This section covers HFC arrangements, the use of cable modems, and the future of IP telephony over cable. HFC supports a wide range of services, including traditional telephony, broadcast video, and interactive broadband services. It involves the use of fiber in the backbone and in the access network. The fiber termination point (that is, the neighborhood node) can support anywhere from 200 to 2,000 homes, with 200 to 500 homes being the norm. From that neighborhood node, coax (normally 750MHz or 1,000MHz) is run to the home, in a two-way subsplit system.

In countries in which there is a history of cable TV, the cable plants have traditionally operated in one direction, for the broadcast of video programming. To handle a two-way infrastructure, ...

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