Bot making audio/video calls to peer but not able to see/hear

Hi,

I followed https://docs.microsoft.com/en-us/graph/api/application-post-calls?view=graph-rest-beta&tabs=http#examples article and did the following.

1. Registered the bot and allowed required permissions

2. Added one team member to my Team on Teams

3. Using above article, made a video/audio call API from Postman

4. The call went through.

5. My teammate got an incoming call from "MyBot"

6. But I am unable to understand how can I communicate with him if my callback URL is https://oauth.pstmn.io/v1/callback (Postman)

7. I tried both bot-to-peer and peer-to-peer. But in latter, I am not sure what should be the media configuration values?

Can anyone help me here to setup this audio/video call between me and my teammate?

Thanks!