itu: remove v1-derived docs (archived to GSMA/private-corpus); keep v2.0 cleared set only

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-
-
-**ITU-T**
-
-TELECOMMUNICATION  
-STANDARDIZATION SECTOR  
-OF ITU
-
-**E.118**
-
-(05/2006)
-
-SERIES E: OVERALL NETWORK OPERATION,  
-TELEPHONE SERVICE, SERVICE OPERATION AND  
-HUMAN FACTORS
-
-International operation – General provisions concerning  
-Administrations
-
----
-
-**The international telecommunication charge  
-card**
-
-ITU-T Recommendation E.118
-
-# ITU-T E-SERIES RECOMMENDATIONS
-
-# OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS
-
-|                                                                                                   |                    |
-|---------------------------------------------------------------------------------------------------|--------------------|
-| INTERNATIONAL OPERATION                                                                           |                    |
-| Definitions                                                                                       | E.100–E.103        |
-| <b>General provisions concerning Administrations</b>                                              | <b>E.104–E.119</b> |
-| General provisions concerning users                                                               | E.120–E.139        |
-| Operation of international telephone services                                                     | E.140–E.159        |
-| Numbering plan of the international telephone service                                             | E.160–E.169        |
-| International routing plan                                                                        | E.170–E.179        |
-| Tones in national signalling systems                                                              | E.180–E.189        |
-| Numbering plan of the international telephone service                                             | E.190–E.199        |
-| Maritime mobile service and public land mobile service                                            | E.200–E.229        |
-| OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE |                    |
-| Charging in the international telephone service                                                   | E.230–E.249        |
-| Measuring and recording call durations for accounting purposes                                    | E.260–E.269        |
-| UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON-TELEPHONY APPLICATIONS                 |                    |
-| General                                                                                           | E.300–E.319        |
-| Phototelegraphy                                                                                   | E.320–E.329        |
-| ISDN PROVISIONS CONCERNING USERS                                                                  | E.330–E.349        |
-| INTERNATIONAL ROUTING PLAN                                                                        | E.350–E.399        |
-| NETWORK MANAGEMENT                                                                                |                    |
-| International service statistics                                                                  | E.400–E.404        |
-| International network management                                                                  | E.405–E.419        |
-| Checking the quality of the international telephone service                                       | E.420–E.489        |
-| TRAFFIC ENGINEERING                                                                               |                    |
-| Measurement and recording of traffic                                                              | E.490–E.505        |
-| Forecasting of traffic                                                                            | E.506–E.509        |
-| Determination of the number of circuits in manual operation                                       | E.510–E.519        |
-| Determination of the number of circuits in automatic and semi-automatic operation                 | E.520–E.539        |
-| Grade of service                                                                                  | E.540–E.599        |
-| Definitions                                                                                       | E.600–E.649        |
-| Traffic engineering for IP-networks                                                               | E.650–E.699        |
-| ISDN traffic engineering                                                                          | E.700–E.749        |
-| Mobile network traffic engineering                                                                | E.750–E.799        |
-| QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING    |                    |
-| Terms and definitions related to the quality of telecommunication services                        | E.800–E.809        |
-| Models for telecommunication services                                                             | E.810–E.844        |
-| Objectives for quality of service and related concepts of telecommunication services              | E.845–E.859        |
-| Use of quality of service objectives for planning of telecommunication networks                   | E.860–E.879        |
-| Field data collection and evaluation on the performance of equipment, networks and services       | E.880–E.899        |
-| OTHER                                                                                             | E.900–E.999        |
-
-For further details, please refer to the list of ITU-T Recommendations.
-
-## **ITU-T Recommendation E.118**
-
-## **The international telecommunication charge card**
-
-## **Summary**
-
-Telecommunication charge cards may be issued by Operating Agencies (OAs) to allow customers to use their card in connection with various international services at appropriate charges for each transaction and have the charges billed to their account in the country where the OA issued the charge card. Cards issued by OAs in accordance with this Recommendation conform to the appropriate ISO standards.
-
-This Recommendation has been revised to allow alternative, application-specific standards for IC cards where unique form factors require such alternatives.
-
-## **Source**
-
-ITU-T Recommendation E.118 was approved on 11 May 2006 by ITU-T Study Group 2 (2005-2008) under the Resolution 1 approval process.
-
-## **History**
-
-|     |       |            |
-|-----|-------|------------|
-| 1.0 | E.118 | 1988-11-25 |
-| 2.0 | E.118 | 1992-08-04 |
-| 3.0 | E.118 | 1996-07-19 |
-| 4.0 | E.118 | 2001-02-02 |
-| 5.0 | E.118 | 2006-05-11 |
-
-## 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, operating 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, produce 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-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC.
-
-### NOTE
-
-In this 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. interoperability 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 that 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, 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 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 2006
-
-All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU.
-
-## CONTENTS
-
-|                                                                                              | Page |
-|----------------------------------------------------------------------------------------------|------|
-| 1 Scope .....                                                                                | 1    |
-| 2 References.....                                                                            | 1    |
-| 3 Abbreviations.....                                                                         | 1    |
-| 4 Numbering system.....                                                                      | 1    |
-| 4.1 Card numbering structure .....                                                           | 1    |
-| 4.2 Issuer identifier number assignment and registration procedure.....                      | 2    |
-| 4.3 Information content .....                                                                | 5    |
-| 5 Printed cards .....                                                                        | 5    |
-| 6 Magnetic stripe cards.....                                                                 | 5    |
-| 6.1 Encoding requirements.....                                                               | 5    |
-| 6.2 Expiration date.....                                                                     | 6    |
-| 6.3 Service code.....                                                                        | 6    |
-| 6.4 Discretionary data.....                                                                  | 6    |
-| 7 Integrated Circuit (IC) cards.....                                                         | 6    |
-| Annex A – Service code assignments .....                                                     | 7    |
-| Appendix I – Implementation guidelines for the assignment of issuer identifier numbers ..... | 8    |
-
-
-
-## The international telecommunication charge card
-
-## 1 Scope
-
-Telecommunication charge cards may be issued by Operating Agencies (OAs) to allow customers to use their card in connection with various international services at appropriate charges for each transaction and have the charges billed to their account in the country where the OA issued the charge card. Cards issued by OAs in accordance with this Recommendation conform to the appropriate ISO Standards.
-
-## 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 Recommendations and other references are subject to revision; 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 Recommendation does not give it, as a stand-alone document, the status of a Recommendation.
-
-- [1] ISO/IEC 7812-1:2000, *Identification cards – Identification of issuers – Part 1: Numbering system*.
-- [2] ITU-T Recommendation E.164 (2005), *The international public telecommunication numbering plan*.
-- [3] ISO/IEC 7812-2:2000, *Identification cards – Identification of issuers – Part 2: Application and registration procedures*.
-
-## 3 Abbreviations
-
-This Recommendation uses the following abbreviations:
-
-- IC Integrated Circuit
-- IIN Issuer Identifier Number
-- MII Major Industry Identifier
-
-## 4 Numbering system
-
-### 4.1 Card numbering structure
-
-The numbering of the card to be issued by OAs shall be as follows based on ISO/IEC 7812-1 [1] (Identification cards – Identification of issuers – Part 1: Numbering system) and ISO/IEC 7812-2 [3] (Identification cards – Identification of issuers – Part 2: Application and registration procedures).
-
-The maximum length of the visible card number (primary account number) shall be 19 characters and is composed of the following subparts (see Figure 1):
-
-- Major Industry Identifier (MII);
-- country code;
-- issuer identifier;
-- individual account identification number;
-- parity check digit computed according to the Luhn formula (see ISO/IEC 7812-1, Annex B [1]). In addition to the parity check digit, OAs may incorporate a validation check device in some location on the card which could be changed when new cards are issued.
-
-NOTE – Major industry and issuer identifier numbers of the form 66xxxx have already been assigned to some Administrations as a transitional measure. Charge cards of this type are fully compatible with ISO Standards.
-
-![Diagram of the charge card numbering system showing the structure of the 19-digit primary account number. The diagram is a horizontal bar divided into 19 cells. The first cell contains '8', the second contains '9'. Brackets above the bar label the first two cells as 'Issuer identification number (digits variable, maximum 7)'. A bracket above the entire 19-cell bar is labeled 'Primary account number 19 visible characters (maximum)'. Below the bar, arrows point from descriptive text to specific parts: 'Major industry identifier (MII) (ISO/IEC 7812-1) [1] "89" is assigned for telecommunication purposes' points to the first cell; 'Country code: ITU-T Rec. E.164 [2] (variable, 1 to 3 digits)' points to the second cell; 'Issuer identifier number (variable, but fixed number of digits within a country or world zone where appropriate)' points to a group of cells following the country code; 'Individual account identification number (variable, but fixed number of digits for each particular issuer identifier number)' points to the middle section of cells; and 'Luhn check digit' points to the final cell. The label 'E.118_F01' is in the bottom right.](d0abac95583b52a3b35f74a215567334_img.jpg)
-
-Diagram of the charge card numbering system showing the structure of the 19-digit primary account number. The diagram is a horizontal bar divided into 19 cells. The first cell contains '8', the second contains '9'. Brackets above the bar label the first two cells as 'Issuer identification number (digits variable, maximum 7)'. A bracket above the entire 19-cell bar is labeled 'Primary account number 19 visible characters (maximum)'. Below the bar, arrows point from descriptive text to specific parts: 'Major industry identifier (MII) (ISO/IEC 7812-1) [1] "89" is assigned for telecommunication purposes' points to the first cell; 'Country code: ITU-T Rec. E.164 [2] (variable, 1 to 3 digits)' points to the second cell; 'Issuer identifier number (variable, but fixed number of digits within a country or world zone where appropriate)' points to a group of cells following the country code; 'Individual account identification number (variable, but fixed number of digits for each particular issuer identifier number)' points to the middle section of cells; and 'Luhn check digit' points to the final cell. The label 'E.118\_F01' is in the bottom right.
-
-**Figure 1/E.118 – Charge card numbering system**
-
-### 4.2 Issuer identifier number assignment and registration procedure
-
-- The assignment of specific issuer identifier numbers should be the responsibility of a country or group of countries as appropriate. These numbers should only be assigned to OAs with the agreement of their Administrations.
-- These issuer identifier numbers are normally used to distinguish among multiple OAs who issue cards within a country. However, these numbers may also be used to distinguish individual countries sharing the same country code (as defined in ITU-T Rec. E.164 [2]) or, if appropriate, to distinguish both countries and issuers.
-- The Director of TSB is responsible for the registration and/or cancellation of issuer identifier numbers (IINs) for OAs with the approval of their Administrations. An illustrative registration form is contained in Figure 2.
-
-- d) A one-time fee shall be collected in order for an IIN to be assigned and registered by TSB. Applications shall be accompanied by evidence of payment to ITU of the one-time fee.
-- e) In the event of technical or operational difficulties in allocating an IIN, the Director of TSB should consult the Chairman of Study Group 2.
-- f) The TSB shall maintain a list of the allocated IINs.
-- g) Additions, deletions and changes to this list should be published in the first available ITU Operational Bulletin.
-- h) The consolidated list of allocated IINs should be published periodically in the ITU Operational Bulletin.
