Considering the urgency of the need for standards which would allow constitution of heterogeneous computer networks, ISO created a new subcommittee for "Open Systems Interconnection" (ISO/ TC97/SC 16) in 1977. The first priority of subcommittee 16 was to develop an architecture for open systems interconnection which could serve as a framework for the definition of standard protocols. As a result of 18 months of studies and discussions, SC16 adopted a layered architecture comprising seven layers (Physical, Data Link, Network, Transport, Session, Presentation, and Application). In July 1979 the specifications of this architecture, established by SC16, were passed under the name of "OSI Reference Model" to Technical Committee 97 "Data Processing" along with recommendations to start officially, on this basis, a set of protocols standardization projects to cover the most urgent needs. These recommendations were adopted by T.C97 at the end of 1979 as the basis for the following development of standards for Open Systems Interconnectlon within ISO. The OSI Reference Model was also recognized by CCITT Rapporteur's Group on "Layered Model for Public Data Network Services". This paper presents the model of architecture for Open Systems Interconnection developed by SC16. Some indications are also given on the initial set of protocols which will-likely be developed in this OSI Reference Model.

Notas/Comentarios de J.A.Delgado-Penín:
Este artículo breve fue preparado por el Dr. Zimmermann como trabajo de presentación en la sociedad IEEE COMSOC (1980) del modelo de referencia OSI para redes de Telecomunicación digitales. Resume trabajos dispersos realizados en la organización ISO y aceptados posteriormente por la UIT. Es un artículo resumen de lo que se consideró el primer modelo de interpretación de las redes de Telecomunicación utilizando el concepto de las siete capas y que fue el fruto del grupo denominado SC16 dentro de la organización internacional de estándares (ISO). Aparecen por primera vez términos como: arquitectura de interconexión; las siete capas; identificadores y protocolos varios.

Especificaciones

  • Autor/es: H. Zimmermann.
  • Año: 1980.
  • Publicado en: IEEE Transactions on Communications (Volume: 28, Issue: 4, April 1980, Pages: 425-432).
  • Idioma: Inglés
  • Formato: PDF
  • Contribución: José Antonio Delgado-Penín.
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