1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU X.722 Corrigendum I (1 0/96) SERIES X: DATA NETWORKS AND OPEN SYSTEM COMMUNICATION OS1 management Information technology - Open Systems Interconnection - Structure of management information: Guidelines for th
2、e definition of managed objects Technical Corrigendum I ITU-T Recommendation X.722 - Corrigendum 1 (Previously “CCITT Recommendation”) STD-ITU-T RECMN X.722 CORR.1-ENGL L99b m qBb2591 Ob23114 390 _ _ - ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATION DATA TRANSMISSION X.1-X
3、.199 Services and facilities X.1-X.19 Interfaces X.20-X.49 Transmission. signalling and switching X.50-X.89 Network aspects X.90-X.149 Maintenance X.150-X.179 Administrative arrangements X.180-X.199 OPEN SYSTEM INTERCONNECTION X.200-X.299 Model and notation X.200-X.209 Service definitions X.210-X.21
4、9 Connection-mode protocol specifications X.220-X.229 Connectionless-mode protocol specification X.230-X.239 PICS proformas X.240-X.259 Protocol Identification X.260-X.269 Security Protocols X.270-X.279 Layer Managed Objects X.280-X.289 Conformance testing X.290-X.299 INTERWORKING BETWEEN NETWORKS X
5、.300-X.399 General X.300-X.349 Satellite data transmission networks Management MESSAGE HANDLING SYSTEMS THE DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS Networking X.350-X.369 X.370-X.399 X.400-X.499 x.500-x.599 X.600-X.699 X.610-X.649 Naming, Addressing and Registration X.650-X.679 Abstract Syntax N
6、otation One (ASN.l) X.680-X.699 SECURITY OS1 APPLICATIONS Commitment, Concurrency and Recovery Transaction processing 1 Remote operations X.800-X. 849 X.850-X.899 X.850-X.859 X.860-X.879 X. 8 80-X. 899 OPEN DISTRIBUTED PROCESSING x.900-x.999 For further details, please refer to ITU-TList of Recommen
7、dations. STD-ITU-T RECMN X-722 CORR-1-ENGL 199b m LiBb259L Ob23L15 227 m _- - FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The IT Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. Som
8、e 179 member countries, 84 telecom operating entities, 145 scientific and industrial organizations and 38 international organizations participate in -T which is the body which sets world telecommunications standards (Recommendations). The approval of Recommendations by the Members of IT-T is covered
9、 by the procedure laid down in WTSC Resolution No. 1 (Helsinki, 1993). In addition, the World Telecommunication Standardization Conference (WTSC), which meets every four years, approves Recommendations submitted to it and establishes the study programme for the following period. In some areas of inf
10、ormation technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. The text of IT-T Recommendation X.722, Comgendum 1 was approved on 5th of October 1996. The identical text is also published as ISO/IEC International Standard 10165-4
11、. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Q IT 1996 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electron
12、ic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. ITU-T Rec. X.722 (1992)/Cor.l(1996 E) 1 STD-ITU-T RECMN X.722 CORR-1-ENGL l77b I- qBb259L Llb23lLb lb3 CONTENTS Page 1) Subclause 6.4.5 . 1 2) Subclause 7.4 1 3) Subclause 8.3.3.1 1 4) Subclause 8.3.3
13、.3 2 5) Subclause 8.5.1.1.1 . 2 6) Index . 2 ii ITU-T Rec. X.722 (1992)/Cor.l(1996 E) Summary This technical corrigendum corrects an ambiguity that can cause an operations systems (OS) implementor to develop software that will not work correctly with another vendors OS product. ITU-T Rec. X.722 (199
14、2)/Cor.l(1996 E) . 111 STD.1Ti.l-T RCMN X-722 CORR-1-ENGL 177b i.IBb2591 Ob231LA T3b M ISO/IEC 10165-4 : 1992Kor.l : 1996 (E) INTERNATIONAL STANDARD RU-T RECOMMENDATION INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - STRUCTURE OF MANAGEMENT INFORMATION: GUIDELINES FOR THE DEFINITION OF MANAG
15、ED OBJECTS TECHNICAL CORRIGENDUM 1 1) Subclause 6.4.5 Add the following at the end of the currentparagraph: “A managed object identifies its actual class (see 7.4.3) by the value of its managed object class attribute.” 2) Subclause 7.4 Add the following immediate supports only operations that are de
16、fined in its actual class definition for packages that are present; and emits only notifications when a behaviour defined to trigger that notification in the actual class definition applies for packages that are present. - - - The absence of a GDMO construct for a characteristic in a managed object
17、class definition specifically excludes that characteristic from that class definition. A subclass may add an excluded construct by explicit definition. Each subclass has its own registered object identifier value. For example, if REPLACE is not specified for a single-valued attribute, that attribute
18、 in instances of that class shall be regarded as read only; a subclass definition may extend this by adding the REPLACE construct to specify that the attribute can be replaced for instances of the subclass and instances that are compatible with the subclass.” 3) Subclause 8.3.3.1 Add the following t
19、o 8.3.3.1 a) before “NOTE 2”: When behaviour is extended the stated or implied pre-conditions may only be weakened (the required pre-conditions shall remain the same or become fewer), the stated or implied post-conditions may only be strengthened (the same post- conditions shall be satisfied and add
20、itional post-conditions may be satisfied), and the stated or implied invariants remain unchanged but more invariants may be added. (Refer to 5.2.2.6 of CCITT Rec. X.720 I ISO/IEC 10165-1 of the Management Information Model.)” ITU-T Rec. X.722 (1992)/Cor.l(1996 E) 1 STD-ITU-T RECMN X.722 CORR.l-ENGL
21、Lqb = 48b2571 Ob23L17 972 = ISO/iEC 10165-4 : 1992Kor.l : 1996 (E) 4) Subclause 8.3.3.3 Add the following to the end ofthis subclause, as a new paragraph: “Where there are specific conditions that preclude instantiation of a conditional package, these should be specified in a BEHAVIOUR template. The
22、 BEHAVIOUR template used for this may be in the conditional package itself or in a mandatory package of the class. If such specifications are present in textual behaviour definitions, it is recommended that the paragraph containing the specification be introduced with “ PRESENT ONLY IF:” as a textua
23、l convention.” 5) Subclause 8.5.1.1.1 In 8.5. I. 1. I replace “9.5.3” with “8.5.3.1”. 6) Index Change these index entries: “BEHAVIOUR 25-26,30-32,34-35,37-40 REPLACE 14,26-27 2 ITU-T Rec. X.722 (1992)/Cor.l(1996 E) STD-ITU-T RECMN X.722 CORR-1-ENGL 177b 48b2571 Ob2IL20 b74 = Series A Series B Series
24、 C Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the IT-T Means of expression General telecommunicat
25、ion statistics General tariff principles Telephone network and ISDN Non-telephone telecommunication services Transmission systems and media Transmission of non-telephone signals Integrated services digital network Transmission of sound-programme and television signals Protection against interference
26、 Construction, installation and protection of cables and other elements of outside plant Maintenance: intemational transmission systems, telephone circuits, telegraphy, facsimile and leased circuits Maintenance: international sound-programme and television transmission circuits Specifications of mea
27、suring equipment Telephone transmission quality Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminal equipments and protocols for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communication Programming languages Printed in Switzerland Geneva, 1996
