Seems like a good case for some kind of handshake protocol where the caller and recipient can negotiate if they want to use AI or not, and have the AI talk to the other AI if both side agrees.

The tool itself seems like a fine response to companies that uses AI to take calls. If they want to replace their human interface with an computer interface, then the user have the same option. In practice it means that the customer uses their own computer interface to communicate with the companies computer interface. It not much different from the experience of a website where the customer can do the exact same thing, like scheduling an appointment, paying a bill, or checking their balance. The only difference is that the website is now replaced with two AI interfaces that communicate through the phone like old dial-up.