Method, device and system for transmitting an emergency call
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United States of America Patent
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Oct 4, 2011
Grant Date -
Jun 21, 2007
app pub date -
Jun 30, 2004
filing date -
Jun 30, 2003
priority date (Note) -
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Abstract
This invention relates to a method and an emergency call device for transmitting an emergency call including emergency information from a vehicle using a mobile communication system. Further this invention is related to an emergency call system comprising the emergency call device and an emergency call assistance center. To provide a method for transmitting an emergency call which increases the reliability of data transmission this invention provides a method for transmitting an emergency call including emergency information from a vehicle using an mobile communication system. After an emergency call has been triggered at the vehicle, the method establishes a data connection to an emergency call assistance center via the mobile communication system, transmits emergency information to the emergency call assistance center using the data connection, establishes a first voice connection to the emergency call assistance center via the mobile communication system, and transmits a DTMF message including emergency information using the established first voice connection.
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