1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T E.164 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 2 (06/2014) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS International operation Numbering plan of the internat
2、ional telephone service The international public telecommunication numbering plan Supplement 2: Number portability Recommendation ITU-T E.164 Supplement 2 ITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS INTERNATIONAL OPERATION Definiti
3、ons E.100E.103 General provisions concerning Administrations 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 sig
4、nalling systems E.180E.189 Numbering plan of the international 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 serv
5、ice E.230E.249 Measuring and recording call durations for 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 N
6、ETWORK MANAGEMENT International service statistics E.400E.404 International network management E.405E.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
7、number of circuits in manual operation E.510E.519 Determination 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
8、engineering E.750E.799 QUALITY OF TELECOMMUNICATION SERVICES: 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 c
9、oncepts of telecommunication services E.845E.859 Use of 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 OTHER E.900E.999 INTERNATIONAL OPERATION Numbering plan o
10、f the international telephone service E.1100E.1199 NETWORK MANAGEMENT International network management E.4100E.4199 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T E.164/Suppl.2 (06/2014) i Recommendation ITU-T E.164 The international public telecommunication numbe
11、ring plan Supplement 2 Number portability Summary Supplement 2 to Recommendation ITU-T E.164 defines standard terminology for a common understanding of the different aspects of number portability within an ITU-T E.164 numbering scheme. It identifies numbering and addressing formats, call flows, netw
12、ork architectures and routing approaches that will provide alternative methods of implementation. It also proposes some examples of the administrative and operational processes required for the successful implementation of number portability. History Edition Recommendation Approval Study Group Uniqu
13、e ID* 1.0 ITU-T E.164/I.331 1984-10-19 11.1002/1000/3147 2.0 ITU-T E.164/I.331/Q.11 bis 1988-11-25 11.1002/1000/415 3.0 ITU-T E.164/I.331 1991-08-23 II 11.1002/1000/416 4.0 ITU-T E.164 1997-05-30 2 11.1002/1000/4057 4.1 ITU-T E.164 Suppl. 2 1998-11-13 2 11.1002/1000/4646 4.2 ITU-T E.164 Suppl. 3 200
14、2-05-16 2 11.1002/1000/6095 4.3 ITU-T E.164 Suppl. 4 2003-05-02 2 11.1002/1000/3525 5.0 ITU-T E.164 2005-02-24 2 11.1002/1000/7430 5.1 ITU-T E.164 Suppl. 2 2009-11-24 2 11.1002/1000/10690 5.3 ITU-T E.164 Suppl. 2 2012-03-29 2 11.1002/1000/11619 5.4 ITU-T E.164 Suppl. 5 2008-05-15 2 11.1002/1000/9521
15、 6.0 ITU-T E.164 2010-11-18 2 11.1002/1000/10688 6.1 ITU-T E.164 (2010) Amd. 1 2011-06-10 2 11.1002/1000/11025 6.2 ITU-T E.164 Suppl. 1 1998-03-09 2 11.1002/1000/4510 6.3 ITU-T E.164 Suppl. 2 2014-06-06 2 11.1002/1000/12307 6.4 ITU-T E.164 Suppl. 3 2004-05-28 2 11.1002/1000/7392 6.5 ITU-T E.164 Supp
16、l. 3 (2004) Amd. 1 2009-11-24 2 11.1002/1000/10691 6.6 ITU-T E.164 Suppl. 4 2004-05-28 2 11.1002/1000/7393 6.7 ITU-T E.164 Suppl. 4 (2004) Amd. 1 2009-11-24 2 11.1002/1000/10692 6.8 ITU-T E.164 Suppl. 5 2009-11-24 2 11.1002/1000/10693 6.9 ITU-T E.164 Suppl. 6 2012-03-29 2 11.1002/1000/11624 _ * To a
17、ccess the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T E.164/Suppl.2 (06/2014) FOREWORD The International Telecommunication Union (ITU) is
18、 the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing
19、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, produce Recommendations on these topics.
