SIST ETS 300 475-1 E1:2003

• Abstract:

  This ETS specifies a reference configuration for Private Telecommunica tions Network Exchanges (PTNX). It endorses the ISO/IEC/JTC1/SC6/WG6 reference configuration for Private Integrated Services Networking (PISN) Exchanges as a European Standard.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 475-1 ed.1 (1995-10) - Private Telecommunication Network (PTN); Reference configuration; Part 1: Reference configuration for PTN eXchanges (PTNXs) [ISO/IEC 11579-1 (1994), modified]

SIST ETS 300 475-1 E1:2003 is the Slovenian adoption of ETS 300 475-1 from ETSI. It specifies a reference configuration for Private Telecommunication Network eXchanges (PTNXs) and aligns that configuration with ISO/IEC 11579-1 (1994), with agreed modifications.

The standard is aimed at people defining PTN-related specifications and PTNX configurations. In practice, it gives a common reference model for Private Telecommunication Networks (PTNs) and the way their exchange functions are described.

What does SIST ETS 300 475-1 E1:2003 specify?

SIST ETS 300 475-1 E1:2003 specifies a reference configuration for PTNXs. Its core purpose is to define how the PTNX reference model is structured so that other PTN-related ETSs can use the same concepts and terminology.

The document focuses on a configuration where the information flows at the C reference point and the T reference point are separated. That matters because it fixes the architectural split that other PTN specifications can build on.

The foreword places this part in a three-part PTN series:

• Part 1 - reference configuration for PTNXs
• Part 2 - reference configuration for High-Speed PTN eXchanges
• Part 3 - reference configuration for PTNX Extension Lines

What are the key requirements of SIST ETS 300 475-1 E1:2003?

• Clause 1 limits the ETS to a reference configuration with separated C and T reference point information flows. In practice, PTNX designs should respect that separation when describing interfaces and internal functions.
• Clause 1 also says the ETS is applicable to other ETSs covering PTNs. This means later PTN standards can rely on its concepts instead of redefining them.
• Clause 1 states that another ETS is deemed compliant if it makes reference to, or uses, concepts defined here. In practice, this creates a shared terminology base for related specifications.
• Clause 2 adds ETS 300 415 as a normative reference. That matters because readers need ETS 300 415 for the official PTN and PTNX terms used in this ETS.
• Subclause 4.4 replaces the older PISN wording with the PTN definition. A PTN is a network for a predetermined set of users, and the word “private” does not mean ownership.
• Subclause 4.4 also notes that PTNs are sometimes called Corporate Telecommunication Networks (CTNs). In practice, this helps readers map different industry terms to the same network concept.
• Subclause 4.5 defines PTNX as a PTN nodal entity that provides automatic switching and call handling functions. This tells implementers that the PTNX is the exchange function in the private network architecture.
• Subclause 4.5 says a PTNX may be implemented by one or more pieces of equipment on the private network administrator’s premises, or by equipment co-located with, or physically part of, a public network. That gives flexibility in how the exchange is realized.
• Subclause 4.5 says a PTNX may provide services within its own area, from the public ISDN, from other public or private networks, or from other PTNXs. In practice, the exchange is defined as a service access and routing point, not just an internal switch.

What terms does SIST ETS 300 475-1 E1:2003 define?

• PTN - A Private Telecommunication Network serves a predetermined set of users rather than the general public.
• PTNX - A Private Telecommunication Network eXchange is the nodal entity that provides switching and call handling for telecommunication services.
• PISN - Private Integrated Services Network is the ISO/IEC term that this ETS aligns with through its PTN wording.
• PINX - Private Integrated Services Network eXchange is the ISO/IEC term replaced here by PTNX.
• CTN - Corporate Telecommunication Network is a name sometimes used for PTNs.
• C reference point - The reference point whose information flows are separated in the specified PTNX configuration.
• T reference point - The other reference point whose information flows are also separated in the specified PTNX configuration.

