ITU-T M 721-1988 SYSTEM AVAILABILITY INFORMATION POINT《系统可用性信息点》.pdf
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1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 - TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU-!).4%.!.#% ).4%2.!4)/.!,G0G04%,%0(/.%G0G0#)2#5)433934%-G0G0!6!),!“),)49G0G0).&/2-!4)/.0/).4)45G134G0G0RecommendationG0G0- (Extract from the “LUEG0“OOK)NOTES1 ITU-T Recommendation M.721 was published in Fasci
2、cle IV.1 of the Blue Book. This file is an extract fromthe Blue 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).2 In this R
3、ecommendation, 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, electronic ormechanic
4、al, including photocopying and microfilm, without permission in writing from the ITU.Fascicle IV.1 - Rec. M.721 1Recommendation M.721Fascicle IV.1 - Rec. M.721SYSTEM AVAILABILITY INFORMATION POINT1 Definition of system availability information pointThe system availability information point is an ele
5、ment within the general maintenance organization for theinternational automatic and semi-automatic telephone service associated with one or more international centres. Itcollects and disseminates information concerning the non-availability of telecommunications systems which affects theinternational
6、 service. The term availability is used here in the broadest sense of the word.2 Responsibilities and functionsThe system availability information point is responsible for the following set of functions:2.1 Collecting information concerning major breakdowns, planned outages, or other special circums
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