DOCSIS has been around since 1997 and gone through several major advances, each one drastically increasing the abilities of cable internet. The modem in your house is equipped with an advanced protocol called DOCSIS that translates the signals received from the coaxial network.ĭOCSIS stands for data over cable service interface specifications, and basically, it’s the technology that has allowed the use of existing coaxial networks for high speed internet. Internet signals travel on the surface of the copper-clad cores in the coaxial cables. By using these hybrid coaxial-fiber networks, cable ISPs bring excellent high-speed broadband connections to much of the country. The coaxial cable is only used to get the signal from the home to one of these fiber lines that serve as internet superhighways. Even though it’s called cable internet, cable ISPs actually use extremely high-bandwidth fiber lines for the central parts of their networks. Cable internet uses a network of coaxial cables (the same cables used for cable TV) to bring internet signals to and from your home.
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