Method and apparatus for screening request to establish SIP session
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United States of America Patent
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Nov 19, 2013
Grant Date -
Sep 1, 2011
app pub date -
Feb 26, 2010
filing date -
Feb 26, 2010
priority date (Note) -
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Abstract
A method and apparatus for screening a request to establish a SIP session is provided. The method may include a) receiving a request to establish a SIP session at a network node of an internet protocol network and incrementing a counter, b) determining whether the request includes a resource priority parameter with an elevated priority value and, if so, incrementing a counter, c) comparing a ratio of the priority request count to the total request count to a threshold, and d) processing each request that includes the elevated priority value using more comprehensive screening after the ratio exceeds the threshold, allowing processing for each request that includes the elevated priority value to continue in accordance with the elevated priority value after the ratio does not exceed the threshold, and allowing processing for each request that does not include the elevated priority value to continue in accordance with a routine priority.
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