us/w/lync/480.aspx#phrssPlanningThis web site can help you decide which delivery model has the features your organization requires. An update is available to clean up the bad state information of a user who uses an Office Communicator client to log on to a Lync Server 2010 serverhttp://support.microsoft.com/kb/2589546#phrssWhen users log on to a Lync Server 2010 server by using Office Communicator 2007 R2, the the presence information is sent to public instant message (IM) clients, such as Windows Live Messenger, AOL, or Yahoo. The hotfix in Microsoft Knowledge Base article 2589546 corrects this issue. Publishing the Lync Server 2010 Enterprise Edition topology fails when the Central Management Store is createdhttp://support.microsoft.com/kb/2422384#phrssLync Server 2010The topology builder in Microsoft Lync Server 2010 Enterprise Edition fails when the Central Management Store (CMS) databases are created on the Lync Server 2010 back-end server that is running Microsoft SQL Server. This content explains how to rectify the issue. How to run Lync Server 2010 in a virtualized environmenthttp://technet.microsoft.com/en-us/library/gg399035.aspx#phrssLync Server 2010This content explains how to configure Lync Server 2010 to run in a virtualized environment and provides detailed information on virtualization support and requirements. How to migrate from Office Communications Server 2007 R2 to Lync Server 2010http://technet.microsoft.com/en-us/library/gg413057.aspx#phrssLync Server 2010This content guides you through the process of migrating from Microsoft Office Communications Server 2007 R2 to Microsoft Lync Server 2010. If you intend for your Office Communications Server 2007 R2 deployment to coexist with a Lync Server 2010 deployment, this guide also includes some essential information for operating in this mixed environment. Capacity planning for Microsoft Lync Server 2010 http://technet.microsoft.com/en-us/library/gg399017.aspx#phrssLync Server 2010How to customize your Lync Server 2010 deployment to support various numbers of users and server loads.