I.S. ETS 300 523:1995

Foreword
1 Introduction
  1.1 Scope
  1.2 Normative references
  1.3 Definitions and abbreviations
  1.4 General comments to references
  1.5 General note on bitordering
2 Identification of mobile subscribers
  2.1 General
  2.2 Composition of IMSI
  2.3 Allocation principles
  2.4 Structure of TMSI
  2.5 Structure of LMSI
3 Numbering plan for mobile stations
  3.1 General
  3.2 Numbering plan requirements
  3.3 Structure of mobile station international
      PSTN/ISDN number (MSISDN)
  3.4 Mobile Station Roaming Number (MSRN) for
      PSTN/ISDN routing
  3.5 Structure of Mobile Station International
      Data Number
  3.6 Handover Number
4 Identification of location areas and base stations
  4.1 Composition of the Location Area Identification
      (LAI)
  4.2 Base station identification
  4.3 Regional Subscription Zone Identity (RSZI)
  4.4 Location Number
5 Identification of MSCs and location registers
  5.1 Identification for routing purpose
  5.2 Identification of HLR for HLR restoration
      application
6 International mobile station equipment identity
  and Software Version Number
  6.1 General
  6.2 Composition of IMEI and IMEISV
  6.3 Allocation principles
Annex A (informative): Colour Codes
  A.1 Utilisation of the BSIC
  A.2 Guidance for planning
  A.3 Example of PLMN Colour Codes (NCCs) for the
      European region
History

Specifies: a) an identification plan for mobile subscriber 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.