20、 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 publication, the expression “Admin
21、istration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and complian
22、ce with the publication 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 that compliance with the publication is require
23、d of any party. INTELLECTUAL PROPERTY RIGHTSITU 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 Pr
24、operty Rights, whether asserted by ITU members 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, implement
25、ers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written pe
26、rmission of ITU. Rec. ITU-T E.164/Suppl.2 (06/2014) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Supplement 2 4 Abbreviations and acroynms 3 5 ITU-T E.164 number structures 4 5.1 International public telecommunication
27、 number for geographic areas 5 5.2 International public telecommunication number for global services . 5 5.3 International public telecommunication number for networks 6 6 Number portability types for national ITU-T E.164 numbers 6 7 Generic implementation of number portability 7 8 Entities addresse
28、d by routing 8 9 Number portability mechanisms . 8 9.1 Assumptions . 8 9.2 General description . 8 10 Types of addresses and numbers within networks and across network boundaries 12 10.1 Concatenated address . 12 10.2 Separated addresses 13 10.3 RN only sent between networks . 14 10.4 DN only (norma
29、lly across network boundaries) 14 11 Combinations of addressing types, addressed entities and mechanisms: general signalling requirements . 15 12 Examples of locations of OpDBs and CRDBs for number portability . 16 12.1 General description . 16 12.2 Examples of a number portability database solution
30、 16 13 Administrative processes 20 Rec. ITU-T E.164/Suppl.2 (06/2014) 1 Recommendation ITU-T E.164 The international public telecommunication numbering plan Supplement 2 Number portability 1 Scope This Supplement defines standard terminology for a common understanding of the different aspects of num
31、ber portability within an ITU-T E.164 numbering plan. This Supplement identifies numbering and addressing formats, call flows, network architectures, database structures, and routing approaches that will provide alternative methods of implementation. It also proposes some examples of the administrat
32、ive and operational processes required for the successful implementation of number portability. 2 References ITU-T E.101 Recommendation ITU-T E.101 (2009), Definitions of terms used for identifiers (names, numbers, addresses and other identifiers) for public telecommunication services and networks i
33、n the E-series Recommendations. ITU-T E.129 Recommendation ITU-T E.129 (2009), Presentation of national numbering plans. ITU-T E.164 Recommendation ITU-T E.164 (2010), The international public telecommunication numbering plan. ITU-T Q-Sup.3 ITU-T Q-series Recommendations Supplement 3 (1998), Number
34、portability Scope and capability set 1 architecture. ITU-T Q-Sup.4 ITU-T Q-series Recommendations Supplement 4 (1998), Number portability Capability set 1 requirements for service provider portability (All call query and Onward routing). ITU-T Q-Sup.5 ITU-T Q-series Recommendations Supplement 5 (199
35、9), Number portability Capability set 2 requirements for service provider portability (Query on release and Dropback). ETSI TR 101 698 ETSI TR 101 698 V1.1.1 (1999), Number Portability Task Force (NPTF); Administrative support of service provider portability for geographic and non-geographic numbers
36、. ETSI TR 184 003 ETSI TR 184 003 V3.1.1 (2010), Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Portability of telephone numbers between operators for Next Generation Networks (NGNs). ETSI TS 184 011 ETSI TS 184 011 V3.1.1 (2011), Telecommunication
37、s and Internet converged Services and Protocols for Advanced Networking (TISPAN); Requirements and usage of E.164 numbers in Next Generation Network (NGN) and Next Generation Corporate Network (NGCN). IETF RFC 5067 IETF RFC 5067 (2007), Infrastructure ENUM requirements. 2 Rec. ITU-T E.164/Suppl.2 (0
38、6/2014) IETF RFC 6116 IETF RFC 6116 (2011), The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM). 3 Definitions The following terms used in this Supplement are to apply within the context of number portability. 3.1 Terms defined elsewhere This
39、 Supplement uses the following terms defined elsewhere: 3.1.1 address ITU-T E.101: An address identifies a specific network termination point and can be used for routing to this physical and logical termination point inside a public or private network. 3.1.2 geographic number ITU-T E.101: An E.164 n
40、umber which corresponds to a discrete geographic area. 3.1.3 non-geographic number ITU-T E.101: An E.164 number which has no geographic significance. 3.1.4 E.164 numbering plan ITU-T E.101: A type of numbering plan that specifies the format and structure of the numbers used within that plan. It typi
41、cally consists of decimal digits segmented into groups in order to identify specific elements used for identification, routing and charging capabilities, e.g., to identify countries, national destinations and subscribers. An E.164 numbering plan does not include prefixes, suffixes, and additional in
42、formation required to complete a call. The national numbering plan (NNP) is the national implementation of the international E.164-numbering plan (also called the international public telecommunication numbering plan) 3.1.5 routing number ITU-T E.101: An address/number, only used for routing purpose
43、s and not known by end users, that is derived and used by the public telecommunication network to route the call/session towards the network termination point. This address/number can also be used to route calls towards a ported number 3.1.6 service number ITU-T E.101: A non-geographic E.164 number
44、allocated to a specific category of services. 3.1.7 number portability (NP) query ETSI TR 184 003: A query to OpDB. 3.2 Terms defined in this Supplement This Supplement defines the following terms: 3.2.1 central reference database: A non-real time database that is used to store a countrys number por
45、tability routing data. The data contained in the central reference database (CRDB) usually consist of a list of ported telephone numbers with associated domain names, routing numbers and optionally further information of an administrative nature required to support the processing of a ported telepho
46、ne number from one service provider to another service provider. These data can directly provide routing information (i.e., routing number) or are stored in a format which requests further processing in order to render routing information. It is a national decision if there is to be a unique adminis
47、trative CRDB and/or whether there is to be a physical CRDB system or a logical one, which may be distributed or replicated among the service providers involved. 3.2.2 directory number: See end users number. 3.2.3 donor network: The initial network where a number was located before ever being ported.
48、 3.2.4 donor service provider: The service provider from whom the number was initially ported. Rec. ITU-T E.164/Suppl.2 (06/2014) 3 3.2.5 end users number: The ITU-T E.164 number, also referred to as the telephone number from ITU-T E.101 for telephone calls, used by the calling party to establish a
49、call/session to the end user. This number is also used for presentation services such as calling line identification (CLI) and connected line identification presentation (COLP). The end users number is equivalent to a directory number. 3.2.6 ENUM query: Query made using ENUM in order to resolve a specific ITU-T E.164 number to a routable URI. 3.2.7 location portability: The ability of an end user to retain nationally the same national ITU-T E.164 public t
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