1、STD-ETSI TR LO1 327-ENGL 1999 H 3400855 04b7031 719 11111 ETSI TR I01 327 1.1.1 (1999-11) Technical Report Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Guide to numbering options for public networks based on VolP technology STD-ETSI TR 101 327-ENGL - _ 1999 _ 340065
2、5 _ _ 0467032 855 - 2 ETSI TR 101 327V1.1.1 (1999-11) Reference DTRTTIPHON-04004 (cacOOicS.PDF) Keywords addressing, IP, network, VolP ETSI Postal address F-O6921 Sophia Antipolis Cedex - FRANCE OEce address 650 Route des Lucioles - SoDhia AntiDotis Valbonne - FRANCE Siret No 348 623 562 00017 - NAF
3、 742 C Association but non lucratif enregistre a la Sous-Prfecture de Grasse (06) No 7803/88 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Internet secreariatetsi.fr Individual copies of this ETSI deliverable can be downloaded from http:/w.etsi .org If you find errors in the present document, send
4、your comment to: editoretsi.fr Imporfant notice This ETSI deliverable 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 disp
5、ute, the reference should be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Copyright No fification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in
6、all media. O European Telecommunications Standards Institute 1999. Ail rights reserved ETSI - STD-ETSI TR 101 327-ENGL 1999 3Li00855 04b7033 791 aS 3 ETSI TR 101 327V1.1.1 (1999-11) Contents Intellectual Property Rights . 4 Foreword 4 1 Scope 5 2 References . 5 3 Abbreviations . 6 4 General consider
7、ations 6 4.1 Introduction to numbering arrangements . 6 4.2 Basic principles 4.3 Relationship ofnumbering to VoIP . 7 8 8 8 8 5.2.3 Call barring . 8 6 Other issues 9 6.1 Number portability . . . 9 6.2 Number availability . 9 6.3 Carrier selection . 9 History 10 ,-STD*ETSI TR LOL 327-ENGL 1999 H 3400
8、855 04b7034 628 - A ETSI TR 101 327 V1.l.l (1999-11) 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 ca
9、n be found in SR O00 3 14: “Intellectual Property Rights (IPRy); Essential, or potentially Essential, IPRs notified to ETSI in respect ofETSI standards”, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:llm.etsi.orglipr). Pursuant to the ETSI IP
10、R 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 O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Tec
11、hnical Report (TR) has been produced by ETSI Project Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON). ETSI STD-ETSI TR LOL 327-ENGL 1999 E 3400855 0467035 564 81 5 ETSI TR 101 327 V1.l.l (1999-11) I Scope The present document provides basic guidance on the range of diff
12、erent numbering options within E.164 that may be used for services provided on public networks using TIPHON compliant technology. The present document identifies: - the various numbering options; - the main considerations in selecting an option; - the advantages and disadvantages of each option; - i
13、ssues concerning number portability. The information and advice in the present document applies primarily to TIPHON Scenarios O (ali IP) and 2 (SCN to IP) but there are additional comments about Scenario 3 (SCN to IP to SCN). NOTE: The E. 164 number will normally be presented as the calling number i
14、n the Caiiing Line Identity which is relevant to Scenario 1 (IP to SCN) but this is not a major influence on the choice of E. 164 number. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. 41 Pl References are
15、 either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later
16、versions published as an EN with the same number. EG 201 367 (Vl.1): “Intelligent Network (IN); Number Portability Task Force (NPTF); IN and intelligence Support for Service Provider Number Portability“. ITU-T Recommendation E. 105: “International telephone service“. ITU-T Recommendation E.164 (1997
17、): “The international public telecommunication numbering plan“. TR 101 092: “Network Aspects (NA); Report on Carrier Selection“. TR 101 118 (Vi -1): “Network Aspects (NA); High level network architecture and solutions to support number portability“. TR 101 119 (Vl.1): “Network Aspects (NA); High lev
