1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 - TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU-!).4%.!.#% ).4%2.!4)/.!,G0G04%,%0(/.%G0G0#)2#5)432%34/2!4)/.G0G0#/.42/,G0G00/).4)45G134G0G0RecommendationG0G0- (Extract from the “LUEG0“OOK)NOTES1 ITU-T Recommendation M.725 was published in Fascicle IV.1 of
2、 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 Recommendati
3、on, 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 ormechanical, includi
4、ng photocopying and microfilm, without permission in writing from the ITU.Fascicle IV.1 - Rec. M.725 1Recommendation M.725Fascicle IV.1 - Rec. M.725RESTORATION CONTROL POINT1 Definition of restoration control point (RCP)The restoration control point (RCP) is an element within the general maintenance
5、 organization for theinternational telecommunication services. It initiates and coordinates service restoration activities in case of failures orplanned outages of transmission systems in accordance with plans and ad hoc arrangements agreed by the technicalservices of the Administrations concerned.S
6、ince two or more RCPs are involved in agreed restoration plans, it is practical to nominate one RCP as theOverall RCP which then initiates and controls implementation of the plan. The additional responsibilities and functionsof an Overall RCP are given in 3 below.2 Responsibilities and functionsThe
7、restoration control point (RCP) is responsible for the following set of functions:2.1 Initiating the implementation of a restoration plan and ad hoc arrangements with the other stations involvedwithin its Administrations boundaries.2.2 Monitoring the implementation of the restoration plan.2.3 Coordi
8、nating the restoration activities of the repeater stations and other stations involved within itsAdministrations boundaries.2.4 Liaising with restoration control points of other Administrations as necessary and agreeing the times of eventswith them.2.5 Exchanging information with the network managem
9、ent (implementation and control point) (seeRecommendation E.413 1) for coordination purposes as appropriate.2.6 Monitoring and coordinating the return to normal service conditions after the fault has been cleared or theplanned work has been finished.2.7 Keeping, throughout the period during which th
10、e restoration and the return to normal conditions is executed,an accurate log of events, including any circuit, channel, group, supergroup, etc., or baseband patching which takesplace.2.8 Requesting and receiving reports from other RCPs and disseminating this information within its ownAdministration
11、 as required.2.9 Reporting the events to the responsible authorities of its Administration as desired and advising the systemavailability information point about the progress of restoration.2.10 Sending a final restoration report, after the return to normal, containing all relevant data (including a
12、greedtimes) for accounting purposes to the responsible authorities within its Administration.2.11 If no restoration plan exists or, for some reason, an existing plan cannot be implemented, advising theresponsible authorities in its own Administration and suggesting suitable ad hoc arrangements in th
13、e light of theinformation available.3 Additional responsibilities of an overall RCPThe responsibilities of an overall RCP are much the same as an ordinary RCP but with additionalresponsibilities as follows:3.1 Initiating the implementation of a restoration plan with other RCPs concerned.3.2 Requesti
14、ng and receiving reports from other RCPs and disseminating this information as necessary.3.3 Coordinating and controlling all restoration activities including the return to normal conditions.2 Fascicle IV.1 - Rec. M.7254 FacilitiesThe restoration control point should be provided with the following f
15、acilities:4.1 Appropriate communication facilities in order to assume its responsibilities.4.2 Access to information appropriate to its functions and this includes:a) status of relevant international transmission systems;b) current restoration plans;c) list of the sections of border-crossing transmi
16、ssion traffic routes;d) routing information for international group, supergroup, etc., links;e) inventory of spare transmission facilities, in its own and neighbouring countries, lending themselves torestoration.Reference1 CCITT Recommendation International network management - Planning, Vol. II, Rec. E.413.