-
-#### Registration form for a single Issuer Identifier Number for the international telecommunication charge card
-
-To be returned with registration fee to:
-
-INTERNATIONAL TELECOMMUNICATION UNION  
-TELECOMMUNICATION STANDARDIZATION BUREAU  
-PLACE DES NATIONS, CH - 1211 GENEVE 20, SWITZERLAND  
-FAX: +41 22 730 5853
-
-##### A. TO BE COMPLETED BY APPLICANT (Card Issuer)
-
-|                                                                                                                                                          |           |                 |
-|----------------------------------------------------------------------------------------------------------------------------------------------------------|-----------|-----------------|
-| Name or organization                                                                                                                                     |           |                 |
-| Address to be registered (maximum two lines, 30 characters per line)                                                                                     |           |                 |
-| Principal contact in organization                                                                                                                        |           |                 |
-| Telephone number<br>+                                                                                                                                    | E-mail    | Fax number<br>+ |
-| Address for correspondence                                                                                                                               |           |                 |
-| Effective date of usage or cancellation                                                                                                                  |           |                 |
-| Date                                                                                                                                                     | Signature |                 |
-| In signing this form, the applicant accepts that further IINs will not be assigned to identify products, services, technologies or geographic locations. |           |                 |
-
-##### B. TO BE COMPLETED AND APPROVED BY THE TELECOMMUNICATIONS ADMINISTRATION<sup>a)</sup> OR DULY AUTHORIZED COORDINATING ORGANIZATION
-
-- a) Action requested (check appropriate box)   Registration    or Cancellation
-- b) Major industry identifier (MII): 89
-- c) Country code (CC): (according to the List, Complement to ITU-T Rec. E.164)
-- d) Issuer identifier number: (according to ITU-T Rec. E.118)
-
-|                                |           |
-|--------------------------------|-----------|
-| Name of approving organization |           |
-| Date                           | Signature |
-
-##### C. TO BE COMPLETED BY ITU (CENTRAL REGISTRATION AUTHORITY)
-
-|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   |   |  |  |  |  |  |       |
-|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|---|--|--|--|--|--|-------|
-| Issuer Identification Number registered or cancelled<br><table style="width: 100%; border-collapse: collapse;"> <tr> <td style="border: 1px solid black; width: 14.28%; text-align: center; padding: 2px;">8</td> <td style="border: 1px solid black; width: 14.28%; text-align: center; padding: 2px;">9</td> <td style="border: 1px solid black; width: 14.28%;"></td> <td style="border: 1px solid black; width: 14.28%;"></td> <td style="border: 1px solid black; width: 14.28%;"></td> <td style="border: 1px solid black; width: 14.28%;"></td> <td style="border: 1px solid black; width: 14.28%;"></td> </tr> </table> | 8 | 9 |  |  |  |  |  | Date: |
-| 8                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 9 |   |  |  |  |  |  |       |
-
-a) and/or Operating Agency (OA).
-
-#### METHOD OF PAYMENT (Please specify the form of payment used)
-
-- Switzerland: to ITU's current postal account, Geneva 12-50-3;
-- All other countries:   - by international money order, or  
-  - by bank transfer to UBS SA, ITU Geneva, Geneva (Switzerland)  
-  ITU Account No. 240-C8765565.0
-
-(Payment may also be effected by a cheque made out in another currency freely convertible into Swiss francs, provided that the cheque, when cashed and converted, will cover the amount of the registration fee in Swiss francs.)
-
-- By credit card   EUROCARD-MASTERCARD  VISA  AMERICAN EXPRESS
-
-Credit card number: Valid date:  
-Holder's name: Signature:
-
-(This form must be signed if you pay by credit card.) **Please note:** Letters of credit are not accepted.
-
-**Figure 2/E.118 – Illustrative registration form**
-
-### 4.3 Information content
-
-The information on an international telecommunication charge card shall clearly include:
-
-- 1) the card number (on a combined national/international card, the national number, if different, should be appropriately designated);
-
-and should optionally include:
-
-- 2) the name of the issuing OA<sup>1</sup> and, where appropriate, the country of issue;
-- 3) the card holder's name and signature;
-- 4) the date of expiry, in the format of either "MM/YY" or "MM-YY";
-- 5) instructions on how the card should be used. (Some OAs may prefer to issue instructions separately.)
-
-In addition, the logo of the ITU may, at the card issuer's option, appear somewhere on the card to facilitate recognition of the card by card acceptors where presentation of the card is required as a part of the service (i.e., bureau services).
-
-## 5 Printed cards
-
-The charge card should be designed to be conveniently carried. Current ISO Standards define the dimensions of financial transaction cards to be 85.60 mm × 53.98 mm (3.370 × 2.125 inches) and the ITU-T considers that telephone charge cards issued by OAs should have similar dimensions.
-
-## 6 Magnetic stripe cards
-
-For maximum flexibility, convenience of use and economic benefits, the magnetic stripe cards to be issued by OAs should conform to the relevant ISO Standards concerning materials, recording techniques, physical dimensions and the type and format of embossed information.
-
-These are:
-
-- ISO/IEC 7810: Identification cards – Physical characteristics.
-- ISO/IEC 7811-1: Identification cards – Recording technique – Part 1: Embossing.
-- ISO/IEC 7811-2: Identification cards – Recording technique – Part 2: Magnetic stripe – Low coercivity.
-- ISO/IEC 7811-6: Identification cards – Recording technique – Part 6: Magnetic stripe – High coercivity.
-- ISO/IEC 7813: Identification cards – Financial transaction cards.
-
-### 6.1 Encoding requirements
-
-Track 2 of the magnetic stripe on the telecommunication charge card shall be used as a primary means of communicating data encoded on the magnetic stripe. The Primary Account Number (PAN) is the only field that is required to be encoded. An example of the encoding of this minimum information is contained in Table 1.
-
----
-
-<sup>1</sup> Although optional, card issuer OAs are encouraged to include their name, where possible, to avoid problems when the card is presented to an operator.
-
-**Table 1/E.118 – Minimum encoding requirements**
-
-|     |                               |                                |
-|-----|-------------------------------|--------------------------------|
-| STX | Start Sentinel                | BCD 11                         |
-| PAN | Primary Account Number        | 89...(e.g., 8912538360010000L) |
-| FS  | Field Separator               | BCD 13                         |
-| ED  | Expiration Date               | BCD 13                         |
-| SC  | Service Code                  | BCD 13                         |
-| DD  | Discretionary Data            | null                           |
-| ETX | End Sentinel                  | BCD 15                         |
-| LRC | Longitudinal Redundancy Check | [1 digit]                      |
-
-Card issuers may, at their own discretion, encode data on track 2 of the telecommunication charge card in addition to the required information. This data is defined below. An example of the encoding of all such information (except discretionary data) is contained in Table 2.
-
-**Table 2/E.118 – Full encoding requirements**
-
-|     |                               |                                                                                                                                        |
-|-----|-------------------------------|----------------------------------------------------------------------------------------------------------------------------------------|
-| STX | Start Sentinel                | BCD 11                                                                                                                                 |
-| PAN | Primary Account Number        | 89...(e.g., 9812538360010000L)                                                                                                         |
-| FS  | Field Separator               | BCD 13                                                                                                                                 |
-| ED  | Expiration Date               | YYMM (e.g., "9612" for December 1996)                                                                                                  |
-| SC  | Service Code                  | XXX (e.g., "125" – International use, positive authorization is mandatory, telecommunications services only with a PIN being required) |
-| DD  | Discretionary Data            | ...                                                                                                                                    |
-| ETX | End Sentinel                  | BCD 15                                                                                                                                 |
-| LRC | Longitudinal Redundancy Check | [1 digit]                                                                                                                              |
-
-### 6.2 Expiration date
-
-If the expiration date is embossed on the front of the telecommunication charge card, it should also be encoded on track 2 of the magnetic stripe. The format is defined by ISO/IEC 7813 as YYMM. The position of the expiration date is shown in Table 2 and is dependent on encoding requirements and service agreements. If the expiration date is not embossed on the front of the card and it is not encoded on the magnetic stripe, a field separator shall be encoded in its place (see Table 1).
-
-### 6.3 Service code
-
-OAs are encouraged to encode information within the service code field. If it is not encoded on the magnetic stripe, a field separator shall be encoded in its place (see Table 1). There are three positions to the service code field. The positions and the interpretation for each of the possible values are contained in Annex A.
-
-### 6.4 Discretionary data
-
-Any information contained in the discretionary data field is for further study.
-
-## 7 Integrated Circuit (IC) cards
-
-The standard for the IC card is to be established by ISO/IEC JTC 1/SC 17. In addition, specific applications (e.g., SIM cards in GSM applications and USIM cards in UMTS/IMT-2000 applications) may make use of alternative standards to address unique form factors of their application.
-
-## Annex A
-
-### Service code assignments
-
-Tables A.1 to A.3 describe the various values that may be used in each of the three positions of the service code field. For each value, the second column of each table describes how the value is interpreted specifically for cards defined by this Recommendation.
-
-The first digit of the service code describes the type of interchange permissible for the card. The second digit describes the level of authorization processing required to validate the card. For this Recommendation, this value is only interpreted for card systems using fully automated validation (see ITU-T Rec. E.113). The third digit describes the types of services allowable by the card holder.
-
-**Table A.1/E.118 – Permissible interchange values – Position 1**
-
-| Values | Telecommunication usage                                                   |
-|--------|---------------------------------------------------------------------------|
-| 0      | Not used                                                                  |
-| 1      | International use is permitted                                            |
-| 2      | International use is permitted for integrated circuit cards               |
-| 3      | Not used                                                                  |
-| 4      | Not used                                                                  |
-| 5      | Restricted to use on national networks only                               |
-| 6      | Restricted to use on national networks only, for integrated circuit cards |
-| 7      | Restricted for use only on the card issuer's network                      |
-| 8      | Not used                                                                  |
-| 9      | Usable for test purposes only                                             |
-
-**Table A.2/E.118 – Level of authorization – Position 2**
-
-| Values | Telecommunication usage                                                                                                                            |
-|--------|----------------------------------------------------------------------------------------------------------------------------------------------------|
-| 0      | No specific authorization defined                                                                                                                  |
-| 1      | Not used                                                                                                                                           |
-| 2      | Positive authorization is required when used in a full validation environment                                                                      |
-| 3      | Not used                                                                                                                                           |
-| 4      | Positive authorization is required when used in a full validation environment but special backup arrangements are defined in the service agreement |
-| 5      | Not used                                                                                                                                           |
-| 6      | Not used                                                                                                                                           |
-| 7      | Not used                                                                                                                                           |
-| 8      | Not used                                                                                                                                           |
-| 9      | Not used                                                                                                                                           |
-
-**Table A.3/E.118 – Service availability – Position 3**
-
-| <b>Values</b> | <b>Telecommunication usage</b>                                      |
-|---------------|---------------------------------------------------------------------|
-| 0             | Card not restricted to telecommunication services; PIN required     |
-| 1             | Card not restricted to telecommunication services                   |
-| 2             | Can be used to charge telecommunication services only               |
-| 3             | Not used within the scope of ITU-T Rec. E.116                       |
-| 4             | Not used within the scope of ITU-T Rec. E.116                       |
-| 5             | Can be used to charge telecommunication services only; PIN required |
-| 6             | Not used                                                            |
-| 7             | Not used                                                            |
-| 8             | Not used                                                            |
-| 9             | Not used                                                            |
-
-## **Appendix I**
-
-### **Implementation guidelines for the assignment of issuer identifier numbers**
-
-Card issuers will be assigned a single Issuer Identifier Number (IIN) from the ITU's block of "89" IINs. To assist card issuers in effectively planning card services and the TSB in processing applications, the following information may be helpful:
-
-- a) Separate Issuer Identifier Numbers should not be used to differentiate between different products or services for which the card may be used.
