The opening for the door is three feet wide. The floor is covered with ceramic tiles. Lighting is provided by an incandescent lighting fixture in the ceiling. The light switch that turns the light on and off is located just outside the door. There are eight electrical outlets in the room, two along each wall.
Walls are of concrete block construction and are painted with a fire retardant paint.
Currently, the room is used to store extra office equipment and is kept locked. The door can only be unlocked from outside the room. When the 100 meter 'catchment area' of one 'wiring closet' is not enough to include all devices that need to be networked, repeaters can be used in an extended star topology. So important is this central location that in a high rise building the MDF is usually located on one of the middle floors of the building even though the POP might be located on the first floor or in the basement. Backbone - The part of a network that acts as the primary path for traffic that is most often sourced from, and destined for, other networks.