In Wiltshire, United Kingdom, in 2003, a pilot plan for what exactly is now called "Talking CCTV" was set into motion, allowing for operators of CCTV cameras to speak through the camera via a speaker when it is needed. Obtained their eight camera 4K bullet system and additional 2 fisheyes. https://daltonioqp13468.wiki-cms.com/7438838/camera_closed_circuit_television_for_dummies