1、Amendment 2:2002 toNational Standard of CanadaCAN/CSA-ISO/IEC 8649:02Amendment 2:1998 to International Standard ISO/IEC 8649:1996 has been adopted without modification asAmendment 2:2002 to CAN/CSA-ISO/IEC 8649:02. This Amendment was reviewed by the CSA TechnicalCommittee on Information Technology (
2、TCIT) under the jurisdiction of the Strategic Steering Committee onInformation Technology and deemed acceptable for use in Canada.February 2002Reference numberISO/IEC 8649:1996/Amd.2:1998(E)B CReference numberISO/IEC 8649:1996/Amd.2:1998(E)INTERNATIONALSTANDARDISO/IEC8649Second edition1996-10-15AMEN
3、DMENT 21998-09-15Information technology Open SystemsInterconnection Service definition for theAssociation Control Service ElementAMENDMENT 2: Fast-associate mechanismTechnologies de linformation Interconnexion de systmes ouverts(OSI) Dfinition de service applicable llment de service de contrledassoc
4、iationAMENDEMENT 2: Mcanisme dassociation rapideISO/IEC 8649:1996/Amd.2:1998(E) ISO/IEC 1998All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic ormechanical, including photocopying and microfilm, without p
5、ermission in writing from the publisher.ISO/IEC Copyright Office Case postale 56 CH-1211 Genve 20 SwitzerlandiiForewordISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form thespecialized system for worldwide standardization. National b
6、odies that are members of ISO or IEC participate in thedevelopment of International Standards through technical committees established by the respective organization to deal withparticular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Otheri
7、nternational organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. DraftInternational Standards adopted by the joint technical committe
8、e are circulated to national bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the national bodies casting a vote.Amendment 2 to ISO/IEC 8649:1996 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,Subcommittee SC 33, Distri
9、buted application services, in collaboration with ITU-T. The identical text is published as ITU-TRec. X.217/Amd.2.ISO/IEC 8649:1996/Amd.2:1998(E)ITU-T Rec. X.217 (1995)/Amd. 2 (1997 E) 1INTERNATIONAL STANDARDISO/IEC 8649 : 1996/Amd.2 : 1998 (E)ITU-T Rec. X.217 (1995)/Amd. 2 (1997 E)ITU-T RECOMMENDAT
10、IONINFORMATION TECHNOLOGY OPEN SYSTEMS INTERCONNECTION SERVICE DEFINITION FOR THE ASSOCIATIONCONTROL SERVICE ELEMENTAMENDMENT 2Fast-associate mechanism1) IntroductionAdd the following paragraphs:The fast-associate mechanism allows a session connection, including its embedded presentation connection
11、and applicationassociation, to be established using a compressed form of the information that would otherwise be sent on the S-CONNECTexchange. The compressed form, called the upper-layer context identifier, is a reference to an upper-layer context specification,which is a definition of the fields o
12、f the application, ACSE, presentation and session protocols that would be sent on the full-form connect messages. The upper-layer context identifier may be parameterized to include values for the variable fieldsallowed by the full form protocols for the upper layers.Within the ACSE service, the only
13、 addition is the presence of a conceptual parameter which summarizes the contents of theUser information of the A-ASSOCIATE primitives.2) Subclause 8.2.1In Table 2, add “User Summary” to the list of parameters for A-ASSOCIATE Service after User Information:3) Subclause 9.1.1.1Add a row in Table 3, a
14、fter User Information:Parameter Name Req Ind Rsp CnfUser Summary U C(=)U C(=)4) New subclause 9.1.1.18 bisAdd a new subclause 9.1.1.18 bis after 9.1.1.18:9.1.1.18 bis User summaryUser Summary is a parameter that summarizes the semantic content of the User Information, by reference to an upper-layercontext specification.ISO/IEC 8649:1996/Amd.2:1998(E) ISO/IECICS 35.100.70Descriptors: data processing, information interchange, network interconnection, open systems interconnection, communication procedure,control procedures, application layer.
