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1、Reference number ISO/IEC ISP 11186-3:2000(E) ISO/IEC 2000 INTERNATIONAL STANDARDIZED PROFILE ISO/IEC ISP 11186-3 First edition 2000-02-15 Information technology International Standardized Profiles FVT3nn Virtual Terminal Basic Class Register of attribute assignment type definitions Part 3: FVT312 Re
2、pertoire Assignment Type for ISO/IEC 2022 Level 2 Technologies de linformation Profils normaliss internationaux FVT3nn Classe de base du terminal virtuel Registre de dfinitions de type dallocation dattribut Partie 3: FVT312 Type daffectation de rpertoire pour le niveau 2 de lISO/CEI 2022 Copyright I
3、nternational Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 11186-3:2000(E) PDF disclaimer This PDF file may contain embedd
4、ed typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of no
5、t infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters we
6、re optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2000 All rights reserved. Unless otherwise sp
7、ecified, 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 either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office
8、 Case postale 56 ? CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO/IEC 2000 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/998075
9、5100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 11186-3:2000(E) ISO/IEC 2000 All rights reservediii ContentsPage Foreword.iv Introduction.v 1Scope 1 1.1General1 1.2Position within the taxonomy.2 1.3Scenario3 2Normative re
10、ferences4 3Terms and definitions .5 3.1General OSI terminology.5 3.2Terminology of VT base standards6 3.3Terminology of coded character set standards .6 4Abbreviations.7 5Principles of conformance to VT Profiles .7 6Entry number8 7Name of sponsoring authority8 8Date .8 9Identifier8 10Descriptor valu
11、e.9 11Character-repertoire designation.9 11.1Principles of designation9 11.2Character-box graphic elements10 11.3Primary attribute values11 12VT abstract syntax.11 Annex A (informative) The different interpretations of repertoire in character set standards13 Annex B (informative) ASN.1 Character Str
12、ing Types.15 Annex C (informative) Illustrative examples.18 Bibliography22 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or networking permitted without license from
13、 IHS -,-,- ISO/IEC ISP 11186-3:2000(E) iv ISO/IEC 2000 All rights reserved Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or I
14、EC participate in the development of International Standards through technical 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, gov
15、ernmental 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. In addition to developing International Standards, ISO/IEC JTC 1 has created a Special Group on Fu
16、nctional Standardization for the elaboration of International Standardized Profiles. An International Standardized Profile is an internationally agreed, harmonized document which identifies a standard or group of standards, together with options and parameters, necessary to accomplish a function or
17、a set of functions. Draft International Standardized Profiles are circulated to national bodies for voting. Publication as an International Standardized Profile requires approval by at least 75 % of the national bodies casting a vote. International Standardized Profile ISO/IEC ISP 11186-3 was prepar
18、ed with the collaboration of ?Asia-Oceania Workshop (AOW); ?European Workshop for Open Systems (EWOS); ?Open Systems Environment Implementors Workshop (OIW). Attention is drawn to the possibility that some of the elements of this part of ISO/IEC ISP 11186 may be the subject of patent rights. ISO and
19、 IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC ISP 11186 consists of the following parts, under the general titleInformation technology International Standardized Profiles FVT3nn Virtual Terminal Basic Class Register of attribute assignment type definitions
20、: ?Part 1: FVT321 Font Assignment Type No. 1 ?Part 2: FVT311 Repertoire Assignment Type for ISO/IEC 10646 ?Part 3: FVT312 Repertoire Assignment Type for ISO/IEC 2022 Level 2 ?Part 4: FVT322 Font Assignment Type No.2 Annexes A, B and C of this part of ISO/IEC 11186 are for information only. Copyright
21、 International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 11186-3:2000(E) ISO/IEC 2000 All rights reservedv Introductio
22、n ISO/IEC ISP 11186 is defined within the context of Functional Standardization, in accordance with the principles specified in ISO/IEC TR 10000, “Framework and Taxonomy of International Standardized Profiles”. The context of Functional Standardization is one part of the overall field of Information
23、 Technology (IT) standardization activities, covering base standards, profiles and registration mechanisms. The Open Systems Interconnection (OSI) Standard ISO/IEC 9040 for the Virtual Terminal Basic Class Service provides for the identification of attribute assignment types by means of ASN.1 object
24、 identifiers. This International Standardized Profile provides a means for the registration of such attribute assignment type definitions in accordance with ISO/IEC 9834-1. The individual entries in this register constitute Interchange Format and Representation Profiles (F-Profiles) within the frame
25、work of ISO/IEC TR 10000. This part of ISO/IEC ISP 11186 was developed by the European Workshop for Open Systems (EWOS) in close cooperation with the other two Regional OSI Workshops, namely the OSE Implementors Workshop (OIW) of the United States and the OSI Asia-Oceania Workshop (AOW). The text is
26、 harmonized between these three Workshops and it has been ratified by the plenary assemblies of each Workshop. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or netwo
27、rking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STA
28、NDARDIZED PROFILEISO/IEC ISP 11186-3:2000(E) ISO/IEC 2000 All rights reserved1 Information technology International Standardized Profiles FVT3nn Virtual Terminal Basic Class Register of attribute assignment type definitions Part 3: FVT312 Repertoire Assignment Type for ISO/IEC 2022 Level 2 1Scope 1.
