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Add an E.164 Number

Exchange Online
 

Applies to: Exchange Online

Topic Last Modified: 2012-11-14

When you enable a user for UM and link them to an E.164 dial plan, two EUM proxy addresses are created. One contains the user’s extension number and the other contains the E.164 number for the user. The extension number is used when the user calls in to an Outlook Voice Access number.

The primary E.164 number you added when the user was enabled for UM will be listed as the primary EUM proxy address. If the primary E.164 number was removed, the first EUM proxy address you add that contains the user’s E.164 number will be listed as the primary EUM proxy address. Any additional E.164 numbers you add will be listed as secondary EUM proxy addresses. When additional E.164 numbers are added, callers can leave voice mail for the user at all E.164 numbers that have been set. All the voice messages will be delivered to the same user’s mailbox.

You can use the EAC or the Shell to add a primary or a secondary E.164 number for a user. You can use the Email Address page on the user’s mailbox in the EAC to add a primary or secondary E.164 number. You can’t use the UM Mailbox page in the EAC to add a primary or secondary E.164 number.

You can view the primary and secondary E.164 numbers for a user by using the Get-UMMailbox cmdlet or the Get-Mailbox cmdlet in the Shell.

For additional management tasks related to users who are enabled for voice mail, see Voice Mail-Enabled User Procedures.

  • Estimated time to complete: 3 minutes.
  • You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "UM mailboxes" entry in the Unified Messaging Permissions topic.
  • Before you perform these procedures, confirm that an E.164 UM dial plan has been created. For detailed steps, see Create a UM Dial Plan.
  • Before you perform these procedures, confirm that a UM mailbox policy has been created. For detailed steps, see Create a UM Mailbox Policy.
  • Before you perform these procedures, confirm that the user’s mailbox has been enabled for UM and linked to an E.164 dial plan. For detailed steps, see Enable a User for Voice Mail.
  • Before you perform these procedures, confirm that the E.164 number that will be assigned to the user is valid and formatted correctly.
  • For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard Shortcuts in the Exchange Admin Center.
tipTip:
Having problems? Ask for help in the Exchange forums. Visit the forums at: Exchange Server, Exchange Online, or Exchange Online Protection.
  1. In the EAC, navigate to Recipients > Mailboxes.
  2. In the list view, select the mailbox for which you want to add an E.164 number, and then click Edit Edit Icon.
  3. On the User Mailbox page, under Email address, click Add Add Icon.
  4. On the New email address page, select EUM and, in the Address/Extension box, enter the new E.164 number for the user.
  5. On the New email address page, under Dial plan, click Browse to select the E.164 dial plan and then click OK.
  6. Click Save.

This example adds an E.164 number for Tony Smith, a UM-enabled user.

noteNote:
Before you add an E.164 number using the Shell, you need to determine the position of the EUM proxy address that you want to add. To determine the position, use the $mbx.EmailAddresses command. The first proxy address in the list will be 0.
$mbx=Get-Mailbox tony.smith
$mbx.EmailAddresses.Item(2)="eum:+14255550123;phone-context=MyDialPlan.contoso.com"
Set-Mailbox tony.smith -EmailAddresses $mbx.EmailAddresses
 
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