Executive Summary ..................................................5
A General Issues ......................................................5
B Naming..................................................................5
C Addressing............................................................7
D.1 Mobile Network Codes and IMSIs....................8
D.2 IMEIs ................................................................8
D.3 Issuer Identifier Numbers...................................9
Glossary of terms ...................................................10
4.1 Introduction........................................................18
4.2 General naming .................................................18
4.2.1 Relationship of names to services and users...18
4.2.2 Information in names.......................................19
4.2.3 Service types supported on IP.........................20
4.2.4 Backwards compatibility ................................20
4.2.5 Human user aspects of names ..........................21
4.2.6 Directory services and search engines ............22
4.2.7 Related developments......................................23
4.3 Issues for UMTS ................................................26
4.3.1 Internal naming of ISPs - Access Point Names 26
4.3.2 External naming ...............................................26
4.3.3 E.164 issues.....................................................26
4.3.4 Internet name issues.........................................28
4.4 Summary of conclusions and issues....................29
4.4.1 Conclusions.....................................................29
4.4.2 General issues ................................................29
4.4.3 Issues for Operators ........................................29
4.4.4 Issues for Service providers ...........................30
4.4.5 Issues for manufacturers ..................................30
4.4.6 Issues for regulators.........................................30
5.1 Introduction.........................................................31
5.2 IP addresses .......................................................31
5.2.1 Use in UMTS...................................................31
5.2.2 Support of mobility..........................................32
5.2.3 Access to Internet service providers and Intranets ..33
5.2.4 NATs, Firewalls, security and the end-to-end paradigm..34
5.2.5 Choice of IP version ........................................34
5.2.6 Temporary or permanent assignment ...............40
5.3 Mobile Station Roaming Numbers (MSRNs)......41
5.4 Routing numbers for number portability..............41
5.5 Summary of conclusions and issues.....................41
6 Other identifiers ..................................................42
6.1 IMSIs and their Mobile Network Codes (MNCs)
42
6.1.1 IMSI structure and administration......................42
6.1.2 Demand for MNCs ............................................43
6.1.3 IMSI allocat44 6.2 IMEIs .................................44
6.3 Issuer Identifier Numbers (E.118)........................45
6.3.1 Backg round......................................................45
6.3.2 Use of IINs for UMTS ......................................46
6.3.3 Conclusion........................................................46
