Is it possible that I develop a desktop app which can make calls to Microsoft Teams users? I don't have Teams license.
I have viewed https://docs.microsoft.com/en-us/graph/api/application-post-calls?view=graph-rest-beta&tabs=http but it's not helpful.
@allenwu730 Currently we do not support initiating a call to Microsoft Teams user from an external app. You could deeplink and open a chat with the user but not call.