CAN CSA-ISO IEC 8326A-2002 Information technology - Open Systems Interconnection - Session service definition AMENDMENT 1 Efficiency enhancements.pdf

1、Amendment 1:2002 toNational Standard of CanadaCAN/CSA-ISO/IEC 8326:02Amendment 1:1998 to International Standard ISO/IEC 8326:1996 has been adopted without modification asAmendment 1:2002 to CAN/CSA-ISO/IEC 8326:02. 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 8326:1996/Amd.1:1998(E)B CReference numberISO/IEC 8326:1996/Amd.1:1998(E)INTERNATIONALSTANDARDISO/IEC8326Second edition1996-09-15AMEN

3、DMENT 11998-10-01Information technology Open SystemsInterconnection Session servicedefinitionAMENDMENT 1: Efficiency enhancementsTechnologies de linformation Interconnexion de systmes ouverts(OSI) Dfinition du service de sessionAMENDEMENT 1: Amliorations defficacitISO/IEC 8326 : 1996/Amd.1 : 1998 (E

4、) ISO/IEC 1998All rights reserved. Unless otherwise specified, no part of this publication may be reproduced orutilized in any form or by any means, electronic or mechanical, including photocopying and micro-film, without permission in writing from the publisher.ISO/IEC Copyright Office Case postale

5、 56 CH-1211 Genve 20 SwitzerlandiiContents Page1) New subclause 2.3 . 12) Subclause 3.3. 13) Subclause 9.1. 14) New subclause 9.1.1 bis. 15) Subclause 11.1. 16) Subclause 12.1.2 27) Subclause 12.1.2.7. 28) New subclauses 12.1.2.11 and 12.1.2.12 . 29) Subclause 13.1.2 210) Subclause 14.1.1 211) Subcl

6、ause A.5.1 . 312) Subclause A.5.4.14 3 ISO/IEC ISO/IEC 8326 : 1996/Amd.1 : 1998 (E)iiiForewordISO (the International Organization for Standardization) and IEC (the Inter-national Electrotechnical Commission) form the specialized system for worldwidestandardization. National bodies that are members o

7、f ISO or IEC participate in thedevelopment of International Standards through technical committees establishedby the respective organization to deal with particular fields of technical activity.ISO and IEC technical committees collaborate in fields of mutual interest. Otherinternational organization

8、s, governmental and non-governmental, in liaison withISO and IEC, also take part in the work.In the field of information technology, ISO and IEC have established a jointtechnical committee, ISO/IEC JTC 1. Draft International Standards adopted by thejoint technical committee are circulated to nationa

9、l bodies for voting. Publicationas an International Standard requires approval by at least 75 % of the nationalbodies casting a vote.Amendment 1 to ISO/IEC 8326:1996 was prepared by Joint Technical CommitteeISO/IEC JTC 1, Information technology, Subcommittee SC 33, Distributedapplication services, i

10、n collaboration with ITU-T. The identical text is publishedas ITU-T Rec. X.215/Amd.1.ISO/IEC 8326 : 1996/Amd.1 : 1998 (E)ITU-T Rec. X.215 (1995)/Amd.1 (1997 E) 1INTERNATIONAL STANDARDISO/IEC 8326 : 1996/Amd.1 : 1998 (E)ITU-T Rec. X.215 (1995)/Amd.1 (1997 E)ITU-T RECOMMENDATIONINFORMATION TECHNOLOGY

11、OPEN SYSTEMS INTERCONNECTION SESSION SERVICE DEFINITIONAMENDMENT 1Efficiency enhancements1) New subclause 2.3Add a new subclause as shown below:2.3 Additional references ITU-T Recommendation X.225/Add.1 (1995), Open Systems Interconnection Protocol specification forSession layer efficiency enhanceme

12、nts.2) Subclause 3.3Add a new subclause 3.3.12, after 3.3.11 as shown below:3.3.12 Special-user-data: A parameter exchanged in the S-CONNECT and S-DATA primitives between the SS-usersto indicate the nature of the encodings in the SS-user-data parameter.3) Subclause 9.1Add the following row and the f

