ITU-T U 10-1993 Equipment of an International Telex Position - Telegraph Switching General (Study Group IX) 3 pp《国际用户电报座席设备-电报交换概述 第IX研究组 第3页》.pdf

1、ITU-T RECMN*U-LO 93 4862591 0586395 BOL INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU TELEGRAPH SWITCHING GENERAL u.l o (03/93) EQUIPMENT OF AN INTERNATIONAL TELEX POSITION ITU-T Recommendation U.l O (Previously “CCITT Recommendation”) ITU-T RECMN*U.LO 9

2、3 m 4862591 0586196 748 m FOREWORD The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom- munication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standard

3、izing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, established the topics for study by the -T Study Groups which, in their turn, produce Recommendations on these topics. ITU-T Recommendation U.10 was revised by

4、the ITU-T Study Group IX (1988-1993) and was approved by the WTSC (Helsinki, March 1-12, 1993). NOTES 1 As a consequence of a reform process within the International Telecommunication Union (ITU), the CCIT ceased to exist as of 28 February 1993. In its place, the ITU Telecommunication Standardizatio

5、n Sector (ITU-T) was created as of 1 March 1993. Similarly, in this reform process, the CCIR and the IFRB have been replaced by the Radiocommunication Sector. In order not to delay publication of this Recommendation, no change has been made in the text to references containing the acronyms “CCIT, CC

6、IR or IFRi3” or their associated entities such as Plenary Assembly, Secretariat, etc. Future editions of this Recommendation will contain the proper terminology related to the new ITU structure. 2 telecommunication administration and a recognized operating agency. In this Recommendation, the express

7、ion “Administration” is used for conciseness to indicate both a O ITU 1994 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. ITU-T REC

8、MN*U.LO 93 4862591 0586197 684 Recommendation U.10 EQUIPMENT OF AN INTERNATIONAL TELEX POSITION (former CCIT Recommendation F.60; modified at New Delhi, 1960 and Helsinki, 1993) The CCIT, considering that an international telex position that is a manual position in an international telex exchange an

9、d is used to set up international telex calls should be so equipped as to permit satisfactory operation in conformity with Recommenda- tion F.60 11, unanimously declares the following view (1) An international telex position must be equipped in such a way as to receive the clearing signal from both

10、sides. (2) It should not be possible to recall the operator of that position by a signal to an established connection, except if Recommendation U.21 is applied. (3) Precaution must be taken that, in the event of the operator of the international telex positions delaying to remove the plug on recepti

11、on of the clearing signais, a new call from a subscriber on one network cannot pass to the other network. (4) When the call has been established, the answer-back signals of equipment used at the intermediate telex positions must not be sent to line when the WRU signal (ITA2 combination No. 30 follow

12、ed by combination No. 4) is received. (5) The international telex position must be provided with equipment to determine the chargeable time of calls controlled by these positions, this timing equipment to be brought into operation in accordance with the Recommendation cited in 2 but to be stopped on receipt of the first clearing signal. References 111 Pl Ibid. (subclause 3.3). CCITT Recommendation Operational provisions for the international telex service, Rec. F.60. Recornmendation U.10 (03/93) 1