Wireless in-band signaling with in-vehicle systems
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United States of America Patent
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Feb 5, 2013
Grant Date -
Sep 1, 2011
app pub date -
May 9, 2011
filing date -
Oct 20, 2007
priority date (Note) -
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Abstract
This invention pertains to methods and apparatus for data communications from vehicles, to obtain emergency, concierge and other services, using a voice channel of a digital wireless telecommunications network. Signaling is described for commencing data sessions after establishing a voice channel call. The call may be initiated from the vehicle automatically, and the call taker location may be unattended. Signaling methods are selected for traversing both newer and legacy vocoders for ubiquitous operation.
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