SIST EN 301 080 V1.2.1:2003
(Main)Fixed Radio Systems; Point-to-multipoint equipment; Frequency Division Multiple Access (FDMA); Point-to-multipoint digital radio systems in frequency bands in the range 3 GHz to 11 GHz
- Abstract
Revision for alignment with latest EMC and spurious emission standards .
- 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 301 080 V1.2.1:2003 is the Slovenian adoption of ETSI EN 301 080 Version 1.2.1. It specifies minimum technical requirements for FDMA point-to-multipoint digital radio systems in the terrestrial Fixed Service in the 3 GHz to 11 GHz range, mainly for equipment that provides network access. In practice, it is the document to check when you need radio performance, interface, and conformance requirements for this type of access system.
What does SIST EN 301 080 V1.2.1:2003 specify?
SIST EN 301 080 V1.2.1:2003 specifies the minimum system parameters for FDMA point-to-multipoint radio systems used for public and private network access. It covers how these systems are arranged, what interfaces they can use, and the key radio and performance limits they should meet.
The document is organized into scope, references, definitions, general characteristics, system parameters, and interface types. Its technical content is supported by figures for the system architecture and RF block diagram, and by tables for frequency bands, channel arrangements, measurement settings, performance thresholds, and interface options.
What are the key requirements of SIST EN 301 080 V1.2.1:2003?
Frequency bands and channel arrangements (4.2) - SIST EN 301 080 V1.2.1:2003 identifies P-MP bands in the 3 GHz to 11 GHz range and gives channel arrangements the system shall meet. For a buyer or designer, this is the first check for spectrum fit and capacity planning.
Environmental, power, EMC and synchronization conditions (4.4 to 4.8) - SIST EN 301 080 V1.2.1:2003 requires declared environmental class, power supply compatibility, EMC operation, TMN interfaces where used, and synchronization for digital interfaces. This matters because the equipment has to work in the intended site conditions and integrate with the rest of the network.
Antenna requirements (4.9) - SIST EN 301 080 V1.2.1:2003 points TS high-gain antennas to EN 300833 and other TS and CRS antennas to EN 302085. This keeps the radio link and radiation pattern within the expected fixed-radio antenna standards.
System capacity, delay, transparency and voice coding (5.1 to 5.4) - SIST EN 301 080 V1.2.1:2003 defines CRS capacity in terms of payload bit rate, limits roundtrip delay for 64 kbit/s traffic, requires transparent transport, and lists voice coding methods such as G.711, G.726, G.728 and G.729. In practice, this tells the reader what traffic types the system can carry and what delay budget to expect.
Transmitter limits and RF spectrum control (5.5) - SIST EN 301 080 V1.2.1:2003 sets transmitter power limits, allows optional ATPC, gives RF tolerance, and applies RF spectrum mask and spurious emission rules. This is the core of spectrum compatibility and helps avoid interference to other radio systems.
Receiver emissions and performance without diversity (5.6 to 5.7) - SIST EN 301 080 V1.2.1:2003 applies spurious emission limits at the receiver and sets BER-based performance, dynamic range, co-channel and adjacent-channel interference sensitivity, and CW spurious interference checks. This is what a test lab or engineering team uses to prove link robustness.
Interfaces at subscriber equipment and the network node (Clause 6) - SIST EN 301 080 V1.2.1:2003 lists analogue, telex, digital data, ISDN, SDH and network-side interface options. This is important when matching the radio system to the service node and customer equipment.
What terms does SIST EN 301 080 V1.2.1:2003 define?
- Central Station (CS) - The network-facing station that interconnects with the local switching exchange and concentrates traffic from remote stations.
- Central Radio Station (CRS) - The central baseband/radio transceiver part of the CS, which may be controlled by one CCS.
- Terminal Station (TS) - An outstation that provides subscriber interfaces.
- Repeater Station (RS) - A radio repeater outstation that may include subscriber interfaces.
- Full Capacity Load (FCL) - The maximum number of 64 kbit/s signals or equivalent a CRS can carry within a specified RF bandwidth while meeting performance and availability objectives.
- Roundtrip delay - The total delay from one end of the system to the other and back, including repeaters where used.
- Automatic Transmit Power Control (ATPC) - An optional feature that adjusts transmitter power, usually to manage link performance and interference.
Who uses SIST EN 301 080 V1.2.1:2003?
Manufacturers use SIST EN 301 080 V1.2.1:2003 to design and declare equipment characteristics for P-MP radio systems. Network operators and planners use it to choose frequencies, interfaces, and performance classes for access networks.
Test laboratories use it for BER, spectrum mask, spurious emission, and interference measurements. Quality managers and buyers use it to compare equipment against a common technical baseline for fixed wireless access deployments in urban, suburban, and regional areas.
What changed in SIST EN 301 080 V1.2.1:2003 from the previous edition?
SIST EN 301 080 V1.2.1:2003 updates EN 301 080 V1.1.1 by changing clause 2 and subclauses 4.6, 5.5.6 and 5.6.2. The foreword says these changes were made to align with CEPT/ERC Recommendation 74-01 on spurious emissions.
Which standards are used with SIST EN 301 080 V1.2.1:2003?
- ETS 300019 - Defines environmental classes and test severity for weather-protected and non-weather-protected locations.
- ETS 300132 - Covers the power supply interface for telecommunication equipment.
- EN 300385 - Sets EMC conditions for fixed radio links and ancillary equipment.
- ITU-T G.773, G.810, G.812, G.823, G.813, G.825 - Support TMN interfaces and synchronization, jitter and wander requirements.
- EN 300833 and EN 302085 - Cover antenna requirements for point-to-point and point-to-multipoint fixed radio systems.
- ITU-T G.703, G.707, G.957, Q.552, Q.553, G.961, G.962, G.964, G.965, ETS 300011, ETS 300012, ETS 300324, ETS 300347 - Provide the interface definitions listed in Clause 6.
- ITU-R F.696-2, F.697-2, F.1189-1 and ITU-T G.821, G.826 - Provide the error performance and availability objectives used for system expectations.
- ITU-R SM.329-7 and CEPT/ERC Recommendation 74-01 - Define spurious emission limits and the associated measurement range.
- ITU-T O.151 and O.181 - Support error-performance measurement on the relevant interfaces.
What does the SIST EN 301 080 V1.2.1:2003 document contain?
SIST EN 301 080 V1.2.1:2003 contains tables for frequency bands, channel spacing, minimum CRS capacity, spectrum-analyzer settings, BER thresholds, interference limits, error counts, and interface types. It also contains figures showing the general system architecture, the RF block diagram, and the spectrum mask basis used for compliance checks.
Clause 5 gives formulas for deriving receiver thresholds at other bit rates from the reference values. These parts are used for design review, lab testing, and conformity assessment of FDMA P-MP radio systems.
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Frequently Asked Questions
SIST EN 301 080 V1.2.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Fixed Radio Systems; Point-to-multipoint equipment; Frequency Division Multiple Access (FDMA); Point-to-multipoint digital radio systems in frequency bands in the range 3 GHz to 11 GHz". This standard covers: Revision for alignment with latest EMC and spurious emission standards .
Revision for alignment with latest EMC and spurious emission standards .
SIST EN 301 080 V1.2.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.040.20 - Transmission systems; 33.060.30 - Radio relay and fixed satellite communications systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 080 V1.2.1:2003 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.Fixed Radio Systems; Point-to-multipoint equipment; Frequency Division Multiple Access (FDMA); Point-to-multipoint digital radio systems in frequency bands in the range 3 GHz to 11 GHz33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systems33.040.20Prenosni sistemTransmission systemsICS:Ta slovenski standard je istoveten z:EN 301 080 Version 1.2.1SIST EN 301 080 V1.2.1:2003en01-december-2003SIST EN 301 080 V1.2.1:2003SLOVENSKI
STANDARD
ETSIEN301080V1.2.1(2000-02)EuropeanStandard(Telecommunicationsseries)FixedRadioSystems;Point-to-multipointequipment;FrequencyDivisionMultipleAccess(FDMA);Point-to-multipointdigitalradiosystemsinfrequencybandsintherange3GHzto11GHzSIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)2ReferenceREN/TM-04063-18KeywordsFDMA,multipoint,radio,RLL,transmission,FWAETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88Internetsecretariat@etsi.frIndividualcopiesofthisETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frImportantnoticeThisETSIdeliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)3ContentsIntellectualPropertyRights.5Foreword.5Introduction.51Scope.72References.83Definitions,symbolsandabbreviations.103.1Definitions.103.2Symbols.103.3Abbreviations.114Generalcharacteristics.124.1Generalsystemarchitecture.124.2Frequencybandsandchannelarrangements.134.2.1Channelplan.134.2.2Proposedchannelarrangements.134.3Compatibilityrequirements.134.4Environmentalconditions.134.4.1Equipmentwithinweatherprotectedlocations(indoorlocations).144.4.2Equipmentfornon-weatherprotectedlocations(outdoorlocations).144.5Powersupply.144.6ElectromagneticCompatibility(EMC)conditions.144.7TelecommunicationsManagementNetwork(TMN)interfaces.144.8Synchronizationofinterfacebitrates.144.9Branching/feeder/antennarequirements.144.9.1Antennaradiationpattern.145Systemparameters.155.1Systemcapacity.155.2Roundtripdelay.155.3Transparency.155.4Voicecodingmethods.155.5Transmittercharacteristics.155.5.1Transmitterpowerrange.165.5.2AutomaticTransmitPowerControl(ATPC).165.5.3Transmitter(Tx)LocalOscillator(LO)frequencyarrangements.165.5.4RFspectrummask.165.5.4.1RFspectrummaskforthecentralradiostation.165.5.4.2RF-spectrummaskfortheterminalstationandtherepeaterstation.175.5.5RFtolerance.175.5.6Spuriousemissions.185.6Receivercharacteristics.185.6.1Receiver(Rx)LOfrequencyarrangements.185.6.2Spuriousemissions.185.7Systemperformancewithoutdiversity.185.7.1Dynamiclevelrange.185.7.2BERasafunctionofReceiverinputSignalLevel(RSL).185.7.3EquipmentBackgroundBER(BBER).195.7.4Interferencesensitivity(external).205.7.4.1Cochannelinterference.205.7.4.2Adjacentchannelinterference.205.7.5Distortionsensitivity.205.7.6ContinuousWave(CW)spuriousinterference.205.8Systemperformancewithdiversity.21SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)46Typesofinterfacesatthesubscriberequipmentandthenetworknode.21Bibliography.22History.23SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeTransmissionandMultiplexing(TM).ThepresentdocumentcontainstheminimumtechnicalrequirementstoensurecompatibilityofproductsandconformancewithradioregulationsacrossETSImemberstates.Radioterminalsfromdifferentmanufacturersarenotrequiredtointerworkatradiofrequency(i.e.nocommonairinterface).Thepresentdocumentisintendedtocoveravarietyofsystemsdesignedforavarietyofservices,applications,performanceobjectivesanddeploymentconditions.Thereforeitisnecessarytoincludeinthepresentdocumentdifferentsetsofsystemparameters.Inthepresentdocumentthesesetofparametersarereferredtoas"systemtypes".WhencomparedtoEN301080V1.1.1,thepresentdocumentcontainsmodificationstoclause2andsubclauses4.6,5.5.6and5.6.2only,broughtaboutbythepublicationofCEPT/ERCRecommendation74-01(SpuriousEmissions).Theformertitleofthepresentdocuementwas:"TransmissionandMultiplexing(TM);DigitalRadioRelaySystems(DRRS);FrequencyDivisionMultipleAccess(FDMA);Point-to-multipointDRRSinfrequencybandsintherange3GHzto11GHz".NationaltranspositiondatesDateofadoptionofthisEN:31December1999DateoflatestannouncementofthisEN(doa):31March2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2000DateofwithdrawalofanyconflictingNationalStandard(dow):30September2000IntroductionThemainfieldofapplicationofPoint-to-Multipoint(P-MP)systems,usingtheFixedService(FS),istoprovideaccesstobothpublicandprivatenetworks(PublicSwitchedTelephoneNetwork(PSTN),PublicDataNetwork(PDN),etc.).BymeansofP-MPsystemsthenetworkserviceareamaycoverscatteredsubscriberlocations.Thesystemsmaybeappliedtobuildnewaccessnetworksbymeansofamulticellulararchitecture,coveringbothurbanandregionalareas.Subscribersareofferedthefullrangeofservicesbytheparticularpublicorprivatenetwork.Subscribershaveaccesstotheseservicesbymeansofthevariousstandardizedusernetworkinterfaces(e.g.2-wireloop,andIntegratedServicesDigitalNetwork(ISDN)rangingfrombasicrateton×primaryrate).SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)6P-MPsystemsprovidestandardnetworkinterfacesandtransparentlyconnectsubscriberstotheappropriatenetworknode.Thesesystemsallowaservicetobeconnectedtoanumberofsubscribersrangingfromafewtoseveralthousand,andoverawiderangeofdistances.P-MPsystemsaregenerallyconfiguredaspre-assignedsystemsorasDemandAssignedMultipleAccess(DAMA)radiosystems.TheessentialfeaturesofatypicalP-MPradiosystemare:-efficientuseoftheradiospectrum;-concentration;-transparency.Radioisoftentheidealwayofobtainingcommunicationsatlowcostandalmostindependentofdistance,anddifficulttopography.Moreover,asmallnumberofsitesarerequiredfortheseinstallations,thusfacilitatingrapidimplementationandminimizingmaintenancerequirementsofthesystems.Concentrationmeansthatmsubscriberscansharenradiochannels(mbeinglargerthann),allowingabetteruseoftheavailablefrequencyspectrumatalowerequipmentcosts.Theterm"multi-access"meansthateverysubscriberhasaccesstoeverychannel(insteadofafixedassignmentasinmostmultiplexsystems).Whenacallisinitiated,anavailablechannelisallocatedtoit.Whenthecallisterminated,thechannelisreleasedforanothercall.Concentrationrequirestheuseofdistributedintelligentcontrolwhichinturnallowsmanyotheroperationandmaintenancefunctionstobeadded.Transparencymeansthatthenetworknode(servicenode)andthesubscriberequipmentcommunicateswitheachotherwithoutbeingawareoftheradiolink.SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)71ScopeThepresentdocumentspecifiestheminimumrequirementsforsystemparametersofFrequencyDivisionMultipleAccess(FDMA)Point-to-Multipoint(P-MP)radiosystemsintheterrestrialFixedService(FS)operatinginthebands3GHzto11GHz.Thesystemwillprovideaccesstobothpublicandprivatenetworks(PublicSwitchedTelephoneNetwork(PSTN),PublicDataNetwork(PDN),etc.)bymeansofthevariousstandardizednetworkinterfaces(e.g.2-wireloop,IntegratedServicesDigitalNetwork(ISDN)and2Mbit/s).Thesystemmaybeappliedtobuildaccessnetworksbymeansofamulticellulararchitecture,coveringurban,suburban,andregionalareas.TheFDMAP-MPsystemwilltransmitaRadioFrequency(RF)signalfromthecustomersitetotheCentralStation(CS)onlyutilizingaspectralbandwidthcorrespondingtothatcapacitywhichisrequestedfromandassignedtothecustomerbypre-assignmentorbyDemandAssignedMultipleAccess(DAMA).TheCSreceivesfromeachcustomersiteasinglemodulatedcarrierbeingprocessedindependentlywithintheCS.ThustheCSisreceivingaFDMAsignal.ThepresentdocumentcoversthefollowingtypicalP-MPapplications:Thetransmissionof:-voice;-fax;-voicebanddata;-telex;relatedtoanalogueinterfacesand:-64Kbit/s;-ISDN;-digitalvideo;-digitalaudio;relatedtodigitalinterfaces.FurtherapplicationslikeAsynchronousTransportMode(ATM)mayalsobeprovided.Twoclassesofsystemshavebeendefinedinordertotakeintoaccountthelargevarietyofpossibleapplicationsduetoaccessnetworkimplementationsandtypeofservicetobeprovided.TheequipmentcoveredbythepresentdocumentshouldbedesignedtobeabletomeetthenetworkperformancerequirementsforeseenbyITU-RRecommendationsF.696-2[1]andF.697-2[2],formedium,localgradeorITU-RRecommendationF.1189-1[3]nationalportion(accessorshorthaul)ofthedigitalconnectionfollowingthecriteriadefinedinITU-TRecommendation(s)G.821[4]and/orG.826[5].ItshouldbenotedthatthevaluesforBandCareprovisionaltakingalsointoaccountnote5ofITU-RRecommendationF.1189-1[3].Theavailabilityrequirementsareunderfurtherstudybytherelevantbodies.Networkoperatorsmaychoosedifferentperformanceandavailabilityrequirementsinordertoextendthepossibleareaofapplicationthusfittingtotheirnetworkneeds.Radioterminalsfromdifferentmanufacturersarenotintendedtointerworkatradiofrequency(i.e.nocommonairinterface).Thepresentdocumentdefinestherequirementsofradioterminalandradio-relayequipmentincludingtheinterfaces.Therequirementsformultiplex,networkmanagementandantenna/feederequipmentmaybeaddressedelsewhere.SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)82ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.•Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.•Foraspecificreference,subsequentrevisionsdonotapply.•Foranon-specificreference,thelatestversionapplies.•Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]ITU-RRecommendationF.696-2:"Errorperformanceandavailabilityobjectivesforhypotheticalreferencedigitalsectionsformingpartorallofthemedium-gradeportionofanISDNconnectionatabitratebelowtheprimaryrateutilizingdigitalradiorelaysystems".[2]ITU-RRecommendationF.697-2:"Errorperformanceandavailabilityobjectivesforthelocal-gradeportionateachendofanISDNconnectionabitratebelowtheprimaryrateutilizingdigitalradiorelaysystems".[3]ITU-RRecommendationF.1189-1:"Error-PerformanceObjectivesforconstantbitratedigitalpathsatorabovetheprimaryratecarriedbydigitalradio-relaysystemswhichmayformpartorallthenationalportionofa27500kmhypotheticalreferencepath".[4]ITU-TRecommendationG.821:"Errorperformanceofaninternationaldigitalconnectionoperatingatabitratebelowtheprimaryrateandformingpartofanintegratedservicesdigitalnetwork".[5]ITU-TRecommendationG.826:"Errorperformanceparametersandobjectivesforinternational,constantbitratedigitalpathsatorabovetheprimaryrate".[6]ERCRecommendation14-03:"Harmonizedradiofrequencychannelarrangementsforlowandmediumcapacitysystemsintheband3400MHzto3600MHz".[7]ERCRecommendation12-05:"Harmonizedradiofrequencychannelarrangementsfordigitalterrestrialfixedsystemsoperatingintheband10,0to10,68GHz".[8]ETS300019:"Equipmentengineering(EE);Environmentalconditionsandenvironmentaltestsfortelecommunicationequipment;Part1-3:Classificationofenvironmentalconditions;StationaryuseatweatherprotectedlocationsandPart1-4:ClassificationofenvironmentalconditionsStationaryuseatnon-weatherprotectedlocations".[9]ETS300132:"Equipmentengineering(EE);Powersupplyinterfaceattheinputtotelecommunicationsequipment".[10]EN300385:"EMCandRadiospectrumMatters(ERM);ElectroMagneticCompatibility(EMC)standardforfixedradiolinksandancillaryequipment".[11]Void.[12]ITU-TRecommendationG.773:"ProtocolsuitesforQ-interfacesformanagementoftransmissionsystems".[13]ITU-TRecommendationG.810:"Definitionsandterminologyforsynchronizationnetworks".[14]ITU-TRecommendationG.812:"Timingrequirementsattheoutputofslaveclockssuitableforplesiochronousoperationofinternationaldigitallinks".[15]ITU-TRecommendationG.823:"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthe2048kbit/shierarchy".SIST EN 301 080 V1.2.1:2003
ETSIETSIEN301080V1.2.1(2000-02)9[16]ITU-TRecommendationG.813:"TimingcharacteristicsofSDHequipmentslaveclocks(SEC)".[17]ITU-TRecommendationG.825:"Thecontrolofjitterandwanderwithindigitalnetworkswhicharebasedonthesynchronousdigitalhierarchy(SDH)".[18]EN300833:"FixedRadioSystems;PointtoPointAntennas;Antennasforpoint-to-pointfixedradiosystemsoperatinginthefrequencyband3GHzto60GHz".[19]EN302085:"FixedRadioSystems;Point-to-MultipointAntennas;Antennasforpoint-to-multipointfixedradiosystemsinthe3GHzto11GHzband".[20]ITU-TRecommendationG.703:"Physical/electricalcharacteristicsofhierarchicaldigitalinterfaces".[21]ITU-TRecommendationG.131:"Controloftalkerecho".[22]ITU-TRecommendationG.711:"Pulsecodemodulation(PCM)ofvoicefrequencies".[23]ITU-TRecommendationG.726:"40,32,24,16kbit/sadaptivedifferentialpulsecodemodulation(ADPCM)".[24]ITU-TRecommendationG.728:"Codingofspeechat16kbit/susinglow-delaycodeexcitedlinearprediction".[25]ITU-TRecommendationG.729:"Codingofspeechat8kbit/susingconjugate-structurealgebraic-code-excitedlinear-prediction".[26]ITU-TRecommendationO.151:"Errorperformancemeasuringequipmentoperatingattheprimaryrateandabove".[27]ITU-TRecommendationO.181:"EquipmenttoassesserrorperformanceonSTM-Ninterfaces".[28]ITU-RRecommendationSM.329-7:"SpuriousEmissions".[29]CEPT/ERCRecommendation74-01:"SpuriousEmissions".[30]ITU-TRecommendationQ.552:"Transmissioncharacteristicsat2-wireanalogueinterfacesofdigitalexchanges".[31]ITU-TRecommendationQ.553:"Transmissioncharacteristicsat4-wireanalogueinterfacesofdigitalexchanges".[32]ITU-TRecommendationR.20:"Telegraphmodemforsubscriberlines".[33]ITU-TRecommendationV.-series:"Datacommunicationoverthetelephonenetwork".[34]ITU-TRecommendationX.-series:"Datanetworksandopensystemcommunication".[35]ITU-TRecommendationG.961:"DigitaltransmissionsystemonmetalliclocallinesfortheISDNbasicrateaccess".[36]ETS300012:"IntegratedServicesDigitalNetwork(ISDN);Basicuser-networkinterface;Layer1specificationandtestprinciples".[37]ETS300011:"IntegratedServicesDigitalNetwork(ISDN);Primaryrateuser-networkinterface;Layer1specificationandtestprinciples".[38]ITU-TRecommendationG.962:"AccessdigitallinesectionforISDNprimaryrateat2
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