SIST ES 201 481 V1.1.1:2005
(Main)Integrated Services Digital Network (ISDN); ISDN service enhancements based on DDI ranges for call diversion supplementary services
General Information
- Abstract
To identify and investigate if there are additional requirements to ISDN services, as a result of user requirements on DDI ranges.
- Status
- Published
- Publication Date
- 31-Dec-2004
- Technical Committee
- SPN - Services and Protocols for Networks
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Jan-2005
- Due Date
- 01-Jan-2005
- Completion Date
- 01-Jan-2005
Overview
SIST ES 201 481 V1.1.1:2005 defines enhancements to Integrated Services Digital Network (ISDN) services, focusing on how Direct Dialling In (DDI) number ranges can be used to improve call diversion supplementary services. Issued by SIST and aligned with ETSI ES 201 481, this standard addresses user-driven requirements for more flexible, granular call management within ISDN environments, particularly in organizations managing private networks. By introducing the concept of "DDI ranges," the standard enables selective assignment and control of supplementary services such as call forwarding and deflection, offering significant benefits in terms of operational flexibility and network efficiency.
Key Topics
- DDI Ranges: A DDI range consists of consecutive or, optionally, non-consecutive DDI numbers, which can be used to apply supplementary services more selectively rather than to the whole hunt group.
- Supplementary Services Management: Users can activate, deactivate, and interrogate supplementary services, such as Call Forwarding Unconditional (CFU), Call Forwarding Busy (CFB), Call Forwarding No Reply (CFNR), Call Deflection (CD), and Selective Call Forwarding (SCF), based on DDI ranges.
- Flexible Call Routing: Allows private network administrators to direct calls differently for various parts of their organization, improving response to different operational scenarios.
- Network Provider Options: The provision and configuration of DDI ranges, including the number of ranges per hunt group, are subject to agreement with the network provider.
Applications
The enhancements outlined in SIST ES 201 481 V1.1.1:2005 are directly relevant to organizations using ISDN for internal telephony and communications. Practical scenarios include:
- Complex Private Networks: Businesses with multiple departments, branches, or sub-networks can benefit from assigning specific call diversion rules to different DDI ranges, providing tailored call handling for each section.
- Business Continuity: In the event of a private network failure, DDI range-based call diversion ensures that incoming calls can be rerouted to alternate destinations swiftly, maintaining connectivity.
- Efficient Resource Management: By enabling selective application of supplementary services, organizations can avoid unnecessary call forwarding for all numbers, optimizing network resources and improving user experience.
- Scalable Telephony Solutions: As the number of internal users or DDI numbers grows, this standard facilitates manageable and scalable call routing policies.
Related Standards
For comprehensive implementation and interoperability, consider the following related standards:
- ITU-T Recommendation I.112 – Definitions and vocabulary for ISDN.
- ITU-T Recommendation I.210 – Principles for ISDN-supported telecommunication services.
- ITU-T Recommendation E.164 – International public telecommunication numbering plan.
- ETSI ETS 300 062 – ISDN DDI supplementary service description.
- ETSI ETS 300 199 – ISDN Call Forwarding Busy (CFB) supplementary service.
- ETSI EN 301 133 – ISDN Selective Call Forwarding (SCF) supplementary services.
- ETSI DEN/SPAN-020028 – ISDN Trunk Hunting supplementary service.
- ETSI ETS 300 200/201/202 – Descriptions for CFU, CFNR, and CD supplementary services.
- ETSI ETS 300 345 – Interworking between public and private ISDNs.
Conclusion
SIST ES 201 481 V1.1.1:2005 provides a structured approach to enhancing ISDN supplementary services via DDI ranges, enabling telecommunications providers and enterprise network managers to achieve greater flexibility and reliability in call handling. Its adoption supports scalable, user-focused telephony solutions that can adapt to evolving organizational needs within ISDN frameworks.
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Frequently Asked Questions
SIST ES 201 481 V1.1.1:2005 is a standardization document published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); ISDN service enhancements based on DDI ranges for call diversion supplementary services". This standard covers: To identify and investigate if there are additional requirements to ISDN services, as a result of user requirements on DDI ranges.
To identify and investigate if there are additional requirements to ISDN services, as a result of user requirements on DDI ranges.
SIST ES 201 481 V1.1.1:2005 is classified under the following ICS (International Classification for Standards) categories: 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ES 201 481 V1.1.1:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2005
Digitalno omrežje z integriranimi storitvami (ISDN) – Izboljšanje storitve ISDN na
podlagi dosegov DDI za dopolnilne storitve izsmeritve klica
Integrated Services Digital Network (ISDN); ISDN service enhancements based on DDI
ranges for call diversion supplementary services
Ta slovenski standard je istoveten z: ES 201 481 Version 1.1.1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
ETSI ES 201 481 V1.1.1 (2000-03)
ETSI Standard
Integrated Services Digital Network (ISDN);
ISDN service enhancements based on DDI ranges
for the call diversion supplementary services
2 ETSI ES 201 481 V1.1.1 (2000-03)
Reference
DES/SPAN-020075
Keywords
DDI, ISDN, supplementary service
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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 2000.
All rights reserved.
ETSI
3 ETSI ES 201 481 V1.1.1 (2000-03)
Contents
Intellectual Property Rights.4
Foreword .4
Introduction .4
1 Scope.5
2 References.5
3 Definitions and abbreviations .6
3.1 Definitions.6
3.2 Abbreviations .6
4 User requirements .6
5 Description .6
6 Intercommunication considerations .8
6.1 Effect of DDI ranges on the DDI supplementary service and the interactions with the call diversion
supplementary services.8
6.1.1 Call Forwarding Unconditional (CFU) .8
6.1.2 Call Forwarding Busy (CFB).8
6.1.3 Call Forwarding No Reply (CFNR).8
6.1.4 Call Deflection (CD).8
6.1.5 Selective Call Forwarding (SCF).8
Bibliography.9
History.10
ETSI
4 ETSI ES 201 481 V1.1.1 (2000-03)
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 ETSI Standard (ES) has been produced by ETSI Technical Committee Services and Protocols for Advanced
Networks (SPAN).
Introduction
The present document describes the structure and the functions of DDI ranges and the effects on the DDI supplementary
service and the call diversion supplementary services.
ETSI
5 ETSI ES 201 481 V1.1.1 (2000-03)
1 Scope
The present document defines the possibility to assign call diversion supplementary services to a DDI range as an
alternative to assigning supplementary services to the whole hunt group.
The purpose of the introduction of DDI ranges is to fulfil the user requirements concerning the DDI supplementary
service and the interactions with the call diversion supplementary services.
The present document shall be considered as a base for the revision of the interaction sections of the DDI supplementary
service and the call diversion supplementary services.
The ISDN Service enhancements based on DDI ranges for the call diversion supplementary services are applicable to all
circuit-switched telecommunication services.
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] ITU-T Recommendation I.112 (1993): "Vocabulary of terms for
...