Adding video function

Is there a way to add a ring camera to allow our ring intercom to show video when the buzzer is pressed? We have a ring intercom in a 2 storey block of flats (4 flats) and the intercom doesnt have video capability. I’d like to add video function so that when the buzzer is pressed it can show video as well. Is there a way to add an external camera so that i can see who is buzzing without actually having to add a ring video doorbell (which would defeat the object of having the intercom.