Objective
The objective of the SEDOS project was to define formal description techniques and support tools for the development and implementation of OSI protocols and services and, more generally, of open distributed systems.
Two formal languages were defined: ESTELLE (based on a machine-state model), and LOTOS, which combines the algebraic specification language ACT-ONE and the CCS calculus.
The objective of the project was to define formal description techniques and support tools for the development and implementation of open system interconnection (OSI) protocols and services and, more generally, of open distributed systems. Two formal languages were defined: ESTELLE (based on a machine-state model), and LOTOS, which combines the algebraic specification language ACT-ONE and the calculus of communicating systems (CCS). Prototypes of syntax directed editors, compilers, simulators, debugging tools, and verification (proof) tools for both ESTELLE and LOTOS were produced. Formal descriptions of a large number of OSI protocols and services were presented. Work in International Standards Organization (ISO) on standardisation of the formal description techniques (FDT) resulted in both languages attaining draft international standard. New theories for verification of protocol specifications were presented.
The results were:
-Prototypes of syntax-directed editors, compilers, simulators, debugging tools, and verification (proof) tools for both ESTELLE and LOTOS.
-Formal descriptions of a large number of OSI protocols and services.
-Work in ISO on standardisation of the FDT (Formal Description Techniques), resulting in both languages attaining draft international standard. This resulted in an international standard in 1988.
-New theories for verification of protocol specifications.
A follow-up project (1265) has developed an ESTELLE workstation, and will use some real life projects in an industrial environment to demonstrate the benefit of the SEDOS approach towards protocol development.
Exploitation
There is a strong commitment to exploit the results of the LOTOS part of the project. Through the contribution of this project, formalisation of the development of protocols and communication software is becoming one of the most important approaches for industry to develop the increasingly complex distributed systems of tomorrow.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
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Coordinator
31077 TOULOUSE
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.