How does coaxial network work?
HFC is used for delivering content like video, telephony, TV, digital TV, data and other interactive services over coaxial and fiber optic cables are using frequency-division multiplexing. In a Hybrid Fiber-Coaxial Cable System, the television channels are sent from the cable system's distribution facility, the headend, to local communities through optical fiber subscriber lines. At the local community, a box called an optical node translates the signal from a light beam to radio-frequency (RF) and sends it over coaxial cable lines for distribution to subscriber residences.