If you want to use toll-free numbers with Microsoft Teams, you need to set up Communications Credits. Microsoft recommends that you set up Communications Credits for your Microsoft Teams Calling Plan (Domestic, International, or Pay-As-You-Go) and Audio Conferencing users who need to dial out to any destination. Some destinations may not be included in your Calling Plans or Audio Conferencing subscriptions.
To set up Communication Credits for your organization, follow these steps:
1.Assign an Audio Conferencing and/or Phone System with Calling Plan license to your users.
2.Set up Communications Credits for your organization.
3.Assign a Communications Credits license to users.
Please refer to this document for detailed steps.
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