TABLE OF CONTENTS Organizations that currently have Live Communications Server (LCS) 2005 and want to upgrade to Office Communications Server (OCS) 2007 have a defined upgrade path to follow. That path is simple, primarily because there is only one way to upgrade: Use the side-by-side method of migration. There is no in-place upgrade option of putting a CD into the old server and performing an upgrade. To perform a side-by-side upgrade, you must have a new OCS 2007 server set up and working; then you need to migrate user accounts and configure settings on the new OCS 2007 environment, and then decommission the old LCS 2005.
However, the migration process isn t as simple as replacing each LCS 2005 server one for one with a new OCS 2007 server. If it were that simple, I wouldn t have anything to write about in this chapter. Because the path for migration is well defined and has little flexibility, following the procedures outlined in this chapter will ensure a successful migration from LCS 2005 to OCS 2007.
To migrate from LCS 2005 to OCS 2007 you must follow a specific sequence of steps. Understanding this sequence is important. For example, if you upgrade an existing Microsoft Office Communicator (MOC) client to the new 2007 edition, the user will not be able to access LCS 2005 because MOC 2007 is incompatible with LCS 2005. Similarly, if you move a user to OCS 2007 and enable enhanced presence for...
