ITU-T F.35-1988 使用国际二号电(ITA2)设备的国际公众自动报文交换业务操作所适用的规定 Provisions applying to the operation of and international public automatic message switching service

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ITU-T F.35-1988 使用国际二号电(ITA2)设备的国际公众自动报文交换业务操作所适用的规定 Provisions applying to the operation of and international public automatic message switching service 第 1 页 ITU-T F.35-1988 使用国际二号电(ITA2)设备的国际公众自动报文交换业务操作所适用的规定 Provisions applying to the operation of and international public automatic message switching service 第 2 页 ITU-T F.35-1988 使用国际二号电(ITA2)设备的国际公众自动报文交换业务操作所适用的规定 Provisions applying to the operation of and international public automatic message switching service 第 3 页 ITU-T F.35-1988 使用国际二号电(ITA2)设备的国际公众自动报文交换业务操作所适用的规定 Provisions applying to the operation of and international public automatic message switching service 第 4 页 ITU-T F.35-1988 使用国际二号电(ITA2)设备的国际公众自动报文交换业务操作所适用的规定 Provisions applying to the operation of and international public automatic message switching service 第 5 页
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INTERNATIONAL TELECOMMUNICATION UNION )45 4 & TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU /0%2!4)/.3 !.$ 15!,)49 /& 3%26)#% 4%,%'2!0( 3%26)#%3 02/6)3)/.3 !00,9).' 4/ 4(% /0%2!4)/. /& !. ).4%2.!4)/.!, 05",)# !54/-!4)# -%33!'% 37)4#().' 3%26)#% &/2 %15)0-%.43 54),):).' 4(% ).4%2.!4)/.!, 4%,%'2!0( !,0(!"%4 .O  )45 4 Recommendation & (Extract from the "LUE "OOK) NOTES 1 ITU-T Recommendation F.35 was published in Fascicle II.4 of the Blue Book. This file is an extract from the Blue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, the 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 a telecommunication administration and a recognized operating agency. © ITU 1988, 1993 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. Recommendation F.35 1) Fascicle II.4 - Rec. F.35 PROVISIONS APPLYING TO THE OPERATION OF AN INTERNATIONAL PUBLIC AUTOMATIC MESSAGE SWITCHING SERVICE FOR EQUIPMENTS UTILIZING THE INTERNATIONAL TELEGRAPH ALPHABET No. 2 The existence of message switching systems in various countries creates the need for international agreement on operational rules. This service, hereafter described, can be offered by the Administration, on an international basis, following a preliminary agreement by the Administrations concerned. The CCITT, considering (a) that message switching services are based on a technique of providing storage, routing and retransmission of messages; (b) that the existence of present terminals and systems utilizing the International Telegraph Alphabet No. 2 justifies the provision of a Recommendation for an automatic message switching service; (c) that terminals and systems in use conform to the relevant CCITT Recommendations; (d) that the application of operational rules in this kind of environment does not preclude the development of messaging services, unanimous declares unanimously declares that the following provisions should be applied when a public message switching service is being provided internationally for equipment utilizing the International Telegraph Alphabet No. 2. 1 General 1.1 The format to be used shall comprise a layout with the following basic components: – – the routing line, – the origin line. – 1.2 the identification line, the text. Length of messages As a general rule, the length of messages should not exceed 10 000 printed characters, spaces or separators. Nevertheless, Administrations may establish a different limit by bilateral agreement. 1.3 Sequence of signs The uninterrupted repetition of any sign shall be tolerated up to a number of characters corresponding to a printed line varying in length according to the mode of operation used. Beyond this limit, the message shall be refused; subsequent signs forming part of the repetition shall be ignored. _______________ 1) Formerly numbered F.150 in the Red Book. Fascicle II.4 - Rec. F.35 1 1.4 Routing Messages shall be routed on circuits and systems in accordance with arrangements and modalities agreed between the Administrations concerned. As a rule, each system shall only receive messages for direct retransmission to national users. When difficulties arise in this routing, only the standby circuits and systems previously designated as such shall be brought into use. If, however, the standby equipments previously agreed upon prove to be inadequate owing to the special nature of the difficulty, the traffic may be routed on other circuits or systems with the prior agreement of the Administrations concerned or of instances appointed by them for the purpose. To avoid critical obstruction of the system or systems used for emergency routing, traffic cannot be deviated until the agreement of the Administrations concerned has been obtained; any restrictions placed on the deviation must be observed. 1.5 Service traffic Service traffic exchanged through a system must conform with the example given in § 5.2. In all cases, the reference data relating to the original message must appear at the beginning of the text of the service correspondence. These data must in no case be preceded by other information. In cases directly concerned with interworking between systems, the service traffic must be addressed to the system itself. 1.6 Effects of one system on another Traffic between two directly interconnected systems may be affected by the following commands: – an order to the partner to stop and then to resum

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