SIST EN 301 161 V1.1.1:2005

SLOVENSKI STANDARD
01-april-2005
Upravljanje evropskega telefonskega številskega prostora (ETNS)
Management of the European Telephony Numbering Space (ETNS)
Ta slovenski standard je istoveten z: EN 301 161 Version 1.1.1
ICS:
33.040.01 Telekomunikacijski sistemi Telecommunication systems
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 301 161 V1.1.1 (1998-10)
European Standard (Telecommunications series)
Management of the European
Telephony Numbering Space (ETNS)

2 EN 301 161 V1.1.1 (1998-10)
Reference
DEN/NA-021413 (ar000ico.PDF)
Keywords
management, addressing
ETSI
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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 1998.
All rights reserved.
ETSI
3 EN 301 161 V1.1.1 (1998-10)
Contents
Intellectual Property Rights.4
Foreword .4
Introduction .4
1 Scope.5
2 References.5
2.1 Normative references. 5
2.2 Informative references . 5
3 Definitions and abbreviations .6
3.1 Definitions . 6
3.2 Abbreviations. 7
4 Reference model for the ETNS.8
4.1 Call-related part . 9
4.1.1 First leg: getting the routeing number . 9
4.1.2 Second leg: providing the ETNS service. 9
4.1.3 Service provision by the Serving network. 9
4.2 Management part . 10
4.2.1 European number assignment. 10
4.2.2 Routeing numbers (Rns) updating. 10
5 The European number (En).12
5.1 Requirements for European numbers. 12
5.2 Structure of European numbers. 12
5.3 European Service Identity (ESI) . 12
5.4 European Subscriber Number (ESN). 13
6 Evolution from ETNS to a global scheme .13
7 Management of the ETNS.14
7.1 Organizations involved in the management of ETNS . 14
7.2 Criteria for the establishment of an ESI. 14
8 ETNS numbering conventions .15
9 Distribution of routeing numbers.15
9.1 Centralized management approach . 15
9.2 Distributed management approach. 15
10 ETNS Service Provider (SP) portability .15
Annex A (informative): Information to file in a proposal for reservation.16
A.1 Preferred ESI.16
A.2 Description of service .16
A.3 Charging Information.16
A.4 Market Potential.16
A.5 Timescales.17
A.6 Other considerations .17
History.18
ETSI
4 EN 301 161 V1.1.1 (1998-10)
Intellectual Property Rights
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 SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect
of ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).
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 SR 000 314 (or the updates on the ETSI Web server)
which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Network
Aspects (NA).
National transposition dates
Date of adoption of this EN: 9 October 1998
Date of latest announcement of this EN (doa): 31 January 1999
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 July 1999
Date of withdrawal of any conflicting National Standard (dow): 31 July 1999
Introduction
ETSI, under a mandate from the CEU, has been requested to produce a standard for the number structure, possible
evolution of European numbers (Ens) towards a global scheme, and framework of functions regarding ETNS numbering
conventions. ETO has, on behalf of ECTRA for the CEU, produced proposals for the management of the ETNS, and
developed ETNS numbering conventions to be agreed by ECTRA. The studies made in ETSI and the standards
produced are a prerequisite to the necessary commercial agreements between the parties willing to participate in the
ETNS.
The present document is based on the results of the ETSI studies on the topic, based on the prime requirement of the
ETNS which is the ability to introduce services in an open competitive environment.
ECTRA having decided in November 1996 to base the ETNS on Country Code (CC) 388 (see note), this numbering
scheme is therefore the only one covered within the present document.
NOTE: The country code has currently only been reserved for trial purposes until the beginning of 1999.
The present document has been designed for an early implementation of the ETNS. Improvements of the ETNS
architecture may occur later and result in revisions of the present document. In particular, the present document contains
some architectural alternatives which will be assessed during the trial period.
ETSI
5 EN 301 161 V1.1.1 (1998-10)
1 Scope
The present document specifies the methods for routeing a call from the calling party to the called party and the
management methods to be used for controlling such procedures. It also describes the number structure, including the
allocation of codes to the service described, number length and evolution from National numbers to pan-European to
global numbers.
2 References
References may be made to:
a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in
which case, subsequent revisions to the referenced document do not apply; or
b) all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
c) all versions subsequent to and including the identified version (identified by "onwards" following the version
identity); or
d) publications without mention of a specific version, in which case the latest version applies.
A non-specific reference to an ETS shall also be taken to refer to later versions published as a EN with the same
number.
2.1 Normative references
[1] ITU-T Recommendation E.164 : "The international public telecommunication numbering plan".
[2] EN 301 160 (V1.1): "Routeing of calls to the European Telephony Numbering Space (ETNS)
services".
2.2 Informative references
[3] TR 101 073 (V1.1): "Number portability for pan-European services".
[4] TR 101 079 (V1.1): "Network Aspects (NA); Routeing of calls to pan-European services using
European Telephony Numbering Space (ETNS)".
[5] ES 201 104 (V1.1): "Human Factors (HF); Human factors requirements for a European Telephony
Numbering Space (ETNS)".
