operation & numbering 1 telecommunication standardization bureau operation and numbering...

1 Telecommunication Standardization Bureau

Operation & Numbering

Operation and

NumberingPresented by

Geng-Sheng LIEmail: [email protected]



Introduction

Another aspect of TSB is that it is also responsible for the application of ITU-T Recommendations on Operation and Numbering issues, and to make known these Recommendations to Administrations and Telecom Operators:

• Collects and Disseminates Information• Publishes the Operational Bulletin• Maintain an ITU-T website on

numbering• Assigns Codes and Numbers• Acts as Registrar for Global Numbers



Responsibilities

To collect and disseminate information from Administrations/ROAs according to Article 8 of ITR (WATTC-88) and Article No. 202 of the ITU Convention (PP-98); using:

• Circular Letters• Questionnaires• Correspondence



ITU Operational Bulletin

• Favoured medium for more than 40 years

• Issued twice a month (1st and 15th each month) in 3 languages, 24 issues per year.

• Contains information about:

Operational Bulletin:

•Telegram/Telex•Telephone service•Mobile Phones•Data•Changes in Administrations•Maritime Mobile Service•Other information, etc.

http://www.itu.int/itu-t/bulletin/index.html



Subscription to ITU Operational Bulletin

Five media to obtain the Bulletin:

• Printed version (delivered by airmail);

• Version delivered by fax;

• Version delivered by E-mail;

• Electronic version accessible online;

• Electronic version of single issue via ITU electronic bookshop



Subscription fee of ITU Operational Bulletin

The yearly subscription fee (24 issues, included annexes):

• Catalogue price: 385 CHF

• Member Stats and Sector Member:330 CHF

• Least developed countries: 77 CHF



ITU Circular Telegrams

… were used for important or urgent communications to Member States. Now replaced by other means, such as Facsimile etc.



ITU-T Website (1)

A homepage has been created for ITU Operational Bulletin:

www.itu.int/itu-t/bulletin/index.htmlIt includes:ITU Operational BulletinLists annexed to the ITU Operational

BulletinHow to order ITU Operational Bulletin

– Publication Notice



ITU-T Website (2)

• A homepage has also been createdhttp://www.itu.int/itu-t/inr/nnp/ which assembles information on National Numbering Plans for all countries

• Administrations are requested to provide either a link to their numbering Websites or the text to be posted on TSB Website

• New Rec. E.129 gives some examples of how the format of the numbering plan should be presented

• A Notification Service is also available to notify you of any changes as they occur



Telephone Service

• Geographical country code • Network country code• Group of countries• Trial country code• Global Services country code

ITU-T Recommendation E. 164 Assigned country codesList of E.164 Country Codes annexed to O.B. No. 763 (1.V.2002)



Telephone Service

• Geographical country code: Botswana = +267

• Network country code: Global International ATM network (Telekom Malaysia) Network = +882 31

• Group of countries: European Telephony Numbering Space = +388 3

• Trial country code: Neustar for ENUM trial = +991 001

• Global Services country code: Universal International Freephone Number = +800

For example:



Telephone Service

Notification of National Numbering Changes: ITU-T Recommendation E.164, paragraph 7.4.2 asks Administrations:

• to advise TSB of NNP changes 2 years in advance

• to use the 0 as national prefix

• to use 00 as international prefix

• To have a maximum of 15 digits



Telephone Service

Notation of national and international telephone numbers, etc.

• See ITU-T Recommendation E.123

• Symbols to be used in letter heads or business cardse.g. Tel: +267 65 0300

Fax: +267 35 7976 Mobile: E-mail: Web:



Telephone Service

List of Various tones used in national networks annexed to O.B. No. 665 (1.IV.1998)(Rec. E.180 and E.182)

• Dial Tone• Ringing Tone• Busy Tone• Congestion Tone• Special Information Tone• Call waiting Tone• Pay Tone



Telephone Service

List of Mobile access codes/numbers annexed to O.B. 765 (1.VI.2002)

• Different charges for fixed and mobile network

• Non-acceptance of collect calls to mobile terminals



Telephone Service

List of Dialling Procedures Annexed to O.B. No. 759(1.III.2002)

• Country Codes• Prefixes• National (significant)

numbers



Issuer Identifier Numbers (IIN)

• See ITU-T Recommendation E.118 - Based on ISO-7812

• TSB acts as Registrar, List of IIN annexed to O.B. No.757 (1.II.2002)

• Used for Subscriber Identification Module (SIM) cards. Format = 89 + E.164 country code + two or three digits, e.g. Botswana: 89 267 01

• A single IIN is assigned to Card Issuers from the ITU’s block of “89”



Signalling Area Network Code (SANC)

• International Signalling Point Code (ISPC) is used to identify a signalling point within international signalling system No.7 network

• ISPC = 14-bit binary code• SANC = combination of NML and K-D• CBA identifies a specific signalling

point which, when combined with SANC, = 14-bit ISPC

• Administrations responsible for allocation of ISPCs: Rec. Q.708



SANC/ISPC

T11105130-99

N M L K J I H G F E D C B A

3 bits 8 bits 3 bits

Signalling area network code (SANC)Signalling point

identification

International signalling point code (ISPC)

List of SANC annexed to O.B. No. 767 (1.VII.2002)

List of ISPC annexed to O.B. No.761 (1.IV.2002)

Botswana: 6-104

Zambia: 6-090-0 (Lusaka Gateway)



