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:
Feb. 12, 2008
Filed:
Jun. 13, 2003
Applicants:
Wim L. Brouwer, North Aurora, IL (US);
Antony Thomas, Burr Ridge, IL (US);
Inventors:
Wim L. Brouwer, North Aurora, IL (US);
Antony Thomas, Burr Ridge, IL (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A secondary directory telephone number (SDN) is assigned either to each voice over IP (VOIP) IP port utilized by subscribers or to each public safety access point (PSAP). The SDN, MAC address of the IP port accessed by a subscriber, and geographic location of the SDN or MAC address are stored in a database. This information is accessed by the PSAP based on SDN or MAC address to obtain the location of a VOIP subscriber to facilitate providing emergency services in response to a 911 call by a VOIP subscriber.