EN ISO/IEC 7498-1 : 1995

1 Scope
2 Definitions
3 Notation
4 Introduction to Open Systems Interconnection (OSI)
    4.1 Definitions
    4.2 Open System Interconnection Environment
    4.3 Modelling the OSI Environment
5 Concepts of a layered architecture
    5.1 Introduction
    5.2 Principles of layering
    5.3 Communication between peer-entities
    5.4 Identifiers
    5.5 Properties of service-access-points
    5.6 Data-units
    5.7 The nature of the (N)-service
    5.8 Elements of layer operation
    5.9 Routing
    5.10 Quality Of Service (QOS)
6 Introduction to the specific OSI layers
    6.1 Specific layers
    6.2 The principles used to determine the seven
         layers in the Reference Model
    6.3 Layer descriptions
    6.4 Combinations of connection-mode and connection-
         less mode
    6.5 Configurations of OSI Open Systems
7 Detailed description of the resulting OSI
    architecture
    7.1 Application Layer
    7.2 Presentation Layer
    7.3 Session Layer
    7.4 Transport Layer
    7.5 Network Layer
    7.6 Data Link Layer
    7.7 Physical Layer
8 Management aspects of OSI
    8.1 Definitions
    8.2 Introduction
    8.3 Categories of management activities
    8.4 Principles for positioning management function
9 Compliance and consistency and compliance
    requirements
    9.1 Definitions
    9.2 Application of consistency and compliance
         requirements
Annex A - Brief explanation of how the layers were
            chosen
Annex B - Alphabetical index to definitions

Provides a common basis for standards development for systems interconnection, while allowing existing standards to drawn into perspective within the overall Reference Model.