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Universal code for emergency calls mode in a network environment

  • US 9,420,445 B2
  • Filed: 01/08/2014
  • Issued: 08/16/2016
  • Est. Priority Date: 01/08/2014
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving an emergency call mode (ECM) code from a sender number at an application framework layer of a phone, wherein the ECM code can trigger an ECM procedure call in a telephony service of the application framework layer, wherein the ECM code comprises a universal code including a unique combination of letters, numbers and non-alphanumeric symbols understood by telecommunications carriers and phones to trigger ECM;

    authenticating the sender number, comprising looking up in the phone an in-case-of-emergency (ICE) contact list having a list of phone numbers of users authorized to send the ECM code to the phone;

    accepting the ECM code if the sender number matches one of the entries in the ICE list, and rejecting the ECM code if the sender number does not match any of the entries in the ICE list; and

    invoking the ECM procedure call if the ECM code is accepted, wherein the ECM procedure call instructs an operating system of the phone to enter ECM, wherein the phone is enabled to only make or receive calls and non-essential components of the phone that utilize battery power are disabled in ECM.

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