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How to Modify the Number of Concurrent Calls Setting

 

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

Topic Last Modified: 2007-08-19

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to configure the number of incoming concurrent voice call connections that a Microsoft Exchange Server 2007 Unified Messaging (UM) server will accept. When you increase the number of concurrent connections on a Unified Messaging server, more system resources are required than if you decrease the number of concurrent voice call connections. Decreasing this setting is especially important on low-end, slower computers on which Exchange 2007 Unified Messaging is installed.

noteNote:
The range for the number of concurrent voice calls is 0 to 200. The default setting is 100.

To perform this procedure, the account you use must be delegated the Exchange Organization Administrator role.

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

  1. In the console root, expand the Microsoft Exchange node, expand the Server Configuration node, and then click the Unified Messaging node.

  2. In the result pane, click to select the Unified Messaging server that you want to configure.

  3. In the action pane, click Properties.

  4. On the UM Settings tab, under the Maximum concurrent calls section, in the data field, type the maximum number of concurrent voice calls.

  5. Click OK.

  • Run the following command:

    Set-UMServer -Identity MyUMServer1 -MaxCallsAllowed 50
    

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

 
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