SIST EN 300 960 V8.0.1:2003
(Main)Digital cellular telecommunications system (Phase 2+) (GSM); Full rate speech; Processing functions (GSM 06.01 version 8.0.1 Release 1999)
- Abstract
Updated 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
SIST EN 300 960 V8.0.1:2003 is the Slovenian standard published by SIST, identical to ETSI EN 300 960 Version 8.0.1. It covers GSM full rate speech processing functions and points readers to the detailed GSM 06-series parts that specify transcoding, DTX, VAD, comfort noise, lost-frame handling, codec homing and half-rate speech functions.
What does SIST EN 300 960 V8.0.1:2003 specify?
SIST EN 300 960 V8.0.1:2003 is an introduction to the GSM 06-series for full rate speech processing in the GSM system. It gives the overall speech-processing structure and tells the reader which companion specifications define each function in detail.
The document is organized into clauses for scope, references, abbreviations, introduction, full rate speech transcoding, DTX, VAD, comfort noise insertion, lost speech frame handling, codec homing, and half-rate traffic channel speech functions. Annex A is informative and records the change request history.
| Annex | What it covers |
|---|---|
| A (informative) | Change Request History |
What are the key requirements of SIST EN 300 960 V8.0.1:2003?
SIST EN 300 960 V8.0.1:2003 does not stand alone as a codec specification; it defines how the GSM full rate speech path is split into functions and how those functions interact. In practice, it tells implementers where to find the bit-exact rules, the frame handling, and the test approach for conformance.
Full rate speech transcoding
Clause 5 points to GSM06.10 for the detailed transcoder. The speech encoder accepts 13-bit uniform PCM, either from the Mobile Station (MS) audio path or from the network side after 8-bit A-law or µ-law conversion, and the document describes the 160-sample to 260-bit mapping and the related 456-bit channel-coded block.
This matters because the standard makes the codec behavior testable at bit level. It also states that digital test sequences are available, which is how implementers verify that an encoder or decoder follows the specified speech coding behavior.
DTX and VAD
Clause 6 describes Discontinuous Transmission (DTX) as a mode where the transmitter is active only for frames carrying useful information. The document links DTX to reduced battery use in the MS and lower average interference on the air interface.
Clause 7 describes Voice Activity Detection (VAD) as the function that decides, for each 20 ms speech coder frame, whether the frame contains speech. The VAD flag feeds the TX DTX handler but does not directly key the transmitter, so system integration has to respect the handler logic rather than using the flag alone.
Comfort noise and lost-frame handling
Clause 8 explains comfort noise insertion at the receiver, including noise estimation in the transmitter, SID frame encoding and decoding, and comfort noise generation during speech pauses. The practical purpose is to avoid the abrupt noise drop that listeners hear when transmission stops.
Clause 9 covers lost speech frames and lost SID frames. An isolated lost speech frame is replaced by a predicted frame based on earlier frames, while several consecutive losses require muting; silence frame insertion is not allowed. This is the document’s error-concealment behavior for real radio impairments.
Codec homing and half-rate speech
Clause 10 defines codec homing as an optional feature for the GSM full rate speech codec and VAD algorithm. The bit-exact design lets input test sequences force known output sequences when the module starts from the home state, which supports type approval, laboratory testing, and remote operation and maintenance.
Clause 11 gives the gross bit rate for the half-rate speech traffic channel and points to the separate half-rate speech specifications. That tells readers that the half-rate path is covered by its own set of GSM06-series documents rather than by the full rate functions here.
What terms does SIST EN 300 960 V8.0.1:2003 define?
- DTX - Discontinuous Transmission, a mode where transmission is active only for frames that carry useful speech information.
- VAD - Voice Activity Detector, the function that decides whether a speech coder frame contains speech.
- SID - Silence Descriptor, the special frame used to carry comfort-noise information.
- MS - Mobile Station, the user-side GSM equipment referenced in the speech path.