Data Country or Geographical Area Code

• Public Data Networks – See Rec. X.121• Data Country Codes (DCC) = 3 digits:

allocated by TSB• Data network Identification Code

(DNIC) = DCC + 1 digit network code: allocated by each Administration

• List of DCC and List of DNIC annexed to O.B. No. 720 (15.VII.2000) and O.B. No. 746 (15.VIII.2001), e.g. Gambia 607 0 GAMNET



Mobile Country Codes(Rec. E.212)

Lists annexed to the O. B. No. 741 (1.VI.2001) See ITU-T Rec. E.212

Non-diallable numbers Used to identify Mobile Country

Code (MCC) and its networks MCC format = 3 digits – assigned by TSB, e.g. Botswana=652 Mobile network Codes (MNC) = 2

digits after MCC – assigned by Administrations, notified to TSB,

List No. 1 published in O.B. No. 768 of 15.VII.2002)



ITU Carrier CodesList is only available in electronic version:

http://www.itu.int/itu-t/inr/icc/index.html

• A Carrier is any operating company that services/maintains international/domestic leased circuits, switched circuits, digital blocks and so on. • See Rec. M.1400 and (see TSB Circular 115 of 2 July 2002)• ICC = Maximum 6 alphanumeric characters, e.g. Botswana: BTC=Botswana Telecom Corp.



Administration Management Domain Name (ADMD)

List annexed to the O. B. No.725 (30.IX.2000)

•See Recommendation F.400/X.400: Message Handling Service (MHS)• Possible for more than one ADMD per country •Format: e.g. G=robert (given name; S=ryan (surname); O=ibm (organization); A=ibm400 (administration domain name)C=ie (country code ISO 3166)



Telegram and Telex Services

Lists annexed to the O. B. Nos.669; 693 and 764

• See Rec. F.1; F.31; F.68 and F.69• 5-letter code groups for international public telegram service (e.g. WALPU = referring to your…….)• Telegram Destination Indicators = 4 letters (first two-letter: network code; the 3rd and 4th letters: office code) e.g. BDGA, BD=BTC – Botswana Telecom Corpo.; GA=Gaborone• Tele Destination Codes (TDC) and Telex

network Identifier codes (TNIC) e.g. TDC=962 TNIC=BD



International Network Identification Codes

Assigned to ATM and Frame Relay Networks• See Recommendations E.164

and X.125• Code = E.164 country code followed by national network identifier (max. 8 digits) • Codes identifying networks are

required for use within Frame Relay and ATM signalling protocols



Country and Area Codes for Non-Standard facilities in Telematics Services

• See Rec. T.35 for the procedures of code allocation

• Unique code allocated to each provider: 3 parts

• Code consists of 8 bits from b1to b8 e.g.

Botswana: 0001 0101

1. Country code

2. Terminal provider code

3. Terminal provider orientated code (defined by provider)

List annexed to O.B. No. 766 15.VI.20020



Bureaufx TableTable is only available in electronic version:

http://www.itu.int/itu-t/inr/bureaufax/index.html

• See Rec. F.170• International facsimile service

exchange between public bureaux

• Contains information required for routing traffic and operational aspects of service offered

• Information posted on Website



Suspension of Services

According to Article 35 of the ITU Constitution and Article 7 of ITR, Administrations must inform the ITU about:

• Suspension and / or interruption of telecommunication services

• Restriction in telecommunication services, such as Call-Back, Collect Call, and so on



Miscellaneous

The following information is also published in O.B.:

• Public Holidays• Legal Time Changes (summer

and winter times or daylight saving time)

• Changes in Administrations/ROAs

• Privileged Communications



Global Services

• Universal International Freephone Number – UIFN

• Universal International Shared Cost Number – UISCN

• Universal International Premium Rate Number – UIPRN

• Universal Personal Telecommunication – UPT

• ITU International Network Designator Address – ITU IND AESA



UIFN

• See ITU-T Recommendations E.152 and E.169

• Allows IFS (International Freephone Service) callers in other countries to call the IFS customer free of charge

• All charges paid by IFS customer• Format = +800 XXXX XXXX

See O.B. Nos. 628 & 718



UISCN

• See ITU-T Recommendations E.154 and E.169.3

• Allows ISCS (International Shared Cost Service) callers in other countries to call an ISCS customer at a rate equivalent to the national call charge in country of origin

• All other charges paid by ISCS customer

• Format = +808 XXXX XXXX

See O.B. Nos. 732 & 734



UIPRN

• See ITU-T Recommendations E.155 and E.169.2

• Issued for IPRS (International Premium Rate Service), enabling a wide range of products offered by information service providers in one country to be made available to callers in another country

• Format = +979 Y XXXX XXXX• Y = charging indicator (CI)• Only CIs 1,3,5 and 9 are assigned • Categories of CIs = high, medium, low

and special

See O.B. Nos. 729 & 732



UPT

• See ITU-T Recommendation E.168• Introduces the concept of personal

mobility across networks• Includes ISDN, PSTN, PLMN and

PSPDN amongst others• Format is likely to be +878 XX….

(still under study)



ITU IND AESA

• See ITU-T Recommendation E.191• Established by the ITU for service

providers of ATM services• Enables an ATM addressing system to

be implemented for public ATM services that may not be offered internationally

• ITU proposes that all ASPs use this as the preferred method of B-ISDN addressing

See O.B. Nos. 736 & 746



ITU IND AESA Format

IDP

IDI

HO-DSP

T0208690-01

SEL

DSP

ESIAFI ASPIND

The ITU IND AESA format uses the individual AFI 77



Summary

• Codes / numbers - as already mentioned

• Notification Forms to be sent to TSB

• Procedures for reservation of Global Numbers

• E.164 National Numbering Plan

http:www.itu.int/itu-t/inr/index.html

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