ETSI ETS 300 581-3 ed.1 (1995-12)

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)

DE/SMG-020621

Evropski digitalni celični telekomunikacijski sistem – Govor s polovično hitrostjo – 3. del: Nadomeščanje in utišanje izgubljenih okvirov v prometnih kanalih z govorom s polovično hitrostjo (GSM 06.21)

General Information

• Status: Published
• Publication Date: 18-Dec-1995
• Technical Committee: SMG 2 - Radio
• Current Stage: 12 - Completion
• Due Date: 01-Dec-1995
• Completion Date: 19-Dec-1995
• Mandate: T-172
• Ref Project: SIST ETS 300 581-3 E1:2003 - 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)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 581-3 E1:2003
01-december-2003
(YURSVNLGLJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP±*RYRUVSRORYLþQRKLWURVWMR±
GHO1DGRPHãþDQMHLQXWLãDQMHL]JXEOMHQLKRNYLURYYSURPHWQLKNDQDOLK]
JRYRURPVSRORYLþQRKLWURVWMR*60
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)
SIST ETS 300 581-3 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 581-3 E1:2003

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SIST ETS 300 581-3 E1:2003
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 - [e-mail]
X.400: Internet:
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.

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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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SIST ETS 300 581-3 E1:2003
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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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SIST ETS 300 581-3 E1:2003
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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)
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
...