Nortel Networks NN43001-121 manual Migrating users from LCS to OCS, Step Action

Migration planning from LCS 2005 to OCS 2007 89

Migrating users from LCS to OCS

Step Action

1Upgrade your perimeter network by deploying an Access Edge Server that communicates with Live Communications Server

2005 Director. When Director is not deployed, the edge server communicates directly with your internal Live Communications Server 2005 Standard Edition servers or Enterprise pool and the new Access Edge Server is configured as the next hop server to which existing pools and Standard Edition Servers will route external traffic. Next, an Office Communications Server 2007 Director is deployed to replace Live Communications Server 2005 Director. Incoming and outgoing traffic is configured to go through the new Director (if a Director was previously not used and you do not want to use one now, this step can be skipped). For more information, download Microsoft technical documentation from the Download Center at www.microsoft.com.

2In this phase, an internal Office Communications Server 2007 Standard Edition Server or Enterprise pool is deployed. Move an initial group of users to the new server or pool but they will continue to use OC 2005 as their client. If required, deploy an Archiving and CDR Server. DNS update is required next. For more details, see "LCS 2005 and OCS 2007 coexistence" (page 82).

3Upgrade CS 1000 and if determined for your migration, add an additional Signaling Server as the SIP CTI FE. Upgrading Call Sever and Signaling Server according to standard procedures. For more information, see "LCS 2005 and OCS 2007 coexistence" (page 82).

4Deploy OCS 2007 Mediation Server. For more information on deploying Mediation Server, download Microsoft technical documentation from the Download Center at www.microsoft.com.

5Deploy OCS Proxy server with MCM 3.0 . For more information, see "OCS Proxy server installation" (page 107) and "MCM installation" (page 109).

6Enable enhanced presence and continue migrating users. Start to move users from Live Communications Server 2005 to Office Communications Server 2007. By enabling enhanced presence, users are allowed to use Office Communicator 2007 and the new functionality that it provides. After enabling the users for enhanced presence, roll out OC 2007 client to each computer for these users. Once a user is enabled for enhanced presence, they can no longer use any previous client versions. For more information on enhanced presence, download Microsoft technical documentation from the Download Center at www.microsoft.com.

Nortel Communication Server 1000

Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007

NN43001-121 01.03 Standard

Release 5.0 30 April 2008

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