How to Remove a Unified Messaging Server from a Dial Plan

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: 2009-01-27

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to remove a computer on which the Microsoft Exchange Server 2007 Unified Messaging (UM) server role is installed from a UM dial plan. When you remove an Exchange 2007 Unified Messaging server from a UM dial plan, the Unified Messaging server will no longer answer calls or process UM calls for Exchange 2007 UM-enabled recipients.

To process calls, an Exchange 2007 Unified Messaging server must be added to at least one UM dial plan. However, an Exchange 2007 Unified Messaging server can be added to multiple UM dial plans.

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 Unified Messaging server has the languages installed that are required by the UM dial plan.

  • The Unified Messaging server has been added to at least one UM dial plan.

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

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

  3. In the action pane, click Properties.

  4. On the UM Settings tab, in the Associated Dial Plans section, click Remove.

  5. In the confirmation dialog box, click Yes to confirm the deletion of the Exchange 2007 server from the UM dial plan.

  6. Click OK to close the properties window.

  • Run the following command:

    Set-UMServer -Identity umserver12 -DialPlans $null

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