You must now enable mailbox users for Unified Messaging. Each user must have a unique extension number and SIP URI.

If you want to enable users in bulk, you can use the Exchange Management Shell Enable-UMMailboxcmdlet. For details, see the documentation for Enable-UMMailbox.

To enable a user for UM by using the Exchange Management Console

  1. In the console tree of the Exchange Management Console, expand Recipient Configuration. In the details pane, select the user mailbox that you want to enable for Unified Messaging. In the action pane, click Enable Unified Messaging.

  2. In the Enable Unified Messaging wizard, on the Introductionpage, in the Unified Messaging Mailbox Policybox, click Browse. In the Select UM Mailbox Policydialog box, select the UM mailbox policy that you want, and then click OK. To configure the PIN settings for the user, select from the following options:

    • Automatically generate PIN to access Outlook Voice Access

    • Manually specify PIN

    • Require user to reset PIN at first telephone logon

  3. Click Next.

  4. On the Extension Configurationpage, select from the following options:

    • Automatically generated mailbox extension. If you have configured an extension number for the user in the Businessfield on the Address and Phonetab in the user's properties, the extension number will be generated automatically.

    • Manually entered mailbox extension. If you have not configured an extension number for the user, enter the extension number for the user in the Manually entered mailbox extensionbox. If you have associated the user with a SIP URI 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 his or her Exchange 2007 mailbox.

    • Automatically generated SIP resource identifier. This option will be available if the user whom you are enabling for Unified Messaging is associated with either a SIP URI or E.164 dial plan. For Office Communications Server, the user's SIP address is taken from the msRTCSIP-PrimaryUserAddress attribute in the Active Directory Domain Services. 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, amy.strande@litware.com.

    • Manually entered SIP resource identifier. This option will be available if the user whom you are enabling for Unified Messaging is associated with either a SIP URI or E.164 dial plan. 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.

  5. Click Next.

  6. On the Enable Unified Messagingpage, click Enable.

  7. On the Completionpage, click Finish.