Assign, change, or remove a phone number for a user

When you set up Calling Plans in Office 365, you assign phone numbers to your users.

In the Microsoft Teams client, the phone number you assign will be listed when they click Calls.

User's phone number displayed in Microsoft Teams.

In the Skype for Business client, the phone number you assign will be listed in the Work Phone box and can't be changed by a user.

Work Phone Number is Greyed Out.

Important

If a user wants to change his or her phone number for Skype for Business and the phone number in the Skype for Business app can't be changed or is grayed out, that means an admin has set it for them and it can't be changed by them.

Assigning a number

When you are setting up users so they can make and receive phone calls, you must first use the Skype for Business admin center and assign a phone number, but you can change or remove the phone number if you need to.

To learn how to get Calling Plans in Office 365 and how much they cost, see Skype for Business and Microsoft Teams add-on licensing.

Note

One way to see whether a user has a license assigned is by going to Skype for Business admin center > Voice > Voice users and selecting the user. If a license is assigned, it will be noted under Assigned license. You also can use the Office 365 admin center.

Assign a phone number to a user

  1. Sign in to Office 365 with your work or school account.

  2. Go to Office 365 admin center > Admin centers > Skype for Business.

  3. In the left navigation, click Voice > Voice users.

    IMPORTANT: For you to see the Voice option in the left navigation in the Skype for Business admin center, you must first buy at least one Enterprise E5 license, one Phone System add-on license, or one Audio Conferencing add-on license.

  4. On the Voice users page, locate and select the user or users that you want to assign a phone number to.

  5. In the Action pane, click Assign number.

  6. On the Assign number page in the Select number to assign list, select the phone number for the user.

    Tip

    If you don't see any phone numbers listed, you need to Getting phone numbers for your users first. Or, if you use the Skype for Business admin center > Voice > Phone numbers page, click Add, and then click New user numbers.

  7. To assign or change the associated emergency address, under Select validated emergency location, either select the location from the list or, if you have many locations defined, enter the name of the city in the search box and click Search.

  8. After you pick the phone number and emergency location, click Save.

    Note

    Because of the latency between Office 365 and Skype for Business Online, it can possibly take up to 24 hours for users to be enabled. If after 24 hours, if the phone number isn't assigned correctly, please Contact support for business products - Admin Help. We're here to help!

Changing a number

To change a phone number for a user

  1. Sign in to Office 365 with your work or school account.

  2. Go to Office 365 admin center > Admin centers > Skype for Business.

  3. In the left navigation, click Voice > Voice users.

  4. On the Voice users page, locate and select the user or users that you want to change a phone number for.

  5. In the Action pane, under Assigned number, click Change.

  6. On the Assign number page, click Change number.

  7. On the Assign number page, under Select number to assign, use the list to select the new phone number.

  8. To change the associated emergency address, click Change location, and then under Change emergency address to, either select the location from the list or, if you have many locations defined, enter the name of the city in the search box and click Search.

  9. Click Save.

Removing a number

To remove a phone number from a user

  1. Sign in to Office 365 with your work or school account.

  2. Go to Office 365 admin center > Admin centers > Skype for Business.

  3. In the left navigation, click Voice > Voice users.

  4. On the Voice users page, locate and select the user or users that you want to remove the phone number for.

  5. In the Action pane, under Assigned number, click Remove.

  6. On the Remove selected assigned number? page, click Yes.

What is address validation?

Manage phone numbers for your organization

Emergency calling terms and conditions

Skype for Business Online: Emergency Calling disclaimer label