(How) is it possible to add a global bot which can detect incoming audio or video calls in all channels?

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(How) is it possible to add a global bot which can detect incoming audio or video calls in all channels?

Nico Gerbig 0

Is it possible to add a bot to the left pane which can react to incoming calls in any channel to display additional caller information without beeing installed in all channels and chats?

The bot might post an adaptive card to the channel or chat, where the call is performed.

I'm almost sure, Teams doens't support this out of the box, but maybe it could be possible to subscribe to graph api events to get incoming calls and to write to these channels or chats.

I'ld be fine with doing this under application permissions (I assume, the one who's called is allowed to get these informations about the caller).

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Answer 1

Prasad-MSFT 10,366 Microsoft External Staff Moderator

Microsoft Teams does not support adding a bot to the left pane that reacts to incoming calls out of the box, you can indeed subscribe to Microsoft Graph API events to get incoming call notifications and then post an adaptive card to the specific channel or chat where the call is performed.

Subscribe to Microsoft Graph API Events: Use Microsoft Graph API to subscribe to call-related events.

Handle incoming call events in your bot.

Process Incoming Call Events: Extract caller information from the incoming call event.

Post Adaptive Card:
Use the Teams SDK and Adaptive Cards to create and post an adaptive card to the channel or chat.

Thanks,

Prasad Das ************************************************************************* If the response is helpful, please click "Accept Answer" and upvote it. You can share your feedback via Microsoft Teams Developer Feedback link. Click here to escalate.

Nico Gerbig 0 Reputation points

2024-02-20T14:03:15.56+00:00

Hi Prasad-MSFT thanks for your help. Could you provide some more details in how to subscribe the graph api events? I created a chat notification bot with http trigger and was able to send adaptive cards by performing post requests to /api/notification (i.e. with postman). When I try to use your code, onIncomingCallEvent is not triggered (this makes sense, since the TeamsActivityHandler has no such call defined).
Nico Gerbig 0 Reputation points

2024-02-20T16:00:34.8366667+00:00

Hi @Prasad-MSFT thanks for your help. Could you provide some more details in how to subscribe the graph api events? I created a chat notification bot with http trigger and was able to send adaptive cards by performing post requests to /api/notification (i.e. with postman). When I try to use your code, onIncomingCallEvent is not triggered (this makes sense, since the TeamsActivityHandler has no such call defined).
Prasad-MSFT 10,366 Reputation points Microsoft External Staff Moderator

2024-03-04T14:53:24.1866667+00:00

You are correct onIncomingCallEvent is not a defined event in the TeamsActivityHandler. I edited my response. Please refer this document which explains about subscribing to various resources.
https://learn.microsoft.com/en-us/graph/api/subscription-post-subscriptions?view=graph-rest-1.0&tabs=http#resources-examples
Oleh Mihdalskyi 55 Reputation points

2024-04-23T08:59:07.92+00:00

Hi. According to the document, there's no call events in the table at all. Does this mean there's no possibility at all to track incoming call events?

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(How) is it possible to add a global bot which can detect incoming audio or video calls in all channels?

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