Who uses SIST ETS 300 475-1 E1:2003?

This standard is used by telecommunications standards writers, PTN architects, and engineers describing PTNX behavior or network structure. It is also useful to private network administrators and system suppliers who need a shared reference model and consistent terminology for PTN-related specifications.

What changed in SIST ETS 300 475-1 E1:2003 from the previous edition?

SIST ETS 300 475-1 E1:2003 adopts ISO/IEC 11579-1 (1994) with agreed modifications. The ETS text adds the PTN-specific scope for separated C and T reference point flows, adds ETS 300 415 as a normative reference, and replaces the PISN/PINX wording with PTN/PTNX terminology. The foreword also states that the ETS content replaces CENELEC ENV 41004.

Which standards are used with SIST ETS 300 475-1 E1:2003?

Standard / part	What it contributes
ISO/IEC 11579-1 (1994)	The international reference configuration text that this ETS endorses with modifications
ETS 300 415	Terms and definitions for PTN and PTNX
ETS 300 475-2	Reference configuration for High-Speed PTN eXchanges
ETS 300 475-3	Reference configuration for PTNX Extension Lines

What does the SIST ETS 300 475-1 E1:2003 document contain?

The document contains the foreword, the endorsement notice, the scope wording, the added normative reference, and the modified PTN and PTNX definitions. It also carries the publication history and the statement that the ETSI text is a European Standard based on ISO/IEC 11579-1 (1994) with agreed modifications. Its substance is a reference architecture and terminology package for PTN exchange configurations.

SLOVENSKI STANDARD
01-december-2003
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Private Telecommunication Network (PTN); Reference configuration; Part 1: Reference
configuration for PTN eXchanges (PTNXs) [ISO/IEC 11579-1 (1994), modified]
Ta slovenski standard je istoveten z: ETS 300 475-1 Edition 1
ICS:
33.040.35 Telefonska omrežja Telephone networks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 475-1
TELECOMMUNICATION October 1995
STANDARD
Source:ETSI TC-BTC Reference:DE/BTC-01022
ICS: 35.120
PTN, PTNX, configuration
Key words:
Private Telecommunication Network (PTN);
Reference configuration;
Part 1: Reference configuration for PTN eXchanges (PTNX)
[ISO/IEC 11579-1 (1994), modified]
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
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Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
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Tel.: [phone] - Fax: [phone]
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 1995. All rights reserved.
New presentation - see History box

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ETS 300 475-1: October 1995
Foreword
Part 1 of this final draft European Telecommunication Standard (ETS) has been produced by the Business
TeleCommunications (BTC) Technical Committee of the European Telecommunications Standards
Institute (ETSI), and is now submitted for the Voting phase of the ETSI standards approval procedure.
This ETS is intended to comprise 3 Parts, currently being developed both in ISO/IEC JTC1 and ETSI TC-
BTC:
"Private Telecommunication Network (PTN); Reference configuration;
Part 1: Reference configuration for PTN eXchanges (PTNX);
Part 2: Reference configuration for High-Speed PTN eXchanges;
Part 3: Reference configuration for PTNX Extension Lines".
The contents of this ETS and by implication, the contents of ISO/IEC 11579-1 (1994) are in replacement
of CENELEC ENV 41004 "Reference configuration for connectivity relations of private telecommunication
network exchanges". In accordance with previous agreements between CENELEC and ETSI, ENV 41004
will be withdrawn when this new ETS is adopted.
Proposed transposition dates
Date of adoption of this ETS: 13 October 1995
Date of latest announcement of this ETS (doa): 31 January 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 July 1996
Date of withdrawal of any conflicting National Standard (dow): 31 July 1996
Endorsement notice
The text of International Standard ISO/IEC 11579-1 (1994) was approved by ETSI as an ETS with agreed
modifications as given below.
NOTE: New or modified text is indicated using sidebars.
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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