SIST ETS 300 581-3 E1:2003
(Main)European digital cellular telecommunications system; Half rate speech; Part 3: Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21)
General Information
- Abstract
.
- 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
- Mandate
- T-172
Overview
SIST ETS 300 581-3 E1:2003 specifies the requirements for substitution and muting of lost frames for half rate speech traffic channels in the European digital cellular telecommunications system (GSM). This standard, aligned with GSM 06.21, plays a crucial role in ensuring speech quality on half rate speech channels by defining procedures to handle lost or unreliable speech and Silence Descriptor (SID) frames. Its implementation is mandatory in GSM Base Station Systems (BSS) and Mobile Stations (MS) that support half rate speech traffic.
These measures help maintain user experience by concealing transmission errors and reducing audible artifacts when frames are lost due to poor radio conditions or transmission errors in mobile networks.
Key Topics
Frame Substitution and Muting
Defines how lost or unreliable speech and SID frames are handled by substituting missing data or gradually reducing output noise, enhancing perceived speech quality.Discontinuous Transmission (DTX) Handling The standard addresses operation during receive DTX, specifically for managing lost frames received from the Radio Sub System (RSS).
Error Detection and Concealment Techniques
Utilizes signal plausibility analyses and threshold mechanisms to determine frame usability, minimizing the risk of decoding errors.State-Based Processing Describes stepwise procedures for handling consecutive lost frames, including state machines that control speech muting and substitution behavior.
Gradual Output Muting
Specifies timelines and thresholds for muting output following consecutive frame loss events, helping users distinguish between channel breakdown and normal operation.
Applications
Implementation of SIST ETS 300 581-3 E1:2003 is essential for organizations and vendors involved in GSM network infrastructure and device development. Its key applications include:
Mobile Network Equipment
Ensures base station and mobile device compatibility as required by GSM specifications, especially with half rate codecs.Mobile Device Manufacturers
Guarantees consistent end-user voice quality by handling transmission errors and lost audio frames effectively.Telecom System Testing and Certification
Used as a reference for conformance testing, certification, and quality assurance of half rate speech functionalities and error resilience in GSM products.Network Optimization and Maintenance
Helps operators monitor and improve network performance, particularly under challenging radio conditions where frame loss is more likely.
Implementing the standardized procedures for lost frame management results in improved subjective speech quality, consistent communication, and compliance with international GSM specifications.
Related Standards
The following standards are closely related to or referenced by SIST ETS 300 581-3 E1:2003 in the context of half rate speech and GSM networks:
- ETS 300 581-1 (GSM 06.02): Half rate speech processing functions
- ETS 300 581-2 (GSM 06.20): Half rate speech transcoding
- ETS 300 581-4 (GSM 06.22): Comfort noise aspects for half rate speech channels
- ETS 300 581-5 (GSM 06.41): Discontinuous Transmission (DTX) for half rate speech
- ETS 300 581-6 (GSM 06.42): Voice Activity Detection (VAD) for half rate speech
- ETS 300 581-7 (GSM 06.06): ANSI-C code for the GSM half rate speech codec
These standards together provide a complete framework for half rate voice communications in GSM networks, ensuring interoperability, robustness, and high-quality mobile telephony across Europe and globally.
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Frequently Asked Questions
SIST ETS 300 581-3 E1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "European digital cellular telecommunications system; Half rate speech; Part 3: Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21)". This standard covers: .
.
SIST ETS 300 581-3 E1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.070.50 - Global System for Mobile Communication (GSM). The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ETS 300 581-3 E1:2003 is associated with the following European legislation: Standardization Mandates: T-172. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST ETS 300 581-3 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
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European digital cellular telecommunications system; Half rate speech; Part 3:
Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21)
Ta slovenski standard je istoveten z: ETS 300 581-3 Edition 1
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN ETS 300 581-3
TELECOMMUNICATION November 1995
STANDARD
Source: ETSI TC-SMG Reference: DE/SMG-020621
ICS: 33.060.50
European digital cellular telecommunications system, Global System for Mobile communications
Key words:
(GSM)
European digital cellular telecommunications system;
Half rate speech
Part 3: Substitution and muting of lost frames for half rate
speech traffic channels
(GSM 06.21)
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.
