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APPLIES TO: 
Teams Phone Mobile
This article provides considerations and guidance for IT pros and admins who are acquiring new telephone numbers from a Teams Phone Mobile partner.
Teams Phone Mobile is one of several methods available to integrate your tenant with the Public Switched Telephone Network (PSTN).
To learn more about Teams Phone Mobile, see Plan for Teams Phone Mobile.
In a Teams Phone Mobile solution, the phone number services agreement is between your organization and your PSTN operator. You may fulfill other requirements with your Teams Phone Mobile PSTN operator, like assigning number usage types, Emergency Calling services, and more.
To reserve and acquire new Teams Phone Mobile numbers or to port existing numbers to your Teams Phone Mobile partner, work with your Teams Phone Mobile partner directly.
To learn more acquiring phone numbers with a Teams Phone Mobile partner, see Configure Teams Phone Mobile.
Once your Teams Phone Mobile partner reserves numbers for you, they will appear in Teams. You can use Teams to assign Teams Phone Mobile numbers to users. To learn more, see Manage phone numbers for users.
Considerations for getting Teams Phone Mobile numbers in your tenant
If you attempt to add Teams Phone Mobile phone numbers using Teams admin center's Add phone numbers wizard, you're redirected to the operating partner and away from the Teams admin center.