13、ollowing Note to Table 2:4) New subclause 9.1.1 bisAdd the following new subclause after 9.1.1:9.1.1 bis No-orderly-release functional unitThis functional unit removes orderly release from the kernel functional unit. Abortive release is available. It is notpossible to select this functional unit and

14、 the negotiated release functional unit for use on the same session connection.NOTE This orderly release capability would more logically be a functional unit separate from the kernel; this “negative”functional unit provides compatibility with earlier specifications that require the (non-negotiable)

15、kernel to be indivisible.5) Subclause 11.1In Table 5, add User Summary and Special-user-data at the end of the list of parameters.Functional unit Service(s) ReferenceNo-orderly-release Note 9.1.1 bisNOTE This functional unit removes the orderly release services from the kernel functional unit. This

16、“negative” functional un itprovides compatibility with ITU-T Rec. X.215 | ISO/IEC 8326 which requires the (non-negotiable) kernel to be indivisible.ISO/IEC 8326 : 1996/Amd.1 : 1998 (E)2 ITU-T Rec. X.215 (1995)/Amd.1 (1997 E)6) Subclause 12.1.2Add two rows in Table 9, after SS-user data:7) Subclause

17、12.1.2.7Add the following item to the list of functional units:n) no-orderly-release functional unitAdd the following sentence to the antepenultimate sentence of this subclause:It is not possible to select the no-orderly-release functional unit and the negotiated release functional unit for use on t

18、hesame session connection.8) New subclauses 12.1.2.11 and 12.1.2.12Add after 12.1.2.10:12.1.2.11 User Summary is a parameter that summarizes the semantic content of the User data, by reference to anUpper-layer context specification.12.1.2.12 Special user-data is a parameter that may be exchanged by

19、SS-users to indicate the nature of the encodings ofthe SS-user-data parameter.NOTE The Special user-data parameter is not visible at the Presentation service interface defined in ITU-T Rec. X.216 |ISO/IEC 8822. This parameter is intended for use at the Presentation/Session boundary.9) Subclause 13.1

20、.2Add the following text to the end of this subclause with the accompanying Note:The Special user-data parameter may be exchanged between two SS-users.NOTE The Special user-data parameter is not visible at the Presentation service interface defined in ITU-T Rec. X.216 |ISO/IEC 8822. This parameter i

21、s intended for use at the Presentation/Session boundary.Add the following row in Table 10, after SS-user data:10) Subclause 14.1.1Change the first sentence as shown by the underlined text:The orderly-release service is always provided and allows either SS-user to release the session connection in an

22、 orderlymanner unless the no-orderly-release functional unit is selected on the session connection.PrimitiveParameterRequest Indication Response ConfirmUser Summary U C(=)UC(=)Special user-data U C(=)UC(=)PrimitiveParameterRequest IndicationSpecial user-data UC(=)ISO/IEC 8326 : 1996/Amd.1 : 1998 (E)

23、ITU-T Rec. X.215 (1995)/Amd.1 (1997 E) 311) Subclause A.5.1Add the following shown underlined to the definition of fu-dom:fu-dom = FD, HD, EXCEP, TD, NR, SY, SS, DS, MA, RESYN, EX, ACT, CD, NORAdd the following definition of NOR to the list of abbreviations, by alphabetical order:NOR No orderly rele

24、ase functional unit12) Subclause A.5.4.14Add a new row at the end of Table A.7 as shown below:Change Tables A.15 (Connection release state table without the symmetric synchronize functional unit) and A.23(Connection release state table with the symmetric synchronize functional unit) in the identifie

25、d rows according to theunderlined changes shown below:rdrtp188 FU(NOR)StateEventSTA03awaitSRELcnfSTA09awaitSRELrspSTA713datatransferAnyotherstateSRELind 18STA09p188STA09SRELreq p6518STA09p188 & p6318STA03ISO/IEC 8326:1996/Amd.1:1998(E)ISO/IECICS 35.100.50Descriptors: data processing, information interchange, network interconnection, open systems interconnection, data transmission,communication procedure, session layer.