18、el description ofnumber portability“. TR 101 122 (V1.1): “Network Aspects (NA); Numbering and addressing for number portability“. TR 101 697 (Vi .l): “Number Portability Task Force (NPTF); Guidance on choice of network solutions for service provider portability for geographic and non-geographic numb
19、ers“. TR 101 698 (Vl.1): “Number Portability Task Force (NPTF); Administrative support of service provider portability for geographic and non-geographic numbers“. ETSI 6 ETSI TR 101 327 Vl.l.1 (1999-11) 3 Ab b revi at i on s For the purposes of the present document, the following abbreviations apply
20、: VoIP Voice over IP IP Internet Protocol ISDN Integrated Services Digital Network SCN Switched Circuit network UPT Universal Personal Telecommunications 4 4.1 Introduction to numbering arrangements Gen eral cons id era ti on s The introduction of VoIP technology in “public“ networks is likely to be
21、 the second phase of the development of VoIP, use in corporate networks being the first phase. Numbering becomes a significant issue when the network termination point is implemented in IP technology and the transition from the traditional Switched Circuit Network technology occurs within or between
22、 public networks. ITU-T Recommendation E. 164 describes the “Intemational Public Telecommunications Numbering Plan“. ITU-T allocates codes to: - countries and geographical regions; - global services; - “Networks“ that share a global code. Numbering within countries and geographical regions (e.g. Nor
23、th America) is managed by the national administration or numbering authority. The numbering space after the country code is subdivided into: - national destination code; - subscriber number. In practice, the national destination code may be used for: - a geographical area (e.g. a city); - aservicety
24、pe; - a network (e.g. a particular mobile network). The lengths of the national numbers and their constirnent parts vary from country to country. Not ail service types may be callable from outside the couny concerned. ETSI STD-ETSI TR 101 327-ENGL 1999 a 3400855 O467037 337 W 7 ETSI TR 101 327 Vl.l.
25、1 (1999-11) 4.2 Basic principles The approach to numbering varies from country to country and is heavily influenced by historical arrangements, but many numbering authorities follow the following principles: - the caller should be able to discern some tariff information from the early part of the nu
26、mber and should be able easily to identify numbers where the tariff is high; - numbers should be allocated on the basis of: - servicetype; - - tarifflevel. geographical location; and / or and not on the basis of technology. Many national regulations are written with reference to services and are des
27、igned to be technology independent at least to a first approximation. With the introduction of competition, many national authorities impose requirements for operatorhervice provider number portability so that customers numbers may be transferred between operators andor service providers when custom
28、ers change their account. Requirements for number portability between operators are inherently incompatible with identiQing a network operator in the initial part of a international or national number. Where numbers ranges have been or are allocated initially to network operators for subsequent sub-
29、allocation of individual numbers to customers and portability is introduced, then the relationship between the number range and the operator is broken and the number range is no longer a precise indicator of the operator. The need for callers to be able to discern some tariff idomation from numbers
30、imposes constraints on the use of numbers and reduces the efficiency of the use of numbers. in the longer term it may not be possible to maintain this information, and it may be desirable to remove this constraint, in which case other adequate forms of tariff transparency for callers may be needed.