[6] ETO Report: "Management, Routeing and Portability aspects of the European Telephony
Numbering Space (ETNS)".
[7] NPTF WP0 Document.
[8] NPTF WP1 Document.
ETSI
6 EN 301 161 V1.1.1 (1998-10)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following definitions apply:
administrator: The administrator has the responsibility for the high level management of the ETNS.
assisted network: A network which routes a call to an European number towards a serving network it has agreement
with in order to complete the call.
called party: An entity that terminates a call to an European number. The called party may be the ETNS subscriber to
the European number, an entity delegated by the ETNS subscriber, or a terminating equipment of the service network
(e.g. a recorded announcement equipment).
calling party: An entity that dials a European number.
ETNS country: A CEPT member country participating in the ETNS.
ETNS Registrar database: The database maintained by the Registrar where all data, both administrative and
operational, for each European number are registered.
ETNS routeing number: An ITU-T E.164 [1] number used to route to the service exchange. It can also identify the
called party, the ETNS service provider, and / or the originating network for routeing purposes.
ETNS service provider: An entity that provides one or more ETNS service(s) to its ETNS subscribers on a contractual
basis.
ETNS service: A service that has been assigned an ESI.
ETNS subscriber: An entity that requests a European number from a ETNS service provider in order to offer access
from a calling party to a ETNS service.
ETNS translation database: A database which, in the call process, translates the European number into a routeing
number.
ETNS: The numbering resource identified by E.164 [1] country code 388, used for the provisioning of the ETNS
services.
European number: A number out of the ETNS.
originating network: A network, either assisted or serving, to which the calling party is connected.
Registrar: The registrar is responsible for the day-to-day management of the ESNs behind each ESI.
service exchange: An exchange of the service network that triggers the provision of the service on reception of the
routeing number, and then forwards the call.
service network: A network that operates one or more service exchange(s).
serving exchange: An exchange, in the serving network, that can interrogate directly or indirectly an ETNS translation
database to obtain a routeing number related to the European number, and then forward the call.
serving network: A network, with one or more serving exchange(s).
ETSI
7 EN 301 161 V1.1.1 (1998-10)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
CC E.164 [1] Country Code
CEPT Conférence Européenne des Postes et Télécommunications
CEU Commission of the European Union
ECC European Country Code
ECTRA European Committee for Telecommunications Regulatory Affairs
En European number
ENTF European Numbering Task Force
ESC European Service Code
ESI European Service Identity
ESN European Subscriber Number
ETNS European Telephony Numbering Space
ETO European Telecommunications Office
GSN Global Subscriber Number
IN-CS1 Intelligent Network Capability Set 1
ISUP International Signalling User Part
NDC National Destination Code
NRA National Regulatory Authority
SgN Serving Network
SN Subscriber Number
SP ETNS Service Provider
Rn Routeing number
ETSI
8 EN 301 161 V1.1.1 (1998-10)
4 Reference model for the ETNS
This clause provides a conceptual description of the implementation of the European Telephony Numbering Space
(ETNS). Figure 1 shows the actors involved in the ETNS, and their relationship with each other. Also shown in figure 1
are the relevant reference points for the ETNS that are described in subclauses 4.2 and 4.3. Figure 1 is divided into call-
related and non call-related parts in order to clearly show the distinction between the routeing functions and the
management functions.
Administrator
MANAGEMENT PART
ETNS
Registrar
Subscriber
D
Ec
Serving Service
Network Provider
Ed
Service
CALL-RELATED PART
Provider
A
B
Calling Serving Service Called
Party Network Network Party
CF
Assisted Terminating
Network Network
Figure 1: Actors and reference points
The reference points in the management (non call-related) part of the figure 1 are used in the present document, while
the reference points in the call-related part are used in TR 101 079 [4].
The ETNS Service Provider (SP) is the entity that is relevant in the process of number assignment. The service network
is the entity that is relevant in call processing. One single entity may be both the ETNS SP and the service network, or
they may be different entities; in the latter, the entity that assumes the function of ETNS SP may or may not participate
in the call process. Such a distinction leads to recognize two concepts under the word "service provision": the function
of the first is to sell a service to a ETNS subscriber, and to be the sole interface with this ETNS subscriber, this is the
role of the ETNS SP; the function of the second is to operate the call, this is the role of the service network.
The Serving Network (SgN) is responsible for routeing a call from the calling party to the service network. The service
network (and potentially the SP) is (are) responsible for providing the service itself.
European numbers (Ens) are managed by independent authorities which are identified as the registrar and the
administrator in figure 1.
ETSI
9 EN 301 161 V1.1.1 (1998-10)
4.1 Call-related part
This subclause describes the principles for routeing a call from the calling party to the called party. This is studied in
detail in TR 101 079 [4] and EN 301 160 [2]. A call to a European number (En) can be divided in two parts.
4.1.1 First leg: getting the routeing number
The calling party shall dial the En in its international format.
Based on the European Service Identifier (ESI), clause 5, the call is routed to the serving exchange in the SgN.
Potentially, this exchange may not be located in the calling party's network. The originating network is then called an
assisted network, interconnected to the
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