ETSI TR 103 453 V1.1.1 (2017-12)

Network Technologies (NTECH); Impact of alphanumeric user identifiers on interconnection scenarios

DTR/NTECH-00037

General Information

• Status: Published
• Publication Date: 06-Dec-2017
• Technical Committee: NTECH - Network Technologies
• Current Stage: 12 - Completion
• Due Date: 25-Dec-2017
• Completion Date: 07-Dec-2017

Standards Content (Sample)

ETSI TR 103 453 V1.1.1 (2017-12)






TECHNICAL REPORT
Network Technologies (NTECH);
Impact of alphanumeric user identifiers
on interconnection scenarios

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2 ETSI TR 103 453 V1.1.1 (2017-12)



Reference
DTR/NTECH-00037
Keywords
identification, interconnection
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3 ETSI TR 103 453 V1.1.1 (2017-12)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definitions and abbreviations . 5
3.1 Definitions . 5
3.2 Abbreviations . 6
4 Background of the present document . 6
5 Actual example . 7
5.1 Categorization of services influencing the telephone number . 7
5.2 An example of the Service influencing the telephone number . 7
6 Analysis of the mapping of the Internet domain names to E.164 numbers . 8
6.1 Features of numbers influenced by the mapping . 8
6.2 Assignment of numbers and validation . 9
6.2.1 The Japanese case . 9
6.2.2 Alternative ways . 9
7 Conclusion . 10
History . 11


ETSI

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4 ETSI TR 103 453 V1.1.1 (2017-12)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
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ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Network Technologies (NTECH).
Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
As the technology improves, various kinds of telecommunication services which might change the way of using
telephone numbers might appear. For example, in Japan call transfer services or call transfer like services are introduced
in the telecommunication market. They are quite different from the traditional "call forwarding service" or "call transfer
services" in PSTN network. They offer consumers different ways to reach the destination when treating a call by using
Internet and VoIP without a direct VoIP interconnection for interworking and service interoperability. Also in these
different scenarios the unique significance of public numbering and its geographic characteristics, when present, should
be guaranteed.
It has to be underlined that in general the integrity of public E.164 numbering should continue to be guaranteed by
national and international regulatory measures (such as National Numbering Plans, regional Telecommunications
Regulatory Frameworks, Recommendations ITU-T like E.164 [i.1]).
In the environment of Internet and VoIP networks, Internet domain names can be used. In general, scenarios of
interworking between PSTN and VoIP/IP networks have been appearing and have been standardized by ETSI/3GPP. In
those scenarios mapping between Internet domain names and E.164 numbers are introduced and standardized, using
infrastructural and internal ENUM functionalities.
ETSI

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5 ETSI TR 103 453 V1.1.1 (2017-12)
1 Scope
The present document provides a technical report on interoperability and mapping of Internet domain names to E.164
numbers in order to allow interconnection between networks. The focus of the present of document is on the analysis of
the aforementioned mapping rather than on the analysis of the message flows for establishing the connectivity itself.
2 References
2.1 Normative references
Normative references are not applicable in the present document.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Recommendation ITU-T E.164 (2010): "The international public telecommunication numbering
plan".
[i.2] Recommendation ITU-T E.101 (2009): "Definitions of terms used for identifiers (names, numbers,
addresses and other identifiers) for public telecommunication services and networks in the E-series
Recommendation".
[i.3] Recommendation ITU-T I.252.1: "Call offering supplementary services: Call Transfer".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
E.164 number: A string of decimal digits that satisfies the three characteristics of structure, number length and
uniqueness specified in Recommendation ITU-T E.164 [i.1]. The number contains the information necessary to route
the call to the end user or to a point where a service is provided.
NOTE: Source Recommendation ITU-T E.101 [i.2].
identifier (ID): A series of digits, characters and symbols used to identify uniquely a subscriber, a user, a network
element, a function, a network entity, a service or an application. Identifiers can be used for registration or
authorization. They can be either public to all networks or private to a specific network (private IDs are normally not
d
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