1、 International Telecommunication Union ITU-T E.152TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2006) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS International operation Operation of international telephone services International freephone servic
2、e ITU-T Recommendation E.152 ITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS INTERNATIONAL OPERATION Definitions E.100E.103 General provisions concerning Administrations E.104E.119 General provisions concerning users E.120E.139 Operati
3、on 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 international telephone service E.190E.199 Maritime mobile service and public
4、 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 for accounting purposes E.260E.269 UTILIZATION OF THE INTERNATIONAL TELE
5、PHONE 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.400E.404 International network management E.405E.419 Checking the quality
6、 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 Determination of the number of circuits in automatic and semi-automatic oper
7、ation 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 SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING Terms an
8、d 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 quality of service objectives for planning of telecommunication networ
9、ks E.860E.879 Field data collection and evaluation on the performance of equipment, networks and services E.880E.899 OTHER E.900E.999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. E.152 (05/2006) i ITU-T Recommendation E.152 International freephone service Summar
10、y Experience with the International Freephone Service has shown that carriers have developed their own service order forms that are different to Annexes A, B, C and D of the existing Recommendation. Consequently, the service order forms have been amended to better suit the actual need for informatio
11、n exchange between carriers. In addition, a global change has been made to ensure that the use of terms and definitions are consistent throughout the Recommendation. Source ITU-T Recommendation E.152 was approved on 11 May 2006 by ITU-T Study Group 2 (2005-2008) under the Resolution 1 procedure. ii
12、ITU-T Rec. E.152 (05/2006) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operatin
13、g and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produ
14、ce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this
15、 Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. inter
16、operability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest th
17、at compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence,
18、validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be
19、required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2007 All rights reserved. No part of this publication may be reproduced, by any means whatsoever,
20、 without the prior written permission of ITU. ITU-T Rec. E.152 (05/2006) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Terms and definition. 1 4 Service definition 1 5 Service management. 3 5.1 Service ordering General procedure 3 5.2 Procedures for IFS access in the country of origin via dialling a
21、 national freephone number (Access Method No. 1). 4 5.3 Procedure for IFS access in the country of origin via dialling a universal international freephone number (Access Method No. 3) . 6 5.4 Common service management aspects. 8 5.5 Operational aspects. 9 5.6 Data collection 10 6 Customer service fe
22、atures. 10 6.1 Announcement for caller 10 6.2 Geographical zone call routing. 10 6.3 Variable call routing. 10 6.4 Additional customer service statistics 11 6.5 Directory assistance/listing services. 12 7 Operational provisions 13 7.1 Service operational requirements . 13 7.2 Network management. 13
23、7.3 Quality of service . 13 Annex A IFS National freephone number request form (Notes on preparation of national freephone number reservation request form) 14 Annex B IFS Universal international freephone number access service order form. 18 Annex C IFS portability 20 Annex D IFS Test call request f
24、orm 28 ITU-T Rec. E.152 (05/2006) 1 ITU-T Recommendation E.152 International freephone service 1 Scope This Recommendation provides the service description for the International Freephone Service (IFS), along with information on the service ordering process and other service operational aspects. 2 R
25、eferences The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision;
26、users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recom
27、mendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T Recommendation D.115 (2004), Tariff principles and accounting for the International Freephone Service (IFS). ITU-T Recommendation E.105 (1992), International telephone service. ITU-T Recommendation E.169.1 (
28、2001), Application of Recommendation E.164 numbering plan for universal international freephone numbers for international freephone service. 3 Terms and definitions This Recommendation defines the following terms: 3.1 IFS access provider: A Recognized Operating Agency (ROA) in the country of origin
29、of the call which is responsible for ensuring the establishment of access to the international freephone number in that country. 3.2 IFS provider: The Recognized Operating Agency (ROA) which provides the international freephone service to the IFS customer and is responsible for all relations with th
30、e IFS customer concerning the international freephone service. 3.3 IFS customer: The individual or entity who (or which) obtains an international freephone service from an IFS service provider, and is responsible for payment of all charges due to that IFS service provider. 3.4 IFS caller: The person
