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Timing system for modular cable modem termination system

  • US 20060168612A1
  • Filed: 05/20/2005
  • Published: 07/27/2006
  • Est. Priority Date: 05/25/2004
  • Status: Active Grant
First Claim
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1. A modular cable modem termination system (CMTS), comprising:

  • at least one packet shelf operating a data over cable service interface specifications (DOCSIS) media access controller (MAC);

    one or more physical interface (PHY) shelves exchanging DOCSIS data with the packet shelf over a packet switched network; and

    a timing system that synchronizes DOCSIS timing between the packet shelf and the downstream PHY shelves.

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