Patents Assigned to DTM Data TeleMark GmbH
  • Method and apparatus for the enlargement of the reach of the transmission channel between functional groups of an ISDN-user interface
    Patent number: 5673258
    Abstract: One, or more, ISDN interfaces have their reach extended without violating ISDN interface standards by a method which converts ISDN coded information which is to be delivered over an extended channel into binary coded data prior to transmission, transmitting the binary coded information to a receiver at an extended location and there, after storage, and assembly, converting the binary coded data into ISDN specific coded data for delivery to an ISDN interface.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: September 30, 1997
    Assignee: DTM Data TeleMark GmbH
    Inventors: Klaus Helbig, Roland Geissler, Norbert Wulst