Organization Configuration > Unified Messaging > UM Dial Plans > Dialing Restrictions Tab

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

Use the Dialing Restrictions tab on the Unified Messaging (UM) dial plan properties to configure dialing rules for callers who call in to a subscriber access number that is configured on a UM dial plan. You can restrict the type of calls that are placed by callers when an unauthenticated user or an Outlook Voice Access user calls in to a subscriber access number that is configured on a dial plan by configuring dialing rule groups and dialing restrictions.

  • Allow calls to users within the same dial plan

    • Select this check box to let users who call in to a subscriber access number that is configured on a dial plan to place or transfer calls to an extension number that is associated with a UM-enabled user who is within the same dial plan. By default, this setting is enabled.

    • When you disable this setting, users who call in to the subscriber access number will be unable to place or transfer calls to any users who are not UM-enabled, to other extension numbers, or to UM-enabled users who are associated with the same dial plan. This is because the Allow calls to extensions setting is disabled by default.

  • Allow calls to extensions

    • When this setting is disabled, users who call in to a subscriber access number on the dial plan cannot place calls to users who are not UM-enabled or to other extension numbers that are not associated with a UM-enabled user. However, they can place a call or transfer 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. The Allow calls to extensions setting is disabled by default.

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

    • 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 dial plans.

    • In-country/region dialing rule groups are used to allow or restrict the telephone numbers within a country or region that any user who has dialed in to the subscriber access number 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, 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 dial plan.

    • 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 all 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 groups. By default, there are no international dialing rule groups configured on UM dial plans.

    • International dialing rule groups are used to allow or restrict the telephone numbers outside a country or region that any user who has dialed in to the subscriber access number can dial. This helps prevent unnecessary or unauthorized telephone calls and charges.

    • To add international dialing rule groups, you must first create the appropriate international dialing rule groups on the dial plan, 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 dial plan.

    • 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 all users who have called in to a subscriber access number.

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