1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU E.193 (03/2000) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Operation, numbering, routing and mobile services - International operation - Numbering plan of the
2、international telephone service E.164 Country Code expansion ITU-T Recommendation E. 193 (Formerly CCITT Recommendation) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE
3、 SERVICE, SERVICE OPERATION AND HUMAN FACTORS OPERA TION, NUMBERING, ROUTING AND MOBILE SERVICES INTERNATIONAL OPERATION Definitions General provisions concerning Administrations General provisions concerning users Operation of international telephone services Numbering plan of the international tel
4、ephone service International routing plan Tones in national signalling systems Numbering plan of the international telephone service Maritime mobile service and public land mobile service OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE Charging in th
5、e international telephone service Measuring and recording call durations for accounting purposes UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON- TE LEP H ONY AP PLI CATI ONS General Phototelegraphy International routing plan QUALITY OF SERVICE, NETWORK MANAGEMENT AND TRAFFIC ENGINEERING
6、NETWORK MANAGEMENT ISDN PROVISIONS CONCERNING USERS International service statistics International network management Checking the quality of the international telephone service TRAFFIC ENGINEERING Measurement and recording of traffic Forecasting of traffic Determination of the number of circuits in
7、 manual operation Determination of the number of circuits in automatic and semi-automatic operation Grade of service Definitions ISDN traffic engineering Mobile network traffic engineering QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING Terms and defini
8、tions related to the quality of telecommunication services Models for telecommunication services Objectives for quality of service and related concepts of telecommunication services Use of quality of service objectives for planning of telecommunication networks Field data collection and evaluation o
9、n the performance of equipment, networks and services E. 1 00-E. 103 E.104-E.119 E. 120-E. 139 E. 140-E. 159 E. 160-E. 169 E. 170-E. 179 E. 180-E. 189 E.200-E.229 E.230-E.249 E.260-E.269 E.300-E.319 E.320-E.329 E.350-E.399 E.400-E.409 E.41 0-E.419 E.420-E.489 E.490-E.505 E.506-E509 E.510-E519 E.520-
10、E539 E.540-E599 E.600-E.699 E.700-E.749 E.750-E.799 E.800-E.809 E.810-E.844 E.845-E.859 E.860-E.879 E.880-E.899 For further details, please rer to the list of ITD-T Recommendations. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T
11、RECOMMENDATION E.193 E.164 COUNTRY CODE EXPANSION Summary This Recommendation provides the plan that expands the E. 164 country code resource (Time “E“), and provides the transition plan as well as the timefiame required for its implementation. Annex A provides the assumptions and assessment criteri
12、a against which each of the E.164 Country Code expansion options was evaluated. Source ITU-T Recommendation E.193 was prepared by ITU-T Study Group 2 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on 13 March 2000. Recommendation E. 193 (03/2000) 1 COPYRIGHT International Tel
13、ecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesFOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the
14、ITU. The 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 (WTSC), which meets every four years, establishes the
15、topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purvi
16、ew, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws a
17、ttention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members o
18、r others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not
19、 represent the latest information and are therefore strongly urged to consult the TSB patent database. o ITU 2000 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 permis
20、sion in writing fi-om the ITU. 11 Recommendation E.193 (03/2000) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesCONTENTS 1 2 3 4 5 6 6.1 6.2 6.3 7 8 Scope . References . Definitions Abbreviations Expansion Plan overview Phase I . Selec
21、ted Phase I expansion plan . 6.1.1 6.1.2 6.1.3 Transition to Phase I . Implementation of Phase I Phase II Recommendation History . Country Code for geographic areas . Country Code for global service Country Code for Networks . Annex A . E . 164 Country Code Expansion Report A.2 Assumptions A.3 Asses
22、sment criteria . A.3.1 End user considerations . A.3.2 Network operation considerations . A.3.3 Numbering resource utilizationefficiency A.3.4 Support of competitive market structure . A.3.5 Uniform availability of numbers . A.3.6 Evolutiontransition . A.3.7 Administration . A.3.8 Not impose disprop
23、ortionate burden . Description and discussion of proposed expansion options . A.4.1 A.4.2 A.4.3 A.l Scope . A.4 Phase I - Country Code Expansion options - No changes required . Phase II - Country Code Expansion options - Changes required . Description of Expansion options Appendix I - Rationale for
24、Elimination of Expansion Options . 1.2 Bibliography 1.1 Shared Country Codes for regional areas Recommendation E . 193 (032000) Page 1 1 1 1 2 2 2 3 3 4 5 5 5 6 6 6 6 7 7 8 8 8 8 8 9 9 9 9 9 10 12 12 12 . 111 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Informat
25、ion Handling ServicesIntroduction The issue of country code (CC) expansion had been raised due to the increasing demand for E. 164 numbering resources. Decisions made regarding the assignment of shared country code resources to Networks, the reservation and/or assignment of country codes for global
26、services; Universal International Freephone, Universal Personal Telecommunication (UPT), Universal International Premium Rate and Universal Shared Cost have impacted the availability of country codes. Consequently, the need exists to increase the supply of the E. 164 Country Code resource in order t
27、o satisfy the numbering resource requirements for countries/geographic areas, global services and Networks. iv Recommendation E.193 (03/2000) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesRecommendation E. 193 E.164 COUNTRY CODE EXPAN
28、SION (Geneva, 2000) 1 Scope This Recommendation provides the plan that expands the E. 164 country code resource (Time “E“), and provides the transition plan as well as the timefiame required for its implementation. Annex A provides the assumptions and assessment criteria against which each of the E.
