1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 - TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU-!).4%.!.#% ).4%2.!4)/.!,G0G04%,%0(/.%G0G0#)2#5)43%8#(!.%G0G0/&G0G0).&/2-!4)/.G0G0/.G0G0).#/-).4%34G0G0&!#),)4)%3G0G0!4G0G0).4%2.!4)/.!,37)4#().G0G0#%.42%3)45G134G0G0RecommendationG0G0- (Extract from the “LUE
2、G0“OOK)NOTES1 ITU-T Recommendation M.734 was published in Fascicle 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 an
3、d copyright conditions remain unchanged (see below).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
4、 or utilized in any form or by any means, electronic ormechanical, including photocopying and microfilm, without permission in writing from the ITU.Fascicle IV.1 - Rec. M.734 1Recommendation M.734Fascicle IV.1 - Rec. M.734EXCHANGE OF INFORMATION ON INCOMING TESTFACILITIES AT INTERNATIONAL SWITCHING
5、CENTRESThe attention of Administrations is drawn to the need to exchange information on the incoming test facilitieswhich they have provided at their international switching centres. The exchange of such information has an importantbearing on maintenance efficiency since it helps to avoid unnecessar
6、y requests for maintenance cooperation and theunder utilization of the facilities which have been provided.The form to be used for this purpose is shown in Figure 1/M.734. It provides, for the international switchingcentre and signalling system concerned, a description of the available test faciliti
7、es, their CCITT reference (whereapplicable), the access code to be used, and any necessary remarks (for example, an outline of the response to beexpected where the facility is not specified by CCITT). Figure 2/M.734 shows a hypothetical example of this formcompleted for a particular international sw
8、itching centre.Each Administration should distribute the completed forms to other Administrations as appropriate. Uponreceipt, Administrations should arrange that the information be distributed to the appropriate points within theirmaintenance organization, for example, circuit control station, test
9、ing point (transmission).Reference1 CCITT Recommendation CCITT automatic transmission measuring and signalling testing equipment ATMENo. 2, Vol. IV, Rec. O.22.2 Fascicle IV.1 - Rec. M.734PROVISION OF INCOMING TEST FACILITIESADMINISTRATION: INTERNATIONAL SWITCHING CENTRE:DATE: SIGNALLING SYSTEM:Test
10、facilitiesCCITTreferenceAccess code RemarksFIGURE 1/M.734Form for incoming test facilitiesFascicle IV.1 - Rec. M.734 3PROVISION OF INCOMING TEST FACILITIESADMINISTRATION:United Kingdom INTERNATIONAL SWITCHING CENTRE: London/MollisonDATE: November, 1979 SIGNALLING SYSTEM: CCITT No. 5Test facilitiesCC
11、ITTreferenceAccess code RemarksBalanced test termination KP1 C7 C12 022 ST Answer signal, then600 terminationReference test tone KP1 C7 C12 031 ST Answer signal, then1000 Hz at 10 dBm0ATME No. 2: responder Type a Rec. O.22 1 KP1 C7 C12 061 STATME No. 2: responder Type b Rec. O.22 1 KP1 C7 C12 062 STATME No. 2: responder Type c Rec. O.22 1 KP1 C7 C12 063 STFIGURE 2/M.734Form for incoming test facilities (hypothetical example only)
