It is interesting to me how the equipment has changed over the years; plain old telephone service (POTS) and electricity, then dial-up service and cable TV and broadband-over-power line and now fiber optics cables to many neighborhoods.
I'm pretty sure this tube splits the fiber optics signals off to copper to my house. We (I) have become so dependent on all the latest technology. Without Cincinnati Bell Fioptics, no photo-a-day project for me.