Patents by Inventor Coendert J. Boltjes

Coendert J. Boltjes 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).

  • Communication system, network terminal unit to be used in a communication system and terminal to be connected to a communication system
    Patent number: 5524010
    Abstract: A communication system (1) operating according to the ISDN standard comprises a network terminal unit (2) to which ISDN terminals (TE1 . . . TEn) can be connected via a bus (4). The network terminal unit (2) and the terminals (TE1 . . . TEn) communicate with each other over an ISDN S-interface (S.sub.0). The network terminal unit (2) itself provides setting up a local communication between two terminals (TE1, TE2) connected to the bus (4). As a result, further elements in the communication system (1), such as the central control unit (3), are not loaded with this. If a local communication is to be set up, the calling terminal (TE1) is to insert an indicator (LC) in the first message (SET UP) to be sent, on the basis of which indicator the routing means set up transparently the local communication to a called terminal (TE2) connected to the bus (4).
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: June 4, 1996
    Assignee: U.S. Philips Corporation
    Inventor: Coendert J. Boltjes