Patents by Inventor Richard L. Khan

Richard L. Khan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7639792
    Abstract: In a particular embodiment a system and method for processing a call in a Voice over internet protocol (VoIP) network are disclosed. The method includes receiving the call associated with a private identifier (PRID) at a server, classifying a call location based on the PRID and sending the call from the server to a Public Safety Answering Point (PSAP) with a call back number associated with the PRID. The system includes a first server interface for receiving a message containing a PRID associated with the call, a second server interface to access the data base for searching for the PRID in the data structure; a third server interface to receive an output from the database indicating whether a PRID has been found in the data structure; and a fourth server interface to send the call to a PSAP.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: December 29, 2009
    Assignee: ATT Knowledge Ventures, L.P.
    Inventors: Chaoxin Qiu, Richard L. Khan, Robert F. Dailey, Keith Joseph Allen, Geoffrey R. Zampiello
  • Publication number: 20090193071
    Abstract: A disclosed application docking module (ADM) for use in a communication network includes a message monitor, an application monitor, and an anomaly handler. The message monitor monitors messages exchanged between a monitored application server and a session control layer resource of the network and the application monitor monitors a heartbeat of the application server. Based on the monitoring, the module determines when the application server is in an anomaly state. The anomaly state may indicate abnormal or otherwise unexpected application server messaging activity and/or an unexpected heartbeat status. The ADM processes application server messages on behalf of the application server when the application server is operating in an anomaly state. The ADM may, for example, block messages outgoing from the application server and process messages incoming to the application server by redirecting messages, returning messages to their sender, or generating an error code.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 30, 2009
    Applicant: AT&T KNOWLEDGE VENTURES, L.P.
    Inventors: Chaoxin Qiu, Robert F. Dailey, Richard L. Khan
  • Publication number: 20090097471
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to adjust a call processing logic for Session Initiated Protocol to Integrated Services Digital Network User Part (ISUP) calls based at least in part on interworking profiles assigned to ISUP trunk groups supporting the calls. Additional embodiments are disclosed.
    Type: Application
    Filed: October 11, 2007
    Publication date: April 16, 2009
    Applicant: AT&T KNOWLEDGE VENTURES, LP
    Inventors: CHAOXIN QIU, RICHARD L. KHAN, LILLIAN DANNENBERG
  • Publication number: 20080200143
    Abstract: Example systems and methods to manage location information for emergency services support of an internet protocol (“IP”) communication device are disclosed. A disclosed example method involves storing first and second geographic location information in a first list of geographic location information associated with an internet protocol device. The first list is stored at a service provider server. At least a partial copy of the first list is communicated from the service provider server to the internet protocol device for storing as a second list of geographic location information in the internet protocol device.
    Type: Application
    Filed: February 20, 2007
    Publication date: August 21, 2008
    Inventors: Chaoxin Charles Qiu, Richard L. Khan, Robert F. Dailey
  • Publication number: 20080144605
    Abstract: Fault tolerant VoIP systems and methods to operate the same are disclosed. An example method comprises receiving a registration request at an edge device of a voice over Internet protocol (VoIP) system from a user device, selecting at the edge device a communication service providing device from a list of devices configured to provide communication services, sending the registration request to the selected communication service providing device, and receiving a registration response from the selected communication service providing device.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Inventors: Chaoxin Charles Qiu, William R.J. Chorley, Richard L. Khan, Satish Parolkar, Robert F. Dailey, James Jackson
  • Publication number: 20080101552
    Abstract: Example systems and methods to manage location information for emergency services support of an internet protocol (“IP”) communication device are disclosed. A disclosed example method involves determining a geographic location change status associated with the IP device. A message is then forwarded to the IP device based on the geographic location change status requesting a user to confirm whether a registered geographic location associated with the IP device is a current geographic location of the IP device.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Inventors: Richard L. Khan, Chaoxin Qiu, Robert F. Dailey