Method of call routing
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United States of America Patent
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N/A
Issued Date -
Oct 26, 2006
app pub date -
Apr 2, 2004
filing date -
Jun 27, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention is directed to methods and apparatus for call routing. The invention particularly relates to routing of calls, such as emergency calls, which are routed based on the location of a mobile subscriber in a cellular wireless network. The method comprises the steps of: at a first network node, receiving location information relating to a subscriber originating a call; at said first network node, determining initial routing information based on said location information; sending said location information from said first network node to a second network node; at said second network node, determining updated routing information based on said location information; sending said updated routing information from said second network node to said first network node; and at said first network node, routing said call based on said updated routing information. An advantage of the invention is that calls are routed based on more precise information, which is particularly important in the case of emergency calls.
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