Distribution units and enclosures are similar to patch panels, except they provide additional space to organize fiber. The distribution units provide an area to store the extra fiber in a large loop. Beyond the wiring closet, wall and floor outlets provide transition from the inner-wall cabling to the drop cables running to equipment. These serve the same purpose as the modular plug telephone outlet. One of the most popular variations is the AMP Communications Outlet, which uses modular inserts to accommodate coaxial, twisted pair, and fiber optic cabling.
Interfaces are available in nearly every conceivable style to meet all needs.
All of the above can be customized to specifications, either simplex or duplex, and at the length of fiber optic cable required.