1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 - TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU-!).4%.!.#% G0G0).42/$5#4)/.!.$G0G0%.%2!,G0G002).#)0,%3-!).4%.!.#%G0G0#/.3)$%2!4)/.3&/2G0G0.%7G0G03934%-3)45G134G0G0RecommendationG0G0- (Extract from the “LUEG0“OOK)NOTES1 ITU-T Recommendation M.15 was publis
2、hed in Fascicle IV.1 of the Blue Book. This file is an extract from theBlue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, thecontents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below)
3、.2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both atelecommunication administration and a recognized operating agency. ITU 1988, 1993All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electroni
4、c ormechanical, including photocopying and microfilm, without permission in writing from the ITU.Fascicle IV.1 - Rec. M.15 1Recommendation M.15Fascicle IV.1 - Rec. M.15MAINTENANCE CONSIDERATIONS FOR NEW SYSTEMS1 GeneralTo ensure that new systems are implemented so as to permit compatible internation
5、al operation andmaintenance in the most effective manner, the following guiding principles are indicated.2 Principles2.1 When a new system is being studied, early consideration should be given to operational and maintenancerequirements.2.2 The maintenance organization and maintenance facilities (inc
6、luding test equipment) should be considered earlyenough to ensure their availability when the new system is introduced.2.3 In order to reduce total (lifetime) costs and to improve the efficiency of maintenance, new systems should beprovided with internal supervision and fault localization functions.
7、 Such functions reduce the number and type ofexternal test equipment to a minimum, and make it possible to omit most external routine tests.2.4 Where existing maintenance procedures, for example fault reporting, are not appropriate, alternative proceduresshould be considered early enough to ensure their application when the new system is introduced. However, any newprocedures should consider established maintenance principles accepted by the CCITT.
