Content.- I Opening Speech.- Design Considerations for Data Networking via Satellite Systems.- II Protocols.- Satellite Link Communication Protocols.- The Levels of the OSI — Reference Model and their Application for Concatenating Qualitatively Differing Networks.- Modelling Assignment Procedures and Link Control Procedures as a Queueing Network.- III Gateways/Network Access.- Packet Satellite Technology Reference Sources.- Transport Protocol Performance over Concatenated Local Area and Satellite Networks.- The ESA Satellite Communications Controller.- Dynamic Bandwidth Allocation in a TDMA-System.- Discussion of Session II and III.- IV Computer Communications via Satellites.- Computer Communications through Telecommunications Satellite Systems — The NADIR Project.- Impact of Satellite Technoloy on Transmission Protocols.- Interconnecting DANUBE Networks through Satellite Links.- High Speed File Transfer, Point to Point and Multipoint, Using Satellite Links.- V Applications.- STELLA: Results of Two Years of Operation for Megabit/Sec Data Transmission.- The Newspaper Arrives by Satellite — Experience in Full Page Transmission of the “Financial Times” from London to Frankfurt am Main via Satellite.- Applications for Specialized Satellite Systems in Europe.- VI Services.- TELECOM I — A National Satellite for Domestic and Business Services.- Future Services of the Deutsche Bundespost for “High Speed Data Communication”.- Discussion of Sessions IV, V, and VI.- VII Final Panel Discussion.- Data Communication Networks via Satellites — Part of Integrated Communication Services.