SIST EN 300 968 V8.0.1:2003
(Main)Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Test sequences for the GSM half rate speech codec (GSM 06.07 version 8.0.1 Release 1999)
General Information
- Abstract
Updeted to Version 8.0.0 CRs from SMG#31
- 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 EN 300 968 V8.0.1:2003 is a Slovenian adoption of the European Standard EN 300 968, developed by ETSI, defining the test sequences for the GSM half rate speech codec (GSM 06.07 version 8.0.1, Release 1999). This standard is integral to the Global System for Mobile Communications (GSM) Phase 2+ ecosystem, specifically for verifying the bit-exact implementation and reliability of the GSM half rate speech codec in digital cellular telecommunications systems. As GSM networks expanded globally, the ability to efficiently test and validate speech codecs using standardized test sequences became essential for international interoperability, regulatory compliance, and device certification.
Key Topics
- Bit-exact Test Sequences: Specifies digital test sequences to validate half rate speech transcoder implementations, including encoder, decoder, and associated features.
- Speech Codec Validation: Outlines methods to test the GSM half rate speech encoder and decoder, ensuring all codebook quantization levels and algorithmic paths are exercised.
- Discontinuous Transmission (DTX) & Comfort Noise: Describes test sequences for features like Discontinuous Transmission (DTX), Voice Activity Detection (VAD), and Comfort Noise Generation, which are crucial for efficient network operation and speech quality.
- File and Data Formats: Details the structures and formats for test sequence files, supporting both linear PCM and compressed (A-law/µ-law) PCM configurations.
- Synchronization Procedures: Provides methods for achieving bit and frame synchronization, enabling accurate alignment between test data and codec operation.
- Type Approval Support: Includes homing sequences and specific input patterns to assist vendors and laboratories in conducting codec type approval tests with consistency.
Applications
The standard is used extensively across the GSM telecommunications sector for:
- Device Certification & Conformance Testing: Ensuring that mobile devices and network equipment implementing the GSM half rate codec comply with international GSM specifications.
- Vendor Interoperability: Allowing manufacturers and network operators to verify interoperability between network systems, handsets, and infrastructure by testing with standardized sequences.
- Regression Testing: Providing repeatable, exhaustive test scenarios for codec firmware and hardware updates, reducing risks of regression and quality degradation.
- Quality Assurance in Manufacturing: Integrating standardized codec test sequences into automated production-line testing for mobile handsets and infrastructure components.
- Network Optimization: Supporting operators with tools to validate codec performance for speech processing, radio interface compatibility, and efficient spectrum use.
- Research and Development: Facilitating the development of new GSM devices and technologies by providing standardized reference test data.
Related Standards
SIST EN 300 968 V8.0.1:2003 intersects with several complementary GSM standards, including:
- GSM 06.20: Half rate speech transcoding specifications.
- GSM 06.21: Substitution and muting of lost frames for half rate channels.
- GSM 06.22: Comfort noise aspects for half rate channels.
- GSM 06.41: Discontinuous Transmission (DTX) for half rate channels.
- GSM 06.42: Voice Activity Detector (VAD) for half rate channels.
- GSM 06.06: ANSI-C reference code of the GSM half rate codec.
- GSM 06.02: Half rate speech processing functions.
These standards, together with SIST EN 300 968, provide a comprehensive framework for GSM codec implementation, testing, and validation, which is crucial for maintaining GSM network reliability and call quality worldwide.
