Structured Cabling is defined as building or campus telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems.Structured cabling falls into the following six sub-systems:
- Entrance Facilities is where the building interfaces with the outside world.
- Equipment Rooms host equipment which serves the users inside the building.
- Telecommunications Rooms are where various telecommunications and data equipment resides, connecting the backbone and horizontal cabling sub-systems.
- Backbone Cabling as the name suggests carries the signals between the entrance facilities, equipment rooms and telecommunications rooms.
- Horizontal Cabling is the wiring from telecommunications rooms to the individual outlets on the floor.
- Work-Area Components connect end-user equipment to the outlets of the horizontal cabling system.






