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Distributed digital loop carriers system using coaxial cable

  • US 5,729,824 A
  • Filed: 12/09/1994
  • Issued: 03/17/1998
  • Est. Priority Date: 12/09/1994
  • Status: Expired due to Fees
First Claim
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1. A distributed digital loop (DDL) system providing video and telephone services to a plurality of subscribers, comprising:

  • a plurality of taps placed at intervals along a coaxial cable carrying video and telephone signals, each one of said plurality of taps having a passive module coupled to an active distribution unit;

    a routing terminator coupled at an end of said coaxial cable; and

    a network interface unit located at a subscriber premises, said network interface unit coupling subscriber video and telephone equipment to said active distribution unit via a drop cable,wherein, telephone signals travelling down toward said routing terminator pass through said plurality of taps, and are converted into low frequency telephone signals by said routing terminator for transmission back to said plurality of taps in a subsplit frequency channel of said coaxial cable.

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