Ancillary data support in session initiation protocol (SIP) messaging
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United States of America Patent
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Apr 19, 2011
Grant Date -
Jun 11, 2009
app pub date -
Dec 1, 2008
filing date -
Nov 30, 2007
priority date (Note) -
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Abstract
A SIP ancillary data server provides host to auxiliary data for an emergency SIP session (call) uniquely referred to in a transported SIP header. In a manner similar to how location is represented in an emergency call, a SIP header is extended. The extended SIP Header contains one of two possible types of content elements: either (a) a content pointer element to a SIP Message body part (a “cid:”, or content identifier); or (b) an
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