CAN CSA-ISO IEC 8326B-2002 Information technology - Open Systems Interconnection - Session service definition AMENDMENT 2 Nested connections functional unit.pdf

1、 Amendment 2:2002 toNational Standard of CanadaCAN/CSA-ISO/IEC 8326:02Amendment 2:1998 to International Standard ISO/IEC 8326:1996 has been adopted without modification asAmendment 2:2002 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.2:1998(E)B CReference numberISO/IEC 8326:1996/Amd.2:1998(E)INTERNATIONALSTANDARDISO/IEC8326Second edition1996-09-15AME

3、NDMENT 21998-12-15Information technology Open SystemsInterconnection Session servicedefinitionAMENDMENT 2: Nested connectionsfunctional unitTechnologies de linformation Interconnexion de systmes ouverts(OSI) Dfinition du service de sessionAMENDEMENT 2: Unit fonctionnelle de connexions nicheISO/IEC 8

4、326:1996/Amd.2:1998(E) 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 Copyrigh

5、t Office Case postale 56 CH-1211 Genve 20 Switzerlandii ISO/IECISO/IEC 8326:1996/Amd.2:1998(E)iiiForewordISO (the International Organization for Standardization) and IEC (the Inter-national Electrotechnical Commission) form the specialized system for worldwidestandardization. National bodies that ar

6、e members of 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 o

7、rganizations, 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

8、 to national bodies for voting. Publicationas an International Standard requires approval by at least 75 % of the nationalbodies casting a vote.Amendment 2 to ISO/IEC 8326:1996 was prepared by ITU-T (as ITU-TRec. X.215/Amd.2) and was adopted, under a special “fast-track procedure”, byJoint Technical

9、 Committee ISO/IEC JTC 1, Information technology, in parallelwith its approval by national bodies of ISO and IEC. The identical text ispublished as ITU-T Rec. X.215/Amd.2.)3/ )%#G0 G0 G0 !MD G0 G0 G0 %G9)45G134G02EC G08 G0 G9 !MD G0 G0 G0%G9 1).4%2.!4)/.!,G0G034!.$!2$ISO/IEC 8326 : 1996/Amd.2 : 1998

10、 (E)ITU-T Rec. X.215 (1995)/Amd. 2 (1997 E)45G134G0G02%#/-%.$!4)/.).c) disrupted service (this only occurs on a nested connection);G9 3UBCLAUSEG0 !DDG0ATG0THEG0ENDG0OFG0THEG0SENTENCEG0ING0THISG0SUBCLAUSE . except that services on a nested session connection can only be invoked if all enclosing conne

11、ctions permit theinvocation of the data transfer service.G9 3UBCLAUSEG0! !DDG0ATG0THEG0ENDG0OFG0THISG0SUBCLAUSE A request or response primitive on a nestedG0 session connection (including an S-CONNECT request or responseestablishing such a connection) can occur only if the following apply:a) it is p

12、ermitted by the state table for that connection; andb) the state table for all enclosing connections permit an SDTreq event.An indication or confirm primitive on a nested connection (including an S-CONNECT indication or confirm establishingsuch a connection) will occur only if the following apply:a) it is permitted by the state table for that connection; andb) the state table for all enclosing connections permit an SDTind event.ISO/IEC 8326:1996/Amd.2:1998(E)ISO/IECICS 35.100.50