SIST I-ETS 300 380 E1:2003
(Main)Universal Personal Telecommunication (UPT); Access devices Dual Tone Multi Frequency (DTMF) sender for acoustical coupling to the microphone of a handset telephone
General Information
- Abstract
The mechanicanical & acoustical characteristics of a UPT DTMF access device which is accoustically coupled to the microphone of a handset telephony terminal.
- Status
- Published
- Publication Date
- 30-Nov-2003
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Dec-2003
- Due Date
- 01-Dec-2003
- Completion Date
- 01-Dec-2003
Overview
SIST I-ETS 300 380 E1:2003 is a Slovenian national adoption of the European standard I-ETS 300 380, addressing Universal Personal Telecommunication (UPT) access devices that use Dual Tone Multi Frequency (DTMF) signaling. Specifically, this standard focuses on the mechanical and acoustical characteristics required for DTMF devices intended for acoustic coupling to the microphone of handset telephones. Its primary aim is to ensure reliable signal transmission when such devices are used with a variety of telephone handsets, supporting compatibility with Public Switched Telephone Network (PSTN) and Integrated Services Digital Network (ISDN).
Published by the Slovenian Institute for Standardization (SIST), this standard sets forth test procedures and performance requirements to help manufacturers deliver compliant DTMF access devices for UPT services.
Key Topics
- Scope: Requirements for DTMF sender devices that are acoustically coupled to the microphone of traditional handset telephones.
- Transmission Requirements:
- Signalling frequencies: Defines frequency groups and combinations based on standard DTMF allocation for numeric inputs and special characters.
- Transmission levels: Specifies acceptable Sound Pressure Level (SPL) for signal transmission, with guidance to prevent distortion and interference.
- Duration: Requirements for the length of tone signals and pauses, for both manual and automatic sending.
- Unwanted frequency components: Sets limits on signal noise outside intended DTMF frequencies.
- Test Arrangement: Outlines the use of an artificial ear (IEC 318 standard) and flat plate set-up for objective, reproducible testing of acoustic coupling characteristics.
- Practical Considerations:
- Variations in output levels due to different handset designs.
- Acoustic coupling effectiveness can depend on handset type, shape, and positioning.
Applications
- UPT and Telecommunication Devices: The standard is essential for manufacturers and integrators of access devices that enable DTMF signaling for UPT, ensuring interoperability with a broad array of telephone handsets.
- Security & Access Control: UPT access devices using DTMF are commonly utilized in secure authentication or remote access scenarios where acoustic coupling is needed.
- Legacy System Integration: Ensures reliable operation of modern access devices with legacy PSTN and ISDN terminals, enabling broader telecommunications compatibility.
- Testing & Certification: Laboratories and certification bodies use the standardized test arrangement and measurement criteria to verify device compliance before market release.
- Service Providers: Telecom service providers can specify compliance with SIST I-ETS 300 380 E1:2003 as a procurement criterion, supporting consistent performance across networks.
Related Standards
- ETS 300 001: General technical requirements for equipment connected to an analogue PSTN subscriber interface; referenced for transmission requirements and measurement techniques.
- IEC 318: Artificial ear standard for calibration of earphones; referenced for acoustical test arrangements.
- CCITT Recommendation P.35: Addresses handset telephone design for standardized measurements.
- prETS 300 391-1: Covers functional and security requirements for Universal Personal Telecommunication services.
Conclusion
Implementing SIST I-ETS 300 380 E1:2003 promotes interoperability and consistent performance for DTMF-based UPT access devices acoustically coupled to telephone handsets. By aligning with established European telecommunication standards, manufacturers and users benefit from increased device compatibility, reduced signal distortion, and improved customer experiences across both modern and legacy telecom infrastructure.
Keywords: Universal Personal Telecommunication, DTMF, acoustic coupling, handset telephone, access device, PSTN, ISDN, telecommunication standards, SIST, ETSI, signaling frequencies.
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Frequently Asked Questions
SIST I-ETS 300 380 E1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Universal Personal Telecommunication (UPT); Access devices Dual Tone Multi Frequency (DTMF) sender for acoustical coupling to the microphone of a handset telephone". This standard covers: The mechanicanical & acoustical characteristics of a UPT DTMF access device which is accoustically coupled to the microphone of a handset telephony terminal.
