How an incoming Whatsapp call will be redirected to MT device if device is in RRC idle state?

Hello Experts.

How an incoming Whatsapp call will be redirected to MT device if device is in RRC idle state?

Is there any paging?

WhatsApp MT Call from network is simply a DL data stream.

So will network page?

And in response will device initiate service request with cause MT service?

No.

Remember these OTT apps from network perspective are just data request.

I believe RRC Request will be Mobile Originating Data.

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