... the box on the wall inside your condo, along the hallway near your back door.
This is where the Cable TV, DirectTV gets service into your condo without running any wires. Inside phone wires are here too. I haven't a clue yet what the yellow cable is for. For now I'm just gonna link you back to the photos at the bottom section of the Telephone page, where there are the same photos which I'd just be duplicating here.