Patents by Inventor David Frederick McGuigan

David Frederick McGuigan 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).

  • ALTERNATE ROUTING OF COMMUNICATIONS IN A PACKET-BASED NETWORK
    Publication number: 20150304504
    Abstract: A method for performing alternate and therefore least cost routing in distributed H.323 Voice over IP (VoIP) networks is provided. With this method, the VoIP network consists of a hierarchy of gatekeeper (GK) functions to provide alternate routing, network element redundancy, and scalability. The alternate routing function is performed by a directory gatekeeper with route selection advancing from a first route to a second route by either of two conditions: (1) there are no resources available to terminate the call in the first zone; and (2) a lack of response to the directory GK request for such resources.
    Type: Application
    Filed: February 3, 2015
    Publication date: October 22, 2015
    Inventors: David Frederick McGuigan, Harry Edward Mussman, John Joseph McCabe, Robert Kellar Israel, Eric Richard Sporel
  • Alternate routing of voice communication in a packet-based network
    Patent number: 8948190
    Abstract: A method for performing alternate and therefore least cost routing in distributed H.323 Voice over IP (VoIP) networks is provided. With this method, the VoIP network consists of a hierarchy of gatekeeper (GK) functions to provide alternate routing, network element redundancy, and scalability. The alternate routing function is performed by a directory gatekeeper with route selection advancing from a first route to a second route by either of two conditions: (1) there are no resources available to terminate the call in the first zone; and (2) a lack of response to the directory GK request for such resources.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: February 3, 2015
    Assignee: Level 3 Communications, LLC
    Inventors: David Frederick McGuigan, Harry Edward Mussman, John Joseph McCabe, Robert Kellar Israel, Eric Richard Sporel
  • ALTERNATE ROUTING OF VOICE COMMUNICATION IN A PACKET-BASED NETWORK
    Publication number: 20100226363
    Abstract: A method for performing alternate and therefore least cost routing in distributed H.323 Voice over IP (VoIP) networks is provided. With this method, the VoIP network consists of a hierarchy of gatekeeper (GK) functions to provide alternate routing, network element redundancy, and scalability. The alternate routing function is performed by a directory gatekeeper with route selection advancing from a first route to a second route by either of two conditions: (1) there are no resources available to terminate the call in the first zone; and (2) a lack of response to the directory GK request for such resources.
    Type: Application
    Filed: May 17, 2010
    Publication date: September 9, 2010
    Inventors: David Frederick McGuigan, Harry Edward Mussman, John Joseph McCabe, Robert Kellar Israel, Eric Richard Sporel
  • Alternate routing of voice communication in a packet-based network
    Patent number: 7720084
    Abstract: A method for performing alternate and therefore least cost routing in distributed H.323 Voice over IP (VoIP) networks is provided. With this method, the VoIP network consists of a hierarchy of gatekeeper (GK) functions to provide alternate routing, network element redundancy, and scalability. The alternate routing function is performed by a directory gatekeeper with route selection advancing from a first route to a second route by either of two conditions: (1) there are no resources available to terminate the call in the first zone; and (2) a lack of response to the directory GK request for such resources.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: May 18, 2010
    Assignee: Level 3 Communications, LLC
    Inventors: Harry Edward Mussman, John Joseph McCabe, David Frederick McGuigan, Robert Kellar Israel, Eric Richard Sporel
  • Alternate routing of voice communication in a packet-based network
    Patent number: 7339934
    Abstract: A method for performing alternate and therefore least cost routing in distributed H.323 Voice over IP (VoIP) networks is provided. With this method, the VoIP network consists of a hierarchy of gatekeeper (GK) functions to provide alternate routing, network element redundancy, and scalability. The alternate routing function is performed by a directory gatekeeper with route selection advancing from a first route to a second route by either of two conditions: (1) there are no resources available to terminate the call in the first zone; and (2) a lack of response to the directory GK request for such resources.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: March 4, 2008
    Assignee: Level 3 Communications, LLC
    Inventors: Harry Edward Mussman, John Joseph McCabe, David Frederick McGuigan, Robert Kellar Israel, Eric Richard Sporel
  • Alternate routing of voice communication in a packet-based network
    Publication number: 20030012178
    Abstract: A method for performing alternate and therefore least cost routing in distributed H.323 Voice over IP (VoIP) networks is provided. With this method, the VoIP network consists of a hierarchy of gatekeeper (GK) functions to provide alternate routing, network element redundancy, and scalability. The alternate routing function is performed by a directory gatekeeper with route selection advancing from a first route to a second route by either of two conditions: (1) there are no resources available to terminate the call in the first zone; and (2) a lack of response to the directory GK request for such resources.
    Type: Application
    Filed: April 6, 2001
    Publication date: January 16, 2003
    Inventors: Harry Edward Mussman, John Joseph McCabe, David Frederick McGuigan, Robert Kellar Israel, Eric Richard Sporel