The mechanicanical & acoustical characteristics of a UPT DTMF access device which is accoustically coupled to the microphone of a handset telephony terminal.
SIST I-ETS 300 380 E1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.040.01 - Telecommunication systems in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST I-ETS 300 380 E1:2003 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-december-2003
8QLYHU]DOQHRVHEQHNRPXQLNDFLMH 837 ±'RVWRSRYQHQDSUDYH±'YRWRQVNL
YHþIUHNYHQþQL '70) RGGDMQLN]D]YRþQRSRYH]RYDQMH]PLNURIRQRPSRJRYRUNH
Universal Personal Telecommunication (UPT); Access devices Dual Tone Multi
Frequency (DTMF) sender for acoustical coupling to the microphone of a handset
telephone
Ta slovenski standard je istoveten z: I-ETS 300 380 Edition 1
ICS:
33.040.01 Telekomunikacijski sistemi Telecommunication systems
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERIM
EUROPEAN I-ETS 300 380
TELECOMMUNICATION March 1995
STANDARD
Source: ETSI TC-TE Reference: DI/TE-04025
ICS: 33.020, 33.040.40
UPT, DTMF, Acoustical coupling
Key words:
Universal Personal Telecommunication (UPT);
Access devices
Dual Tone Multi Frequency (DTMF) sender for acoustical
coupling to the microphone of a handset telephone
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
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
Page 2
I-ETS 300 380: March 1995
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.
Page 3
I-ETS 300 380: March 1995
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Abbreviations.7
4 Transmission requirements.8
4.1 Signalling frequencies.8
4.2 Transmission levels .8
4.3 Duration .8
4.3.1 Manually controlled sending.8
4.3.2 Automatic controlled sending .8
4.4 Unwanted frequency components .9
5 Test specification .9
5.1 General .9
5.2 Frequencies .9
5.3 Transmission levels .9
5.4 Duration .9
5.5 Unwanted frequency components .9
Annex A (normative): Test arrangement.10
A.1 IEC 318 coupler/flat plate arrangement .10
Annex B (informative): Comments on acoustic coupling .11
B.1 Output level .11
B.2 Unwanted signals .11
B.3 Test setup.11
B.4 Level difference.11
Annex C (informative): Bibliography.12
History.13
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I-ETS 300 380: March 1995
Blank page
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I-ETS 300 380: March 1995
Foreword
This Interim European Telecommunication Standard (I-ETS) was produced by the Terminal Equipment
(TE) Technical Committee of the European Telecommunications Standards Institute (ETSI).
An ETSI standard may be given I-ETS status either because it is regarded as a provisional solution ahead
of a more advanced standard, or because it is immature and requires a "trial period". The life of an I-ETS
is limited to three years after which it can be converted into an ETS, have it's life extended for a further
two years, be replaced by a new version, or be withdrawn.
Proposed announcement date
Date of latest announcement of this I-ETS (doa): 30 June 1995
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I-ETS 300 380: March 1995
Blank page
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I-ETS 300 380: March 1995
1 Scope
This I-ETS defines the tone generating and acoustical characteristics of a one-way (sending) Universal
Personal Telecommunication (UPT) access device of Dual Tone Multi Frequency (DTMF) type to be
acoustically coupled to the mouthpiece of a telephone set. The characteristics specified have been
chosen to conform to the transmission requirements as specified in ETS 300 001 and, therefore, to be
generally acceptable for use in the Public Switched Telephone Network (PSTN) and Integrated Services
Digital Network (ISDN).
The I-ETS specifies a test arrangement to verify conformance. It is not possible to standardize the
physical dimensions for efficient acoustic coupling because of the wide variety of handset types in use in
Europe. When using a device conforming to this I-ETS, the electrical level to the network will depend on
the characteristics of the telephone set to which it is acoustically coupled. Annex B to this I-ETS indicates
the variation level that could be expected. A worst case scenario is that a device conforming to this I-ETS
will not ensure proper functioning.
NOTE: The specification of the functional requirements of the device is outside the scope of
this I-ETS. Information about functional requirements can be found in prETS 300
391-1.
2 Normative references
This I-ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this I-ETS only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies.
[1] IEC 318: "An IEC artificial ear, of the wideband type, for the calibration of
earphones used in audiometry".
3 Abbreviations
For the purposes of this I-ETS, the following abbreviation
...