Set up PSTN calls for Teams

Hi @Iniobong Nkanga

To connect Teams Phone to the PSTN, you can choose from the following options:

• Calling Plan. An all-in-the-cloud solution with Microsoft as your PSTN carrier.
• Operator Connect. With Operator Connect, if your existing carrier participates in the Microsoft Operator Connect program, they can manage PSTN calling and Session Border Controllers (SBCs).
• Teams Phone Mobile. With Microsoft Teams Phone Mobile, a user’s SIM-enabled phone number is also their Teams phone number. If your existing carrier participates in the Microsoft Teams Phone Mobile program, they can manage the service for bringing PSTN calling to Teams.
• Direct Routing. Enables you to use your own PSTN carrier by connecting your Session Border Controller(s) (SBCs) to Teams Phone.

You can also choose a combination of options, which enables you to design a solution for a complex environment, or manage a multi-step migration. The option or options you choose affect how some Teams Phone features are configured. For more information, see Configuration considerations.

Thanks for your understanding and support.

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