system, and the message passing operating system Chorus. Hubert Zimmermann used his experience in CYCLADES to influence the design of the OSI model, which is still a common pedagogical tool. Gérard Le Lann worked with Vint Cerf and Bob Kahn to incorporate concepts from the CYCLADES project into the original design of the Transmission Control Program. CYCLADES alumni and researchers at IRIA/INRIA were also influential in spreading adoption of the Internet in France, eventually witnessing the success of the datagram-based Internet, and the demise of the X.25 and ATM virtual circuit networks. See also History of the Internet Internet in France § History NPL network References Notes Further reading Louis Pouzin (editor), The Cyclades Computer Network: Toward Layered Network Architectures (North-Holland, Amsterdam, 1982) External links Demise of Cyclades Experimental computer networks French inventions History of computing in France History of the Internet