Co-existence of IBM Sametime and Microsoft LCS\OCS:

By default Sametime and LCS\OCS don’t work together. It means a Microsoft office Communicator (MOC) user can’t communicate with the Sametime user. You need to use a third party solution to enable the same.

There are two tools (what I know!) to enable the co-existence of Sametime and LCS\OCS. Convergence Session Manager (CSM) from Convergence and Instant Buddy list Migrator from Instant technologies.

Convergence Session Manager (CSM) acts as an intermediate device between the LCS\OCS and Sametime setup.

Instant Buddy List Migrator’s integration with Session Manager from Convergence enables Sametime users and LCS/OCS users to belong to single, unified buddy lists so they can communicate seamlessly across platforms.

Mostly you would use the internetworking of LCS\OCS and Sametime due to following two reasons:

• If a company with Sametime setup wants to federate with a company having LCS\OCS setup

• If a company having Sametime setup wants to migrate to LCS\OCS setup. In this case the company needs to afford the co-existence period.

See how to migrate contact list from Sametime to LCS\OCS.

Related Links:

Solution brief by Convergence
Instant Buddy List Migrator
Cross Platform Communication notes by Convergence