Patents by Inventor Randall Wuerfel

Randall Wuerfel 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).

  • System and method for utilizing direct user signaling to enhance fault tolerant H.323 systems
    Patent number: 7724641
    Abstract: An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier directly to a second client terminal. The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a direct signaling connection to the second client terminal as back up. However, no media channels are established for this backup signaling. The secondary control unit (110b) checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 25, 2010
    Assignee: Siemens Enterprise Communications, Inc.
    Inventors: Shmuel Shaffer, William J. Beyda, Randall Wuerfel
  • System and method for utilizing direct user signaling to enhance fault tolerant H.323 systems
    Publication number: 20050058061
    Abstract: An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier directly to a second client terminal. The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a direct signaling connection to the second client terminal as back up. However, no media channels are established for this backup signaling. The secondary control unit (110b) checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 17, 2005
    Inventors: Shmuel Shaffer, William Beyda, Randall Wuerfel
  • System and method for utilizing direct user signaling to enhance fault tolerant H.323 systems
    Patent number: 6738343
    Abstract: An H.323 client terminal (102) according to an embodiment of the invention employs primary and secondary H.323 control units or state machines (110a, 110b). The primary control unit (110a) sends signaling messages to a primary gatekeeper (108a) and triggers the secondary control unit (110b) to send a message with an appropriate correlation identifier directly to a second client terminal. The primary control unit (110a) establishes a call per standard H.323 protocols. The secondary control unit (110b) also establishes a direct signaling connection to the second client terminal as back up. However, no media channels are established for this backup signaling. The secondary control unit (110b) checks the status of the call with the primary control unit (110a). If the call signaling on the primary control unit (110a) is proceeding normally, no further action is taken.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: May 18, 2004
    Assignee: Siemens Information & Communication Networks, Inc.
    Inventors: Shmuel Shaffer, William J. Beyda, Randall Wuerfel