1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Series E.300 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 6 (11/1988) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Operation of the international service Preparation of information to customers
2、travelling abroad ITU-T E.300-series Recommendations Supplement 6 (Formerly CCITT Recommendations) ITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS INTERNATIONAL OPERATION Definitions E.100E.103 General provisions concerning Administrat
3、ions E.104E.119 General provisions concerning users E.120E.139 Operation of international telephone services E.140E.159 Numbering plan of the international telephone service E.160E.169 International routing plan E.170E.179 Tones in national signalling systems E.180E.189 Numbering plan of the interna
4、tional telephone service E.190E.199 Maritime mobile service and public land mobile service E.200E.229 OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE Charging in the international telephone service E.230E.249 Measuring and recording call durations fo
5、r accounting purposes E.260E.269 UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON-TELEPHONY APPLICATIONS General E.300E.319 Phototelegraphy E.320E.329 ISDN PROVISIONS CONCERNING USERS E.330E.349 INTERNATIONAL ROUTING PLAN E.350E.399 NETWORK MANAGEMENT International service statistics E.400
6、E.409 International network management E.410E.419 Checking the quality of the international telephone service E.420E.489 TRAFFIC ENGINEERING Measurement and recording of traffic E.490E.505 Forecasting of traffic E.506E.509 Determination of the number of circuits in manual operation E.510E.519 Determ
7、ination of the number of circuits in automatic and semi-automatic operation E.520E.539 Grade of service E.540E.599 Definitions E.600E.649 Traffic engineering for IP-networks E.650E.699 ISDN traffic engineering E.700E.749 Mobile network traffic engineering E.750E.799 QUALITY OF TELECOMMUNICATION SERV
8、ICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING Terms and definitions related to the quality of telecommunication services E.800E.809 Models for telecommunication services E.810E.844 Objectives for quality of service and related concepts of telecommunication services E.845E.859 Use of
9、quality of service objectives for planning of telecommunication networks E.860E.879 Field data collection and evaluation on the performance of equipment, networks and services E.880E.899 For further details, please refer to the list of ITU-T Recommendations. E.300 series Supplement 6 (11/1988) i Sup
10、plement 6 to ITU-T E.300-series Recommendations Preparation of information to customers travelling abroad Summary This supplement lists the different information to be included in a pamphlet distributed to customers planning to travel abroad as a guidance for unusual telephone local procedures. Sour
11、ce Suplement 6 was approved in Melbourne (1988) and originally published in Blue Book, Fascicle II.2. ii E.300 series Supplement 6 (11/1988) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication
12、 Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (W
13、TSC), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSC Resolution 1. In some areas of information technology which fall
14、 within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHT
15、S ITU draws attention to the possibility that the practice or implementation of this publication may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU mem
16、bers or others outside of the publication development process. As of the date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementors are cautioned that this may not repres
17、ent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2002 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. E.300 series Supplement 6 (11/1988) 1 Supplement 6 to ITU
18、-T E.300-series Recommendations Preparation of information to customers travelling abroad Considering that some Administrations have found it desirable to provide information, usually in the form of a pamphlet, for the guidance of their customers who are planning to travel abroad, it is suggested th
19、at such information should include: i) information enabling the visitor to identify suitable payphones from which international telephone calls may be made in those countries where not all payphones afford international call facilities; ii) operating procedure for payphones in the country visited in
20、cluding dialling instructions for automatic calls, with an example of the composition of the digits to be dialled, i.e. international prefix, country code, trunk code (if necessary) and subscribers number. Special reference should be made to unfamiliar procedures and particularly to the need to omit
21、 the trunk prefix used in the destination country; iii) reference to the possibility that unfamiliar tones and recorded announcements may be encountered (see Annex A to Recommendation E.121 which gives guidance in identifying such tones); iv) an indication when an additional dialling tone may be enc
22、ountered and definition of the point in the dialling sequence at which it must be awaited; v) description of the paid-time expiration warning signal. Other useful information that may be considered desirable for inclusion is the following: a) time differences between home country and the country to
23、be visited; b) the advantage of writing down the required international telephone number before starting the call to minimize the risk of a dialling error; c) information on how the traveller may be called from his home country. Methods by which pamphlets may be distributed include provision of supp
24、lies at airport departure lounges, through telecommunications publicity, information points and travel agencies. It should be noted that no evidence is yet available to indicate whether the production of pamphlets does or does not contribute to the successful completion of international telephone ca
25、lls. Geneva, 2002 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series B Means of expression: definitions, symbols, classification Series C General telecommunication statistics Series D General tariff principles Series E Overall network operation, telephone service, serv
26、ice operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sou
27、nd programme and other multimedia signals Series K Protection against interference Series L Construction, installation and protection of cables and other elements of outside plant Series M TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and
28、leased circuits Series N Maintenance: international sound programme and television transmission circuits Series O Specifications of measuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and signalling Series R Telegraph transmiss
29、ion Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks and open system communications Series Y Global information infrastructure and Internet protocol aspects Series Z Languages and general software aspects for telecommunication systems
