The purpose of this Reference Model of Open Systems Interconnection is to provide a common basis for the coordination of standards development for the purpose of systems interconnection, while allowing existing standards to be placed into perspective within the overall Reference Model.
ITU-T X.200 FRENCH-1994 history
1994ITU-T X.200 FRENCH-1994 INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - BASIC REFERENCE MODEL: THE BASIC MODEL