Content Description

This Recommendation | International Standard defines a Systems Management Function that may be used by an application process in a centralized or decentralized management environment to interact for the purpose of systems management, as defined by ITU-T Rec. X.200 | ISO/IEC 7498-1. This Recommendation | International Standard defines a function which consists of generic definitions, services, and functional units. This function is positioned in the application layer of ITU-T Rec.X.200 | ISO/IEC 7498-1 and is defined according to the model provided by ISO 9545. The role of systems management functions is described by CCITT Rec. X.701 | ISO /IEC 10040.

This Recommendation | International Standard:

• defines a service for the management of clocks for use by OSI management and available for use by OSI applications and others;
• establishes user requirements for this Recommendation | International Standard;
• establishes a time management function model, addressing the components of a generic time service involving communication between systems, that relates the service and generic definitions provided by this function to the user requirements;
• defines generic object classes, attribute types, operation types, notification types, and parameters documented in accordance with CCITT Rec. X.722 | ISO/IEC 10165-4;
• specifies compliance requirements placed on other standards that make use of these generic definitions;
• defines the services provided by the function;
• specifies the management protocol that is necessary in order to provide the services;
• defines the relationship between these services and systems management operations and notifications;
• specifies the abstract syntax necessary to identify and negotiate the function unit in the protocol;
• defines relationships with other systems management functions;
• specifies conformance requirements to be met by implementation of this Recommendation | International Standard;
• identifies time synchronization protocols.

This Recommendation | International Standard does not:

• address the provision of time information within a local system;
• define the nature of any implementation intended to provide the Time Management Function;
• specify the manner in which management is accomplished by the user of the Time Management Function;
• define the nature of any interaction which results in the use of the Time Management Function;
• specify the services necessary for the establishment, use, and normal or abnormal release of a management association.

About ISO

ISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better.