The main difference between the CATV network and the telephone network is their fundamental underlying physical network architecture; the telephone network is logically a bus and the CATV network is logically a star.

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The main difference is actually the opposite; the CATV network is logically a bus topology, where signals are distributed along a common backbone to all users, and the telephone network is logically a star topology, where each user has a dedicated line to the central office.

The Main Difference Between the CATV Network and the Telephone