ISO 8648:1988

Provides an architectural model of the OSI Network Layer as a frame for OSI Network Layer standardization. Is intended for use in the design and applicable of Network Layer protocols. To be used to provide a common set of concepts and terminology for Network Layer standards; to analyse Network Layer functionality and classify Network Layer protocols; to specify the use of 'real network' in supporting or providing the OSI Network Service, above all, in cases where multiple 'real network' are to be interconnected and used.