Currently we can access audio and video sessions using Microsoft.Graph.Communications.Calls.Media.
Ref: https://learn.microsoft.com/en-us/microsoftteams/platform/bots/calls-and-meetings/requirements-considerations-application-hosted-media-bots
Also refer: https://learn.microsoft.com/en-us/microsoftteams/platform/bots/calls-and-meetings/real-time-media-concepts
Thanks,
Prasad Das
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