-- b) Separate Issuer Identifier Numbers should not be used to differentiate between technologies implemented in the card (e.g., magnetic stripe versus integrated circuit cards) or for products and services based on or implemented using different technologies (e.g., IP-based voice services versus circuit switched voice services).
-- c) Separate Issuer Identifier Numbers should not be used to differentiate between different branches or subsidiaries of the same corporation. However, situations where card issuers operating in different countries or regulatory environments where different accounting or settlement rates exist, the assignment of additional IINs to a specific card issuer may be justified.
-
-If card issuers need to make such differentiation, different values within the leading digits of the Individual Account Identification should be used.
-
-
-
-## SERIES OF ITU-T RECOMMENDATIONS
-
-|                 |                                                                                             |
-|-----------------|---------------------------------------------------------------------------------------------|
-| Series A        | Organization of the work of ITU-T                                                           |
-| Series D        | General tariff principles                                                                   |
-| <b>Series E</b> | <b>Overall network operation, telephone service, service operation and human factors</b>    |
-| 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, sound 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        | Telecommunication management, including TMN and network maintenance                         |
-| 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 transmission                                                                      |
-| 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, open system communications and security                                      |
-| Series Y        | Global information infrastructure, Internet protocol aspects and next-generation networks   |
-| Series Z        | Languages and general software aspects for telecommunication systems                        |

marked/E/T-REC-E.164-201011-I_PDF-E/raw.md

@@ -1,1062 +0,0 @@
-
-
-**ITU-T**
-
-TELECOMMUNICATION  
-STANDARDIZATION SECTOR  
-OF ITU
-
-**E.164**
-
-(11/2010)
-
-SERIES E: OVERALL NETWORK OPERATION,  
-TELEPHONE SERVICE, SERVICE OPERATION AND  
-HUMAN FACTORS
-
-International operation – Numbering plan of the  
-international telephone service
-
-# --- **The international public telecommunication numbering plan**
-
-Recommendation ITU-T E.164
-
-## ITU-T E-SERIES RECOMMENDATIONS **OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS**
-
-|                                                                                                   |                    |
-|---------------------------------------------------------------------------------------------------|--------------------|
-| INTERNATIONAL OPERATION                                                                           |                    |
-| Definitions                                                                                       | E.100–E.103        |
-| General provisions concerning Administrations                                                     | E.104–E.119        |
-| General provisions concerning users                                                               | E.120–E.139        |
-| Operation of international telephone services                                                     | E.140–E.159        |
-| <b>Numbering plan of the international telephone service</b>                                      | <b>E.160–E.169</b> |
-| International routing plan                                                                        | E.170–E.179        |
-| Tones in national signalling systems                                                              | E.180–E.189        |
-| Numbering plan of the international telephone service                                             | E.190–E.199        |
-| Maritime mobile service and public land mobile service                                            | E.200–E.229        |
-| OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE |                    |
-| Charging in the international telephone service                                                   | E.230–E.249        |
-| Measuring and recording call durations for accounting purposes                                    | E.260–E.269        |
-| UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON-TELEPHONY APPLICATIONS                 |                    |
-| General                                                                                           | E.300–E.319        |
-| Phototelegraphy                                                                                   | E.320–E.329        |
-| ISDN PROVISIONS CONCERNING USERS                                                                  | E.330–E.349        |
-| INTERNATIONAL ROUTING PLAN                                                                        | E.350–E.399        |
-| NETWORK MANAGEMENT                                                                                |                    |
-| International service statistics                                                                  | E.400–E.404        |
-| International network management                                                                  | E.405–E.419        |
-| Checking the quality of the international telephone service                                       | E.420–E.489        |
-| TRAFFIC ENGINEERING                                                                               |                    |
-| Measurement and recording of traffic                                                              | E.490–E.505        |
-| Forecasting of traffic                                                                            | E.506–E.509        |
-| Determination of the number of circuits in manual operation                                       | E.510–E.519        |
-| Determination of the number of circuits in automatic and semi-automatic operation                 | E.520–E.539        |
-| Grade of service                                                                                  | E.540–E.599        |
-| Definitions                                                                                       | E.600–E.649        |
-| Traffic engineering for IP-networks                                                               | E.650–E.699        |
-| ISDN traffic engineering                                                                          | E.700–E.749        |
-| Mobile network traffic engineering                                                                | E.750–E.799        |
-| QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING    |                    |
-| Terms and definitions related to the quality of telecommunication services                        | E.800–E.809        |
-| Models for telecommunication services                                                             | E.810–E.844        |
-| Objectives for quality of service and related concepts of telecommunication services              | E.845–E.859        |
-| Use of quality of service objectives for planning of telecommunication networks                   | E.860–E.879        |
-| Field data collection and evaluation on the performance of equipment, networks and services       | E.880–E.899        |
-| OTHER                                                                                             | E.900–E.999        |
-| INTERNATIONAL OPERATION                                                                           |                    |
-| Numbering plan of the international telephone service                                             | E.1100–E.1199      |
-| NETWORK MANAGEMENT                                                                                |                    |
-| International network management                                                                  | E.4100–E.4199      |
-
-For further details, please refer to the list of ITU-T Recommendations.
-
-# Recommendation ITU-T E.164
-
-# The international public telecommunication numbering plan
-
-# Summary
-
-Recommendation ITU-T E.164 provides the number structure and functionality for the five categories of numbers used for international public telecommunication: geographic areas, global services, Networks, groups of countries (GoC) and resources for trials. For each of the categories, it details the components of the numbering structure and the digit analysis required to successfully route the calls. Annex A provides additional information on the structure and function of international public telecommunication numbers (hereafter referred to as "international ITU-T E.164-numbers"). Annex B provides information on network identification, service parameters, calling/connected line identity, dialling procedures and addressing for geographic-based ISDN calls. Specific ITU-T E.164-based applications, which differ in usage, are defined in separate ITU-T Recommendations.
-
-## History
-
-| Edition | Recommendation              | Approval   | Study Group |
-|---------|-----------------------------|------------|-------------|
-| 1.0     | ITU-T E.164/I.331           | 1984-10-19 |             |
-| 2.0     | ITU-T E.164/I.331/Q.11 bis  | 1988-11-25 |             |
-| 3.0     | ITU-T E.164/I.331           | 1991-08-23 | II          |
-| 4.0     | ITU-T E.164                 | 1997-05-30 | 2           |
-| 4.1     | ITU-T E.164 Suppl. 2        | 1998-11-13 | 2           |
-| 4.2     | ITU-T E.164 Suppl. 3        | 2002-05-16 | 2           |
-| 4.3     | ITU-T E.164 Suppl. 4        | 2003-05-02 | 2           |
-| 4.4     | ITU-T E.164 Suppl. 5        | 2008-05-15 | 2           |
-| 5.0     | ITU-T E.164                 | 2005-02-24 | 2           |
-| 6.0     | ITU-T E.164                 | 2010-11-18 | 2           |
-| 6.1     | ITU-T E.164 Suppl. 1        | 1998-03-09 | 2           |
-| 6.2     | ITU-T E.164 Suppl. 2        | 2009-11-24 | 2           |
-| 6.3     | ITU-T E.164 Suppl. 3        | 2004-05-28 | 2           |
-| 6.4     | ITU-T E.164 Suppl. 3 Amd. 1 | 2009-11-24 | 2           |
-| 6.5     | ITU-T E.164 Suppl. 4        | 2004-05-28 | 2           |
-| 6.6     | ITU-T E.164 Suppl. 4 Amd. 1 | 2009-11-24 | 2           |
-| 6.7     | ITU-T E.164 Suppl. 5        | 2009-11-24 | 2           |
-
-## FOREWORD
-
-The International Telecommunication Union (ITU) is 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 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.
-
-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-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC.
-
-## NOTE
-
-In this 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., interoperability 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 that 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, 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 required to implement this Recommendation. However, implementers 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 2011
-
-All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU.
-
-# CONTENTS
-
-|      |                                                                                                    | Page |
-|------|----------------------------------------------------------------------------------------------------|------|
-| 1    | Introduction .....                                                                                 | 1    |
-| 2    | Scope .....                                                                                        | 1    |
-| 3    | References.....                                                                                    | 1    |
-| 4    | Definitions .....                                                                                  | 3    |
-| 4.1  | country code (CC) for geographic areas.....                                                        | 3    |
-| 4.2  | country code (CC) for global services.....                                                         | 3    |
-| 4.3  | country code (CC) for groups of countries.....                                                     | 3    |
-| 4.4  | country code (CC) for networks .....                                                               | 3    |
-| 4.5  | country code (CC) for trials.....                                                                  | 3    |
-| 4.6  | destination network (DN) code .....                                                                | 3    |
-| 4.7  | global service.....                                                                                | 3    |
-| 4.8  | global subscriber number (GSN).....                                                                | 3    |
-| 4.9  | group identification code (GIC) .....                                                              | 3    |
-| 4.10 | group identification code administrator (GICA) .....                                               | 3    |
-| 4.11 | groups of countries (GoC).....                                                                     | 4    |
-| 4.12 | identification code (IC).....                                                                      | 4    |
-| 4.13 | Network .....                                                                                      | 4    |
-| 4.14 | trial identification codes .....                                                                   | 4    |
-| 4.15 | trials .....                                                                                       | 4    |
-| 5    | Abbreviations.....                                                                                 | 4    |
-| 6    | International ITU-T E.164-number structure .....                                                   | 5    |
-| 6.1  | International ITU-T E.164-number length .....                                                      | 5    |
-| 6.2  | Structure of the international ITU-T E.164-number.....                                             | 5    |
-| 6.3  | Assignment of country codes (CCs).....                                                             | 8    |
-| 6.4  | Assignment of identification codes, group identification codes and trial identification codes..... | 8    |
-| 7    | International ITU-T E.164-number for geographic areas.....                                         | 8    |
-| 7.1  | Country code for geographic areas.....                                                             | 8    |
-| 7.2  | National (significant) number.....                                                                 | 9    |
-| 7.3  | Prefixes .....                                                                                     | 9    |
-| 7.4  | National numbering plan .....                                                                      | 10   |
-| 7.5  | Digit analysis .....                                                                               | 11   |
-| 8    | International ITU-T E.164-number for global services.....                                          | 11   |
-| 8.1  | Country code for global services.....                                                              | 11   |
-| 8.2  | Global subscriber number.....                                                                      | 12   |
-| 8.3  | Digit analysis .....                                                                               | 12   |
-| 8.4  | Evolution path to an international ITU-T E.164-number for global services .....                    | 12   |
-
-|         | Page                                                                                                        |    |
-|---------|-------------------------------------------------------------------------------------------------------------|----|
-| 9       | International ITU-T E.164-number for Networks .....                                                         | 12 |
-| 9.1     | Country code for Networks .....                                                                             | 12 |
-| 9.2     | Identification code .....                                                                                   | 12 |
-| 9.3     | Subscriber numbers .....                                                                                    | 12 |
-| 9.4     | Digit analysis .....                                                                                        | 13 |
-| 10      | International ITU-T E.164-number for groups of countries.....                                               | 13 |
-| 10.1    | Country code for groups of countries.....                                                                   | 13 |
-| 10.2    | Group identification code .....                                                                             | 13 |
-| 10.3    | Subscriber numbers .....                                                                                    | 13 |
-| 10.4    | Digit analysis .....                                                                                        | 13 |
-| 11      | International ITU-T E.164-numbering resources for Trials .....                                              | 14 |
-| 12      | International prefix .....                                                                                  | 14 |
-| 13      | Recommendation history .....                                                                                | 14 |
-| Annex A | – Clarification and explanation of the structure and function of international<br>ITU-T E.164-numbers ..... | 15 |
-| A.1     | Scope .....                                                                                                 | 15 |
-| A.2     | Structure .....                                                                                             | 15 |
-| A.3     | Number length .....                                                                                         | 15 |
-| A.4     | Unique identification of international ITU-T E.164-number for<br>geographic areas .....                     | 17 |
-| A.5     | Unique identification of international ITU-T E.164-number for global<br>services .....                      | 17 |
-| A.6     | Unique identification of international ITU-T E.164-number for Networks...                                   | 17 |
-| A.7     | Unique identification of international ITU-T E.164-number for groups of<br>countries .....                  | 18 |
-| A.8     | Non-ITU-T E.164 numbers .....                                                                               | 18 |
-| Annex B | – Application of international ITU-T E.164-numbers for ISDN .....                                           | 20 |
-| B.1     | Scope .....                                                                                                 | 20 |
-| B.2     | ISDN numbers .....                                                                                          | 20 |
-| B.3     | Addressing .....                                                                                            | 20 |
-| B.4     | Dialling procedures .....                                                                                   | 21 |
-| B.5     | Network identification.....                                                                                 | 21 |
-| B.6     | Service parameters.....                                                                                     | 22 |
-| B.7     | Calling/connected line identity .....                                                                       | 22 |
-
-# Recommendation ITU-T E.164
-
-# The international public telecommunication numbering plan
-
-# 1 Introduction
-
-The rapid advances in telecommunication technology coupled with increased diversification of customer demands served by a number of different types of dedicated public switched networks (fixed and mobile telephone, data, etc.) have created a need to provide a uniform customer access to the multitude of network structures (i.e., circuit, packet, IP-based, etc.). Implementation of these network architectures is ongoing in a number of countries and eventually these will be able to carry the full range of existing and new services.
