ETSI EN 301 937 V1.1.1 (2002-10)
Services and Protocols for Advanced Networks (SPAN); Number portability for ETNS services
Services and Protocols for Advanced Networks (SPAN); Number portability for ETNS services
DEN/SPAN-110108
Storitve in protokoli za napredna omrežja (SPAN) – Prenosljivost številke za storitve ETNS
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Storitve in protokoli za napredna omrežja (SPAN) – Prenosljivost številke za storitve ETNSServices and Protocols for Advanced Networks (SPAN); Number portability for ETNS services33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 301 937 Version 1.1.1SIST EN 301 937 V1.1.1:2005en01-januar-2005SIST EN 301 937 V1.1.1:2005SLOVENSKI
STANDARD
SIST EN 301 937 V1.1.1:2005
ETSI EN 301 937 V1.1.1 (2002-10)European Standard (Telecommunications series) Services and Protocols for Advanced Networks (SPAN);Number portability for ETNS services
SIST EN 301 937 V1.1.1:2005
ETSI ETSI EN 301 937 V1.1.1 (2002-10) 2
Reference DEN/SPAN-110108 Keywords portability ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: editor@etsi.fr 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 2002. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 301 937 V1.1.1:2005
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Contents Intellectual Property Rights.4 Foreword.4 1 Scope.5 2 References.5 3 Definitions and abbreviations.5 3.1 Definitions.5 3.2 Abbreviations.7 4 Executive summary.7 5 Background.8 6 General assumptions and requirements on number portability.8 7 Reference model for the ETNS.9 7.1 Call-related [Routeing part].9 7.1.1 First leg: getting the routeing number.10 7.1.2 Second leg: providing the ETNS service.10 7.1.3 Service provision by the serving network.11 7.2 Non-call related [Management part].11 7.2.1 ETNS number assignment.11 7.2.2 Obtaining Routeing numbers (Rns).11 7.2.3 Distribution of Routeing numbers (Rns).12 8 Routeing aspects.13 9 Number portability of an ETNS number.14 10 Considerations on the technical management of the number portability for the ETNS.14 11 Provision of ETNS number portability.16 12 Technical solutions for the communication between the ETNS translation database and the ETNS routeing/portability database.17 History.18
SIST EN 301 937 V1.1.1:2005
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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 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 (http://webapp.etsi.org/IPR/home.asp). 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. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Services and Protocols for Advanced Networks (SPAN).
National transposition dates Date of adoption of this EN: 27 September 2002 Date of latest announcement of this EN (doa): 31 December 2002 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 June 2003 Date of withdrawal of any conflicting National Standard (dow): 30 June 2003
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1 Scope The scope of the present document is to investigate aspects related to number portability for ETNS services using a European Telephony Number Space (ETNS). In this study the focus is on the number portability between Service Providers (SP) i.e. a customer can move from one ETNS Service Provider (SP) to another and retain a European Number for that service. The present document describes the main technical requirements and features of number portability in the context of an ETNS service and discusses the technologies available today and in the near future for realizing number portability in an efficient way whilst trying as much as possible to minimize the impacts on the network. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. [1] ITU-T Recommendation E.164: "The international public telecommunication numbering plan". [2] ETSI EN 301 161: "Management of the European Telephony Numbering Space (ETNS)". [3] ETSI EN 301 160: "Routeing of calls to European Telephony Numbering Space (ETNS) services". [4] ITU-T Recommendation E.353: "Routing of calls when using international network routing addresses". [5] ETSI TR 101 079: "Network Aspects (NA); Routeing of calls to pan-European services using European Telephony Numbering Space (ETNS)". [6] ETO Report: "Management, Routeing and Portability aspects of the European Telephony Numbering Space (ETNS), June 1998".
