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Methods and apparatus for providing timing analysis for packet streams over packet carriers

  • US 10,164,890 B2
  • Filed: 09/11/2017
  • Issued: 12/25/2018
  • Est. Priority Date: 04/11/2013
  • Status: Active Grant
First Claim
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1. A network layout, configured to transmit data packets from a source to a destination via a network transmission, comprising:

  • a packet switched network (“

    PSN”

    ) containing one or more circuit emulation service (“

    CES”

    ) circuits for transmitting data from a source to a destination;

    a first node coupled to the PSN and configured to send a stream of packets to a first destination via the PSN; and

    a second node coupled to the PSN and configured to receive the stream of packets from the first node, the second node configured to inform carrier potential failure associated with a CES circuit based on timing offsets calculated in accordance with an arrival timestamp of the stream of packets, wherein the second node includes at one network device, wherein the network device is configured to obtain an arrival timestamp associated with the stream of data packets, to store the arrival timestamp in a timestamp buffer based on a first-in first-out (“

    FIFO”

    ) storage sequence, to identify an oldest arrival timestamp in the timestamp buffer in accordance with the FIFO storage sequence, to generate a timing report in response to an offset, and to record rate lock status in a log when the offset falls within a predefined range.

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