Structured wiring is installation of telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems. 1) Demarcation Point is the point at which the Satellite system connects with the wiring at the customer premises. 2) Telecommunications Rooms house equipment and wiring consolidation points which serve the users inside the site. 3) Vertical or Riser Cabling connects between the equipment/telecommunications rooms, so named because the rooms are typically on different floors. 4) Horizontal wiring can be IW (inside wiring) or Plenum Cabling that connects telecommunications rooms to individual outlets on the wall, usually through the wire ways, conduits or ceiling spaces of each floor.