Patents Assigned to Coral Systems, Inc.
  • Patent number: 5615408
    Abstract: The present invention provides an apparatus for credit based management of a telecommunication system. One embodiment of the apparatus includes an interface for communicating credit information on a particular subscriber and for receiving call records for the particular subscriber that are derived from a switch which establishes connections between telecommunication devices. A credit limit device then utilizes the credit information to establish a credit limit for the subscriber. The apparatus also includes a device for comparing the particular subscriber's call usage to a credit limit established for the subscriber based on information obtained from the credit bureau. An output device is used to provide an indication that the subscriber has exceeded their credit limit. Another embodiment of the apparatus, includes a device for, upon expiration of a predetermined time period, contacting the credit bureau to obtain a new credit score for a subscriber and use this score to update the subscriber's credit limit.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: March 25, 1997
    Assignee: Coral Systems, Inc.
    Inventors: Eric A. Johnson, Mark J. Handzel
  • Patent number: 5345595
    Abstract: An apparatus for detecting potentially fraudulent telecommunication activity, comprising a digital computer; interface, operatively connected to the digital computer, for receiving a call information record for each call involving a particular subscriber; comparator operating within the digital computer, for comparing a parameter of the particular subscriber's current usage with a subscriber-specific pattern of the particular subscriber's historical usage; and an output for outputting an indication of a potentially fraudulent call based upon a result of the comparison performed by the comparator.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: September 6, 1994
    Assignee: Coral Systems, Inc.
    Inventors: Eric A. Johnson, Michael D. Liss, Flemming B. Jensen