There are several kinds of fiber optic networks: Fiber to the home (FTTH): the fiber optic connection starts at the telecom operator’s central office and goes all the way to the user’s home. Fiber to the cabinet (FTTC): the fiber optic connection covers the section from the central office to the street cabinet, while the final connection from the cabinet to the home uses copper cables. Fiber to the tower (FTTT): the fiber optic connection links the primary telecommunications network to the cellular network towers.