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本文(ITU-T Q 26-1988 DIRECT ACCESS TO THE INTERNATIONAL NETWORK FROM THE NATIONAL NETWORK《管理信号》.pdf)为本站会员(twoload295)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ITU-T Q 26-1988 DIRECT ACCESS TO THE INTERNATIONAL NETWORK FROM THE NATIONAL NETWORK《管理信号》.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 1 TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU%.%2!,G0G02%#/-%.$!4)/.3G0G0/.G0G04%,%0(/.%37)4#().G0G0!.$G0G03).!,).).4%2.!4)/.!,G0G03%-)G13!54/-!4)#G0G0!.$!54/-!4)#G0G07/2+).$)2%#4G0G0!#%33G0G04/G0G04(%G0G0).4%2.!4)/.!,.%47/2+G0G0&2/-G0G04(%G0G0.!4)/.!,G

2、0G0.%47/2+)45G134G0G0RecommendationG0G01 (Extract from the “LUEG0“OOK)NOTES1 ITU-T Recommendation Q.26 was published in Fascicle VI.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, the

3、contents of the file are identical to the Blue Book version and 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

4、rights reserved. No part of this publication may be reproduced or utilized 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.26 1Recommendation Q.26Fascicle VI.1 - Rec. Q.26DIRECT ACCESS TO TH

5、E INTERNATIONAL NETWORKFROM THE NATIONAL NETWORKThe choice of the method of access to an outgoing international exchange from the national network is apurely national matter. Nevertheless, if an international connection is set up by automatic switching from an exchangeother than the international ex

6、change which is the outgoing point of the international circuit used, arrangements shouldbe made in the national network to transmit over the international circuit at least the signals required to ensure thesatisfactory setting-up, control and clearing-down of the international connection.In additio

7、n, where a group of national circuits used in the above manner carries both semi-automatic andautomatic traffic, means should be provided for distinguishing between these two classes of traffic for the purposes ofinternational accounting 1.Reference1 CCITT Recommendation Basic technical problems concerning the measurement and recording of calldurations, Vol. II, Rec. E.260, 2.

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