29、1General The concept of Profiles for OSI, and the structure of the International Standardized Profiles that document them, are defined in ISO/IEC TR 10000-1. Such Profiles are divided into a number of different classes and sub-classes. Two of these classes contain sub-classes comprising functions of
30、 the Virtual Terminal Basic Class Service and Protocol specified in the base standards ISO/IEC 9040 and ISO/IEC 9041. These are the Application Profiles (A-Profiles) and the Interchange Format and Representation Profiles (F-Profiles). The relationship between A-Profiles and F-Profiles is described i
31、n 7.3.2 of ISO/IEC TR 10000-1 and is as follows. Application Layer base standards require, implicitly or explicitly, the structure of information carried or referenced by them to be specified for each instance of communication. It is the purpose of F-Profiles to specify such information structures.
32、Particular functional requirements may then be met by the combination of an A-Profile with one or more F-Profiles. Establishment of a VT-association involves the selection by negotiation of a particular Virtual Terminal Environment profile (VTE-profile), and of particular values for any arguments of
33、 that VTE-profile. The VTE-profile specification, and possibly also the values of certain VTE-profile arguments, may in turn reference the definitions of VT control object types and attribute assignment types. These VTE-profiles, control object types and attribute assignment types are therefore Info
34、rmation Objects that require explicit reference within the VT protocol. Particular instances of these Information Objects are fully defined within the base standards, but the base standards also provide for further instances to be defined by registration. Each registered instance constitutes an F-Pr
35、ofile within the framework of ISO/IEC TR 10000. The Virtual Terminal Basic Class Service and Protocol may be used to realise a wide range of distinct functions. Particular functions may be realised through the selection of appropriate VT functional units, F-Profiles and other VTE-profile argument va
36、lues. The specification of the selection required to realise a particular function and to promote interoperability constitutes a Virtual Terminal A-Profile within the framework of ISO/IEC TR 10000. The three International Registers of VT information objects and the specifications of VT Application P
37、rofiles are each published as a separate multi-part ISP as follows: ?ISO/IEC ISP 11184 is the Register of VTE-profiles; ?ISO/IEC ISP 11185 is the Register of control object type definitions; ?ISO/IEC ISP 11186 is the Register of attribute assignment type definitions; ?ISO/IEC ISP 11187 contains the
38、specifications of VT Application Profiles. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:32:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC ISP 11186-3:2
39、000(E) 2 ISO/IEC 2000 All rights reserved This part of ISO/IEC ISP 11186 contains the definition of a repertoire assignment type for which a repertoire assignment value identifies the use of a level 2 version of the 8-bit code structure of ISO/IEC 2022 (multiple pre- designated character sets, witho
40、ut locking shifts). Such a version of ISO/IEC 2022 provides access to G2 and G3 code elements, in addition to the G0 and G1 code elements that may be accessed by means of the default repertoire assignment type specified in ISO/IEC 9040. This repertoire assignment type also includes provision for res
41、triction of the repertoire of characters to a subset of those that can be represented by the selected version of ISO/IEC 2022. The restriction of the repertoire may be by means outside the scope of ISO/IEC 2022. In particular the repertoire may be specified according to ISO/IEC 10646-1 even though t
42、he coding for information interchange is according to a level 2 version of ISO/IEC 2022. This facility should assist interworking during migration of applications from ISO/IEC 2022 coding to ISO/IEC 10646-1 coding. NOTE 1The use of locking shifts within the code structure of ISO/IEC 2022 is not cons
43、istent with the concept of a character- repertoire as defined in ISO/IEC 9040. A character-repertoire of the Virtual Terminal Service consists of a set of objects, each of which can be represented (uniquely) by a primary attribute value. If locking shifts were used, the character-box graphic element
44、 represented by a particular primary attribute value could change within a single instance of communication. NOTE 2The only levels of implementation defined in 10.3 of ISO/IEC 2022 that do not make use of locking shifts are levels 1 and 2 of the 8-bit code structure and level 1 of the 7-bit code str
45、ucture. NOTE 3The use of a Level 1 version of either the 7-bit or the 8-bit code structure of ISO/IEC 2022 (elementary 7-bit and 8- bit codes) is already permitted by the default repertoire assignment type that is defined in ISO/IEC 9040 and which has the ASN.1 object identifier iso standard 9040 re
46、pertoire(2) iso2022(0) . The repertoire assignment type defined in this part of ISO/IEC ISP 11186 therefore provides for the use within the Virtual Terminal Service of the only other level of implementation of ISO/IEC 2022 that is consistent with the definition of that service. 1.2Position within th
47、e taxonomy The taxonomy of International Standardized Profiles for OSI is laid down in ISO/IEC TR 10000-2. Within the classification scheme of this taxonomy, the OSI Profiles specified in this International Standardized Profile are in the Virtual Terminal Registered Object sub-class of the class of
48、Interchange Format and Representation Profiles. A Profile within this subclass has a Profile identifier of the form FVTabc, whereabcis a structured numerical identifier that identifies the position of the Profile within each of the three levels of subdivision of the subclass. The values ofaandbare single digits butcis an integer that is not necessarily a single digit. In principle the ISO Virtual Terminal model allows for multiple classes of operation, although at the time of publication of this Interna