Open systems architecture

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Open systems architecture, in telecommunication, is a standard that describes the layered hierarchical structure, configuration, or model of a communications or distributed data processing system that:

Enables system description, design, development, installation, operation, improvement, and maintenance to be performed at a given layer or layers in the hierarchical structure
Allows each layer to provide a set of accessible functions that can be controlled and used by the functions in the layer above it
Enables each layer to be implemented without affecting the implementation of other layers
Allows the alteration of system performance by the modification of one or more layers without altering the existing equipment, procedures, and protocols at the remaining layers

Open systems architecture may be implemented using the OSI Model as a guide while designing the system to meet performance requirements.

Examples of independent alterations

Converting from wire to optical fibers at a physical layer without affecting the data link layer or the network layer except to provide more traffic capacity
Altering the operational protocols at the network level without altering the physical layer

References

This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22.

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Examples of independent alterations

See also

References