ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services

pdf标准 ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services

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ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services 第 1 页 ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services 第 2 页 ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services 第 3 页 ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services 第 4 页 ITU-T E.880-1988 关于设备、网路和业务性能的野外数据收集和估算 Field data collection and evaluation on the perfor-mance of equipment , networks and services 第 5 页
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国外分类,ITU,ITU-T(电信标准分局),itu,关于,设备,网路,业务,性能,野外,数据,收集,估算,field,data,collection,and,evaluation,on,the,perfor,mance,of,equipment,networks,and,services

INTERNATIONAL TELECOMMUNICATION UNION )45 4 % TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU 4%,%0(/.% .%47/2+ !.$ )3$. 15!,)49 /& 3%26)#% .%47/2+ -!.!'%-%.4 !.$ 42!&&)# %.').%%2).' &)%,$ $!4! #/,,%#4)/. !.$ %6!,5!4)/. /. 4(% 0%2&/2-!.#% /& %15)0-%.4 .%47/2+3 !.$ 3%26)#%3 )45 4 Recommendation % (Extract from the "LUE "OOK) NOTES 1 ITU-T Recommendation E.880 was published in Fascicle II.3 of the Blue Book. This file is an extract from the Blue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, the contents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below). 2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. © ITU 1988, 1993 All rights reserved. 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 ITU. Recommendation E.880 Fascicle II.3 - Rec. E.880 FIELD DATA COLLECTION AND EVALUATION ON THE PERFORMANCE OF EQUIPMENT, NETWORKS AND SERVICES 1 Introduction This Recommendation provides guidelines for the collection of field data relating to dependability. It covers general aspects with an overview of sources, measures and information that may be involved when collecting field data. It is anticipated that specific practical needs of operation, maintenance and planning staff, in applying these guidelines, will be dealt with in a handbook under preparation. The Recommendation emphasizes that meaningful data must include the data on successes (operation without failures) as well as data on failures and faults. In other words, this Recommendation is not intended to be only a failure reporting guideline. It is applicable, without any restriction, to different items ranging from components to systems and networks (including hardware, software and people). Terms and definitions used are in line with Recommendation E.800. 2 Scope It is the intention of this Recommendation to provide guidelines for setting up data collection and reporting schemes which can be applied either during monitoring of samples of items or on a more widespread basis on almost all items (of the same type) by large operational and maintenance organizations. It is considered that, if such guidelines are followed, accuracy and completeness of reporting are enforced and the quality of the monitored items and their parts can be improved on a medium- to long-term basis. Moreover, such an effort will facilitate the interchange of information between user and providers. No recommendations are made on how to organize maintenance support. It is nevertheless understood that some items are repaired on site, others only replaced on site and possibly repaired at centralized facilities. Field data may be obtained at each of those stages. In order to obtain maximum efficiency from the collection of data, it is suggested that the programmes of reporting, analysis and dissemination of results be closely co-ordinated. The items considered may either have been designed, manufactured, or installed and may be operated by the same organization or by different organizations. This Recommendation applies to all possible cases of provider-user relations. 3 The need for data collection Any data collection scheme must aim to provide the information required to enable the correct decisions to be taken in order to reach specified objectives; these objectives should be well defined and documented at the outset. Fascicle II.3 - Rec. E.880 1 The specific objectives of the field data collection and presentation are as follows: a) to provide for a survey of the actual performance level of the items monitored for information to management, operation and planning, maintenance support, training of personnel, etc.; b) to indicate a possible need for the improvement of: – items already installed and in operation, or – further items to be delivered; c) d) to improve future designs; e) to improve predictions (data bases and procedures); f) to inform the provider about the performance of items on a regular or on a single occasion basis; g) 4 to compare the specified or predicted characteristics of the item(s) with the actual field performance; to have a common reporting basis. Sources and means of data collection In the following, the various information sources are described and the methods for systematically collecting information are outlined. 4.1 Sources of data The following sources of data may generally be available: – – repair activities (on site, repair and/or complaint c

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