BS ISO/IEC 10021/3 : 1990

Foreword
Introduction
Section one - Introduction
1. Scope
2. Normative references
3. Definitions
4. Abbreviations
5. Conventions
5.1 ASN.1
5.2 Terms
Section two - Abstract Service Definition Conventions
6. Overview
7. Abstract Models
7.1 Abstract Objects
7.2 Abstract Ports
7.3 Abstract Services
7.4 Abstract Refinements
8. Abstract Services
8.1 Abstract Procedures
8.2 Abstract Bind Operations
8.3 Abstract Unbind Operations
8.4 Abstract Operations
8.5 Abstract Errors
Section three - Abstract Service Realizations
9. Overview
10. OSI Realizations
10.1 ROS Realizations
10.2 Non-ROS Realizations
11. Proprietary Realizations
11.1 Distributed Realizations
11.2 Non-distributed Realizations
Annexes
A. Example of Use of Abstract Service Notation
A.1 Assignment of Object Identifiers
A.2 Refinement of Yellow Environment
A.3 Definition of Yellow Abstract Service
A.4 Refinement of Green Environment
A.5 Definition of Green Abstract Service
A.6 Refinement of Yellow System
A.7 Realization of Yellow System
A.8 Realization of Green System
B. Reference Definition of Object Identifiers
C. Reference Definition of Notation
D. Differences Between ISO/IEC 10021-3 and CCITT
     Recommendation X.407
E. Index

Describes the conventions used to specify the distributed information processing tasks that arise in Message Handling. Section one is this introduction. Section two specifies the conventions for defining a distributed information processing task abstractly. Section three gives principles for realizing the communication aspects of such tasks concretely, such as by Open Systems Interconnection protocols. Annexes provide important supplemental information.