Phone Suite (https://www.xtelsio.com/en/products/client/index.htm) has the ability to open a URL when a call comes in, using a wildcard to pass information (like the phone number).
It would be nice, if there was the option to open a contact in Atera by using the phone number instead of the contact-id (which I assume is used now).
If the phone number is unknown, open a new contact.