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Upstream physical interface for modular cable modem termination system

  • US 20070195824A9
  • Filed: 05/17/2005
  • Published: 08/23/2007
  • Est. Priority Date: 06/27/2001
  • Status: Active Grant
First Claim
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1. An upstream cable Physical Interface (PHY), comprising:

  • one or more cable Physical Interfaces (PHYs) containing Quadrature Amplitude Modulation (QAM) demodulators for demodulating Data Over Cable Service Interface Specifications (DOCSIS) frames received over an upstream path of a cable plant into DOCSIS Media Access Control (MAC) PHY Interface (DMPI) blocks; and

    a DOCSIS Remote PHY Interface (DRPI) framer configured to convert the DMPI blocks into packets and send the packets over a packet switched network.

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