Caller ID from iPhone to OpenHab

I’m looking for a way to submit the ID of a caller on my iPhone to OpenHab. With Android I would have several approaches, but with the iPhone (must use this part for the business:-() i find nothing. Is there possibly with the Bluetooth Binding a way to simulate a speakerphone and from it to get the caller as a string?
Background: When I am at home, the phone is always in the living room. In the sauna, workshop, garden or on the balcony I hear the calls then not. I have Google Home in most rooms, they could announce the names of important callers.
Maybe someone knows a hands-free device that outputs the caller ID via network or serial?

Was wondering if a solution was found, getting get Caller-ID from an iPhone into openHAB

I solved it by disposing of my iPhone and buying an Android phone.
This works well with the openHAB app and Tasker, TV and music are muted when there is a call and the caller is announced on all Google homes.
Unfortunately i didn’t find a solution for iDevices.

Thanks for the update.