The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2008
Filed:
Mar. 14, 2003
David B. Smith, Hinsdale, IL (US);
Matthew Richard Smith, Hinsdale, IL (US);
David L. Yarbrough, Reston, VA (US);
Eric Edward Kampmeier, Sycamore, IL (US);
Simon S. OH, Naperville, IL (US);
Thomas J. Loos, Lisle, IL (US);
David B. Smith, Hinsdale, IL (US);
Matthew Richard Smith, Hinsdale, IL (US);
David L. Yarbrough, Reston, VA (US);
Eric Edward Kampmeier, Sycamore, IL (US);
Simon S. Oh, Naperville, IL (US);
Thomas J. Loos, Lisle, IL (US);
Federal Bureau of Investigation, The United States of America as represented by the Office of the General Counsel, Washington, DC (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
Data generated at a telecommunications network switching node is selectively delivered to one or more data receiving device (e.g., data 'collection box') connected to the network, and command and control signaling is transmitted from the data receiving device to the switching node. This bi-directional communication is carried out in a manner compatible with voice grade lines. In an exemplary application, call identifying information, referred to in the TIA/EIA Standard as CDC (Call Data Channel) Messages, is delivered from an Intercept Access Point (IAP) switch that provides telephone service to a subject of an authorized surveillance order, to a law enforcement data collection box, utilizing Frequency Shift Keying (FSK) signals. Control signals are sent from the data collection box to the IAP switch utilizing Dual Tone Multi-Frequency (DTMF) signaling. The state of the art is advanced, and a contribution is made to law enforcement and other fields, as the invention allows replacement of costly and lengthily provisioned data delivery circuits, such as ISDN lines or private digital data circuits, with widely available and less expensive voice-band data delivery equipment.