-
-To provide a broad base for these new arrangements, numbering has been kept compatible with that originally established for international telephone service.
-
-# 2 Scope
-
-This Recommendation provides the number structure and functionality for the five categories of numbers used for international public telecommunication: geographic areas, global services, networks, groups of countries (GoC) and resources for trials. For each of the categories, it details the components of the numbering structure and the digit analysis required to successfully route the calls. Annex A provides additional information on the structure and function of international public telecommunication numbers (hereafter referred to as "international ITU-T E.164-numbers"). Annex B provides information on network identification, service parameters, calling/connected line identity, dialling procedures and addressing for geographic-based ISDN calls. Specific ITU-T E.164-based applications, which differ in usage, are defined in separate ITU-T Recommendations, e.g., [ITU-T E.168], Application of E.164 numbering plan for UPT.
-
-# 3 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 Recommendations and other references are subject to revision; 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 Recommendation does not give it, as a stand-alone document, the status of a Recommendation.
-
-- [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 in the E-series Recommendations.*
-- [ITU-T E.123] Recommendation ITU-T E.123 (2001), *Notation for national and international telephone numbers, e-mail addresses and web addresses.*
-- [ITU-T E.129] Recommendation ITU-T E.129 (2002), *Presentation of national numbering plans.*
-- [ITU-T E.131] Recommendation ITU-T E.131 (1988), *Subscriber control procedures for supplementary telephone services.*
-- [ITU-T E.164.1] Recommendation ITU-T E.164.1 (2005), *Criteria and procedures for the reservation, assignment and reclamation of E.164 country codes and associated identification codes (ICs).*
-
-- [ITU-T E.164.2] Recommendation ITU-T E.164.2 (2001), *E.164 numbering resources for trials.*
-- [ITU-T E.164.3] Recommendation ITU-T E.164.3 (2001), *Principles, criteria and procedures for the assignment and reclamation of E.164 country codes and associated identification codes for groups of countries.*
-- [ITU-T E.166] Recommendation ITU-T E.166/X.122 (1998), *Numbering plan interworking for the E.164 and X.121 numbering plans.*
-- [ITU-T E.168] Recommendation ITU-T E.168 (2002), *Application of E.164 numbering plan for UPT.*
-- [ITU-T E.169] Recommendation ITU-T E.169 (2002), *Application of Recommendation E.164 numbering plan for universal international numbers for international telecommunications services using country codes for global services.*
-- [ITU-T E.169.1] Recommendation ITU-T E.169.1 (2001), *Application of Recommendation E.164 numbering plan for universal international freephone numbers for international freephone service.*
-- [ITU-T E.169.2] Recommendation ITU-T E.169.2 (2000), *Application of Recommendation E.164 numbering plan for universal international premium rate numbers for the international premium rate service.*
-- [ITU-T E.169.3] Recommendation ITU-T E.169.3 (2000), *Application of Recommendation E.164 numbering plan for universal international shared cost numbers for international shared cost service.*
-- [ITU-T E.190] Recommendation ITU-T E.190 (1997), *Principles and responsibilities for the management, assignment and reclamation of E-series international numbering resources.*
-- [ITU-T E.191] Recommendation ITU-T E.191 (2000), *B-ISDN addressing.*
-- [ITU-T E.213] Recommendation ITU-T E.213 (1988), *Telephone and ISDN numbering plan for land mobile stations in public land mobile networks (PLMN).*
-- [ITU-T E.214] Recommendation ITU-T E.214 (2005), *Structure of the land mobile global title for the signalling connection control part (SCCP).*
-- [ITU-T E.331] Recommendation ITU-T E.331 (1991), *Minimum user-terminal interface for a human user entering address information into an ISDN terminal.*
-- [WTSA Res.20] ITU WTSA (Florianopolis, 2004) *Resolution 20, Procedures for allocation and management of international telecommunication numbering, naming, addressing and identification resources.*
-- [ETSI ETS 300 738] ETSI ETS 300 738 ed.1 (1997-06), *Human Factors (HF); Minimum Man-Machine Interface (MMI) to public network based supplementary services.*
-- [ETSI TS 100 907] ETSI TS 100 907 V7.1.0 (1999-08), *Digital cellular telecommunications system (Phase 2+) (GSM); Man-Machine Interface (MMI) of the Mobile Station (MS) (GSM 02.30 version 7.1.0 Release 1998).*
-
-# 4 Definitions
-
-Within the integrated service environment, the terms used for all networks and services must be compatible and consistent. The following definitions can be found in [ITU-T E.101].
-
-"Address", "dialling plan", "international prefix", "international public telecommunication number", "name", "national (significant) number", "national trunk prefix", "national destination code", "numbering plan", "prefix", "subscriber number" and "trunk code".
-
-This Recommendation defines the following terms.
-
-## 4.1 country code (CC) for geographic areas
-
-The combination of one, two or three digits identifying a specific country, countries in an integrated numbering plan, or a specific geographic area.
-
-## 4.2 country code (CC) for global services
-
-A 3-digit country code used to identify the global service.
-
-## 4.3 country code (CC) for groups of countries
-
-A shared 3-digit country code used in combination with a group identification code to identify a group of countries.
-
-## 4.4 country code (CC) for networks
-
-A shared 3-digit country code used in combination with an identification code to identify an international Network.
-
-## 4.5 country code (CC) for trials
-
-A shared 3-digit country code used in combination with a 3-digit trial identification code to identify a trial.
-
-## 4.6 destination network (DN) code
-
-An optional code field within the international ITU-T E.164-numbering plan which identifies the destination network serving the destination subscriber. It performs the destination network selection function of the NDC. In some instances, it can be combined with a trunk code to form the NDC. The DN code can be a decimal digit or a combination of decimal digits (not including any prefix).
-
-## 4.7 global service
-
-A service defined by ITU-T, provisioned on the public switched network, to which ITU-T has assigned a specific country code to enable the provision of that international service between two or more countries and/or integrated numbering plans.
-
-## 4.8 global subscriber number (GSN)
-
-The portion of the international ITU-T E.164-number that identifies a subscriber for a particular global service.
-
-## 4.9 group identification code (GIC)
-
-A one-digit identification code assigned to a group of countries.
-
-## 4.10 group identification code administrator (GICA)
-
-The organization entrusted by the assignee with the administration and management of the numbering resources behind a specific CC+GIC.
-
-## **4.11 groups of countries (GoC)**
-
-Several ITU- or UN-recognized countries sharing the same CC+GIC.
-
-## **4.12 identification code (IC)**
-
-The code subsequent to a country code for Networks that uniquely identifies an international Network.
-
-## **4.13 Network**
-
-Internationally interconnected physical nodes and operational systems operated and maintained by one or more ROAs to provide public telecommunications services. Private networks are not included in this definition. Note that the use of capital "N" in Networks indicates that this definition applies.
-
-## **4.14 trial identification codes**
-
-Three-digit identification codes that uniquely identify international public correspondence service trial participants.
-
-## **4.15 trials**
-
-The temporary implementation of a proposed new international public correspondence service for the purpose of determining its technical, operational, and business viability.
-
-# **5 Abbreviations**
-
-This Recommendation uses the following abbreviations:
-
-|       |                                                                                  |
-|-------|----------------------------------------------------------------------------------|
-| CC    | Country Code                                                                     |
-| CCITT | International Telegraph and Telephone Consultative Committee                     |
-| CDLI  | Called Line Identity                                                             |
-| CLI   | Calling Line Identity                                                            |
-| COLI  | Connected Line Identity                                                          |
-| DN    | Destination Network                                                              |
-| GoC   | Groups of Countries                                                              |
-| GIC   | Group Identification Code                                                        |
-| GICA  | Group Identification Code Administrator                                          |
-| GSN   | Global Subscriber Number                                                         |
-| IC    | Identification Code                                                              |
-| ISDN  | Integrated Services Digital Network                                              |
-| ITU   | International Telecommunication Union                                            |
-| ITU-T | International Telecommunication Union – Telecommunication Standardization Sector |
-| NDC   | National Destination Code                                                        |
-| NPI   | Numbering Plan Identifier                                                        |
-| N(S)N | National (Significant) Number                                                    |
-| NT2   | Network Termination 2                                                            |
-| PSTN  | Public Switched Telephone Network                                                |
-
-|      |                                          |
-|------|------------------------------------------|
-| ROA  | Recognized Operating Agency              |
-| SA   | Sub-Address                              |
-| SN   | Subscriber Number                        |
-| TC   | Trunk Code                               |
-| TIC  | Trial Identification Code                |
-| TON  | Type of Number                           |
-| TSB  | Telecommunication Standardization Bureau |
-| UIFN | Universal International Freephone Number |
-
-# 6 International ITU-T E.164-number structure
-
-This clause identifies five different structures for the international ITU-T E.164-number:
-
-- International ITU-T E.164-number for geographic areas.
