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Uninterrupted transmission of internet protocol transmissions during endpoint changes

  • US 9,154,417 B2
  • Filed: 11/27/2013
  • Issued: 10/06/2015
  • Est. Priority Date: 09/17/2009
  • Status: Active Grant
First Claim
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1. A method for facilitating uninterrupted transmission of Internet Protocol (IP) transmissions, during endpoint changes, the method comprising:

  • in response to receiving an IP transmission at a caller port or a callee port of a media relay through which IP transmissions of an IP communication session are relayed,a) locating a session information record having a caller port identifier or callee port identifier matching a destination port identifier in the IP transmission, wherein the caller port identifier identifies the caller port and the callee port identifier identifies the callee port; and

    b) when;

    i) the destination port identifier in the IP transmission matches the caller port identifier of the session information record; and

    ii) a source IP address identifier or a source port identifier in the IP transmission do not match a caller IP address identifier or the caller port identifier respectively of the session information record; and

    iii) a session identifier in the IP transmission matches a caller session identifier in the session information record;

    setting the source IP address identifier and the source port identifier in the IP transmission as the caller IP address identifier and caller port identifier respectively of the session information record; and

    c) when;

    i) the destination port identifier in the IP transmission matches the callee port identifier of the session information record; and

    ii) the source IP address identifier or the source port identifier in the IP transmission do not match a callee IP address identifier or the callee port identifier respectively of the session information record; and

    iii) the session identifier in the IP transmission matches a callee session identifier in the session information record;

    setting the source IP address identifier and the source port identifier of the IP transmission as the callee IP address identifier and the callee port identifier respectively of the session information record.

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