Enable Unified Messaging Wizard > Extension Configuration Page

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

Use the Enable Unified Messaging Wizard to enable an existing Microsoft Exchange Server 2007 user's mailbox for Unified Messaging. After you successfully enable the user's mailbox for Unified Messaging, Unified Messaging servers that are associated with the UM dial plan that the user is associated with will accept incoming calls for the extension number that is configured for the user.

You can configure the extension number automatically or manually by using the Enable Unified Messaging Wizard. An extension number is required for each UM-enabled user whether they are associated with a Telephone Extension, SIP URI, or E.164 dial plan. The extension number must be the correct number of digits, as specified in the UM dial plan for the UM mailbox policy. If the user is associated with an E.164 dial plan, you can manually configure an E.164 address for a user by using the Enable Unified Messaging Wizard. If you are associating a user to a SIP URI or E.164 dial plan, you must manually enter an extension number and the Session Initiation Protocol (SIP) or E.164 address for the user.

After a mailbox-enabled recipient is enabled for Unified Messaging, you should perform the following tasks:

To enable a user for Unified Messaging by using the Enable Unified Messaging Wizard, on the Extension Configuration page, complete the following information:

  • Automatically generated mailbox extension

    • Click this button if you want the extension number for the user's mailbox to be automatically generated from the telephone number that is specified in the Active Directory directory service and used to populate the field. By default, this setting is enabled.

      • For the user's extension number to populate this field, you can enter the telephone number in the Business field on Address and Phone tab in the user properties in the Exchange Management Console. You can also configure a telephone number for a user by configuring the Telephone number field on the General tab on the user account by using Active Directory Users and Computers.

      • If you select this option, the extension number that is generated automatically for the user will comply with the number of digits that is specified for the dial plan with which the UM mailbox policy that you selected is associated. For example, if the dial plan is configured to use 5-digit extension numbers, the Unified Messaging server will take the last 5 digits of the user's telephone number and use those digits to populate this field.

    • UM dial plans are typically configured to have extensions that are three to seven digits long.

    • This option will be unavailable if the user is being associated with a SIP URI or E.164 dial plan.

  • Manually entered mailbox extension
    Click this button if you want to manually configure the extension number for the user's mailbox.

    • If you select this option, you must supply the extension number for the user. If you select this option, you must provide a valid extension number for the user and must match the number of digits specified on the dial plan. You can configure this field to contain a value range of numeric characters or digits from 1 to 20. The typical extension number is from three to seven digits and is configured on the dial plan with which the UM mailbox policy is associated.

    • If your existing telephony environment includes extension numbers, you must specify a number of digits that matches the number of digits in those extensions. The number of digits that you specify is the default setting after a UM mailbox policy is selected.

  • Automatically generated SIP resource identifier
    Click this button if you want the SIP resource identifier or SIP address for the user's mailbox to be automatically generated.

    • If you have deployed Office Communications Server 2007, the user's SIP address is taken from the msRTCSIP-PrimaryUserAddress attribute in Active Directory. If this attribute is not populated, the user's primary SMTP address will be used for the SIP address. By default, this setting is enabled. For example, tony.smith@contoso.com.

    • This option is available only if the user that you are enabling for Unified Messaging is associated with a SIP URI dial plan. This option will be unavailable if you are configuring a user's mailbox to be associated with an E.164 dial plan.

    • If you are associating a user with a SIP URI dial plan, you must also manually enter a mailbox extension for the user. This extension number is used when a user uses Outlook Voice Access to access their Exchange 2007 mailbox. The number of digits that you configure in this field must match the number of digits that are configured on the SIP URI or E.164 dial plan.

    • This option will not be available if the user is being associated with a Telephone Extension dial plan.

  • Manually entered SIP resource identifier
    Click this button if you want to manually enter the SIP or E.164 address for the user. This option is available if the user that you are enabling for Unified Messaging is associated with either a SIP URI or E.164 dial plan.

    • If you have deployed Office Communications Server 2007, the user's SIP address is taken from the msRTCSIP-PrimaryUserAddress attribute in Active Directory. If this attribute is not populated, the user's primary SMTP address will be used for their SIP address. For example, tony.smith@contoso.com.

    • If you are associating the user with an E.164 dial plan, you must manually enter an E.164 address for the user. The number that is entered must be in the correct E.164 format. For example, +14255551234.

    • If you have associated the user with a SIP or E.164 dial plan, you must also manually enter a mailbox extension for the user. This extension number is used when a user uses Outlook Voice Access to access their Exchange 2007 mailbox. The number of digits that you configure in this field must match the number of digits that are configured on the SIP URI or E.164 dial plan.

    • This option will not be available if the user is being associated with a Telephone Extension dial plan.

After you complete the fields on the Extension Configuration page of the Enable Unified Messaging Wizard, click Next to review the configuration settings for the user after the user has been enabled for Unified Messaging.

For More Information

For more information about how to manage UM-enabled users, see Managing Unified Messaging Users.

For more information about UM-enabled users, see Understanding Unified Messaging Users.