Systems and Methods for Providing Emergency Callback Procedures

  • US 20100304705A1
  • Filed: 05/28/2009
  • Published: 12/02/2010
  • Est. Priority Date: 05/28/2009
  • Status: Active Grant
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First Claim
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1. A method for operating a gateway mobile switching center (GMSC) to execute an emergency callback to a mobile device, the method comprising:

  • processing, at a GMSC, an emergency callback received from a public safety answering point (PSAP) in response to an unexpected release of an emergency call to reestablish communication between the PSAP and the mobile device;

    the GMSC issuing a special-use SendRoutingInformation (SRI) message to a home location register (HLR), the special-use SRI message comprising a parameter to suppress a call blocking feature enabled for a calling party of the emergency call;

    the GMSC processing an SRI response message received from the HLR in response to the special-use SRI message, the SRI response message comprising a Mobile Station Roaming Number (MSRN); and

    the GMSC routing the emergency callback to a servicing mobile switching center (MSC) based upon the MSRN.

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