@Jeroen H - If you want to answer calls as a Teams user (using the ACS SDK) from a Teams call queue, it's possible as long as the queue is configured to route calls to that Teams user.
If you're wondering how to register an incoming call event handler as a Teams user, you can refer to this quickstart guide: https://learn.microsoft.com/en-us/azure/communication-services/quickstarts/voice-video-calling/get-started-with-voice-video-calling-custom-teams-client?tabs=uwp&pivots=platform-web
Regarding your other question about whether the original caller's number is surfaced via the incoming event, we do indeed surface both the original caller's number and the call queue name.
However, if your question is about receiving incoming call events via Azure Event Grid for a Teams user (using the ACS SDK), such as the events listed below, this feature is not available today.
Ref Doc: https://learn.microsoft.com/en-us/azure/event-grid/communication-services-voice-video-events#microsoftcommunicationincomingcall
Thanks,
Nivedipa
*************************************************************************
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.