SIST ETS 300 523 E2:2003

European digital cellular telecommunications system (Phase 2); Numbering, addressing and identification (GSM 03.03)

REASON FOR EDITION 2: The Software Version number has been introduced to identify the software version used by the Mobile Equipment. This identifier is now combined with the IMEI to form a new identity IMEISV.

Evropski digitalni celični telekomunikacijski sistem (faza 2) – Številčenje, naslavljanje in identifikacija (GSM 03.03)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 523 ed.2 (1995-03) - European digital cellular telecommunications system (Phase 2); Numbering, addressing and identification (GSM 03.03)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 523 E2:2003
01-december-2003
(YURSVNLGLJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHPID]D±âWHYLOþHQMH
QDVODYOMDQMHLQLGHQWLILNDFLMD*60
European digital cellular telecommunications system (Phase 2); Numbering, addressing
and identification (GSM 03.03)
Ta slovenski standard je istoveten z: ETS 300 523 Edition 2
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST ETS 300 523 E2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 523 E2:2003

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SIST ETS 300 523 E2:2003
EUROPEAN ETS 300 523
TELECOMMUNICATION March 1995
STANDARD Second Edition
Source: ETSI TC-SMG Reference: DE/SMG-030303P
ICS: 33.060.30
European digital cellular telecommunications system, Global System for Mobile communications
Key words:
(GSM)
European digital cellular telecommunications system (Phase 2);
Numbering, addressing and identification
(GSM 03.03)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

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ETS 300 523: March 1995 (GSM 03.03 version 4.9.0)
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 523: March 1995 (GSM 03.03 version 4.9.0)
Contents
Foreword .5
1 Introduction.7
1.1 Scope.7
1.2 Normative references .7
1.3 Definitons and abbreviations.8
1.4 General comments to references .8
1.5 Conventions on bitordering.8
2 Identification of mobile subscribers.8
2.1 General .8
2.2 Composition of IMSI .9
2.3 Allocation principles .9
2.4 Structure of TMSI.9
2.5 Structure of LMSI.10
3 Numbering plan for mobile stations.10
3.1 General .10
3.2 Numbering plan requirements .10
3.3 Structure of mobile station international PSTN/ISDN number (MSISDN) .11
3.4 Mobile Station Roaming Number (MSRN) for PSTN/ISDN routeing .11
3.5 Structure of Mobile Station International Data Number .12
3.6 Handover Number .12
4 Identification of location areas and base stations .12
4.1 Composition of the Location Area Identification (LAI).12
4.2 Base station identification .12
4.2.1 Cell Identity (CI) and Cell Global Identification (CGI) .12
4.2.2 Base Station Identify Code (BSIC) .13
4.3 Regional Subscription Zone Identity (RSZI).13
4.4 Location Number .14
5 Identification of MSCs and location registers .14
5.1 Identification for routing purpose .14
5.2 Identification of HLR for HLR restoration application.14
6 International mobile station equipment identity and software version number.14
6.1 General .14
6.2 Composition of IMEI and IMEISV .14
6.2.1 Composition of IMEI.14
6.2.2 Composition of IMEISV .15
6.3 Allocation principles .15
Annex A (informative): Colour Codes.16
A.1 Utilisation of the BSIC.16
A.2 Guidance for planning.16
A.3 Example of PLMN Colour Codes (NCCs) for the European region.17
History.18

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ETS 300 523: March 1995 (GSM 03.03 version 4.9.0)
Foreword
This European Telecommunication Standard (ETS) has been produced by the Special Mobile Group
(SMG) Technical Committee (TC) of the European Telecommunications Standards Institute (ETSI).
This ETS defines the plans and principles of numbering, addressing and identification within the European
digital cellular telecommunications system (Phase 2). This second edition of ETS 300 523 corresponds to
GSM Technical Specification (GSM-TS) GSM 03.03 version 4.9.0.
The specification from which this ETS has been derived was originally based on CEPT documentation,
hence the presentation of this ETS may not be entirely in accordance with the ETSI/PNE rules.
Reference is made within this ETS to GSM-TSs (NOTE).
NOTE: TC-SMG has produced documents which give the technical specifications for the
implementation of the European digital cellular telecommunications system.
Historically, these documents have been identified as GSM Technical Specifications
(GSM-TSs). These TSs may have subsequently become I-ETSs (Phase 1), or ETSs
(Phase 2), whilst others may become ETSI Technical Reports (ETRs). GSM-TSs are,
for editorial reasons, still referred to in GSM ETSs.

