ISO/IEC INTERNATIONAL STANDARD 9545 Second edition 1994-08-15 Information technology Open Systems Interconnection Application Layer structure Technologies deI'information -Interconnexion de systemes ouverts (Osi)-StructuredelacoucheApplication IEC rso Reference number ISO/IEC 9545:1994(E) Copyright Intemational Organization for Standardization Not for Resale ISO/IEC 9545:1994(E) Contents Page 1 Scope... 1 2 Normative references ... 1 2.1 Identical Recommendations I International Standards 1 2.2 Paired Recommendations I International Standards equivalent in technical content. 2 3 Definitions. 2 4 Abbreviations 4 5 Application Layer concepts ... 4 5.1 Introduction .... 4 5.2 Application-processes..... 5 5.3 Application-entities.. 5 5.4 Application-service-objects .. 6 5.5 Application-service-elements 7 5.6 Control functions ... 7 5.7 8 5.8 AsO..context........ 9 5.9 ASO naming ... 10 5.10 Application-associations... 1 5.11 Application-context .... 11 5.12 Names and directory functions .... 11 6 Operation of application-entity-invocations ... 12 6.1 Use of application-associations .... 12 6.2 Operation of ASO-invocations and ASE-invocations . 12 6.3 Interaction with the supporting service.... 12 6.4 Interaction with the Presentation Layer........... 13 6.5 13 7 Application Layer specifications... 13 7.1 Categories of specification.... 13 7.2 Relationships among specifications... 13 7.3 Properties of specifications... 14 8 Abstract syntax definition . 16 9 16 Annexes A Some aspects of combining ASEs and ASOs .. 17 B Relationship between application-contexts and application profiles .. 19 c Relationship of the terms of this edition and the previous edition of ISO/IEC 9545... 20 ?ISO/IEC1994 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office · Case postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland ii Copyright Intemational Organization for Standardization Ited without licel ense from IHS Not for Resale @ ISO/IEC ISO/IEC 9545:1994(E) Foreword ISO (the International Organization for Standardization) and IEC (the Inter- national Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards throughtechnical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international 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. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. International Standard ISO/IEC 9545 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, in collaboration with ITU-T. The identical text is published as ITU-T X.207. This second edition cancels and replaces the first edition (ISO/IEC 9545:1989), which has been technically revised. Annexes A, B and C of this International Standard are for information only ii Copyright Intemational Organization for Standardization I without license from IHS Not for Resale