ESP-MODEM 1.0.0 and incoming call

[FabITA123]

Hi,
in my application I use esp-modem component v.1.0.0 on ESP-IDF 4.4.3.
I want to hang up the incoming call with ATH command, but the RING URC seems not handled by the component. In the documentation I don't see any API that inform me that the incoming call are in progress. How is it possible to have the information about the incoming call?

Apart from this, I see than when I close the outgoing call with my phone, the consequent NO CARRIER message close the PPP connection which was previously active. what can be done to avoid this?
Thanks