DOCSIS (Data Over Cable Service Interface Specification) is an international telecommunications standard that permits the addition of high-bandwidth data transfer to an existing cable television (CATV) system. It is primarily used by cable operators to provide internet access over their existing hybrid fiber-coaxial (HFC) infrastructure. DOCSIS defines how data is transmitted over the cable network, specifying modulation schemes, protocols, and security features to ensure reliable and high-speed data delivery to subscribers.
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