Hi @Arun A
Hope you are doing well.
Currently there is no such way to receive calls in real time using Graph API as of now.
As a alternative you can use webhook to receive notifications by creating subscription for incoming call.
The problem with the webhook is the notifications of incoming calls has a high latency so the received data is not in realtime.
Since this feature/functionality is presently not available, you can submit a feature request idea using this support link , which will be monitored by Microsoft team and make the enhancements to Microsoft Graph APIs. I will also upvote for you.
You can also track new features/changes in Graph API Using the below Documentation.
Hope this helps.
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