Keywords: GSM, half rate speech codec, test sequences, digital cellular telecommunications, codec validation, ETSI, conformance testing, Type Approval, Voice Activity Detection, Comfort Noise, Discontinuous Transmission, GSM certification
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Frequently Asked Questions
SIST EN 300 968 V8.0.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Test sequences for the GSM half rate speech codec (GSM 06.07 version 8.0.1 Release 1999)". This standard covers: Updeted to Version 8.0.0 CRs from SMG#31
Updeted to Version 8.0.0 CRs from SMG#31
SIST EN 300 968 V8.0.1:2003 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 EN 300 968 V8.0.1:2003 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 EN 300 968 V8.0.1:2003 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Test sequences for the GSM half rate speech codec (GSM 06.07 version 8.0.1 Release 1999)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 968 Version 8.0.1SIST EN 300 968 V8.0.1:2003en01-december-2003SIST EN 300 968 V8.0.1:2003SLOVENSKI
STANDARD
ETSIEN300968V8.0.1(2000-11)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;TestsequencesfortheGSMhalfratespeechcodec(GSM06.07version8.0.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)2(GSM06.07version8.0.1Release1999)ReferenceREN/SMG-110607Q8KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)3(GSM06.07version8.0.1Release1999)ContentsIntellectualPropertyRights.4Foreword.41Scope.62References.63Definitionsandabbreviations.63.1Definitions.63.2Abbreviations.74General.75Testsequenceformat.75.1Fileformat.75.2Codechoming.86Speechcodectestsequences.86.1Codecconfiguration.86.2Speechcodectestsequences.96.2.1Speechencodertestsequences.96.2.2Speechdecodertestsequences.96.2.3Codechomingsequence.97DTXtestsequences.107.1Codecconfiguration.107.2DTXtestsequences.107.2.1Predictorvaluescomputation.107.2.2Spectralcomparison.117.2.3Thresholdadaptation.117.2.4Periodicitydetection.117.2.5Tonedetection.117.2.6Safetyandinitialization.117.2.7Comfortnoisetestsequence.117.2.8Realspeechandtones.118Sequencesforfindingthe20msframingoftheGSMhalfratespeechencoder.128.1Bitsynchronization.128.2Framesynchronization.128.3Formatsandsizesofthesynchronizationsequences.139TrauTestingwith8BitA-andµ-lawPCMTestSequences.1410TestsequencesfortheGSMhalfratespeechcodec.15AnnexA(informative):ChangeRequestHistory.16History.17SIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)4(GSM06.07version8.0.1Release1999)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeSpecialMobileGroup(SMG).Anelectronicattachmentaccompaniesthepresentdocument,containingtestsequencesforabitexactimplementationofthehalfratespeechtranscoder.Archiveen_300968v080001p0.ZIPwhichaccompaniesthepresentdocumentcontainscompressedfileswhicharelabelledasfollows:Disks24.zipClause10:TestsequencesfortheGSMhalfratespeechcodec;Disks2and4(GSM06.07).Disks135.zipClause10:TestsequencesfortheGSMhalfratespeechcodec;Disks1,3and5(GSM06.07).Disks6A.zipClause10:TestsequencesfortheGSMhalfratespeechcodec;Disks6and10(GSM06.07).Disks7B.zipClause10:TestsequencesfortheGSMhalfratespeechcodec;Disks7and11(GSM06.07).Disks89.zipClause10:TestsequencesfortheGSMhalfratespeechcodec;Disks8and9(GSM06.07).ThepresentdocumentspecifiesthehalfratespeechtrafficchannelsfortheDigitalcellulartelecommunicationssystem.ThepresentdocumentspecifiesthedigitaltestsequencesfortheGSMhalfratespeechcodecforthedigitalcellulartelecommunicationssystem.Thepresentdocument,ispartofaseriescoveringthehalfratespeechtrafficchannelsasdescribedbelow:GSM06.02"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechprocessingfunctions".GSM06.06"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;ANSI-CcodefortheGSMhalfratespeechcodec".GSM06.07"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;TestsequencesfortheGSMhalfratespeechcodec".GSM06.20"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechtranscoding".GSM06.21"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Substitutionandmutingoflostframesforhalfratespeechtrafficchannels".GSM06.22"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Comfortnoiseaspectsforhalfratespeechtrafficchannels".GSM06.41"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;DiscontinuousTransmission(DTX)forhalfratespeechtrafficchannels".GSM06.42"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;VoiceActivityDetector(VAD)forhalfratespeechtrafficchannels".SIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)5(GSM06.07version8.0.1Release1999)ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version8.x.ywhere:8indicatesRelease1999ofGSMPhase2+.xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:3November2000DateoflatestannouncementofthisEN(doa):28February2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31August2001DateofwithdrawalofanyconflictingNationalStandard(dow):31August2001SIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)6(GSM06.07version8.0.1Release1999)1ScopeThepresentdocumentspecifiesthedigitaltestsequencesfortheGSMhalfratespeechcodec.Thesesequencestestforabitexactimplementationofthehalfratespeechtranscoder(GSM06.20[2]),VoiceActivityDetector(GSM06.42[6]),comfortnoise(GSM06.22[4])andthediscontinuoustransmission(GSM06.41[5]).2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1999document,referencestoGSMdocumentsareforRelease1999versions(version8.