Internet protocol based integrated on-Board information system IBIS-IP : Part 2: interface specification / VDV, die Verkehrsunternehmen ; Gesamtbearbeitung overall editing: expert committee for telematics and information systems ATI, sub-committee for communications and information systems UA-KIS ; contributors: Dipl.-Ing. Dirk Weisser, Init, Karlsruhe, Dr. Torsten Franke, IVU, Aachen, Dr. Holger Bandelin, Scheidt & Bachmann, Mönchengladbach, Dipl.-Ing. Berthold Radermacher, VDV, Cologne, Dipl.-Ing. Andreas Wehrmann, VDV, Cologne, Dipl.-Ing. ETH Walter Meier-Leu, we, Schaffhausen