Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-08-20

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to enable or disable outgoing calls for a UM IP gateway in Microsoft Exchange Server 2007 Unified Messaging (UM). By default, when you create a UM IP gateway, it will allow UM-enabled users to place outgoing calls, or "dial out", of the UM-enabled user's dial plan. Outdialing is the term that is used to describe a situation in which a user in one UM dial plan initiates a call to another UM-enabled user in another dial plan or to an external telephone number. If you disable outgoing calls on a UM IP gateway, users who are associated with the dial plan will be unable to make outgoing calls through the IP gateway that is defined in the Address field on the properties for the UM IP gateway.

Outdialing enables UM-enabled users to initiate calls from inside an organization that has Exchange 2007 Unified Messaging. For outdialing to function correctly, certain settings must be configured. These settings include the following:

To allow outdialing for UM-enabled users, you must:

When you select the Allow outgoing calls through this UM IP gateway check box on the properties for the UM IP gateway, you configure the UM IP gateway to accept and send outgoing calls to an IP gateway. If you clear the check box, you prevent the UM IP gateway from sending outgoing calls to an IP gateway. Although the Allow outgoing calls through this UM IP gateway setting controls whether the IP gateway is able to initiate outgoing calls for users, it does not affect call transfers or incoming calls from an IP gateway.

Before You Begin

To perform the following procedures, the account you use must be delegated the Exchange Organization Administrators role.

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.

  • A UM IP gateway has been created

Procedure

To use the Exchange Management Console to enable or disable outgoing calls for a UM IP gateway

  1. In the console tree of the Exchange Management Console, expand the Organization Configuration node.

  2. Click Unified Messaging.

  3. In the work pane, click the UM IP Gateways tab.

  4. Select the UM IP gateway that you want to modify, and then, in the action pane, click Properties.

  5. To enable outgoing calls on a UM IP gateway, on the UM IP Gateway Properties page, select the check box next to Allow outgoing calls through this UM IP gateway.

  6. To disable outgoing calls on a UM IP gateway, on the UM IP Gateway properties page, clear the check box next to Allow outgoing calls through this UM IP gateway.

  7. Click OK to save your changes.

To use the Exchange Management Shell to enable or disable outgoing calls for a UM IP gateway

  • To enable outgoing calls on a UM IP gateway, run the following command:

    Copy Code
    Set-UMIPGateway -Identity MyUMIPGateway -OutcallsAllowed $true
    
  • To disable outgoing calls on a UM IP gateway, run the following command:

    Copy Code
    Set-UMIPGateway -Identity MyUMIPGateway -OutcallsAllowed $false
    

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

For More Information

For more information about UM IP gateways, see the following topics: