SIST EN 300 724 V8.0.1:2003
(Main)Digital cellular telecommunications system (Phase 2+) (GSM); ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 version 8.0.1 Release 1999)
General Information
- 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
- Mandate
- T-172
Overview
SIST EN 300 724 V8.0.1:2003 specifies the ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec, providing a bit-exact implementation essential for the high-quality voice services of GSM Phase 2+ digital cellular telecommunications systems. Developed by the Slovenski inštitut za standardizacijo (SIST) and aligned with ETSI standards, this document ensures accurate, interoperable, and portable reference code for EFR codec deployment in GSM networks. The standard supports seamless mobile communications by enabling clear and efficient voice transmission across devices and platforms.
Key Topics
- GSM Enhanced Full Rate (EFR) Speech Codec: The document details the implementation of the EFR codec, which improves voice quality in GSM networks.
- Bit-Exact ANSI-C Source Code: Inclusion of ANSI-C code for the EFR speech codec ensures precise and consistent interpretation and implementation across different systems and hardware.
- Supporting Functions: Alongside the core codec functions, the standard covers bit-exact implementations for:
- Voice Activity Detection (VAD)
- Comfort Noise Generation (CNG)
- Discontinuous Transmission (DTX)
- Substitution and muting of lost frames
- Software Portability: Verified on diverse computing platforms and C compilers (such as Sun Microsystems, IBM PC/AT, and HP workstations), ensuring wide applicability.
- Reference Test Sequences: The standard provides installation verification routines and reference data files to validate correct operation.
- Code Hierarchy and Structure: Describes how the provided C code is organized, including the separate programs for encoding, decoding, and interface processing.
Applications
SIST EN 300 724 V8.0.1:2003 is crucial for several operational and development activities in mobile telecommunications:
- Network Equipment Manufacturers: Ensures that GSM network infrastructure-basestations, mobile switching centers, and related equipment-implements the EFR codec consistently for global interoperability.
- Mobile Device Developers: Empowers handset and embedded device manufacturers to integrate EFR codec functionality, guaranteeing voice clarity and GSM compliance.
- Software and Firmware Development: Provides source code as a reference or as a starting point for integrating the EFR codec into telecommunication software stacks.
- Conformance Testing: Facilitates validation and verification of new devices and equipment through reference encoder/decoder implementations and test sequences.
- Research and Development: Supports academic and industrial R&D with authoritative codec algorithms and implementation models.
- Interoperability Assurance: Guarantees that different vendors’ GSM components can work together using the bit-exact codec definition.
Related Standards
For comprehensive GSM codec implementation and integration, the following related standards should be considered:
- GSM 06.60: Details on EFR speech transcoding.
- GSM 06.61: Substitution and muting of lost frames for EFR channels.
- GSM 06.62: Comfort noise aspects for EFR speech traffic channels.
- GSM 06.81: Discontinuous Transmission (DTX) for EFR traffic channels.
- GSM 06.82: Voice Activity Detector (VAD) for EFR speech channels.
- GSM 06.54: Test sequences for GSM EFR codec validation.
- GSM 01.04: Abbreviations and acronyms for GSM standards.
Value in GSM Networks
Implementing SIST EN 300 724 V8.0.1:2003 guarantees bit-exact, high-performance voice coding within GSM networks, contributing to improved user experience and network efficiency. The standard’s thorough specification and reference implementation help foster robust, interoperable mobile communication systems worldwide, supporting the ongoing evolution of digital cellular telecommunication technology.
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Frequently Asked Questions
SIST EN 300 724 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); ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 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 300 724 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 300 724 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 300 724 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); ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 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 300 724 Version 8.0.1SIST EN 300 724 V8.0.1:2003en01-december-2003SIST EN 300 724 V8.0.1:2003SLOVENSKI
STANDARD
ETSIEN300724V8.0.1(2000-11)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);ANSI-CcodefortheGSMEnhancedFullRate(EFR)speechcodec(GSM06.53version8.0.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 724 V8.0.1:2003
ETSIETSIEN300724V8.0.1(2000-11)2(GSM06.53version8.0.1Release1999)ReferenceREN/SMG-110653Q8KeywordsDigitalcellulartelecommunicationssystem,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 300 724 V8.0.1:2003
ETSIETSIEN300724V8.0.1(2000-11)3(GSM06.53version8.0.1Release1999)ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitionsandabbreviations.53.1Definitions.53.2Abbreviations.64Ccodestructure.64.1ContentsoftheCsourcecodedisk.64.2Programexecution.74.3Codehierarchy.7AnnexA(informative):ChangeRequestHistory.13History.14SIST EN 300 724 V8.0.1:2003
ETSIETSIEN300724V8.0.1(2000-11)4(GSM06.53version8.0.1Release1999)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).ThepresentdocumentprovidesthebitexactdefinitionoftheEnhancedFullRate(EFR)speechtrafficcodecforthedigitalcellulartelecommunicationssystem.Anelectronicattachmentaccompaniesthepresentdocument,containingclause5,thebit-exactANSI-CcodefortheEnhancedFullRatespeechtranscoder.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 300 724 V8.0.1:2003
ETSIETSIEN300724V8.0.1(2000-11)5(GSM06.53version8.0.1Release1999)1ScopeThepresentdocumentcontainsanelectroniccopyoftheANSI-CcodefortheGSMEnhancedFullRatecodec.TheANSI-CcodeisnecessaryforabitexactimplementationoftheEnhancedFullRatespeechtranscoder(GSM06.60[3]),VoiceActivityDetection(GSM06.82[7]),comfortnoise(GSM06.62[5]),DiscontinuousTransmission(GSM06.81[6])andexamplesolutionsforsubstitutingandmutingoflostframes(GSM06.61[4]).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]GSM06.54:"Digitalcellulartelecommunicationssystem(Phase2+);TestsequencesfortheGSMEnhancedFullRate(EFR)speechcodec".[3]GSM06.60:"Digitalcellulartelecommunicationssystem(Phase2+);EnhancedFullRate(EFR)speechtranscoding".[4]GSM06.61:"Digitalcellulartelecommunicationssystem(Phase2+);SubstitutionandmutingoflostframeforEnhancedFullRate(EFR)speechtrafficchannels".[5]GSM06.62:"Digitalcellulartelecommunicationssystem(Phase2+);Comfortnoise
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