Real time call using zoom

Hi,

I want to implement Zoom for the following features:

1 - Real-time calls where Zoom SDK apps ring like a normal WhatsApp call. I don’t want to create a meeting/session and send a link to other participants; I want a traditional call setup. For example, when a Zoom client starts a call, I want to ring the other devices and prompt them to accept or reject the call.
2- Calls from a mobile app to a browser and vice versa. If the call originates from the browser, I want to send a normal VOIP notification to iOS for accepting or rejecting the call.
3- Calls with multiple people at the same time, similar to Twilio’s support.
4- Adding video participants into an ongoing call.

Is it possible to achieve these features using any Zoom SDK?

Thanks.