31、4.3 Relationship of numbering to VolP VoIP is a technology that may be used to provide various different services. These services include: - the intemational telephony service such as is also provided by the PSTN and ISDN and conforms to ITU-T Recommendation E.105 2, where there will normally be som
32、e location information within the national number; national services that do not indicatalocation but have special tariff arrangements such as: - Ereephone; - - localtariff; - nationaltariff; - premium rate. - national services with special features such as Universal Personal Telecommunications (UPT
33、); - international services such as universal freephone (+800 . . . .) and UPT. Since numbering is normally related primarily to services rather than technology, this means that there is no single numbering arrangement for VoIP technology. The numbering options, and the choice from these options, sh
34、ould be determined by the service that is to be provided. 8 ETSI TR 101 327V1.1.1 (1999-11) 5 Choosing a numbering option 5. I The steps There are two steps to choosing a numbering option: Step 1: Find out what numbering options are available for the service that you plan to provide. This involves c
35、ontacting your national numbering authority to find out their policies for allocating number ranges to services. For international services it may involve discussions with the ITU-T secretariat. Evaluate the options and select the most suitable one. Step 2: 5.2 Factors in evaluating options 5.2. I T
36、he customers and callers perspectives Options should be evaluated from the perspective of customers who will be identified by a number from the range allocated. These customers will be concerned with the perception that potential callers will obtain from the number. Care should be taken to evaluate
37、likely misconceptions as well as correct deductions. For example: - callers could be deterred from calling a number that has always to be diailed in the national or intemational format even if there is a special tariff that is low, because the callers mistakenly believe the tariff to be higher than
38、it is; callers may be confused about the tariffs in some areas of the numbering plan and so may avoid calling all numbers in that range (This may be either a result of the historical development of the numbering plan or an oversight by the regulator. The situation should not arise in theory but may
39、do in practice). - 5.2.2 Service or tariff recognition If the customer who is allocated the number wants the caller to recognize a particular existing service or tariff range, then preference should be given to the well established and most widely recognized ranges. New ranges are less likely to be
40、recognized until there has been sufficient advertising and branding. 5.2.3 Cali barring Some companies and some residential users bar calls to national or international format numbers. Customers may wish to have numbers that can be dialled in the most local format available because otherwise some po
41、tential callers will be barred from calling them. 5.2.4 Accessibility Although the ITU-T and most countries provide rules for opening access to new codes, in practice not all operators follow these rules and there may be delays before all the potential callers who should be able to gain connection t
42、o a given number are able to do so. Operators should ensure that adequate advance notification is given of new number ranges and allocations. ETSI STD-ETSI TR 101 327-ENGL 3997 3400855 04b7039 LOT 9 ETSI TR 101 327V1.1.1 (1999-11) 6 Other issues 6.1 Num ber porta biiity Number portability between op
43、erators is relevant to geographic, non-geographic and mobile services. Many regulators require operator portability to be provided for some services or number ranges. Market entrants who use VoIP may be very concerned to obtain number allocations that look as similar as possible those used by SCN ne
44、tworks and to obtain the number Portability from existing operators. This may be essential in order to compete for customers from the existing networks. The market entrants may, in turn, have to offer portability from their network to other operators. The main ETSI documents on number portability ar
45、e: - TR 101 119 (Vl.1): Highlevel descriptionofnumberportability 6; - TR 101 118 (Vi .I): High level network architecture and solutions to support number Portability 5; - TR 101 122 (Vi.1): Numbering and addressing for number portability 7; - EG 201 367: IN and intelligence support for service provi
46、der number portability I; - TR 101 697 (Vl.1): Guidance on choice ofnetwork solutions for service provider portability for geographic and non-geographic numbers SI; - TR 101 698 (VI .l): Administrative support of service provider number portability 9. 6.2 N u m ber avai la bi I ity The availability
47、of numbers in some countries may be scarce and the introduction of VoIP technology may lead to many new applications for number blocks, especially for geographic numbers. National numbering authorities need to plan for this potential increase in demand in order to avoid shortages. 6.3 Carrier se I e
48、ct i o n Although not a pure numbering issue, operators who wish to provide services to customers who are connected to other access networks (TIPHON Scenario 3) need to obtain a carrier selection code from the national authority so that callers can select their network. in some countries, it may be
49、possible for callers to have cher pre-selection where the access provider registers their choice of long distance or international cher and routes all calls that do not have call-by-call selection in accordance withthis choice. Further information is given in TR 101 092: Report on carrier selection 4. ETSI - STD - ETSI -TR v1.1.1 November 1999 &II 337-ENGL I999 W 3400855 04b7040 92I me Publication io ETSI TR 101 327Vl.l.l (1999-11) History ETSI