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationssystem(Phase2+);Abbreviationsandacronyms".[2]GSM06.20:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechtranscoding".[3]GSM06.21:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Substitutionandmutingoflostframeforhalfratespeechtrafficchannels".[4]GSM06.22:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Comfortnoiseaspectsforhalfratespeechtrafficchannels".[5]GSM06.41:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;DiscontinuousTransmission(DTX)forhalfratespeechtrafficchannels".[6]GSM06.42:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;VoiceActivityDetector(VAD)forhalfratespeechtrafficchannels".[7]GSM06.06:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;ANSI-CcodefortheGSMhalfratespeechcodec".[8]GSM06.02:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechcodingfunctions".3Definitionsandabbreviations3.1DefinitionsDefinitionoftermsusedinthepresentdocumentcanbefoundinGSM06.20[2],GSM06.21[3],GSM06.22[4],GSM06.41[5]andGSM06.42[6].SIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)7(GSM06.07version8.0.1Release1999)3.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ETSEuropeanTelecommunicationStandardGSMGlobalSystemforMobilecommunicationsForabbreviationsnotgiveninthisclause,seeGSM01.04[1].4GeneralDigitaltestsequencesarenecessarytotestforabitexactimplementationofthehalfratespeechtranscoder(GSM06.20[2]),VoiceActivityDetector(GSM06.42[6]),comfortnoise(GSM06.22[4])andthediscontinuoustransmission(GSM06.41[5]).ThetestsequencesmayalsobeusedtoverifyinstallationsoftheANSICcodeinGSM06.06[7].Clause5describestheformatofthefileswhichcontainthedigitaltestsequences.Clause6describesthetestsequencesforthespeechtranscoder.Clause7describesthetestsequencesfortheVAD,comfortnoiseanddiscontinuoustransmission.Clause8describesthemethodbywhichsynchronizationisobtainedbetweenthetestsequencesandthespeechcodecundertest.Clause9describestheoptionalacceptancetestingofthespeechencoderanddecoderintheTRAUbymeansof8bitA-orµ-lawcompressedtestsequencesontheA-Interface.Electroniccopiesofthedigitaltestsequencesareprovidedasclause10,thesedigitaltestsequencesarecontainedinarchiveen_300968v080001p0.ZIPwhichaccompaniesthepresentdocument.5TestsequenceformatThisclauseprovidesinformationontheformatofthedigitaltestsequencesfortheGSMhalfratespeechtranscoder(GSM06.20[2]),VoiceActivityDetector(GSM06.42[6]),comfortnoise(GSM06.22[4])andthediscontinuoustransmission(GSM06.41[5]).5.1FileformatThetestsequencefilesareprovidedinarchiveen_300968v080001p0.ZIPwhichaccompaniesthepresentdocument.Followingdecompression,byexecutionofthe11"disk*.exe"files,fourtypesoffileareprovided:-FilesforinputtotheGSMhalfratespeechencoder:*.INP-Filesforcomparisonwiththeencoderoutput:*.COD-FilesforinputtotheGSMhalfratespeechdecoder:*.DEC-Filesforcomparisonwiththedecoderoutput:*.OUTTables1,2,3and4definetheformatsofthefourtypesoffile.Eachparameterinthesetablesiscontainedina16bitwordexceptforthesamplesofthe8bitPCMtestsequences,whicharecontainedinan8bitwordeach.Theleftorrightjustificationisindicatedinthetables.Thesizeandlocationofspeechparametersintheencoderoutput(*.COD)anddecoderinputfiles(*.DEC)aredescribedinGSM06.20[2].SIST EN 300 968 V8.0.1:2003
ETSIETSIEN300968V8.0.1(2000-11)8(GSM06.07version8.0.1Release1999)5.2CodechomingEach*.INPfileincludestwohomingframesatthestartofthetestsequence.Thefunctionoftheseframesistoresetthespeechencoderstatevariablestotheirinitialvalue.InthecaseofacorrectinstallationoftheANSI-Csimulation(GSM06.06[7]),allspeechencoderoutputframesshallbeidenticaltothecorrespondingframeinthe*.CODfile.Inthecaseofacorrecthardwareimplementationundergoingtypeapproval,thefirstspeechencoderoutputframeisundefinedandneednotbeidenticaltothefirstframeinthe*.CODfile,butallremainingspeechencoderoutputframesshallbeidenticaltothecorrespondingframesinthe*.CODfile.Each*.DECfileincludestwohomingframesatthestartofthetestsequence.Thefunctionoftheseframesistoresetthespeech
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