Applies to: Exchange Server 2007
Topic Last Modified: 2007-10-17

Use the Dialing Restrictions tab on the Unified Messaging (UM) mailbox policy properties to configure dialing rules for UM-enabled users who are associated with this UM mailbox policy. Unified Messaging mailbox policies are required to enable users for Unified Messaging. They are useful for applying and standardizing Unified Messaging configuration settings for UM-enabled users. You can create UM mailbox policies to apply a common set of policies or security settings to a collection of UM-enabled mailboxes.

You can use these settings to control the extension numbers that can be reached by UM-enabled users who are associated with the UM mailbox policy or control the telephone numbers that can be dialed by UM-enabled users who are associated with the UM mailbox policy.

Allow calls to users within the same dial plan
  • Select this check box to allow UM-enabled users who call in to a subscriber access number that is configured on a dial plan and successfully log on to their mailbox to place calls or transfer to users who have extension numbers that are associated with another UM-enabled user within the same dial plan. By default, this setting is enabled.

  • When you disable this setting, UM-enabled users who call in to a subscriber access number that is configured on a dial plan and successfully log on to their mailbox will be able to place calls or transfer to any non UM-enabled users or other extension numbers that are not associated with a UM-enabled user but will be unable to transfer users to other UM-enabled users who are within the same dial plan. This is because the Allow calls to extensions setting is enabled by default.

Allow calls to extensions
  • When this setting is enabled, users who call in to a subscriber access number that is configured on a dial plan and successfully log on to their mailbox can place calls to non UM-enabled users, other extension numbers that are not associated with a UM-enabled user, and to UM-enabled users within the same dial plan. This is because the Allow calls to users within the same dial plan setting is enabled by default.

  • When this setting is disabled, users who call in to a subscriber access number configured on a dial plan and successfully log on to their mailbox cannot place calls to non UM-enabled users or other extension numbers that are not associated with a UM-enabled user. However, they can place a call or transfer calls to extension numbers that are associated with UM-enabled users. This is because the Allow calls to users within the same dial plan setting is enabled by default. By default, the Allow calls to extensions setting is enabled.

  • You can enable this setting in an environment where not all users have been UM-enabled. This setting is also useful when you want to allow users who call in to a subscriber access number that is configured on a dial plan to call extension numbers that are not associated with a UM-enabled user.

Select allowed in-country/region rule groups from dial plan
  • Use this section to add or remove allowed in-country/region dialing rule groups. By default, there are no in-country/region dialing rule groups configured on UM mailbox policies.

  • In-country/region dialing rule groups are used to allow or restrict the telephone numbers within a country or region that Outlook Voice Access users can dial. This helps prevent unnecessary or unauthorized telephone calls and charges.

  • To add in-country/region dialing rule groups, you must first create the appropriate in-country/region dialing rule groups on the dial plan that is associated with the UM mailbox policy, and then add the appropriate dialing rule entries on the dialing rule groups. After you have created the required dialing rule groups on the dial plan, you must then add the dialing rule groups to the list of dialing restrictions on the Dialing Restrictions tab on the UM mailbox policy.

  • In-country/region dialing rule groups can be used to enable a Unified Messaging server to allow or restrict access to telephone numbers within a country or region. This is applied to Outlook Voice Access users who have called in to a subscriber access number.

Select allowed international rule groups from dial plan
  • Use this section to add or remove allowed international dialing rule group names. By default, there are no international dialing rule groups configured on UM mailbox policies.

  • To add international dialing rule groups, you must first create the appropriate international dialing rule groups on the dial plan that is associated with the UM mailbox policy, and then add the appropriate dialing rule entries on the dialing rule groups. After you have created the required dialing rule groups, you must add the dialing rule groups to the dialing restrictions on the UM mailbox policy.

  • International dialing rule groups can be used to enable a Unified Messaging server to allow or restrict access to telephone numbers outside a country or region. This is applied to Outlook Voice Access users who have called in to a subscriber access number.

  • International dialing rule groups are used to allow or restrict the telephone numbers outside a country or region that Outlook Voice Access users can dial. This helps prevent unnecessary or unauthorized telephone calls and charges.

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