How to Enable Unified Messaging on Exchange 2007

Microsoft Exchange Server 2007 will reach end of support on April 11, 2017. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.


Applies to: Exchange Server 2007, Exchange Server 2007 SP1, Exchange Server 2007 SP2, Exchange Server 2007 SP3

Topic Last Modified: 2007-07-27

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to enable Microsoft Exchange Server 2007 Unified Messaging (UM). You must enable the Exchange Server 2007 computer that is running the Unified Messaging server role before the Unified Messaging server can process calls for UM-enabled Exchange Server 2007 recipients in your Exchange organization.

Although, by default, the Unified Messaging server is in an enabled state after the Unified Messaging server role is installed, the UM server also has a status parameter that can be used to enable or disable functionality of the UM server. The UM server status is controlled by the Enable-UMServer and Disable-UMServer commands. The UM server must also be added to a UM dial plan before it can process calls for Unified Messaging. For more information about how to add a UM server to a UM dial plan, see How to Add a Unified Messaging Server to a Dial Plan.

To perform this procedure, the account you use must be delegated the Exchange Server Administrator role and membership in the local Administrators group for the target server.

For more information about permissions, delegating roles, and the rights that are required to administer Exchange 2007, see Permission Considerations.

Also, before you perform these procedures, confirm the following:

  • A UM dial plan has been created.

  • The UM server status is set to disabled.

  1. In the console tree of the Exchange Management Console, expand the Servers node, and then click the Unified Messaging node.

  2. In the result pane, select the Unified Messaging server to enable.

  3. In the action pane, click Enable UM Server.

  • Run the following command:

    Enable-UMServer -Identity UMserver12

For more information about syntax and parameters, see Enable-UMServer.