Patents Assigned to AT&T Intellectutal Property I, LP
  • Methods and apparatus to test a subscriber line for a broadband access service
    Patent number: 8687771
    Abstract: Methods and apparatus to test a subscriber line for a broadband access service are disclosed. An example network interface device (NID) comprises a tone generator to transmit a tone on a subscriber line to characterize the subscriber line while a DSL modem is providing a DSL service via the subscriber line, the tone having a frequency occurring within a range of frequencies in use by the DSL modem to provide the DSL service, and a pair of terminals to couple the DSL modem and the tone generator to the subscriber line.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: April 1, 2014
    Assignee: AT&T Intellectutal Property I, LP
    Inventors: Jin Wang, Kapil Shrikhande
  • G.P.S. management system
    Patent number: 8010251
    Abstract: A management system using Global Positioning System receivers for tracking remote units from a central office and quickly and conveniently determining if those remote units have varied from a set of predetermined parameters of operation. The system also includes provisions that allows information to be sent from the remote units to the central office and vice versa. The system also has safety features that promote the rapid dispatch of law enforcement personnel when requests for emergency assistance have been made from the remote units.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: August 30, 2011
    Assignee: AT&T Intellectutal Property I, LP
    Inventors: Marvin R. Hamrick, R. T. Mitchell Ingman