How to Modify the Number of Concurrent Calls Setting
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
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.
Note
The range for the number of concurrent voice calls is 0 to 200. The default setting is 100.
Before You Begin
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.
Procedure
To use the Exchange Management Console to configure the number of concurrent connections on a Unified Messaging server
In the console root, expand the Microsoft Exchange node, expand the Server Configuration node, and then click the Unified Messaging node.
In the result pane, click to select the Unified Messaging server that you want to configure.
In the action pane, click Properties.
On the UM Settings tab, under the Maximum concurrent calls section, in the data field, type the maximum number of concurrent voice calls.
Click OK.
To use the Exchange Management Shell to configure the number of concurrent connections on a Unified Messaging server
Run the following command:
Set-UMServer -Identity MyUMServer1 -MaxCallsAllowed 50
For more information about syntax and parameters, see Set-UMServer.
For More Information
For more information about how to install the Unified Messaging server role, see How to Perform a Custom Installation Using Exchange Server 2007 Setup.
For more information about how to modify the number of concurrent calls on a Unified Messaging server, see How to Modify the Number of Concurrent Fax Calls Setting.