Hello everyone—I’m in IT, very new to the field and my institution is leasing a new building to move into next year. The building is from the 50s, we’re doing extensive renovations, and there’s a TON of old legacy wiring from phone systems that I think is no longer necessary and removable, but I’m not sure. Before I go mucking around and taking stuff apart, I thought I’d ask for some more seasoned opinions. I took a few photos of the one closet. Am curious to hear what you all think. Also happy to provide more info. Thank you!