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User device selection

  • US 9,372,963 B2
  • Filed: 08/30/2012
  • Issued: 06/21/2016
  • Est. Priority Date: 08/30/2012
  • Status: Active Grant
First Claim
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1. A computer-implemented method comprising:

  • receiving, at an application server, a session initiation protocol (SIP) invite message including a public user identifier (ID) associated with a user, wherein the public user ID corresponds to a plurality of user devices;

    determining whether the SIP invite message is received during a callback period after a user device of the plurality of user devices has placed a call for emergency services, wherein determining whether the SIP invite message is received during the callback period comprises identifying whether the SIP invite message includes an emergency override indicator associated with the public user ID, wherein the emergency override indicator is generated in association with the call for emergency services;

    in response to determining that the SIP invite message is received during the callback period;

    alerting the user device that placed the call for emergency services; and

    in response to determining that the SIP invite message is not received during the callback period;

    determining an applicable order of alerting at least one of the plurality of user devices based on a type of call or session associated with the SIP invite message and at least one attribute associated with the plurality of user devices;

    identifying at least one available user device associated with the user, based on a terminal identifier (ID) associated with each at least one available user device, wherein a different terminal ID is associated with each at least one available user device;

    selecting a user device from the at least one available user device based on the applicable order of alerting;

    modifying the SIP invite message by inserting a terminal ID header that includes a terminal ID for the selected user device;

    sending the SIP invite message to the selected user device based on the applicable order of alerting; and

    receiving a response to the SIP invite message with the terminal ID.

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