Operation &
Numbering
Operation
and
Numbering
Presented by
Geng-Sheng LI
Email: geng-sheng.li@itu.int
Telecommunication Standardization Bureau
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Introduction
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Responsibilities
Operation &
Numbering
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
Telecommunication Standardization Bureau
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ITU Operational Bulletin
Operation &
Numbering
• 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
Telecommunication Standardization Bureau
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Operation &
Numbering
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
Telecommunication Standardization Bureau
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Operation &
Numbering
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
Telecommunication Standardization Bureau
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ITU Circular Telegrams
Operation &
Numbering
… were used for important or
urgent communications to
Member States. Now
replaced by other means,
such as Facsimile etc.
Telecommunication Standardization Bureau
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ITU-T Website (1)
Operation &
Numbering
A homepage has been created for ITU
Operational Bulletin:
www.itu.int/itu-t/bulletin/index.html
It includes:
 ITU Operational Bulletin
 Lists annexed to the ITU Operational
Bulletin
 How to order ITU Operational Bulletin
– Publication Notice
Telecommunication Standardization Bureau
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ITU-T Website (2)
Operation &
Numbering
• A homepage has also been created
http://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
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
ITU-T Recommendation E. 164 Assigned
country codes
List of E.164 Country Codes annexed to O.B.
No. 763 (1.V.2002)
• Geographical country code
• Network country code
• Group of countries
• Trial country code
• Global Services country code
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
For example:
• 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
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
Notation of national and
international telephone
numbers, etc.
• See ITU-T Recommendation E.123
• Symbols to be used in letter heads
or business cards
e.g. Tel: +267 65 0300
Fax: +267 35 7976
Mobile:
E-mail:
Web:
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Telephone Service
Operation &
Numbering
List of Dialling Procedures
Annexed to O.B. No. 759
(1.III.2002)
• Country Codes
• Prefixes
• National (significant)
numbers
Telecommunication Standardization Bureau
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Operation &
Numbering
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”
Telecommunication Standardization Bureau
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Operation &
Numbering
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
Telecommunication Standardization Bureau
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SANC/ISPC
Operation &
Numbering
List of SANC annexed to O.B. No. 767 (1.VII.2002)
List of ISPC annexed to O.B. No.761 (1.IV.2002)
N ML K J I H G F E D CBA
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Botswana: 6-104
T
1
1
1
0
5
Zambia: 6-090-0 (Lusaka
Gateway)
Telecommunication Standardization Bureau
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Data Country or Geographical
Area Code
Operation &
Numbering
• 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
Telecommunication Standardization Bureau
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Mobile Country Codes
(Rec. E.212)
Operation &
Numbering
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)
Telecommunication Standardization Bureau
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ITU Carrier Codes
Operation &
Numbering
List 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.
Telecommunication Standardization Bureau
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Operation &
Numbering
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)
Telecommunication Standardization Bureau
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Operation &
Numbering
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
Telecommunication Standardization Bureau
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Operation &
Numbering
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
Telecommunication Standardization Bureau
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Operation &
Numbering
Country and Area
Codes for NonStandard facilities in
Telematics Services
List annexed to O.B. No. 766 15.VI.20020
•
•
•
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.
1.
Country code
2.
Terminal
provider code
3.
Terminal
provider
orientated code
(defined by
provider)
Botswana: 0001 0101
Telecommunication Standardization Bureau
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Bureaufx Table
Table is only available in electronic version:
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Suspension of Services
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Miscellaneous
Operation &
Numbering
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
Telecommunication Standardization Bureau
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Global Services
Operation &
Numbering
• 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
Telecommunication Standardization Bureau
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UIFN
Operation &
Numbering
See O.B. Nos. 628 & 718
• 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
Telecommunication Standardization Bureau
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UISCN
Operation &
Numbering
See O.B. Nos. 732 & 734
• 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
Telecommunication Standardization Bureau
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UIPRN
Operation &
Numbering
See O.B. Nos. 729 & 732
• 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
Telecommunication Standardization Bureau
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UPT
Operation &
Numbering
• 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)
Telecommunication Standardization Bureau
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ITU IND AESA
Operation &
Numbering
See O.B. Nos. 736 & 746
• 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
Telecommunication Standardization Bureau
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ITU IND AESA Format
Operation &
Numbering
S
P
A
F
I A
N
I
D
H
O
D
S
P
E
S
I
S
E
L
D
I
I
D
I
P
D
S
P
1
0
9
6
8
2
T
The ITU IND AESA format uses the individual AFI 77
Telecommunication Standardization Bureau
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Summary
Operation &
Numbering
• 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
Telecommunication Standardization Bureau
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