- BSS - Base Station Subsystem, the network-side part shown in the audio-processing overview.
- RPE-LTP - Regular Pulse Excitation-Long Term prediction, the coding scheme used for GSM06.10 full rate speech transcoding.
- PCM - Pulse Code Modulation, the speech sample format used at the codec input and output.
Who uses SIST EN 300 960 V8.0.1:2003?
SIST EN 300 960 V8.0.1:2003 is used by GSM equipment designers, codec implementers, and test laboratories working on mobile stations and network-side speech processing. It is also used in type approval and laboratory testing of terminal equipment and infrastructure equipment, and in remote control and testing for operation and maintenance.
Quality managers and buyers use it to check that a product follows the GSM speech-processing split between transcoding, DTX, VAD, comfort noise, lost-frame handling, and codec homing. That helps them specify the right GSM speech functions for a design or procurement package.
What changed in SIST EN 300 960 V8.0.1:2003 from the previous edition?
The document history identifies this publication as Version 8.0.1 for Release 1999, and the scope says it was updated to Version 8.0.0 CRs from SMG#31. Annex A also records the change-request history leading through earlier version updates.
Which standards are used with SIST EN 300 960 V8.0.1:2003?
| Standard | What it contributes |
|---|---|
| GSM01.04 | Abbreviations and acronyms used in the document |
| GSM03.50 | Transmission planning aspects of the speech service, including the audio parts |
| GSM05.03 | Channel coding used after full rate speech encoding |
| GSM06.10 | Full rate speech transcoding and the basis for codec homing |
| GSM06.11 | Substitution and muting of lost speech frames |
| GSM06.12 | Comfort noise aspects for full rate speech traffic channels |
| GSM06.31 | DTX for full rate speech traffic channels |
| GSM06.32 | VAD for full rate speech traffic channels |
| GSM06.02, GSM06.20, GSM06.21, GSM06.22, GSM06.41, GSM06.42 | Half-rate speech processing, including transcoding, lost-frame handling, comfort noise, DTX and VAD |
What does the SIST EN 300 960 V8.0.1:2003 document contain?
The document contains a high-level reference configuration of the GSM speech path, shown in Figure 1, with the audio path between the MS and the digital interface to the PSTN. It also contains the structure of the GSM 06-series speech processing functions and points to the detailed specifications for each function.
It describes bit-exact algorithms for full rate speech transcoding and VAD, and it explains how digital test sequences are used to verify conformance. It also covers SID frames, flags such as BFI and TAF in the audio-processing overview, and the way the TX and RX DTX handlers interact with the Radio Subsystem.
Annex A provides the change request history, which helps readers trace how the specification moved through later updates.
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Frequently Asked Questions
SIST EN 300 960 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); Full rate speech; Processing functions (GSM 06.01 version 8.0.1 Release 1999)". This standard covers: Updated to Version 8.0.0 CRs from SMG#31
Updated to Version 8.0.0 CRs from SMG#31
SIST EN 300 960 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 300 960 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); Full rate speech; Processing functions (GSM 06.01 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 300 960 Version 8.0.1SIST EN 300 960 V8.0.1:2003en01-december-2003SIST EN 300 960 V8.0.1:2003SLOVENSKI
STANDARD
ETSIEN300960V8.0.1(2000-11)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);Fullratespeech;Processingfunctions(GSM06.01version8.0.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 960 V8.0.1:2003
ETSIETSIEN300960V8.0.1(2000-11)2(GSM06.01version8.0.1Release1999)ReferenceREN/SMG-110601Q8KeywordsDigitalcellulartelecommunicationssystem,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 300 960 V8.0.1:2003
