Information processing systems; Open Systems Interconnection; Protocol for providing the connectionless-mode transport service

This document outlines a technical specification developed by an international standards organization to address data communication within open systems. It focuses specifically on the transport layer architecture designed for environments where connection-oriented protocols are not suitable. The standard establishes a set of rules and procedures for delivering data without requiring a pre-established logical connection between communicating entities. By defining the necessary service primitives, interface requirements, and message exchange formats, it enables diverse hardware and software platforms to interoperate reliably in complex networked environments. This approach ensures that non-connected type transmission services can be implemented consistently across different Information Processing Systems. The specification supports scenarios where simplicity, speed, or specific application requirements make connection setup undesirable or unnecessary. Its scope covers the functional elements required to provide these services while maintaining interoperability among systems from various manufacturers. Through clear definitions of data units and service boundaries, it facilitates the integration of communication components within the broader Open Systems Interconnection reference model.