As with the emergency door, no matter how complex your electronics, eventually it has to interface with the physical world. In this case, you have to convert sound to electricity or electricity to sound. I quickly found the microphone and speaker used to interact with Bender, along with a camera that presumably gave a video input. Nearby was a twin of the Motorola box from my earlier incarceration. So, pretty low tech—they simply had Bender talk into the mic just like a live person. Made sense, I guess. That way they could monitor what he was saying and hearing.