31、 who places a call to an international freephone number. 3.5 routing number: A number format specified by the IFS service provider which identifies the called IFS customer and the originating country for routing purposes. The international freephone number dialled by the IFS caller is translated in
32、the country of call origination to this special routing number before the call is transferred to the IFS service provider. 4 Service definition 4.1 The international freephone service (IFS): Enables an IFS customer in one country to be assigned one or more special telephone numbers in other countrie
33、s which allow IFS callers in those countries to call the IFS customer free of charge. All service and call-related charges are paid by the IFS customer. 2 ITU-T Rec. E.152 (05/2006) 4.2 The international freephone service is provided by bilateral agreement between IFS service providers and IFS servi
34、ce access providers. Participating IFS service providers and IFS service access providers may choose to adopt any, or all, of the specific access methods indicated below: a) Access Method No. 1 Access in the country of origin via dialling a national freephone number. A number is assigned to the IFS
35、customer from the available national freephone numbers in each country from which the IFS customer wishes to receive IFS calls. The IFS caller dials the national freephone number, which is translated into a routing number and routed to the country of destination. Due to variations in freephone numbe
36、r structure among countries, it is likely that the assigned number cannot be the same in each country. NOTE 1 Some countries may use within their national numbering scheme differing national prefixes for freephone numbers which terminate calls within the country and for freephone numbers which termi
37、nate calls in another country. For the purpose of this Recommendation, both are national freephone numbers. b) Access Method No. 2 Access in the country of origin via international direct dialling of a foreign domestic freephone number. Access Method 2 has been withdrawn from this Recommendation. NO
38、TE 2 Although Access Method No. 2 has been withdrawn as an access method for IFS, the same dialling format may still be used for caller-paid IDD calls to domestic freephone numbers in other countries. c) Access Method No. 3 Access in the country of origin via dialling a universal international freep
39、hone number. A unique Universal International Freephone Number (UIFN) that is the same throughout the world is assigned to the IFS customer. The IFS caller dials the international prefix followed by the UIFN, which is translated into a routing number and routed to the country of destination. A UIFN
40、facilitates uniform global access to the IFS customer from all IFS service access providers who choose to offer this feature. The UIFN should be portable, giving IFS customers the ability to retain their UIFNs when changing IFS service providers. The UIFN access method can only be used where the int
41、ernational freephone service requested by the IFS customer is between two or more countries. The following chart compares some aspects of each of the access methods: Access method Country of destination identified in the dialled number One universally unique number No. 1 No No No. 3 No Yes 4.3 Throu
42、ghout this Recommendation, the IFS provider is the provider of the international freephone service to the IFS customer and is responsible for all relations with the IFS customer concerning the international freephone service. The IFS access provider is the ROA in the country of origin of the call th
43、at is responsible for the establishment of the access to the international freephone number in that country. Figure 1 depicts the relationship of the IFS provider and the IFS access provider as regards the direction of call flow. ITU-T Rec. E.152 (05/2006) 3 Figure 1/E.152 General environment of int
44、ernational freephone service 5 Service management This clause contains the administrative procedures concerning service ordering, service operation, number assignment, and data collection for each of the two IFS access methods (known as methods 1 and 3 for historical reasons). The IFS provider has t
45、he responsibility of processing all applications received on behalf of their IFS customer and will: obtain numbers requested by the IFS customer if available or an acceptable alternative; ensure that IFS customers do not promote their assigned international freephone number before the customer due d
46、ate; notify the IFS customer that: a) international freephone numbers are intended to allow IFS callers to call the IFS customer and may not be sold, licensed, or traded. Nor may they be transferred, except in the case of a merger, acquisition, or joint venture. The IFS customer must inform their IF
47、S service provider of any such transfer; b) the assignment of an international freephone number does not create an ownership interest, right or claim to the international freephone number on the part of the IFS customer. As the originator and interface with the IFS customer, the IFS provider has ove
48、rall control responsibilities to ensure the satisfactory completion of the service order for initiation, change, suspension and disconnection of service. The IFS provider and the IFS access provider should each appoint a contact person responsible for all general matters relating to IFS (a “service
49、manager“), as well as specific contacts for service ordering, testing and fault reporting. Information on these contacts should be exchanged between the IFS provider and the IFS access provider. 5.1 Service ordering General procedure The IFS provider will originate the service order on behalf of the IFS customer. The service order is sent via telefax or other mutually agreed telecommunication to the IFS access provider. A separate service order form should be sent to each IFS access provider from whom the IFS custo
