Overview
ISO/IEC 13712-3:1995/Amd 1:1996 is an international standard amendment focused on Information Technology - Remote Operations within the Open Systems Interconnection (OSI) framework. This amendment specifically addresses the Remote Operations Service Element (ROSE) protocol specification, introducing practical enhancements for the mapping of ROSE onto the A-UNIT-DATA service as well as defining several built-in operations. It is a critical addendum developed under the joint technical committee ISO/IEC JTC 1, in conjunction with the International Telecommunication Union (ITU-T), reinforcing the interoperability and protocol handling in remote operation services across distributed and open systems.
Key Topics
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ROSE Protocol Enhancement: The amendment outlines procedures for projecting Application Protocol Data Units (APDUs) of the ROSE service element onto the connectionless A-UNIT-DATA service. This mapping enables more flexible remote operations over connectionless transport layers.
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Built-in Operations: Introduction of three essential operations-Probe, Acknowledge, and Cancel-used extensively in remote operation applications to improve communication reliability, manage acknowledgments, and handle operation cancellations.
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Transfer Realizations: Specification for three different transfer realizations involving distinct service implementations:
- Transfer via Presentation Data (P-DATA) in connection-oriented mode.
- Transfer via A-UNIT-DATA in a connectionless mode, focusing on the aggregation of multiple ROSE APDUs into a single presentation data value.
- Transfer via Reliable Transfer Service Element (RTSE), supporting reliable data transfers.
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Protocol Machine States: Detailed state machine descriptions and tables reflecting the new A-UNIT-DATA based transfer realization, which help implementers manage the states of data transfer effectively.
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Service Interactions: The amendment clarifies the interaction between ROSE services and related OSI services such as ACSE (Association Control Service Element), RTSE, and Presentation services, ensuring coherent protocol stacks in distributed information systems.
Applications
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Distributed Systems Management: Enables robust remote operation invocation in systems where operations need to be performed transparently across network boundaries without heavy connection overhead.
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Telecommunication Networks: Facilitates protocol implementations used in telecommunication equipment for managing remote commands and operation responses efficiently in both connectionless and connection-oriented environments.
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Application Protocol Development: Assists developers in designing application-level protocols that depend on remote operations, particularly those requiring reliable transfer mechanisms or lightweight connectionless communications.
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Open Systems Interconnection: Supports the construction and deployment of OSI-compliant systems, offering practical guidelines for ROSE protocol realizations that maintain interoperability within multilayered communication stacks.
Related Standards
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ISO/IEC 13712-2: Defines the Remote Operations Service Element (ROSE) service specification essential for understanding the amendment context.
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ITU-T X.217 (ISO/IEC 8649): Association Control Service Element (ACSE), which operates in conjunction with ROSE for connection management.
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ITU-T X.218 and X.228 (ISO/IEC 9066 series): Reliable Transfer Service Element (RTSE) standards providing reliable data transmission, referenced for transfer realizations.
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ITU-T X.216 (ISO/IEC 8822): Presentation Layer services which support the data transfer services used by ROSE.
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ISO/IEC 10035 series: Protocol specifications for ACSE, essential for implementing the full protocol stack alongside ROSE.
By adopting ISO/IEC 13712-3:1995/Amd 1:1996, organizations benefit from improved protocol reliability, enhanced data transfer flexibility, and standardized remote operation implementations suitable for complex international information technology environments.