The one on the top left is the fiber hub. That’s the main feed into the building. The one below is a terminal which connects to all the fibers coming out of the greenish conduits. The four gray boxes are individual ONT which are probably for various data/phone connections(elevator/fire alarm/faxes) for the building.
The one on the top left is the fiber hub. That’s the main feed into the building. The one below is a terminal which connects to all the fibers coming out of the greenish conduits. The four gray boxes are individual ONT which are probably for various data/phone connections(elevator/fire alarm/faxes) for the building.