1、 National Standard of CanadaCAN/CSA-ISO/IEC 8326:02(ISO/IEC 8326:1996)International Standard ISO/IEC 8326:1996 (second edition, 1996-09-15), has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO/IEC 8326:02, which has been approved as a NationalStandard of Canada by the Standards Co
2、uncil of Canada.ISBN 1-55324-406-0 February 2002Reference numberISO/IEC 8326:1996(E)The Canadian Standards Association (CSA), The Standards Council of Canada is theunder whose auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919
3、 and accredited by a federation of independent, autonomousthe Standards Council of Canada to the National organizations working towards the furtherStandards system in 1973. It is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization
4、in the national interest.engaged in standards development and certification The principal objects of the Council are to foster activities. and promote voluntary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and use
5、rs including manufacturers, health, safety, and welfare of the public, assisting consumers, retailers, unions and professional and protecting the consumer, facilitating domestic organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used wide
6、ly by industry and commerce cooperation in the field of standards.and often adopted by municipal, provincial, and A National Standard of Canada is a standard whichfederal governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, buil
7、ding and construction, Canada and one which reflects a reasonableand the environment. agreement among the views of a number of capableIndividuals, companies, and associations across individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practic
8、able extent a balance ofdevelopment by volunteering their time and skills to representation of producers, users, consumers, andCSA Committee work and supporting the Associations others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in
9、 hand. It normally is a standardthan 7000 committee volunteers and the 2000 which is capable of making a significant and timelysustaining memberships together form CSAs total contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National St
10、andard ofSustaining memberships represent a major source of Canada indicates that a standard conforms to theincome for CSAs standards development activities. criteria and procedures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refe
11、r to theservices in support of and as an extension to its technical content of the standard; this remains thestandards development activities. To ensure the continuing responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly
12、 and continually audits and inspects products Those who have a need to apply standards arethat bear the CSA Mark. encouraged to use National Standards of CanadaIn addition to its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch
13、offices in major to periodic review; therefore, users are cautioned centres across Canada and inspection and testing to obtain the latest edition from the organizationagencies in eight countries. Since 1919, the preparing the standard.Association has developed the necessary expertise to The responsi
14、bility for approving National Standards meet its corporate mission: CSA is an independent of Canada rests with theservice organization whose mission is to provide an Standards Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and
15、services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to meet Canadanational and international needs.For further information on CSA services, write toCanadian Standards Association178 Rexdale BoulevardToronto, Ontario, M9W 1R3CanadaLes normes nationales du
16、 Canada sont publies en versions franaise et anglaise.Although the intended primary application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Stan
17、dards AssociationInformation technology Open SystemsCAN/CSA-ISO/IEC 8326:02 Interconnection Session service definitionFebruary 2002 Canadian Standards Association CSA/1CAN/CSA-ISO/IEC 8326:02Information technology OpenSystems Interconnection Sessionservice definitionCSA PrefaceStandards development
18、within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1)
19、 for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecommunication Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).Thi
20、s International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. (Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish
21、addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update orcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythese Committees a
22、nd has been approved as a National Standard of Canada by the Standards Council ofCanada.February 2002 Canadian Standards Association 2002All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprint
23、ed with permission. Where the words “this International Standard” appear in thetext, they should be interpreted as “this National Standard of Canada”. Inquiries regarding this National Standard of Canada should be addressed to Canadian Standards Association 178 Rexdale Boulevard, Toronto, Ontario, C
24、anada M9W 1R31-800-463-6727 416-747-4044www.csa.caICS 35.100.50 Ref. No. ISO/IEC 8326:1996/Cor.1:2002(E) ISO/IEC 2002 All rights reserved Information technology Open Systems Interconnection Session service definition TECHNICAL CORRIGENDUM 1 Technologies de linformation Interconnexion de systmes ouve
25、rts (OSI) Dfinition du service de session RECTIFICATIF TECHNIQUE 1 Technical Corrigendum 1 to International Standard ISO/IEC 8326:1996 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology. Technical Corrigendum 1:2003 toNational Standard of CanadaCAN/CSA-ISO/IEC 8326:02Tec
26、hnical Corrigendum 1:2002 to International Standard ISO/IEC 8326:1996 has been adopted withoutmodification as Technical Corrigendum 1:2003 to CAN/CSA-ISO/IEC 8326:02. This Technical Corrigendum wasreviewed by the CSA Technical Committee on Information Technology (TCIT) under the jurisdiction of the
27、StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada. July 2003ISO/IEC 8326 : 1996/Cor.1 : 2002 (E)ITU-T X.215 (1995)/Cor.1 (03/2000 E) 1INTERNATIONAL STANDARDISO/IEC 8326-3 : 1996/Cor.1 : 2001 (E)ITU-T RECOMMENDATIONINFORMATION TECHNOLOGY OPEN SYSTEMS INTERC
28、ONNECTION SESSION SERVICE DEFINITIONTECHNICAL CORRIGENDUM 11) Subclause 3.3.9In the second line, replace “S CONNECT“ by “S-CONNECT“.2) Subclause 6.1a) In the beginning of the last sentence of the first paragraph, replace “to“ by “is“, to make the sentence begin“Information is passed “.b) In items a)
