SIST-TP TR 101 327 V1.1.1:2004

• Abstract:

  This TR describes the options for numbering for subscribers to services implemented in TIPHON compliant networks and discusses the advantages and disadvantages of each option.

• Status: Published
• Publication Date: 31-Mar-2004
• ICS: 33.020 - Telecommunications in general
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: ETSI TR 101 327 V1.1.1 (1999-11) - Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Guide to numbering options for public networks based on VoIP technology

Overview

SIST-TP TR 101 327 V1.1.1:2004 is a technical report that serves as a guide to numbering options for public networks leveraging Voice over Internet Protocol (VoIP) technology, developed in alignment with the Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) project. Its main focus is to assist service providers, national regulators, and network operators in selecting optimal numbering arrangements for TIPHON-compliant VoIP public networks. The standard addresses the practical aspects of using E.164 numbering for services transitioning from traditional Switched Circuit Networks (SCN) to IP-based solutions, explaining the key factors influencing number allocation, portability, and accessibility in VoIP contexts.

Key Topics

• Numbering Plan Arrangements:
  Examines the application of the E.164 international telephone numbering standard, including breakdowns into country codes, national destination codes, and subscriber numbers.

• Principles of Numbering:
  Discusses principles such as technology independence, clarity of service or tariff recognition, and allocation based on service type, location, or tariff level.

• VoIP Service Integration:
  Analysis of how VoIP services fit within existing numbering frameworks, for both international and national telephony, including number allocation for freephone, premium, and universal services.

• Choosing Numbering Options:
  Outlines practical steps for evaluating and selecting numbering strategies, including engagement with national numbering authorities and consideration of customer-ascribed value.

• Evaluation Factors:
  Addresses key decision criteria such as customer and caller perspectives, the importance of clear service or tariff recognition, implications for call barring, and real-world accessibility issues.

• Other Numbering Issues:
  Covers critical topics like number portability, ensuring new services can attract customers from established providers, number block availability in response to increased VoIP demand, and requirements for carrier selection codes.

Applications

The guide is valuable for a range of stakeholders in telecommunications:

• Service Providers and Network Operators:

  • Facilitates migration planning from SCN to VoIP by clarifying number allocation processes.
  • Assists in ensuring interoperability and ease of customer transition through portable and recognizable numbering formats.
  • Supports regulatory compliance by conforming to national and international numbering frameworks.

• National Regulators:

  • Enables effective planning for number blocks to accommodate growing VoIP services and maintain fair competition.
  • Provides a basis for policies ensuring customer access, number portability, and sufficient future number availability.

• Business and Residential Users:

  • Ensures continuity and transparency in numbering, reducing caller confusion over tariffs and access, especially during the adoption of new IP-based services.
  • Encourages trust and usability by aligning VoIP service identities with established numbering expectations.

Related Standards

For coherent numbering management and VoIP network evolution, the following standards are directly referenced or complementary:

• ITU-T Recommendation E.164: The international public telecommunication numbering plan.
• EG 201 367: Intelligent Network (IN); Number Portability Task Force (NPTF); IN and Intelligence Support for Service Provider Number Portability.
• TR 101 118, TR 101 119, TR 101 122: High-level network architecture, description, and solutions supporting number portability.
• TR 101 092: Report on carrier selection, crucial for multi-network environments.
• TR 101 697, TR 101 698: Guidance and administrative support for service provider portability for both geographic and non-geographic numbers.

By following SIST-TP TR 101 327 V1.1.1:2004, telecommunications professionals can ensure robust, future-proof numbering solutions for VoIP-powered public networks while remaining compliant with key international and national standards.

SLOVENSKI STANDARD
01-april-2004
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Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON);
Guide to numbering options for public networks based on VoIP technology
Ta slovenski standard je istoveten z: TR 101 327 Version 1.1.1
ICS:
33.020 Telekomunikacije na splošno Telecommunications in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Technical Report
Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON);
Guide to numbering options
for public networks based on VoIP technology

2 ETSI TR 101 327 V1.1.1 (1999-11)
Reference
DTR/TIPHON-04004 (cac00ics.PDF)
Keywords
addressing, IP, network, VoIP
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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 1999.
All rights reserved.
ETSI
3 ETSI TR 101 327 V1.1.1 (1999-11)
Contents
Intellectual Property Rights . 4
Foreword. 4
1 Scope. 5
2 References . 5
3 Abbreviations. 6
4 General considerations . 6
4.1 Introduction to numbering arrangements . 6
4.2 Basic principles. 7
4.3 Relationship of numbering to VoIP . 7
5 Choosing a numbering option. 8
5.1 The steps. 8
5.2 Factors in evaluating options . 8
5.2.1 The customer's and caller's perspectives . 8
5.2.2 Service or tariff recognition . 8
5.2.3 Call barring . 8
5.2.4 Accessibility. 8
6 Other issues. 9
6.1 Number portability. 9
6.2 Number availability . 9
6.3 Carrier selection. 9
History. 10
ETSI
4 ETSI TR 101 327 V1.1.1 (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 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 from the ETSI Secretariat. Latest updates are available on the ETSI Web server
(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 Technical Report (TR) has been produced by ETSI Project Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON).
ETSI
5 ETSI TR 101 327 V1.1.1 (1999-11)
1 Scope
The present document provides basic guidance on the range of different 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;
- issues concerning number portability.
The information and advice in the present document applies primarily to TIPHON Scenarios 0 (all 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 in the Calling 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.
• References are 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 versions published as an EN with the same
number.
[1] EG 201 367 (V1.1): "Intelligent Network (IN); Number Portability Task Force (NPTF); IN and
Intelligence Support for Service Provider Number Portability".
[2] ITU-T Recommendation E.105: "International telephone service".
[3] ITU-T Recommendation E.164 (1997): "The international public telecommunication numbering
plan".
[4] TR 101 092: "Network Aspects (NA); Report on Carrier Selection".
[5] TR 101 118 (V1.1): "Network Aspects (NA); High level network architecture and solutions to
support number portability".
[6] TR 101 119 (V1.1): "Network Aspects (NA); High level description of number portability".
[7] TR 101 122 (V1.1): "Network Aspects (NA); Numbering and addressing for number portability".
[8] TR 101 697 (V1.1): "Number Portability Task Force (NPTF); Guidance on choice of network
solutions for service provider portability for geographic and non-geographic numbers".
[9] TR 101 698 (V1.1): "Number Portability Task Force (NPTF); Administrative support of service
provider portability for geographic and non-geographic numbers".
ETSI
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