ETSIETSIEN300960V8.0.1(2000-11)3(GSM06.01version8.0.1Release1999)ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Abbreviations.64Introduction.65Fullratespeechtranscoding(GSM06.10).66FullrateDiscontinuousTransmission(DTX)(GSM06.31).67FullrateVoiceActivityDetection(VAD)(GSM06.32).78Fullratecomfortnoiseinsertion(GSM06.12).79Fullratelostspeechframesubstitutionandmuting(GSM06.11).710FullRatecodechoming(GSM06.10,optionalfeature).811Speechtransmissionfunctionsofthehalfratetrafficchannel.8AnnexA(informative):ChangeRequestHistory.10History.11SIST EN 300 960 V8.0.1:2003
ETSIETSIEN300960V8.0.1(2000-11)4(GSM06.01version8.0.1Release1999)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).Thepresentdocumentdescribesingeneraltermsthespeechprocessingfunctionswithinthedigitalcellulartelecommunicationssystem.ThecontentsofthepresentdocumentmaybesubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillthenbere-submittedforformalapprovalproceduresbyETSIwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version8.x.ywhere:8GSMPhase2+Release1999.xtheseconddigitisincrementedforchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.;ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:3November2000DateoflatestannouncementofthisEN(doa):28February2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31August2001DateofwithdrawalofanyconflictingNationalStandard(dow):31August2001SIST EN 300 960 V8.0.1:2003
ETSIETSIEN300960V8.0.1(2000-11)5(GSM06.01version8.0.1Release1999)1ScopeThepresentdocumentisanintroductiontothe06seriesoftheGSMtechnicalspecificationsdealingwiththeFullratespeechprocessingfunctionsintheGSMsystem.Ageneraloverviewofthespeechprocessingpartsisgivenwithreferencetothetechnicalspecificationswhereeachpartisspecifiedindetail.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]GSM03.50:"Digitalcellulartelecommunicationssystem(Phase2+);TransmissionplanningaspectsofthespeechserviceintheGSMPublicLandMobileNetwork(PLMN)system".[3]GSM06.10:"Digitalcellulartelecommunicationssystem(Phase2+);Fullratespeech;Transcoding".[4]GSM06.11:"Digitalcellulartelecommunicationssystem(Phase2+);Fullratespeech;Substitutionandmutingoflostframesforfullratespeechchannels".[5]GSM06.12:"Digitalcellulartelecommunicationssystem(Phase2+);Fullratespeech;Comfortnoiseaspectforfullratespeechtrafficchannels".[6]GSM06.31:"Digitalcellulartelecommunicationssystem(Phase2+);Fullratespeech;DiscontinuousTransmission(DTX)forfullratespeechtrafficchannels".[7]GSM06.32:"Digitalcellulartelecommunicationssystem(Phase2+);VoiceActivityDetector(VAD)forfullratespeechtrafficchannels".[8]GSM06.02:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechprocessingfunctions".[9]GSM06.20:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechtranscoding".[10]GSM06.21:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Substitutionandmutingoflostframesforhalfratespeechtrafficchannels".[11]GSM06.22:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Comfortnoiseaspectsforhalfratespeechtrafficchannels".[12]GSM06.41:"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;DiscontinuousTransmission(DTX)forhalfratespeechtrafficchannels".[13]GSM06.42:"Digitalcellulartelecommunicationssystem(Phase2+);"Halfratespeech;VoiceActivityDetector(VAD)forhalfratespeechtrafficchannels".SIST EN 300 960 V8.0.1:2003
ETSIETSIEN300960V8.0.1(2000-11)6(GSM06.01version8.0.1Release1999)3AbbreviationsAbbreviationsusedinthepresentdocumentarelistedinGSM01.04[1].4IntroductionFigure1presentsareferenceconfigurationwherethevariousspeechprocessingfunctionsareidentified.Inthisfigure,therelevanttechnicalspecificationsforeachfunctionarealsoindicated.Infigure1,theaudiopartsincludinganaloguetodigitalanddigitaltoanalogueconversionareincludedtoshowthecompletespeechpathbetweentheaudioinput/outputintheMobileStation(MS)andthedigitalinterfacetothePSTN
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