29、164 Country Code expansion options was evaluated. 2 References 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 Recommend
30、ations and other references are subject to revision; all 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
31、 published. - ITU-T Recommendation E. 164 (1997), The international public telecommunication numbering plan. ITU-T Recommendation E. 190 (1 997), Principles and responsibilities for the management, assignment and reclamation of E-series international numbering resources. - 3 Definitions Within the i
32、ntegrated service environment, the terms used for all networks and services must be compatible and consistent. The terms and definitions used in this Recommendation are contained in Recommendations E. 164 and E. 190. 4 Abbreviations This Recommendation uses the following abbreviations: cc GSN IC ITU
33、-T NDC N(S)N oss SID SN UPT Country Code Global Subscriber Number Identification Code International Telecommunication Union - Telecommunication Standardization Sector National Destination Code National Significant Number Operations Support System Service Identification Subscriber Number Universal Pe
34、rsonal Telecommunication Recommendation E. 193 (03/2000) 1 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services5 Expansion Plan overview The Country Code Expansion plan is divided into two phases. Phase I (clause 6) evaluated various altern
35、atives which assessed, recommended and developed an implementation plan for the most efficient methods for utilizing the current E.164 Country Code resources without changing any of the existing assigned or reserved Country Codes. It is envisioned that the transition to Phase I implementation will b
36、e five years rom the time when such a transition is determined necessary. Phase II (clause 7) will assess, recommend and develop an implementation plan for those alternatives providing expansion of the current E. 164 resources and format, which may include changing existing assigned or reserved coun
37、try codes. Phase I was resolved prior to the decision on any expansion options listed in Phase II. The need for implementation of Phase II will be re-evaluated after experience is gained rom any Phase I implementation. Option 1 2 6 Phase I Table 1 represents the Phase I expansion options. For Mer de
38、tails and description of these options please refer to A.4.1. Description Use existing spare 3-digit CCs and increase CC length to 4 digits without changing any of the existing assigned or reserved CCs Use CCs in format “OXX“ 3 Shared Country Code for Global Services 6.1 Following the review and eva
39、luation of the Phase I options, it was agreed that: a) b) Selected Phase I expansion plan Options 1 and 3 will be implemented simultaneously; and Option 2 will continue to be available for an appropriate purpose and implementation at a yet to be determined time. At the time that it is determined tha
40、t the need exists for the assignment of these OXX Country Codes, the ITU-T will provide notification at least three years in advance of any assignment. When the expansion plan is implemented, the format and structure of E. 164 Country Codes will be revised as indicated in 6.1.1, 6.1.2 and 6.1.3. The
41、 maximum digit length for any E. 164 number will remain at 15 digits. The expansion of the number of digits in the Country Code field will impact the number of digits which will need to be analysed to properly route and rate the call. 2 Recommendation E.193 (03/2000) COPYRIGHT International Telecomm
42、unications Union/ITU TelecommunicationsLicensed by Information Handling Services6.1.1 See Figure 1. Country Code for geographic areas Max (1 5 - n) digits National (significant) number 1 to 4 digits t F4 F Max 15 digits F International public telecommunication Figure 1E.193 - International public te
43、lecommunication number structure for geographic areas 6.1.2 Country Code for global service 6.1.2.1 See Figure 2. Country Code for global service - I I GSN I Max 15 dinits I International public telecommunication number for global services 4 F T0208300-99 CC GSN Global Subscriber Number n Country Co
44、de for Global Service Number of digits in the Country Code Figure 2E.193 - International public telecommunication number structure for global services Recommendation E. 193 (03/2000) 3 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services6.1
45、.2.2 The structure, format, terms and assignment procedures are for further study. Therefore, Figure 3 is only intended to represent the implementation of expansion option 3. Shared Country Code for global service 1 or 2 digits Max(15-n)digits P -. Max 15 digits International public telecommunicatio
46、n number for global services T0208310-99 CC SID Service Identification GSN Global Subscriber Number n Country Code for Global Service Number of digits in the Country Code plus service identification (SID) Figure 3E.193 - International public telecommunication number structure for global services 6.1
47、.3 Country Code for Networks See Figure 4. 3 or 4 digits L Max 7 digits Max 15 digits International public telecommunication number for Networks 4 F 4 F T0208320-99 CC Country Code for Networks IC Identification Code SN Subscriber Number n Number of digits in the Country Code plus identification cod
48、e (IC) Figure 4E.193 - International public telecommunication number structure for networks NOTE - This could require the need to modify E. 164 to extend the digit analysis fi-om 7 to 8 digits in order to properly rate and route the call. Any change to E.164 will be made if and when the CC + IC assi
49、gnments exceed 7 digits. Network, with a capital “N“, is defined in E.164. 4 Recommendation E.193 (03/2000) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services6.2 Transition to Phase I The current spare decades of E.164 country code, 28, 83 and 89 have been initially reserved for expansion. The initial assignment of 4-digit Country Codes will be rom the decade sets 28 and 83 and will allow for the assignment of two hundred (200) 4-digit country codes. The decade set 89 should not be assigned as 4-digit Country Codes but shou
