ISO/IEC 15954-ed.1.0

Detail information

Designation: ISO/IEC 15954-ed.1.0

Publication date: 16/12/1999

Pages: 70

Country: International technical standard

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Anotation

The ACSE supports two modes of communication: connection-mode and connectionless-mode. The ACSE service definition (see ITU-T Rec. X.217 bis | ISO/IEC 15953) includes both modes of communication. This Recommendation | International Standard only includes the connection mode of communication. This Recommendation | International Standard for the connectionless mode of communication is contained in ITU-T Rec. X.237 bis | ISO/IEC 15955. This Recommendation | International Standard defines procedures that are applicable to instances of communication between systems which wish to interconnect in an open systems interconnection environment in a connection mode. This Recommendation | International Standard includes the Kernel functional unit that is used to establish and release ASO-associations. The Authentication functional unit provides additional facilities for exchanging information in support of authentication during association establishment without adding new services. The ACSE authentication facilities can be used to support a limited class of authentication methods. The ASO-context negotiation functional unit provides the additional facility for the recipient to select the ASO-context from a list offered by the initiator during association establishment. The optional Higher Level Association functional unit provides for the facility to identify ASO-associations and transparently pass data to child ASOs and allows the ASO-context or the presentation context on an ASO-association to be modified during the lifetime of the association. This Recommendation | International Standard specifies: a) procedures for the transfer of information for ASO-association control and the authentication of ASOs and application-entities; and b) the abstract syntax for the representation of the ACSE APDUs. The ACSE procedures are defined in terms of: a) the interactions among peer ACSE protocol machines through the use of Presentation services or supporting ACSE services; and b) the interaction between an ACSE protocol machine and its service-user. This Recommendation | International Standard also specifies conformance requirements for systems implementing these procedures. It does not contain tests which can be used to demonstrate conformance. Lelement ACSE accepte deux modes de communication: le mode connexion et le mode sans connexion. La definition du service ACSE (voir la Rec. UIT-T X.217 bis | ISO/CEI 15953) englobe ces deux modes de communication. La presente Recommandation | Norme internationale comprend uniquement le mode connexion. La Recommandation | Norme internationale pour le mode sans connexion est comprise dans la Rec. UIT-T X.237 bis | ISO/CEI 15955. La presente Recommandation | Norme internationale definit les procedures applicables a des instances de communication entre des systemes qui desirent sinterconnecter dans un environnement OSI en mode connexion. La presente Recommandation | Norme internationale inclut lunite fonctionnelle Kernel qui est utilisee pour etablir les associations dobjet ASO et y mettre fin. Lunite fonctionnelle dauthentification offre des fonctions supplementaires qui permettent lechange dinformations destinees a assurer lauthentification pendant letablissement de lassociation sans que soient ajoutes de nouveaux services. Les fonctions dauthentification de lelement ACSE peuvent etre utilisees pour la prise en charge dune classe limitee de methodes dauthentification. Lunite fonctionnelle de negociation du contexte dobjet ASO offre des fonctions supplementaires qui permettent de choisir le contexte dobjet ASO a partir dune liste offerte par le demandeur pendant letablissement de lassociation. Lunite fonctionnelle facultative pour les associations de niveau superieur offre des fonctions didentification des associations dobjet ASO, de transmission de donnees transparente vers des objets ASO enfants et de modification du contexte dobjet ASO ou du contexte de presentation dune association dobjet ASO pendant la duree de vie de lassociation. La presente Recommandation | Norme internationale specifie: a) les procedures de transfert des informations concernant le controle de lassociation dobjet ASO et lauthentification des objets ASO et entites dapplication; b) la syntaxe abstraite de representation des unites APDU de lelement ACSE. Les procedures ACSE sont definies en termes: a) dinteractions entre machines protocolaires ACSE homologues, via lutilisation de services de presentation ou de services ACSE de soutien; b) dinteractions entre une machine protocolaire ACSE et son utilisateur du service. La presente Recommandation | Norme internationale specifie egalement les conditions de conformite des systemes mettant en oeuvre ces procedures. Elle ne contient pas de tests qui pourraient etre utilises pour prouver cette conformite.