1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 1 TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU%.%2!,G0G02%#/-%.$!4)/.3G0G0/.G0G04%,%0(/.%37)4#().G0G0!.$G0G03).!,).#,!53%3G0G0!00,)#!“,%G0G04/G0G0)45G134G0G034!.$!2$3934%-3.5-“%2).G0G053%$)45G134G0G0RecommendationG0G01 (Extract from the “LUEG0“OOK)NOTES1
2、 ITU-T Recommendation Q.103 was published in Fascicle VI.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 c
3、onditions 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 or utilized
4、in any form or by any means, electronic ormechanical, including photocopying and microfilm, without permission in writing from the ITU.Fascicle VI.1 - Rec. Q.103 1Recommendation Q.103Fascicle VI.1 - Rec. Q.1031.3 NUMBERING USED1.3.1 International prefixThe international prefix (see definition 1 in R
5、ecommendation Q.10) which gives subscribers access to theinternational automatic network is used only in automatic working and is not used in semi-automatic working.The international prefix is not included in the numerical signals sent out from the international outgoingexchange.1.3.2 Country code 1
6、)Information about country codes will be found under 8.2 in Recommendation Q.11. In the internationaloutgoing exchange, the country code is used:a) in automatic working for the purpose of giving access to outgoing circuits;b) in semi-automatic working it is required to give outgoing operators in the
7、 outgoing internationalexchange access to the circuit by means of selectors.The country code is sent on the international circuit or signalling channel:- in the case of transit calls;- in terminal and transit calls to a demand assignment system._1)The country code may not be used on some intraregional calls.
