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Method and system for inband emergency notification for voice calls

  • US 7,738,509 B2
  • Filed: 12/27/2002
  • Issued: 06/15/2010
  • Est. Priority Date: 12/27/2002
  • Status: Expired due to Fees
First Claim
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1. A method for providing an emergency notification from a mobile vehicle communication unit to a remote human operator at a call center, comprising:

  • detecting an emergency event at the vehicle, and attempting to place a data call to the call center;

    in response to detecting that the attempt to place the data call has failed;

    generating a human audible and human understandable emergency signal;

    placing a voice call to the call center;

    multiplexing the emergency signal within an audible data stream in the voice call;

    transmitting the multiplexed audible data stream from the vehicle to the call center;

    decoding the audible emergency signal from the audible data stream; and

    audibly reproducing the extracted emergency signal to the human operator.

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