-- International ITU-T E.164-number for global services.
-- International ITU-T E.164-number for Networks.
-- International ITU-T E.164-number for groups of countries.
-- International ITU-T E.164-number for trials.
-
-## 6.1 International ITU-T E.164-number length
-
-ITU-T recommends that the maximum number of digits for the international geographic, global services, Network and groups of countries applications should be 15 (excluding the international prefix). Administrations are invited to do their utmost to limit the digits to be dialled to the degree possible consistent with the service needs.
-
-## 6.2 Structure of the international ITU-T E.164-number
-
-The international ITU-T E.164-number is composed of a variable number of decimal digits arranged in specific code fields. The international ITU-T E.164-number code fields are the country code (CC) and remaining fields are specific to the use being made of the international ITU-T E.164 number as shown in Figures 1 to 5.
-
-A numbering plan does not include prefixes, suffixes, and additional information required to complete a call.
-
-**6.2.1** The international ITU-T E.164-number for geographic areas is composed of decimal digits arranged in two code fields: the country code (CC) and the national (significant) number N(S)N. The national (significant) number may be further subdivided into national destination code and subscriber number fields, according to national requirements, and is explained further in clause 7.2. This further subdivision is outside the scope of this Recommendation (see clause 7.4).
-
-Figure 1 shows the international ITU-T E.164-number structure for geographic areas.
-
-![Figure 1: International ITU-T E.164-number structure for geographic areas. The diagram shows three fields: CC (Country Code for geographic area), NDC (National Destination Code), and SN (Subscriber Number). CC is 1 to 3 digits. NDC is Max (15 - n) digits. SN is National (significant) number. The total length is Max 15 digits. The entire number is the International ITU-T E.164-number for geographic areas. E.164_F1](d4af765160d04ecef538e5066006dc77_img.jpg)
-
-CC Country Code for geographic area  
- NDC National Destination Code  
- SN Subscriber Number  
- n Number of digits in the country code
-
-Figure 1: International ITU-T E.164-number structure for geographic areas. The diagram shows three fields: CC (Country Code for geographic area), NDC (National Destination Code), and SN (Subscriber Number). CC is 1 to 3 digits. NDC is Max (15 - n) digits. SN is National (significant) number. The total length is Max 15 digits. The entire number is the International ITU-T E.164-number for geographic areas. E.164\_F1
-
-NOTE – National and international prefixes are not part of the international ITU-T E.164-number for geographic areas.
-
-**Figure 1 – International ITU-T E.164-number structure for geographic areas**
-
-**6.2.2** The international ITU-T E.164-number for global services (Figure 2) is composed of decimal digits arranged in two fields. The international service number code fields are the 3-digit country code for global services and the global subscriber number (GSN) that can vary depending on the specific service.
-
-Figure 2 shows the international ITU-T E.164-number structure for global services. The use of this format is service specific and is dependent on the numbering requirements as detailed in the appropriate Recommendation, e.g., [ITU-T E.169], Application of Recommendation E.164 numbering plan for universal international numbers for international telecommunications services using country codes for global services.
-
-![Figure 2: International ITU-T E.164-number structure for global services. The diagram shows two fields: CC (Country Code for global services) and GSN (Global Subscriber Number). CC is 3 digits. GSN is Max 12 digits. The total length is Max 15 digits. The entire number is the International ITU-T E.164-number for global services. E.164_F2](7f17c430b9598e4d748a8041457810b3_img.jpg)
-
-CC Country Code for global services  
- GSN Global Subscriber Number
-
-Figure 2: International ITU-T E.164-number structure for global services. The diagram shows two fields: CC (Country Code for global services) and GSN (Global Subscriber Number). CC is 3 digits. GSN is Max 12 digits. The total length is Max 15 digits. The entire number is the International ITU-T E.164-number for global services. E.164\_F2
-
-NOTE – National and international prefixes are not part of the international ITU-T E.164-number for global services.
-
-**Figure 2 – International ITU-T E.164-number structure for global services**
-
-**6.2.3** The international ITU-T E.164-number for Networks (Figure 3) is composed of decimal digits arranged in three code fields. The code fields are the three-digit country code (CC) for Networks field, the IC field, which varies in length from one to four digits, and the subscriber number (SN), which can be up to 15 digits minus the number of digits in the CC and IC fields.
-
-Figure 3 shows the international ITU-T E.164-number for Networks.
-
-![Diagram of International ITU-T E.164-number structure for Networks. It shows three fields: CC (Country Code for Networks) with 3 digits, IC (Identification Code) with 1 to 4 digits, and SN (Subscriber Number) with Max (12 - x) digits. The total length is Max 15 digits. The IC and SN fields together have a maximum length of 12 digits. The diagram is labeled E.164_F3.](af7916c89a458fdab6c3f443217388ae_img.jpg)
-
-E.164\_F3
-
-Diagram of International ITU-T E.164-number structure for Networks. It shows three fields: CC (Country Code for Networks) with 3 digits, IC (Identification Code) with 1 to 4 digits, and SN (Subscriber Number) with Max (12 - x) digits. The total length is Max 15 digits. The IC and SN fields together have a maximum length of 12 digits. The diagram is labeled E.164\_F3.
-
-CC Country Code for Networks
-
-IC Identification Code
-
-SN Subscriber Number
-
-x Number of digits in Identification Code
-
-NOTE – National and international prefixes are not part of the international ITU-T E.164-number for Networks.
-
-**Figure 3 – International ITU-T E.164-number structure for Networks**
-
-**6.2.4** The international ITU-T E.164-number for groups of countries (Figure 4) is composed of decimal digits arranged in three code fields. The code fields are the three-digit country code (CC) for groups of countries field, the group identification code (GIC) field, which is fixed at one digit, and the subscriber number (SN) field which can be up to 15 digits minus the number of digits in the CC and GIC fields.
-
-Figure 4 shows the international ITU-T E.164-number for groups of countries.
-
-![Diagram of International ITU-T E.164-number structure for groups of countries. It shows three fields: CC (Country Code for Groups of Countries) with 3 digits, GIC (Group Identification Code) with 1 digit, and SN (Subscriber Number) with Max 11 digits. The total length is Max 15 digits. The GIC and SN fields together have a maximum length of 12 digits. The diagram is labeled E.164_F4.](e9d825d87c5f85c8dba0664eace96ef4_img.jpg)
-
-E.164\_F4
-
-Diagram of International ITU-T E.164-number structure for groups of countries. It shows three fields: CC (Country Code for Groups of Countries) with 3 digits, GIC (Group Identification Code) with 1 digit, and SN (Subscriber Number) with Max 11 digits. The total length is Max 15 digits. The GIC and SN fields together have a maximum length of 12 digits. The diagram is labeled E.164\_F4.
-
-CC Country Code for Groups of Countries
-
-GIC Group Identification Code
-
-SN Subscriber Number
-
-NOTE – National prefixes are not part of the international ITU-T E.164-number for groups of countries.
-
-**Figure 4 – International ITU-T E.164-number structure for groups of countries**
-
-**6.2.5** The international ITU-T E.164 number for Trials (Figure 5) is composed of decimal digits arranged in two mandatory and one optional code fields. The code fields are the three-digit country code (CC) for trials and a one-digit trial identification code (TIC) field. An additional, optional subscriber number field may be deployed which can be up to 15 digits minus the number of digits in the CC and TIC fields.
-
-![Diagram showing the International ITU-T E.164-number structure for Trials. It consists of three main parts: 991 (3 digits), TIC (1 digit), and SN (Max 11 digits). The total length is Max 15 digits. The diagram also shows the relationship between the parts: 991 is 3 digits, TIC is 1 digit, SN is Max 11 digits, and the total length is Max 15 digits. The International ITU-T E.164-number for trials is the combination of all three parts.](4801720824e4b5e2361a5564f91cfb70_img.jpg)
-
-|                                             |         |               |
-|---------------------------------------------|---------|---------------|
-| 991                                         | TIC     | SN            |
-| 3 digits                                    | 1 digit | Max 11 digits |
-| Max 12 digits                               |         |               |
-| Max 15 digits                               |         |               |
-| International ITU-T E.164-number for trials |         |               |
-
-Diagram showing the International ITU-T E.164-number structure for Trials. It consists of three main parts: 991 (3 digits), TIC (1 digit), and SN (Max 11 digits). The total length is Max 15 digits. The diagram also shows the relationship between the parts: 991 is 3 digits, TIC is 1 digit, SN is Max 11 digits, and the total length is Max 15 digits. The International ITU-T E.164-number for trials is the combination of all three parts.
-
-TIC Trial Identification Code  
-SN Subscriber Number
-
-E.134(10)\_F<sup>5</sup>
-
-NOTE – National prefixes are not part of the international ITU-T E.164-number for Trials.
-
-**Figure 5 – International ITU-T E.164-number structure for Trials**
-
-## 6.3 Assignment of country codes (CCs)
-
-6.3.1 Country codes may be assigned to either geographic areas, global services, Networks or groups of countries.
-
-6.3.2 The status of country codes for geographic areas, global services, Networks and groups of countries is published periodically by TSB.
-
-6.3.3 All spare country codes will be assigned on a three-digit basis.
-
-6.3.4 The assignment and reservation of country codes shall follow the criteria and procedures, as defined in [ITU-T E.164.1], for geographic areas, global services and Networks; in [ITU-T E.164.3] for groups of countries.
-
-6.3.5 The CC for trials (i.e., 991) has already been allocated and is not considered further.
-
-## 6.4 Assignment of identification codes, group identification codes and trial identification codes
-
-6.4.1 The list of assigned and reserved identification codes with their associated country codes is published periodically by TSB.
-
-6.4.2 The assignment and reservation of identification codes shall follow the criteria and procedures, as defined in [ITU-T E.164.1], or [ITU-T E.164.2], or [ITU-T E.164.3] as appropriate.
-
-# 7 International ITU-T E.164-number for geographic areas
-
-Principles, criteria and procedures for the assignment of international ITU-T E.164-numbers for geographic areas may be found in [ITU-T E.190], and [ITU-T E.164.1].
-
-## 7.1 Country code for geographic areas
-
-The country code is used to select the destination country<sup>1</sup> (i.e., the country where the identified subscriber is registered or the country containing a point where the service is provided) and varies in length from 1 to 3 digits.
-
-<sup>1</sup> Whenever the term "country", "destination country" or "originating country" is used in this clause, it identifies a specific country, a group of countries in an integrated numbering plan or a specific geographical area.
-
-## 7.2 National (significant) number
-
-7.2.1 ITU-T recommends that the maximum number of digits of the national (significant) number, N(S)N, should be equal to  $15 - n$ , where  $n$  is the number of digits of the country code.
-
-7.2.2 The N(S)N is used to select the destination subscriber (in clause 7, the term "subscriber" means a human subscriber or a point where a service is provided). In selecting the destination subscriber, however, it may be necessary to select a destination network. To accomplish this selection, the N(S)N code field comprises a national destination code (NDC) followed by the subscriber's number (SN). The NDC and SN may be inseparably connected in some national applications to form a single composite dialling sequence.
