What is a riser or backbone cable?
The riser is a vertical shaft used to route cable between two floors. Often, this is nothing more complicated than a hole (core) thats drilled in the floor and allows cables to pass through. A type of cable used in vertical building shafts, such as telecommunications and utility shafts. Riser cable typical has more mechanical strength than general use cable and has an intermediate fire protection rating. Riser cable can be copper or fiber optics based.
