As part of Microsoft’s feature parity with Teams Phone extensibility, we’re announcing the enforcement of Phone System license checks for Bot-initiated transfers to Teams users. This current gap in our systems will be addressed in September 2025.
Microsoft Teams requires that Teams users behind applications such as queue applications require a phone system license and the user to be Enterprise Voice Enabled. We’re aligning the Microsoft Graph API with that requirement.
What is the change?
Effective September 30, 2025:
- Teams users will still have the option to transfer calls to other Teams users manually even if they don’t have a PSTN phone system license.
- Bot-initiated transfers and add participant requests to non-phone system enabled users will be blocked.
What do you need to do?
- Review and update any applications that use the transfer and add participant APIs to make sure that they account for the new default behavior.
- If you currently rely on the absence of license checks, enforce and inform customers about the change in behavior so they don’t experience a service disruption.
Hi Rahul, Can you confirm what Call handling methods are affected by this https://learn.microsoft.com/en-us/graph/api/resources/call?view=graph-rest-1.0
Will this impact the current ability for NON-Enterprise Voice enabled users to receive inbound PSTN calls from a Teams Auto Attendant?