-
-7.2.3 The NDC field, if used, will be variable in length depending upon the requirements of the destination country. Each NDC may have one of the following structures:
-
-- a) a destination network (DN) code, which can be used to select a destination network serving the destination subscribers;
-- b) a trunk code (TC);
-- c) any combination of destination network (DN) code and trunk code (TC).
-
-The NDCs of a geographic country code may consist of one of the above structures or others as defined by national numbering plan administrators.
-
-NOTE – The sequences DN-TC and TC-DN are a national matter. The various NDC options (TC/DN) are reflected in Figure 6.
-
-![](bffdddb47fced140f8d17fdc2a29f592_img.jpg)
-
-|               |        |    |    |
-|---------------|--------|----|----|
-| NDC Structure | Type 1 | DN |    |
-| NDC Structure | Type 2 | TC |    |
-| NDC Structure | Type 3 | DN | TC |
-| NDC Structure | Type 4 | TC | DN |
-
-E:164(10)\_F6
-
-**Figure 6 – Options for NDC structure**
-
-7.2.4 The SN varies in length depending on the requirements of the destination country.
-
-7.2.5 Where appropriate, identification of a specific network within the destination country shall be through the use of a NDC incorporated into the international ITU-T E.164-number.
-
-## 7.3 Prefixes
-
-### 7.3.1 Applications
-
-Prefixes are not part of the international ITU-T E.164-number and are not signalled over international boundaries. It is a national matter to decide whether prefixes can be signalled between domestic networks.
-
-Prefixes can also be used for carrier network and service selection nationally.
-
-### 7.3.2 National (trunk) prefix
-
-The national (trunk) prefix is not included in N(S)N. Accordingly, in the international service, the national (trunk) prefix of the country of destination must not be dialled.
-
-It should be noted that, in some countries, it is customary to consider for national purposes that the national (trunk) prefix is included in the national dialling plan, which is then not the N(S)N. A careful distinction must therefore be made between such national definition or practice and the ITU-T definition, which is internationally valid. In order to avoid misunderstanding, the ITU-T definition includes the word "significant" between brackets, reading as follows: "national (significant) number".
-
-It is recommended by ITU-T that the national numbering plan administrator of countries that have not yet adopted a trunk prefix for access to their national automatic trunk network adopt a prefix composed of a single digit, preferably 0. Irrespective of what digit is adopted as a trunk prefix, this digit should be precluded from being used also as a first digit of the N(S)N.
-
-The reasons for this recommendation are:
-
-- to provide the maximum degree of standardization of the national (trunk) prefixes used in different countries, so that dialling is made as easy as possible for a person travelling from one country to another;
-- to minimize the number of digits to be dialled;
-- to reduce user problems which arise because of the requirement, in automatic international operation, that the trunk prefix of the country of destination must not be dialled.
-
-In the automatic international service, following the international prefix and country code of the called country, the caller should dial the N(S)N of the called subscriber (i.e., without dialling the national (trunk) prefix).
-
-The use and printing of symbols and separators in national and international ITU-T E.164-numbers are detailed in [ITU-T E.123].
-
-## **7.4 National numbering plan**
-
-### **7.4.1 Characteristics of a national numbering plan**
-
-Each national numbering plan administrator should give the most careful consideration to the preparation of a national numbering plan for its own network. This plan should be designed:
-
-- a) to allow generous provision for future growth in the number of subscribers and services to the national system;
-- b) with the consideration that the national network will ultimately be accessible to subscribers in other countries by means of international dialling procedures;
-- c) so that subscribers would always be called by either the same N(S)N or SN, a national matter, regardless of where the call originated from within the national numbering plan.
-
-The numbering plan will be based on and evolve from the existing numbering plans applicable to national and international public telephone networks.
-
-Where multiple destinations (e.g., ROAs or operators) serve the called party's geographical area, the national numbering plan in the country of destination shall provide for discrimination between these ROAs or operators.
-
-The ten-digit decimal character set 0-9 is used throughout the numbering plan format including the subscriber number, national (significant) number and the country code.
-
-Prefixes and other information concerned with identifying selection procedures or network service parameters (such as quality of service or transit delay) do not form part of the international number.
-
-An integrated numbering plan shall include an unambiguous identification of a particular country. In addition, the number will identify networks within these countries, if required.
-
-### **7.4.2 Notification of national numbering changes**
-
-National numbering plan administrators should advise ITU-T, on a non-binding informational basis, of significant national numbering plan changes well in advance of the event, so that this information can be published by TSB. It is recommended that this notification be submitted at least 2 years in advance to ensure formal and timely information to the widest possible distribution.
-
-National numbering plan administrators are encouraged to inform other national numbering plan administrators of significant national numbering plan changes well in advance of its implementation. [ITU-T E.129] provides a standardized method for presenting the national numbering plans of all countries (i.e., each country's national implementation of the international ITU-T E.164-numbering plan) as well as a method by which this information (and changes to this information) is made available to all interested parties.
-
-## **7.5 Digit analysis**
-
-### **7.5.1 In order to determine:**
-
-- the country of destination;
-- the most appropriate network routing;
-- the proper charging,
-
-the originating country must analyse a number of digits of the international ITU-T E.164-number. The length of the national destination code (NDC) increases the potential requirement for number analysis because it provides for a combination of either a trunk code (TC) and/or a network identification function. Careful consideration should be given to the preparation of the national destination code (NDC) assignments.
-
-### **7.5.2 On international calls, the number analysis performed at the originating country need not be more than the country code and:**
-
-- four digits of the N(S)N in the case of a country with a three-digit country code;
-- five digits of the N(S)N in the case of a country with a two-digit country code;
-- six digits of the N(S)N in the case of a country with a one-digit country code.
-
-#### **7.5.3 The national numbering plan of a country should be such that digit analysis for incoming international calls need not exceed established limits applicable to the N(S)N but allows:**
-
-- a) determination of routing that reflects economic and other appropriate network factors;
-- b) distinctions for charging in those countries where distinctions are applicable.
-
-# **8 International ITU-T E.164-number for global services**
-
-The numbering plan for global services is service specific. Each use of an ITU-T E.164 country code for a global service needs to comply with numbering assignment principles, as specified in [ITU-T E.190], as identified for the specific service, and the criteria and procedures, as specified in [ITU-T E.164.1]. Refer to the appropriate numbering Recommendation for documentation regarding the numbering scheme and any service specific principles, e.g., [ITU-T E.168], Application of E.164 numbering plan for UPT.
-
-The international ITU-T E.164-number for global services is composed of the 3-digit country code applied for the global service and the global subscriber number (GSN). The maximum length is 15 digits (see Figure 2).
-
-## **8.1 Country code for global services**
-
-The country code for a global service is used to identify the global service and is three digits in length.
-
-## **8.2 Global subscriber number**
-
-The global subscriber number (GSN) consists of the digits following the country code for the global service. The structure and functionality of these digits is application dependent and will be addressed in the appropriate global service numbering Recommendations, e.g., [ITU-T E.169], Application of Recommendation E.164 numbering plan for universal international numbers for international telecommunications services using country codes for global services.
-
-## **8.3 Digit analysis**
-
-Digit analysis for global services is service specific. In order to determine the specific global service, and the call routing and charging, the digit analysis should not exceed seven digits, e.g., three-digit CC + 4 digits of N(S)N. Refer to the appropriate ITU-T numbering Recommendation for documentation regarding the number analysis requirements for the specific global service.
-
-## **8.4 Evolution path to an international ITU-T E.164-number for global services**
-
-The development of a numbering plan for a global service should consider the possibility for the subscribers, who already have a number for the same comparable domestic service, to evolve their domestic subscriber number (SN) to the global subscriber number (GSN).
-
-It is assumed that ITU-T recognized global services would be location independent.
-
-If in the implementation of the global service there are duplicate numbering requests and there are no service specific resolution procedures, then the duplicate request procedures should be invoked, as defined in [ITU-T E.169], Application of Recommendation E.164 numbering plan for universal international numbers for international telecommunications services using country codes for global services.
-
-# **9 International ITU-T E.164-number for Networks**
-
-Principles, criteria and procedures for the assignment of international ITU-T E.164-numbers for international Networks may be found in [ITU-T E.164.1] and [ITU-T E.190].
-
-International ITU-T E.164-numbers used by Networks consist of three parts: a shared three-digit ITU-T E.164 country code for Networks, an identification code, and a subscriber number (see Figure 3). The maximum length of international ITU-T E.164-numbers used by Networks is fifteen (15) digits.
-
-## **9.1 Country code for Networks**
-
-These digits are the first three digits of international ITU-T E.164-numbers for Networks. A country code for Networks is a shared combination of three digits and is used in combination with the identification code to identify Networks.
-
-## **9.2 Identification code**
-
-An identification code (IC) is a combination of one to four digits used for identification of Networks. These digits follow the shared country code field within international ITU-T E.164-numbers for Networks.
-
-## **9.3 Subscriber numbers**
-
-Subscriber numbers are the remaining digits that follow the shared country code and the IC. The structure and functionality is determined by the operator. The maximum length of the subscriber number is 15 minus the total of the CC and IC digits. The minimum length of the subscriber number is:
-
-- nine digits with a one-digit IC;
-
-- eight digits with a two-digit IC;
-- seven digits with a three-digit IC;
-- six digits with a four-digit IC.
-
-Additionally, resources shorter in length than the required minimum number of digits are authorized following the CC + IC, on condition that the quantity of these resources is limited to 10% of the total capacity of the numbering resources for Networks determined by the operator.
-
-## 9.4 Digit analysis
-
-For calls utilizing the international ITU-T E.164-number for Networks, the maximum number of digits to be analysed is seven, which includes the three digits of the ITU-T E.164 country code, the identification code, and the initial significant digits (if any) of the subscriber number. A minimum of the 3-digit country code and IC must always be analysed to determine the appropriate routing and charging.
-
-# 10 International ITU-T E.164-number for groups of countries
-
-Principles, criteria and procedures for the assignment of international ITU-T E.164-numbers for groups of countries may be found in [ITU-T E.164.3] and [ITU-T E.190].
-
-International ITU-T E.164-numbers used by groups of countries consist of three fields: a shared three-digit ITU-T E.164 country code for groups of countries; a one-digit group identification code; and a subscriber number to a maximum length of eleven digits (see Figure 4). The maximum length of international ITU-T E.164-number used by groups of countries is 15 digits.
-
-## 10.1 Country code for groups of countries
-
-These are the first three digits of international ITU-T E.164-number for groups of countries. A country code for groups of countries is a shared (i.e., shared between GoCs) three-digit CC used in combination with a single-digit GIC to uniquely identify a group of countries.
-
-## 10.2 Group identification code
-
-A group identification code (GIC) is a single-digit code used to uniquely identify a group of countries. The GIC immediately follows the shared country code field within the international ITU-T E.164-number for groups of countries.
-
-## 10.3 Subscriber numbers
-
-Subscriber numbers (SN) are the digits (to a maximum of eleven) which follow the CC + GIC fields and are used to identify individual subscribers or a point where a service is provided with the GoC. The minimum length of the subscriber number is nine digits, although a maximum of 10% of the total capacity of the numbering resources following the CC + GIC determined by the GoC is authorized to be shorter than nine digits in length. The structure and functionality of subscriber numbers is determined by the GoC and are administered and managed by the group identification code administrator (GICA).
