Patents by Inventor George D. Zally

George D. Zally 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).

  • Interface circuit for interconnecting circuit switched and packet switched systems
    Patent number: 4723238
    Abstract: An interface circuit is described for interconnecting a packet switched system to a circuit switched system which enables a uniform dialing plan to be utilized to establish intra-system or inter-system connections. This is accomplished by assigning each terminal of the packet switched system a unique terminal address similar to the extension number used for terminals of the circuit switched system. The interface also distinguishes data call set-up requests from other control commands received from the packet switched system.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: February 2, 1988
    Assignees: American Telephone and Telegraph Company, AT&T Information Systems Inc.
    Inventors: Charles M. Isreal, David C. Jones, Jr., Cheng-Jen Yang, George D. Zally