29、 and b), replace “clause“ by “section“.INTERNATIONAL STANDARD lSO/IEC 8326 Second edition 1996-09-I 5 Information technology - Open Systems Interconnection - Session service definition Technologies de Iinforma tion - In terconnexion de s ys t the parameter data associated with each primitive action
30、and event; the relationship between, and the valid sequence of these actions and events. The service defined in this Recommendation I International Standard is that which is provided by the OS1 session protocol (in conjunction with the transport service) and which may be used by the OS1 presentation
31、 protocol. , This Recommendation I International Standard does not specify individual implementations or products, nor does it constrain the implementation of entities and interfaces within a computer system. There is, therefore, no conformance to this Recommendation I International Standard. The te
32、xt pertaining to the symmetric synchronization functional unit is not applicable to the support of ITU-T applications. 2 Normative references The following Recommendations and International Standards contain provisions which, through reference in this text, constitute provisions of this Recommendati
33、on I International Standard. At the time of publication, the editions indicated were valid. All Recommendations and International Standards are subject to revision, and parties to agreements based on this Recommendation I International Standard are encouraged to investigate the possibility of applyi
34、ng the most recent edition of the Recommendations and International Standards listed below. Members of IS0 and IEC maintain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently valid ITU-T Recommendations. 21 . Id
35、entical Recommendations I International Standards - ITU-T Recommendation X.200 (1994) I ISO/IEC 749% 1: 1994, Information technology - Open Systems Interconnection - Basic Reference Model: The Basic Model. - ITU-T Recommendation X.210 (1993) I ISO/IEC 10731:1994, Information technology - Open System
36、s Interconnection - Basic Reference Model: Conventions for the definition of OSI services. - ITU-T Recommendation X.214 (1993) I ISO/IEC 8072:1994, Information technology - Open Systems Interconnection - Transport service definition. - ITU-T Recommendation X.225 (1995) I ISO/IEC 8327-l : 1996, Infor
37、mation technology - Open Systems Interconnection - Connection-oriented Session protocol: Protocol specification. ITU-T Rec. X.215 (1995 E) 1 ISO/IEC 8326 : 1996 (E) - ITU-T Recommendation X.226 (1994) I ISO/IEC 8823-l : 1994, Information technology - Open Systems Interconnection - Connection-oriente
38、d presentation protocol: ProtocoZ specification. - ITU-T Recommendation X.235 (1995) I ISO/IEC 9548-l: 1995, Information technology - Open Systems Interconnection - Connectionless Session protocol: Protocol specification. 22 . Paired Recommendations I International Standards equivalent in technical
39、content - CCITT Recommendation X.650 (1992), Open Systems Interconnection (OSZ - Reference Model for naming and addressing. IS0 7498-3: 1989, Znfomzation processing systems - Open Systems Interconnection - Basic Reference Model - Part 3: Naming and addressing. 3 Definitions For the purposes of this
40、Recommendation I International Standard, the following definitions apply. NOTE - The definitions contained in this clause make use of abbreviations defined in clause 4. 31 . Reference Model definitions This Recommendation I International Standard is based on the concepts developed in ITU-T Rec. X.20
41、0 I ISO/IEC 7498-1, and makes use of the following terms defined in it: a) expedited-session-service-data-unit; b) session connection; c) Session Layer; d) session service; e session-service-access-point; f session-service-data-unit; g) Transport Layer; l-0 duplex; 0 half-duplex. 32 . Service conven
42、tion definitions This Recommendation I International Standard also makes use of the following terms defined in ITU-T Rec. X.210 I ISO/IEC 1073 1, as they apply to the Session Layer: a b) Cl service-user; service-provider; primitive; d) request; e indication; f response; g) confirm. 33 . Session serv
43、ice definitions 3.3.1 calling SS-user: An SS-user that initiates a session connection establishment request. 3.3.2 called SS-user: An SS-user with whom a calling SS-user wishes to establish a session connection. NOTE - Calling SS-users and called SS-users are defined with respect to a single connect
44、ion. An SS-user can be both a calling and called SS-user simultaneously. 2 ITU-T Rec. X.215 (1995 E) ISO/IEC 8326 : 1996 (E) 3.3.3 sending SS-user: An SS-user that acts as either a source of data during the data transfer phase of a session connection or a source of data during a particular instance
45、of session-connectionless-mode transmission. 3.3.4 receiving SS-user: An SS-user that acts as either a sink of data during the data transfer connection or a sink of data during a particular instance of sessi on-connectionless-mode transmission. 3.3.5 3.3.6 3.3.7 token: An attribute certain services
46、to be invoked NOTE - An SS-user can be both sending and a receiving SS-user simultanedusly. requestor; requesting SS-user: An SS-user that initiates a particular action. acceptor; accepting SS-user: An SS-user that accepts a particular action. phase of a session of a session connection which is dyna
47、mically assigned to one SS-user at a time to permit 3.3.8 conditional (parameter): A parameter whose presence in a request or response depends on conditions defined in the text of this Recommendation. I International Sitandard; and whose presence in an indication or confirm is mandatory if Thai para
48、meter was present in the pre,ceding, session service primitive, or absent if that parameter was absent in the preceding: session service primitive. 3.3.9 proposed parameter: The value for a parameter proposed by an SS-user in an S-CONNECT request or an S CONNECT response that it wishes to use on the
49、 session connection. 33.m x3.11 sehxted parameter: The value for a parameter that has been chosen for use on the session connection. session-connectionless-mode transmission; session-connectionless transmission: The, transmission of a unit of data in a single self-contained session service without establishing a session connection (as defined in ITU-T Rec. X.200 I ISO/IEC 7498-l). 4 Abbreviations For the purposes of this Recommendation I International S,tandara. the following abbrevi where indicated in this Recommendation I International Stand