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ETS 300 581-3: November 1995 (GSM 06.21 version 4.0.2)
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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ETS 300 581-3: November 1995 (GSM 06.21 version 4.0.2)
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .7
3.1 Definitions .7
3.2 Abbreviations .7
4 General.8
5 Requirements.8
5.1 Error detection and concealment in case of unreliable speech or SID frames.8
5.1.1 Error detection.8
5.1.2 Output signal concealment.8
5.2 Frame substitution and muting in case of lost speech or SID frames .8
5.2.1 First and second lost speech frame .8
5.2.2 Subsequent lost speech frames.8
5.2.3 First and second lost SID frame.8
5.2.4 Subsequent lost SID frames .9
6 Example solutions .9
6.1 Example solution for error detection in case of unreliable frames.9
6.2 Example solution for output signal concealment in case of unreliable frames .9
6.3 Example solution for substitution and muting of lost speech frames.9
6.4 Example solution for substitution and muting of lost SID frames .10
History.11
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ETS 300 581-3: November 1995 (GSM 06.21 version 4.0.2)
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ETS 300 581-3: November 1995 (GSM 06.21 version 4.0.2)
Foreword
This European Telecommunication Standard (ETS) has been produced by the Special Mobile Group
(SMG) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS specifies the half rate speech traffic channels for the European digital cellular
telecommunications system. This ETS corresponds to GSM technical specification, GSM 06.21, version
4.0.2 and is part 3 of a multi-part ETS covering the half rate speech traffic channels as described below:
GSM 06.02 ETS 300 581-1: "European digital cellular telecommunications system; Half rate
speech Part 1: Half rate speech processing functions".
GSM 06.20 ETS 300 581-2: "European digital cellular telecommunications system; Half rate
speech Part 2: Half rate speech transcoding".
GSM 06.21 ETS 300 581-3: "European digital cellular telecommunications system;
Half rate speech Part 3: Substitution and muting of lost frames for half rate
speech traffic channels".
GSM 06.22 ETS 300 581-4: "European digital cellular telecommunications system; Half rate
speech Part 4: Comfort noise aspects for half rate speech traffic channels".
GSM 06.41 ETS 300 581-5: "European digital cellular telecommunications system; Half rate
speech Part 5: Discontinuous Transmission (DTX) for half rate speech traffic
channels".
GSM 06.42 ETS 300 581-6: "European digital cellular telecommunications system; Half rate
speech Part 6: Voice Activity Detection (VAD) for half rate speech traffic
channels".
GSM 06.06 ETS 300 581-7: "European digital cellular telecommunications system; Half rate
speech Part 7: ANSI-C code for the GSM half rate speech codec".
GSM 06.07 ETS 300 581-8: "European digital cellular telecommunications system; Half rate
speech Part 8: Test vectors for the GSM half rate speech codec".
NOTE: TC-SMG has produced documents which give the technical specifications for the
implementation of the European digital cellular telecommunications system.
Historically, these documents have been identified as GSM Technical Specifications
(GSM-TS). These TSs may have subsequently become Interim European
Telecommunication Standards (I-ETSs), (Phase 1), or European Telecommunication
Standards (ETSs), (Phase 2), whilst others may become ETSI Technical Reports
(ETRs).
Transposition dates
Date of adoption of this ETS: 27 October 1995
Date of latest announcement of this ETS (doa): 28 February 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 August 1996
Date of withdrawal of any conflicting National Standard (dow): 31 August 1996
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ETS 300 581-3: November 1995 (GSM 06.21 version 4.0.2)
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ETS 300 581-3: November 1995 (GSM 06.21 version 4.0.2)
1 Scope
This European Telecommunication Standard (ETS) defines a frame substitution and muting procedure
which shall be used by the Receive (RX) Discontinuous Transmission (DTX) handler when one or more
lost or unreliable speech or SIlence Descriptor (SID) frames are received from the Radio Sub System
(RSS).
The requirements of this ETS are mandatory for implementation in all GSM Base Station Systems (BSS)s
and Mobile Stations (MS)s capable of supporting the half rate speech traffic channel.
2 Normative references
This 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 ETS only when incorporated in it by amendment or revision. For undated references, the
latest edition of the publication referred to applies.
[1] GSM 01.04 (ETR 100): "European digital cellular telecommunication system
(Phase 2); Abbreviations and acronyms".
[2] GSM 05.03 (ETS 300 575): "European digital cellular telecommunications
system (Phase 2); Channel coding".
[3] GSM 06.20 (ETS 300 581-2): "European digital cellular telecommunications
system; Half rate speech Part 2: Half rate speech transcoding".
[4] GSM 06.41 (ETS 300 581-5): "European digital cellular telecommunications
system; Half rate speech Part 5: Discontinuous transmission (DTX) for half r
...