SIST EN 300 970 V6.0.1:2003

Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21 version 6.0.1 Release 1997)

Upgrade from Phase 2+ to Release 1997

Digitalni celični telekomunikacijski sistem (faza 2+) – Govor s polovično hitrostjo – Nadomeščanje in utišanje izgubljenih okvirov pri prometnih kanalih s polovično hitrostjo govora (GSM 06.21, različica 6.0.1, izdaja 1997)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• 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
• Mandate: T-172
• Ref Project: ETSI EN 300 970 V6.0.1 (1999-06) - Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21 version 6.0.1 Release 1997)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21 version 6.0.1 Release 1997)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 970 Version 6.0.1SIST EN 300 970 V6.0.1:2003en01-december-2003SIST EN 300 970 V6.0.1:2003SLOVENSKI
STANDARD
EN 300 970 V6.0.1 (1999-06)European Standard (Telecommunications series)Digital cellular telecommunications system (Phase 2+);Half rate speech;Substitution and muting of lost frames for half ratespeech traffic channels(GSM 06.21 version 6.0.1 Release 1997)GLOBAL SYSTEM
FOR MOBILE COMMUNICATIONSRSIST EN 300 970 V6.0.1:2003

ETSIEN 300 970 V6.0.1 (1999-06)2GSM 06.21 version 6.0.1 Release 1997ReferenceDEN/SMG-110621Q6 (8zc0300o.PDF)KeywordsDigital cellular telecommunications system,Global System for Mobile communications (GSM)ETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: [phone]
Fax: [phone]Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/[e-mail] copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgCopyright NotificationNo 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 1999.All rights reserved.SIST EN 300 970 V6.0.1:2003

ETSIEN 300 970 V6.0.1 (1999-06)3GSM 06.21 version 6.0.1 Release 1997ContentsIntellectual Property Rights.4Foreword.41Scope.62References.63Definitions and abbreviations.63.1Definitions.63.2Abbreviations.64General.75Requirements.75.1Error detection and concealment in case of unreliable speech or SID frames.75.1.1Error detection.75.1.2Output signal concealment.75.2Frame substitution and muting in case of lost speech or SID frames.75.2.1First and second lost speech frame.75.2.2Subsequent lost speech frames.85.2.3First and second lost SID frame.85.2.4Subsequent lost SID frames.86Example solutions.86.1Example solution for error detection in case of unreliable frames.86.2Example solution for output signal concealment in case of unreliable frames.86.3Example solution for substitution and muting of lost speech frames.86.4Example solution for substitution and muting of lost SID frames.9Annex A (informative):Change Request History.10History.11SIST EN 300 970 V6.0.1:2003

ETSIEN 300 970 V6.0.1 (1999-06)4GSM 06.21 version 6.0.1 Release 1997Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI 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 guaranteecan 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.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical Committee Special MobileGroup (SMG).The present document defines a frame substitution and muting procedure which shall be used by the Receive (RX)Discontinuous Transmission (DTX) handler for the half rate speech traffic channels within the digital cellulartelecommunications system. The present document is part of a series covering the half rate speech traffic channels asdescribed below:GSM 06.02"Digital cellular telecommunications system (Phase 2+); Half rate speech; Half rate speechprocessing functions".GSM 06.20"Digital cellular telecommunications system (Phase 2+); Half rate speech; Half rate speechtranscoding".GSM 06.21"Digital cellular telecommunications system (Phase 2+); Half rate speech; Substitution andmuting of lost frames for half rate speech traffic channels".GSM 06.22"Digital cellular telecommunications system (Phase 2+); Half rate speech; Comfort noise aspectsfor half rate speech traffic channels".GSM 06.41"Digital cellular telecommunications system (Phase 2+); Half rate speech; DiscontinuousTransmission (DTX) for half rate speech traffic channels".GSM 06.42"Digital cellular telecommunications system (Phase 2+); Half rate speech; Voice Activity Detector(VAD) for half rate speech traffic channels".GSM 06.06"Digital cellular telecommunications system (Phase 2+); Half rate speech; ANSI-C code for theGSM half rate speech codec".GSM 06.07"Digital cellular telecommunications system (Phase 2+); Half rate speech; Test sequences for theGSM half rate speech codec".The contents of the present document is subject to continuing work within SMG and may change following formal SMGapproval. Should SMG modify the contents of the present document it will be re-released with an identifying change ofrelease date and an increase in version number as follows:Version 6.x.ywhere:6indicates Release 1997 of GSM Phase 2+xthe second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates,etc.ythe third digit is incremented when editorial only changes have been incorporated in the specification.SIST EN 300 970 V6.0.1:2003

ETSIEN 300 970 V6.0.1 (1999-06)5GSM 06.21 version 6.0.1 Release 1997Proposed national transposition datesDate of adoption of this EN:05 June 1999Date of latest announcement of this EN (doa):30 September 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 March 2000Date of withdrawal of any conflicting National Standard (dow):31 March 2000SIST EN 300 970 V6.0.1:2003

ETSIEN 300 970 V6.0.1 (1999-06)6GSM 06.21 version 6.0.1 Release 19971ScopeThe present document 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 the present document are mandatory for implementation in all GSM Base Station Systems (BSS)sand Mobile Stations (MS)s capable of supporting the half rate speech traffic channel.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-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 samenumber.[1]GSM 01.04: "Digital cellular telecommunication system (Phase 2+); Abbreviations an
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