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Distribution of data flows to local loop subscribers by an access multiplexer

  • US 20040090970A1
  • Filed: 11/11/2002
  • Published: 05/13/2004
  • Est. Priority Date: 11/11/2002
  • Status: Abandoned Application
First Claim
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1. A method of distributing a flow of data embedded in a plurality of cells to zero or more subscribers, the method comprising:

  • receiving a cell in conformance with the asynchronous transfer mode (ATM) protocol;

    identifying zero or more virtual circuits of subscribers that are to receive the cell, using a VPIVCI number in the cell and a mapping between cell VPI/VCI numbers and the subscriber virtual circuits;

    transmitting a copy of the cell on each subscriber virtual circuit that is identified, wherein identification of each subscriber virtual circuit provides at least an output VPI/VCI number and an output port;

    repeating the acts of receiving, identifying and transmitting until a message is received from a subscriber requesting a new flow to be supplied thereto;

    changing the mapping, to map a new VPI/VCI number of a cell of the new flow to the virtual circuit of the subscriber, without regard to an input VPI/VCI number of the subscriber'"'"'s virtual circuit; and

    returning to the act of repeating;

    wherein the virtual circuit to each subscriber is kept intact during the method.

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