http://www.eto.dk/downloads/Numbering%20reports/ETNS-MR&P.pdf 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: assisted network: network which routes all the calls to an ETNS number towards a serving network it has agreement with in order to complete the call called party: entity that terminates a call to an ETNS number calling party: entity that dials an ETNS number ETNS administrative database: part of the ETNS registrar database where administrative data for each European Number is registered ETNS number: See clause 5.2 of EN 301 161 [2]. SIST EN 301 937 V1.1.1:2005
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ETNS registrar database: database maintained by the Registrar where all data, both administrative and operational, for each ETNS number are registered ETNS routeing number: ITU-T Recommendation E.164 number used to route to the service exchange NOTE: It can also identify the called party, the ETNS service provider/producer, and/or the originating network. ITU-T Recommendation E.353 [4] is an alternative in the future. ETNS routeing/portability database: part of the ETNS registrar database where all operational data necessary to routeing and portability e.g. routeing numbers for each European Number is registered ETNS service producer: functional entity producing the ETNS service(s) in question, having real-time control of the service(s) NOTE: See clause 4 of EN 301 161 [2] for the relationship between service producer and service provider. ETNS service producer database: database from which the requested ETNS service is provided NOTE: The service producer database translates the routeing number or ETNS number into a terminating number. ETNS service provider: functional entity that provides one or more ETNS service(s) to its ETNS subscribers on a contractual basis and is not involved in real-time control of the service NOTE: See clause 4 of EN 301 161 [2] for the relationship between service producer and service provider. ETNS translation database: capability which, in the call process, translates the ETNS number into a routeing number location independent number: number without any geographic information on the physical location of the called party i.e. ETNS number (En) NOTE: A location independent number like an En cannot be used directly to route the call towards the physical location of the called party. To perform the routeing the location independent number is translated into a routeing number. Figure 1 shows the logical relationship between the terminating number, the routeing number and the En that is a specific location independent number. Called party Terminating number Routing
number En Routing number =
Terminating number ETNS
Translation
database Service provider
database
Figure 1: Relationship between En, routeing number and terminating number number portability for ETNS services: feature that allows a customer of an ETNS service to change the provider of this specific service whilst retaining the same En originating network: network, either assisted or serving, to which the calling party is connected SIST EN 301 937 V1.1.1:2005
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service exchange: 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: network that operates one or more service exchange(s) serving exchange: exchange, in the serving network, that can interrogate directly or indirectly an ETNS translation database to obtain a routeing number related to the ETNS number, and then forwards the call to the service network serving network: network, with one or more serving exchanges tariff: set of data used for the determination of utilization charges for used services terminating number: number containing explicit information on the termination point of the called party NOTE: The number is used to route towards the called party. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: En ETNS number ESI European Service Identifier ETNS European Telephony Numbering Space IN CS2 Intelligent Network Capability Set 2 NNA National Numbering Authority R Registrar Rn Routeing number SgN Serving Network SP Service Provider 4 Executive summary The portability of European Numbers between service provider for the same service is one the primary requirements that the ETNS satisfies. The ETNS number contains no service provider indication, thus supporting number portability between service providers. From the point of view of the technical management of the ETNS resource, number portability has some impacts. In particular, the registrar that is responsible for the handling of the subscriber number in the En manages a database (called the ETNS registrar database) to record the status of ETNS numbers, including information such as the routeing number, the subscriber and service provider identity, etc. When an En is ported, the service providers involved must inform the registrar that the En has been transferred from the recipient service provider to the donor service provider. The transfer of an En must be recorded in the ETNS administrative database. The ETNS administrative database is the portion of the ETNS registrar database which contains only administrative information. In the initial phase, the interactions between the registrar (ETNS administrative database) and service providers may not be automatic, requiring the involvement of an human operator. In a later phase, it would be beneficial to adopt fully automatic transactions between the registrar and service providers to avoid an unsatisfactory quality of service. The En is a location independent number that needs to be translated into a routeing number to properly route the ETNS call. This translation is performed by a network element called the ETNS translation database. When an En is ported between two service providers, the routeing number associated with the En usually changes. Supporting number portability from the routeing point of view means updating the association between an En and a routeing number in the ETNS translation database. In the updating of the ETNS translation database a key role is played by the ETNS routeing/portability database, which is the portion of the ETNS registrar database that contains certain administrative information and routeing information. The communication between the ETNS routeing/portability database and the ETNS translation database can, in the initial phase, be based on the use of manual procedures (e.g. fax, e-mail, etc.). In later phase, the use of automatic updating capabilities without human involvement should be investigated. In the long term, we can investigate the updating of the ETNS translation database via the use of IN Capability Set 2. The availability and, above all, the suitability of IN CS2 to support communication between the ETNS routeing/portability database and the ETNS translation database must still be proven. SIST EN 301 937 V1.1.1:2005
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5 Background The new emerging developments in the telecommunications market and the European Union are placing new requirements on the numbering of telecommunication services. One of the most important requirements is the creation, in parallel to the present national numbering plans, of an ETNS to provide pan-European services. The provision of number portability between service providers for ETNS services is widely recognized as a key factor to develop and strengthen a competitive service market on an European basis. The entry and the growth of new service providers will be facilitated by the possibility for a customer to change service provider whilst keeping his own ETNS number. Many entrant service providers feel the lack of number portability as an important barrier to their entry and success in the service market. The aim of the present document is to describe what number portability for ETNS services means and identify technical solutions for realizing it. 6 General assumptions and requirements on number portability This clause lists some general assumptions and requirements related to the portability of numbers belonging to the ETNS. 1) Only the ETNS number (not including prefixes and suffixes) is eligible to be ported. 2) Only the entire ETNS number is portable i.e. not a portion of it. 3) The privacy of a customer who has ported his number should be guaranteed. 4) The calling party should not be able to recognize that it is calling a ported number. 5) Number portability should not normally influence the charge to the calling user. It is recognized that the provision of ETNS number portability within the newly created number space cannot be compared with the provision of number portability within a national numbering scheme. SIST EN 301 937 V1.1.1:2005
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7 Reference model for the ETNS This clause provides a conceptual description of the implementation of the ETNS. Figure 2 shows the actors involved in the ETNS, and their relationship with each other. Also shown in figure 2 are the relevant reference points for the ETNS that are described in clauses 7.2 and 7.3. Figure 2 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. The following reference model reflects only the management and routeing aspects of the non-call and call related parts, respectively. Service Network Terminating Network Called Party Serving Network Assisted Network CALL-RELATED [ROUTEING PART]
ETNS Translation B C F A G Calling Party ETNS Service Producer Administrator Registrar ETNS Subscriber ETNS Transl
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