'How to implement the intercom/push-to-talk/walkie-talkie feature based on Firebase on Android and iOS?

I’m using Firebase as the cloud database and handling authentication for my Android and iOS APPs, it works quite well. Recently I want to add the intercom/push-to-talk/walkie-talkie function to the APPs based on Firebase as well. I have searched on the internet for a while but still am not sure where to start with:

(1) Is it possible to implement the intercom/push-to-talk/walkie-talkie function based on Firebase for both Android and iOS? If yes, is there any tutorial to start with?

(2) If Firebase is not the correct direction, is there any other example/tutorial on the intercom feature for both Android and iOS APPs?



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