A fiber wall socket houses the fiber connector that terminates the incoming fiber cable. Faceplate: Mounts flush on the wall. Back Box:. A Fiber Optic Socket Wall Outlet, also called a fiber optic faceplate or optical termination outlet, is a mounted interface designed to house and protect fiber optic terminations, such as SC, LC, or ST connectors. It ensures a clean, stable interface between the ISP's fiber network and your router—impacting speed, latency. Trunk outlet for fiber optics delivered with adapter and pigtails for 2 SC/APC.