1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 X.731 #OR TELECOMMUNICATION (04/95)STANDARDIZATION SECTOROF ITU4%#(.)#!,G0G0#/22)%.$5-G0G0 $!4!G0G0#/-5.)#!4)/.G0G0.%47/2+3).&/2-!4)/.G0G04%#(./,/9G0G0/0%.G0G03934%-3G0G0).4%2#/%#4)/.G0G03934%-3G0G0-!.!%-%.4 34!4%G0G0-!.!%-%.4G0G0&5.#4)/.#)44G0Recommendat
2、ionG08 #OR G0 FOREWORDITU (International Telecommunication Union) is the United Nations Specialized Agency in the field oftelecommunications. The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanentorgan of the ITU. Some 166 member countries, 68 telecom operating e
3、ntities, 163 scientific and industrial organizationsand 39 international organizations participate in CCITT which is the body which sets world telecommunicationsstandards (Recommendations).The approval of Recommendations by the members of CCITT is covered by the procedure laid down in CCITTResolutio
4、n No. 2 (Melbourne, 1988). In addition, the Plenary Assembly of CCITT, which meets every four years,approves Recommendations submitted to it and establishes the study programme for the following period.”In some areas of information technology, which fall within CCITTs purview, the necessary standard
5、s are prepared on acollaborative basis with ISO and IEC. The text of CCITT Recommendation X.731 was approved on 17th January 1992.Technical Corrigendum 1 was approved on 10th of April 1995. The identical text is also published as ISO/IECInternational Standard 10164-2._NOTEIn this Recommendation, the
6、 expression “Administration” is used for conciseness to indicate both a telecommunicationadministration and a recognized private operating agency. ITU 1996All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic ormechanical, including ph
7、otocopying and microfilm, without permission in writing from the ITU.ITU-T Rec. X.731 (1992)/Cor.1 (1995 E) iSummaryThis Technical Corrigendum provides additional information to clarify the conditions in 8.1.2.3 and 8.1.2.5.ISO/IEC 10164-2 : 1993/Cor.1:1995(E)ITU-T Rec. X.731 (1992)/Cor.1 (1995 E) 1
8、INTERNATIONAL STANDARDISO/IEC 10164-2 : 1993/Cor.1:1995(E)ITU-T Rec. X.731 (1992)/Cor.1 (1995 E)ITU-T RECOMMENDATIONINFORMATION TECHNOLOGY OPEN SYSTEMS INTERCONNECTION SYSTEMS MANAGEMENT: STATE MANAGEMENT FUNCTIONTECHNICAL CORRIGENDUM 11) Apply the following changes to 8.1.2.3:For the “in test” item
9、, replace the second sentence with the following:“If the control status attribute is present and has the value reserved for test, then normal users are precludedfrom using the resource and the administrative state is locked.”For the “off line” item, replace the last sentence with the following:“The
10、operational state is enabled or disabled.”2) Apply the following change to 8.1.2.5:Replace Table 1 with the following:Table 1 Standby status conditionsStandby status Hot standby Cold standby Providing serviceoperational state enabled enabled or disableda)enabledadministrative state unlocked unlocked
11、 or locked unlockedprocedural statusb) not initialized orinitialization requiredAvailability status Required Value: off lineProhibited values: failed,power off, off duty,dependency, not installedRequired Value: off lineProhibited values: noneRequired Value: noneProhibited values: failed,power off, off line, off duty,dependency, not installeda)If the procedural status attributes are supported and the value is “initialization required”, the operational state is “disabled”.b)The symbol “” indicates that the value of the attribute is an empty set.