-
-## 10.4 Digit analysis
-
-The maximum number of digits to be analysed for the processing of calls to international ITU-T E.164-numbers for groups of countries is seven. This includes the CC field (three-digit) plus the GIC field (one-digit) plus the first three digits of the subscriber number (SN). A minimum of four digits (i.e., CC + GIC) must always be analysed to determine the appropriate routing and charging.
-
-# **11 International ITU-T E.164-numbering resources for Trials**
-
-An ITU-T E.164 country code (i.e., 991) has been allocated to enable the conduct of trials of new international public correspondence services. Additionally, a three-digit trial identification code (TIC) field will be used in conjunction with the shared country code to uniquely designate trial numbers and participants. Details pertaining to the use of and the restrictions associated with this resource are contained in [ITU-T E.164.2].
-
-# **12 International prefix**
-
-It is recommended by ITU-T that national numbering plan administrators that have not yet introduced automatic international operation, or national numbering plan administrators and international operators that are, for various reasons, defining or revising their numbering plans, adopt an international prefix (a code for access to the international automatic network) composed of the two digits 00<sup>2</sup>.
-
-In accordance with [ITU-T E.123], the symbol "+" is recommended to indicate that an international prefix is required.
-
-# **13 Recommendation history**
-
-Recommendation ITU-T E.29, first issued in 1960 and subsequently revised. The first version was a renumbering of CCIF no. 26.
-
-Recommendation ITU-T E.161, first issued in 1964, was a renumbering of Recommendation ITU-T E.29. It was subsequently revised several times.
-
-Recommendation ITU-T E.163, first published in 1980, was the result of removing the number-related content from the 1976 version of Recommendation ITU-T E.161 and moving it to the new Recommendation ITU-T E.163.
-
-Recommendation ITU-T E.163 was withdrawn and its content merged with Recommendation ITU-T E.164 in 1991 (see below).
-
-Recommendation ITU-T E.164, first issued 1984.
-
-Recommendation ITU-T E.164, second issue 1988.
-
-Recommendation ITU-T E.164, third issue 1991 – merged with Recommendation ITU-T E.163
-
-Recommendation ITU-T E.164, fourth issue 1997 – incorporates Recommendations ITU-T E.160 and E.162.
-
-Recommendation ITU-T E.164, fifth issue 2005.
-
-Recommendation ITU-T E.164, sixth issue 2010.
-
----
-
-<sup>2</sup> Where there is a requirement for further discrimination between international operators and/or the different network services they provide, the method for accommodating this need is a national matter.
-
-# Annex A
-
-## Clarification and explanation of the structure and function of international ITU-T E.164-numbers
-
-(This annex forms an integral part of this Recommendation)
-
-## A.1 Scope
-
-**A.1.1** International ITU-T E.164-numbers are the basis for global addressing in fixed and mobile terminal networks. These numbering resources uniquely identify user-network interfaces, e.g., PSTN/ISDN, mobile terminals, and individuals utilizing specific global services, e.g., universal international freephone numbers (UIFNs). Most of the services/subscribers can be addressed directly, but in cases where indirect addressing is used, number translation is required, e.g., for UIFNs.
-
-**A.1.2** This annex provides clarification and explanation to the structure and functionality of international ITU-T E.164-numbers. These structures/functions are independent of the technical arrangement to record, charge or route the calls.
-
-## A.2 Structure
-
-**A.2.1** The international ITU-T E.164-number, which is the foundation of the hierarchy, consists of the country code plus the necessary additional elements (NDC + SN, GSN, IC + SN, or GIC+SN). The international ITU-T E.164-number exists only at the international level, i.e., the CC and GSN are combined to form a single dialling sequence.
-
-**A.2.2** In countries where NDC and SN are combined to form a single dialling sequence or where the NDC does not exist, the local and national levels are integrated and there is no difference between the subscriber number and the national (significant) number.
-
-**A.2.3** International ITU-T E.164-numbers have hierarchical structures as shown in Figure A.1.
-
-**A.2.4** When in the local level, typically the use of a national (trunk) prefix provides access to the national level, and the use of an international prefix provides access to the international level.
-
-**A.2.5** Numbers that only exist in the local, intraNetwork and/or national level are not considered international ITU-T E.164-numbers.
-
-## A.3 Number length
-
-### A.3.1 International ITU-T E.164-number for geographic areas
-
-**A.3.1.1** International ITU-T E.164-numbers for geographic areas have a maximum length of 15 digits.
-
-**A.3.1.2** The maximum length of national (significant) numbers is 15 digits minus the length of the country code.
-
-**A.3.1.3** The maximum length of subscriber numbers is 15 digits minus the length of the country code and the national destination code.
-
-![](60e9207be66a64332619bb4b667fe67b_img.jpg)
-
-**International ITU-T E.164-number for geographic areas**
-
-Local level SN  
-Subscriber number
-
-National level NDC SN  
-National (significant) number
-
-International level CC NDC SN
-
-**International ITU-T E.164-number for global services**
-
-International level CC GSN
-
-**International ITU-T E.164-number for Networks**
-
-IntraNetwork level SN
-
-International level CC IC SN
-
-**International ITU-T E.164-number for groups of countries**
-
-International level CC GIC SN
-
-E.164\_FA.1
-
-NDC National Destination Code  
- CC Country Code  
- IC Identification Code  
- SN Subscriber Number  
- GSN Global Subscriber Number  
- GIC Group Identification Code
-
-NOTE – IntraNetwork level is used when calling and called parties are within the same network.
-
-**Figure A.1 – Hierarchical structures of international ITU-T E.164-numbers**
-
-**A.3.2 International ITU-T E.164-number for global services**
-
-The maximum length of a global subscriber number is 12 digits, since the country code assigned to global services is always three digits in length.
-
-**A.3.3 International ITU-T E.164-number for Networks**
-
-The maximum length of the combined identification code and subscriber number is 12 digits, since the country code for Networks is always three digits in length.
-
-**A.3.4 International ITU-T E.164-number for groups of countries**
-
-The maximum length of a subscriber number is 11 digits since the country code for groups of countries is always three digits in length and the group identification code is fixed at one digit.
-
-16 **Rec. ITU-T E.164 (11/2010)**
-
-### A.3.5 Summary of number length
-
-Table A.1 summarizes the maximum number length on each level for the four categories of international ITU-T E.164-numbers.
-
-**Table A.1 – Maximum number length**
-
-| Level         | Geographic areas                           | Global services | Networks                                     | Groups of Countries |
-|---------------|--------------------------------------------|-----------------|----------------------------------------------|---------------------|
-| Local         | 15 minus<br>(number of digits in CC + NDC) | NA              | NA                                           | NA                  |
-| National      | 15 minus<br>(number of digits in CC)       | NA              | NA                                           | NA                  |
-| IntraNetwork  | NA                                         | NA              | 15 minus<br>(number of digits<br>in CC + IC) | NA                  |
-| International | 15                                         | 15              | 15                                           | 15                  |
-
-NA Not Applicable
-
-## A.4 Unique identification of international ITU-T E.164-number for geographic areas
-
-**A.4.1** An international ITU-T E.164-number for geographic areas uniquely identifies a subscriber within a geographical area locally, nationally and internationally, i.e., dialling the subscriber number locally, the national (significant) number nationally and the international ITU-T E.164-number internationally always provides identification of the same subscriber.
-
-**A.4.2** The national (significant) number provides unique identification of one subscriber irrespective of where the call is generated from within the country or geographical area characterized by CC.
-
-**A.4.3** The subscriber number provides unique identification of one subscriber irrespective of where the call is generated from within a local area identified by NDC, where applicable. The subscriber number is a complete number and, therefore, cannot be separated.
-
-**A.4.4** Use of prefixes to distinguish the national (significant) number and the international number from the subscriber number does not alter the uniqueness of international ITU-T E.164-numbers.
-
-## A.5 Unique identification of international ITU-T E.164-number for global services
-
-The international ITU-T E.164-number for global services uniquely identifies subscribers only at the international level. The international ITU-T E.164-number for global services is a complete number, and, therefore, cannot be separated.
-
-## A.6 Unique identification of international ITU-T E.164-number for Networks
-
-For illustrative purposes only, it is assumed that intraNetwork dialling is by subscriber number.
-
-**A.6.1** An international ITU-T E.164-number for Networks uniquely identifies a subscriber within a Network, and internationally, i.e., dialling the subscriber number and the international ITU-T E.164-number, always provides identification of the same subscriber.
-
-**A.6.2** The subscriber number provides unique identification of one subscriber irrespective of where the call is generated from within the Network identified by CC + IC. The subscriber number is a complete number and, therefore, cannot be separated.
-
-**A.6.3** Use of an international prefix to distinguish the subscriber number and the international ITU-T E.164-number for Networks does not alter the uniqueness of international ITU-T E.164-numbers.
-
-## **A.7 Unique identification of international ITU-T E.164-number for groups of countries**
-
-The international ITU-T E.164-number for groups of countries uniquely identifies subscribers only at the international level. The international number for groups of countries is a complete number, and, therefore, cannot be separated.
-
-## **A.8 Non-ITU-T E.164 numbers**
-
-**A.8.1** Any number for geographical areas, global services, networks or groups of countries which does not conform to the structure, length and uniqueness as defined in this annex or in the main body of this Recommendation is not an international ITU-T E.164-number.
-
-**A.8.2** Non-ITU-T E.164 numbers may not be passed across any network boundaries without a specific bilateral agreement.
-
-**A.8.3** Listed below are some examples of non-ITU-T E.164 numbers from the first category of numbers. These examples are not exhaustive.
-
-#### **A.8.3.1 Local special purpose numbers**
-
-For example, local special purpose numbers (LSPNs) are numbers with significantly fewer digits than subscriber numbers, and which are valid for a specific purpose only, within a limited part of the same NDC area.
-
-The LSPNs are part of a hierarchical structure with three levels as follows:
-
-- Local level: LSPN.
-- IntraNetwork level: NDC + LSPN.
-- International level: CC + NDC + LSPN.
-
-Since LSPNs are significantly shorter than the subscriber numbers, they are within the limits of Table A.1.
-
-If LSPNs and NDC + LSPN terminate at the same service, then LSPN would be an international ITU-T E.164-number, but this is not the case in this example. In our example the LSPN terminates at, for instance, two different services within the NDC area, depending upon from where the calling user is located. LSPN and NDC + LSPN are ambiguous and therefore not international ITU-T E.164-numbers.
-
-#### **A.8.3.2 International special purpose numbers used nationally**
-
-In this example, the international special purpose numbers (ISPNs) are numbers with significantly fewer digits than ordinary subscriber numbers, and which only exist in an international format within the country which provides it. The digits of ISPN are identical to the leading digits of one or more subscriber numbers.
-
-Nationally, the ISPNs exist only at the international level as follows:
-
-- International level: CC + NDC + ISPN.
-
-Since ISPNs are significantly shorter than the subscriber numbers, they are within the limits of Table A.1.
