LCS 2005 to Lync 2013 Cut over migration – Challenges

First of all, there is a potential risk involved in cut-over migration from LCS 2005 to Lync 2013 and it is not supported by Microsoft. Purpose of this blog is to understand the direct migration path from LCS 2005 to Lync 2013 RTM and reveal  the challenges. I have successfully deployed a standard LCS 2005 server….


Schedule Office 365 Lync-online conference using on-premise exchange mailbox

This is not a hybrid deployment scenario. Lync online and exchange on-premise are isolated domains.  I have deployed on-premise exchange server with SMTP domain called ‘’ and Office 365 Trial domain is’. I have configured outlook and Lync-online on the same client machine. Downloaded and installed outlook conference Add-in. When I tried to schedule…


Lync Server 2013 Preview – High Availability Test

The aim of this test is to understand Lync 2013 (Preview) client behavior during an infrastructure failure. My lab environment consists of Lync 2013 (P) EE Pool with two frontend servers, dedicated SQL backend server and two Lync 2013 (P) clients.   Scenario-1 –  Primary Frontend Server went down Lync 2013 (P) client has been successfully connected…


Lync server 2013 Preview – Major Server Features – Quick reference guide

I have only listed major features or architecture changes introduced on Lync server 2013 preview compared to Lync server 2010. Hope it would be helpful.   Audio video conference server role is always collocated with frontend server. Monitoring archiving server roles can also be part of Lync frontend server. New persistent group chat server roles have been…