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Methods and apparatus to identify wireless subscriber activity status

  • US 8,792,855 B2
  • Filed: 02/01/2013
  • Issued: 07/29/2014
  • Est. Priority Date: 03/18/2009
  • Status: Active Grant
First Claim
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1. A computer implemented method to identify a status associated with a wireless telephone number, comprising:

  • sending a short message service (SMS) message to a list of telephone numbers to a response of associated wireless devices;

    monitoring for a response message resulting from the SMS message prompt;

    removing a first telephone number (TN) from the list of telephone numbers with an active status when the SMS message is associated with the first TN and causes an event message;

    removing a second TN from the list of telephone numbers when a registration message is identified independently of the SMS message prompt; and

    monitoring the second TN in the list with a provisionally dormant status when the second TN is associated with neither the response message nor the registration message.

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