-
-Nationally the CC + NDC + ISPN could terminate at a service center. As the digits of ISPN are identical to the leading digits of a subscriber number, all incoming international calls to the service center will fail because the CC + NDC + ISPN and the leading digits of CC + NDC + SN are ambiguous, and therefore not international ITU-T E.164-numbers.
-
-#### A.8.3.3 Network-specific numbers
-
-In this example, network-specific numbers are numbers that belong to subscribers connected to one network operator in a country with more than one operator, but where the network operator demands that the calling user dials some additional digits.
-
-The network-specific numbers have a hierarchical structure with 3 levels as follows:
-
-- Local level: SN.
-- National level: NDC + SN.
-- International level: CC + AD + NDC + SN (see Note).
-
-NOTE – ADs (additional digits) are the network operator identification digits that would have to be added by the calling users abroad to remove ambiguity and reach a particular subscriber in specific national network.
-
-The network-specific number does not fit in the hierarchical structure because it consists of more than the country code plus the national (significant) number. AD is not part of the national (significant) number, but may be part of a national prefix used to distinguish the national (significant) numbers from the subscriber numbers.
-
-The numbers are not unique because NDC + SN and CC + NDC + SN lead to two different subscribers.
-
-Network-specific numbers that are manipulated in this way are not international ITU-T E.164-numbers.
-
-#### A.8.3.4 National (significant) numbers with excessive length
-
-In this example, the national (significant) numbers (NDC + SN) as used nationally have differing lengths, and the longest national (significant) numbers violate the maximum given in Table A.1.
-
-The numbers have a hierarchical structure as follows. The structure is independent of the number length.
-
-- Local level: SN.
-- National level: NDC + SN.
-- International level: CC + NDC + SN.
-
-Some of the national (significant) numbers (NDC + SN) and international numbers (CC + NDC + SN) are longer than the maximum given in Table A.1. These numbers are not international ITU-T E.164-numbers. The most significant part of the national (significant) numbers, truncated to the limits given in Table A.1, are international ITU-T E.164-numbers provided that they are unique.
-
-# Annex B
-
-## Application of international ITU-T E.164-numbers for ISDN
-
-(This annex forms an integral part of this Recommendation)
-
-## B.1 Scope
-
-This annex describes the application of international ITU-T E.164-numbers to ISDN numbering and addressing. Additional numbering and addressing requirements are covered in separate Recommendations, e.g., B-ISDN is contained in [ITU-T E.191].
-
-## B.2 ISDN numbers
-
-Numbering for ISDN is an integral part of the international ITU-T E.164-numbering plan.
-
-The ISDN number is an application of international ITU-T E.164-numbering for geographic areas and for international networks, to the ISDN user-network interface/network termination.
-
-## B.3 Addressing
-
-### B.3.1 Identification
-
-Identification within a subscriber's installation of a point beyond the ISDN boundary requires the transfer of address information from the public network to the subscriber's equipment. Two cases can apply:
-
-- identification by an ISDN number;
-- identification by an ISDN number plus additional address information.
-
-### B.3.2 Addressing by an ISDN number
-
-When selecting a destination in the subscriber installation, digits forming the end of the ISDN subscriber number are transferred to the called subscriber's installation as a partial number (see Figure B.1). The number of digits used depends upon the requirements of the called subscriber's equipment and the capacity of the numbering plan used.
-
-In instances where a partial number is utilized, e.g., network termination 2 (NT2), the number will be used in the context of the direct-dialling-in supplementary service.
-
-If the subscriber's installation consists of terminal equipment only, the transferred digits will be used in the context of the multiple-subscriber-number supplementary service.
-
-![Diagram of ISDN number structure showing NDC, N(S)N, and SA components.](b0d322b2e75c75e1f21bfc0df841beaa_img.jpg)
-
-The diagram illustrates the structure of an ISDN number. At the top, a bracket labeled 'N(S)N' spans over two boxes: 'NDC' and 'S N'. Below the 'S N' box, a bracket labeled 'Partial number' is shown. To the right of the 'S N' box is a box labeled 'SA'. Below the 'SA' box, a bracket labeled 'Combined partial number and sub-address' spans over the 'S N' and 'SA' boxes. The text 'E.164\_FB.1' is located to the right of the 'Combined partial number and sub-address' bracket.
-
-Diagram of ISDN number structure showing NDC, N(S)N, and SA components.
-
-NDC National Destination Code (optional)  
-N(S)N National (Significant) Number  
-SA Sub-Address  
-SN Subscriber Number
-
-NOTE – The multiple-subscriber-number is not covered in the diagram.
-
-Figure B.1 – Addressing by an ISDN number
-
-### **B.3.3 Sub-addressing (network address extension)**
-
-Sub-addressing provides an additional addressing capacity outside the ISDN numbering plan but constitutes an intrinsic part of the ISDN addressing capabilities. The sub-address is a sequence of digits, following the ISDN number. The maximum length should be 20 octets (40 digits). As shown in Figure B.1, the sub-address may follow the ISDN number and form the ISDN address, which is transferred to the equipment at the subscriber's premises.
-
-When required, the sub-address is sent by the calling party within the call set-up procedure and is passed transparently through the network as a separate entity from both the ISDN number and user-to-user information. Sub-address information is not required to be processed within the public network.
-
-### **B.3.4 Combination of addressing and sub-addressing**
-
-Sub-addressing may be used separately or in combination with a partial number (see Figure B.1).
-
-## **B.4 Dialling procedures**
-
-**B.4.1** The subscriber dialling procedures for local, national and international calls shall be in accordance with clause 7. However, subscriber's control procedures for supplementary services is defined in [ITU-T E.131] (for Europe, also see [ETSI ETS 300 738] and [ETSI TS 001 907]) or in separate Recommendations for each service.
-
-**B.4.2** ISDN subscribers will always be called by the same subscriber number, irrespective of where in the public network the call originates. For calls in the same numbering area or local network, the subscriber number alone is dialled. For national calls between numbering areas or local networks, the subscriber number may be preceded by the national prefix and the national destination code.
-
-**B.4.3** The addressing procedures for calls using sub-addressing are described in clause B.3.
-
-## **B.5 Network identification**
-
-### **B.5.1 Geographic areas**
-
-In countries served by more than one ISDN and/or public switched telephone network (PSTN), the network identification of each is a national matter.
-
-Network identification within the national (significant) number shall be such that:
-
-- in a country all destination ISDN and PSTN networks shall operate under a single country code;
-- the international ITU-T E.164-number maximum length of 15 digits shall not be exceeded, nor shall it be necessary for the number of digits for number analysis to exceed that specified in clause 7.5;
-- provision of network identification is not mandatory for countries using a single integrated numbering plan arrangement for their ISDNs and PSTNs.
-
-### **B.5.2 Networks**
-
-In all cases when Network codes are assigned, they are supplemented with identification codes (ICs) which uniquely identify each international Network.
-
-Digit analysis of the CC + IC provides the required network identification.
-
-## **B.6 Service parameters**
-
-The ISDN number by itself will not identify the particular nature of the service, which is derived from particular signalling parameters that are not part of the numbering plan. For example, for ISDN calls, in addition to a number and possible prefix, there is a requirement to provide a choice of bearer capability in the signalling protocol. One number can therefore facilitate access to more than one service.
-
-## **B.7 Calling/connected line identity**
-
-Calling/connected line identity (CLI/COLI) is address information that is passed across the network to provide supplementary services such as calling (or connected) line identification presentation. The format of the CLI and COLI for international calls should be the full international ITU-T E.164-number, i.e., country code (CC), national destination code (NDC) and subscriber number (SN). No other information, such as prefixes or symbols (e.g., "+"), should be included, although a sub-address may be associated with the CLI/COLI. However, in a country where network-specific numbers are utilized for identifying customers or network services, it remains a national matter. When implemented, the NPI (numbering plan identifier) TON (type of number) mechanism should define the numbering status of the calling/connected line. The authorization to pass CLI/COLI across an international boundary is a national matter.
-
-![Timeline of E.164 evolution history from 1956 to 2010, showing the progression from CCIF and CCITT recommendations to ITU-T standards. The timeline includes color-coded books (Red, Blue, White, Green, Orange, Yellow) and key milestones like the ISDN era starting in 1996.](4cec89a753c447a050c0171c274f2acb_img.jpg)
-
-**Former Recommendations N° 26 bis and N° 26 ter of volume VI of CCIF green book**
-
-**Timeline:**
-
-- 1956:** 1<sup>st</sup> PA
-- 1958:** 10 E.29
-- 1960:** 2.0 E.29/Q.11 (II<sup>nd</sup> PA, RED BOOK)
-- 1964:** 30 E.29/Q.11 (III<sup>rd</sup> PA, BLUE BOOK)
-- 1968:** 40 E.161/Q.11 (IV<sup>th</sup> PA, WHITE BOOK)
-- 1972:** 50 E.161/Q.11 (V<sup>th</sup> PA, GREEN BOOK)
-- 1976:** 80 E.161/Q.11 (VI<sup>th</sup> PA, ORANGE BOOK)
-- 1980:** 7.0 E.161/Q.11 (Dials and keypads) / 7.0 E.163/Q.11 bis (Numbering plan for telephone service)
-- 1984:** 8.0 E.161/Q.11 (VIII<sup>th</sup> PA, RED BOOK) / 8.0 E.163/Q.11 bis / 1.0 E.164/I.331 (Numbering plan for ISDN era)
-- 1988:** 9.0 E.161 (IX<sup>th</sup> PA, BLUE BOOK) / 9.0 E.163/Q.11 / 2.0 E.164/I.331 / Q.11 bis
-- 1991:** 3.0 E.164/I.331
-- 1993:** 10.0 E.161 (WTSC)
-- 1995:** 11.0 E.161 (WTSC 96)
-- 1996-12-31 23:59 UTC:** ISDN era start (Time T)
-- 1997:** 4.0 E.164 (Public Telecom. numbering plan)
-- 2001:** 12.0 E.161 (WTSA 00)
-- 2005:** 5.0 E.164 (WTSA 04)
-- 2010:** 6.0 E.164 (WTSA 08)
-
-Timeline of E.164 evolution history from 1956 to 2010, showing the progression from CCIF and CCITT recommendations to ITU-T standards. The timeline includes color-coded books (Red, Blue, White, Green, Orange, Yellow) and key milestones like the ISDN era starting in 1996.
-
-E.164(10)\_Flast
-
-E.164 evolution history
-
-
-
-
-
-# SERIES OF ITU-T RECOMMENDATIONS
-
-|                 |                                                                                             |
-|-----------------|---------------------------------------------------------------------------------------------|
-| Series A        | Organization of the work of ITU-T                                                           |
-| Series D        | General tariff principles                                                                   |
-| <b>Series E</b> | <b>Overall network operation, telephone service, service operation and human factors</b>    |
-| 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, sound 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        | Telecommunication management, including TMN and network maintenance                         |
-| Series N        | Maintenance: international sound programme and television transmission circuits             |
-| Series O        | Specifications of measuring equipment                                                       |
-| Series P        | Terminals and subjective and objective assessment methods                                   |
-| Series Q        | Switching and signalling                                                                    |
-| Series R        | Telegraph transmission                                                                      |
-| 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, open system communications and security                                      |
-| Series Y        | Global information infrastructure, Internet protocol aspects and next-generation networks   |
-| Series Z        | Languages and general software aspects for telecommunication systems                        |