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ETS 300 523: March 1995 (GSM 03.03 version 4.9.0)
1 Introduction
1.1 Scope
This Technical Specification defines:
a) an identification plan for mobile subscribers in the GSM system;
b) principles of assigning telephone and ISDN numbers to mobile stations in the country of registration
of the mobile station;
c) principles of assigning mobile station roaming numbers to visiting mobile stations;
d) an identification plan for location areas and base stations in the GSM system;
e) an identification plan for MSCs and location registers in the GSM system;
f) principles of assigning international mobile equipment identities;
g) principles of assigning zones for regional subscription.
1.2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references, the
latest edition of the publication referred to applies.
[1] GSM 01.04 (ETR 100): "European digital cellular telecommunications system
(Phase 2); Abbreviations and acronyms".
[2] GSM 03.08 (ETS 300 526): "European digital cellular telecommunications
system (Phase 2); Organisation of subscriber data".
[3] GSM 03.20 (ETS 300 534): "European digital cellular telecommunications
system (Phase 2); Security related network functions".
[4] GSM 03.70 (ETS 300 541): "European digital cellular telecommunications
system (Phase 2); Routeing of calls to/from Public Data Networks (PDN)".
[5] GSM 04.08 (ETS 300 557): "European digital cellular telecommunications
system (Phase 2); Mobile radio interface layer 3 specification".
[6] GSM 09.03 (ETS 300 600): "European digital cellular telecommunications
system (Phase 2); Signalling requirements on interworking between the
Integrated Services Digital Network (ISDN) or Public Switched Telephone
Network (PSTN) and the Public Land Mobile Network (PLMN)".
[7] GSM 11.11 (ETS 300 608): "European digital cellular telecommunications
system (Phase 2); Specification of the Subscriber Identity Module - Mobile
Equipment (SIM - ME) interface".
[8] CCITT Recommendation E.164: "Numbering plan for the ISDN era".
[9] CCITT Recommendation E.212: "Identification plan for land mobile stations".
[10] CCITT Recommendation E.213: "Telephone and ISDN numbering plan for land
mobile stations in public land mobile networks (PLMN)".
[11] CCITT Recommendation X.121: "International numbering plan for public data
networks".

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1.3 Definitons and abbreviations
Abbreviations used in this specification are listed in GSM 01.04.
1.4 General comments to references
The identification plan for mobile subscribers defined below is that defined in CCITT Recommendation
E.212.
The ISDN numbering plan for mobile stations and the allocation of mobile station roaming numbers is that
defined in CCITT Recommendation E.213. Only one of the principles for allocating ISDN numbers is
proposed for GSM PLMNs. Only the method for allocating mobile station roaming numbers contained in
the main text of CCITT Recommendation E.213 is recommended for use in GSM PLMNs. If there is any
difference between this Technical Specification and the CCITT Recommendations, the former shall
prevail.
For terminology, see also CCITT Recommendations E.164 and X.121.
1.5 Conventions on bitordering
The following conventions hold for the coding of the different identities appearing in this Technical
Specification and in other GSM Technical Specifications if not indicated otherwise:
- the different parts of an identity are shown in the figures in order of significance;
- the most significant part of an identity is on the left part of the figure and the least significant on the
right.
When an identity appears in other Technical Specifications, the following conventions hold if not indicated
otherwise:
- digits are numbered by order of significance, with digit 1 being the most significant;
- bits are numbered by order of significance, with the lowest bit number corresponding to the least
significant bit.
2 Identification of mobile subscribers
2.1 General
A unique International Mobile Subscriber Identity (IMSI) shall be allocated to each mobile subscriber in the
GSM system.
NOTE: This IMSI is the concept referred to by CCITT as "International Mobile Station Identity".
In order to support the subscriber identity confidentiality service the VLRs may allocate a unique
Temporary Mobile Subscriber Identity (TMSI) to visiting mobile subscribers. The VLR must be capable of
correlating the IMSI of an MS and the current TMSI for that MS.
In order to speed up the search for subscriber data in the VLR a supplementary Local Mobile Station
Identity (LMSI) is defined.
The LMSI may be allocated by the VLR at location updating and is sent to the HLR together with the IMSI.
The HLR makes no use of it but includes it together with the IMSI in all messages sent to the VLR
concerning that MS.

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2.2 Composition of IMSI
IMSI is composed as shown in figure 1.
      Not more than 15 digits
‡<˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜>‡
  3 digits    2 digits
‡<˜˜˜˜˜˜˜˜˜˜˜>‡ ‡<˜˜˜˜˜˜˜˜>‡
˜˜˜˜˜˜˜˜˜˜˜˜˜¿ ˜˜˜˜˜˜˜˜˜˜¿ ˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜¿
‡  MCC   ‡ ‡  MNC  ‡ ‡    MSIN   ‡
˜˜˜˜˜˜˜˜˜˜˜˜˜ ˜˜˜˜˜˜˜˜˜˜ ˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜
               NMSI
        ‡<˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜>‡
            IMSI
‡<˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜˜>‡
Figure 1: Structure of IMSI
IMSI is composed of three parts:
i) Mobile Country Code (MCC) consisting of three digits. The MCC identifies uniquely the country of
domicile of the mobile subscriber;
ii) Mobile Network Code (MNC) consisting of two digits for GSM applications. The MNC identifies the
home GSM PLMN of the mobile subscriber;
iii) Mobile Subscriber Identification Number (MSIN) identifying the mobile subscriber within a GSM
PLMN.
The National Mobile Subscriber Identity (NMSI) consists of the Mobile Network Code and the Mobile
Subscriber Identification Number.
2.3 Allocation principles
IMSI shall consist of numerical characters (O through 9) only.
The overall number of digits in IMSI shall not exceed 15 digits.
The allocation of Mobile Country Codes (MCCs) is administered by the CCITT and is given in Annex A to
CCITT Blue Book Recommendation E.212.
The allocation of National Mobile Subscriber Identity (NMSI) is the responsibility of each administration.
If more than one GSM PLMN exist in a country, a unique Mobile Network Code should be assigned to
each of them.
The allocation of IMSIs should be such that not more than the digits MCC + MNC of the IMSI have to be
analysed in a foreign GSM PLMN for information transfer.
2.4 Structure of TMSI
Since the TMSI has only local significance (i.e. within the VLR and the area controlled by the VLR), the
structure and coding of it can be chosen by agreement between operator and manufacturer in order to
meet local needs.
The TMSI consists of 4 octets. It can be coded using a full hexadecimal representation.
In order to avoid double allocation of TMSIs after a restart of a VLR, some part of the TMSI may be
related to the time when it was allocated or contain a bit field which is changed when the VLR has
recovered from the restart.
The TMSI shall only be allocated in ciphered form. See also Technical Specification GSM 03.20.

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The newtwork shall not allocate a TMSI with all 32 bits equal to 1 (this is because the TMSI must be
stored in the SIM, and the SIM uses 4 octets with all bits equal to 1 for indicating that no valid TMSI is
available.
2.5 Structure of LMSI
The LMSI consists of 4 octets and may be allocated by the VLR.
3 Numbering plan for mobile stations
3.1 General
Below the structure of the numbers used by a subscriber of a fixed (or mobile) network for calling a mobile
station of a GSM PLMN is defined.
Also the structure of mobile station roaming numbers is defined.
One or more numbers of the ISDN numbering plan shall be assigned to a mobile station to be used for all
calls to that station.
There may be a need for Mobile Stations (MS) to have a X.121 number. Because the MS has to have in
any case a number from the ISDN numbering plan, the X.121 number will be in addition. Implications on
numbering interworking functions which may need to be provided by the PLMN (if the use of X.121
numbers is required) are indicated in Technical Specification GSM 03.70.
NOTE: For card operated stations the ISDN number should be assigned to the holder of the
card (personal number).
3.2 Numbering plan requirements
In principle, it should be possible for any subscriber of the ISDN or PSTN to call any mobile station in a
GSM PLMN. This implies that ISDN numbers for mobile stations should comply with the ISDN numbering
plan in each country.
The ISDN numbers of mobile stations should be composed in such a way that standard ISDN/PSTN
charging can be used for calls to mobile stations.
It should be possible for each administration to develop its own independent numbering plan for mobile
stations.
The numbering plan should not limit the possibility for mobile stations to roam among GSM PLMNs.
It should be possible to change the IMSI without changing the ISDN number allocated to a mobile station
and vice versa.
In principle, it should be possible for any subscriber of the CSPDN/PSPDN to call any Mobile Station (MS)
in a GSM PLMN. This implies that it may be necessary for an MS to have a X.121 number.

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3.3 Structure of mobile station internatio
...