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SIST EN 300 765-1 V1.3.1:2003

(Main)

Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 1: Basic telephony services

Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 1: Basic telephony services

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Digitalne izboljšane brezvrvične telekomunikacije (DECT) – Profil dostopa (RAP) radia v krajevni zanki (RAP) – 1. del: Osnovne telefonske storitve

General Information

Status
Published
Publication Date
30-Nov-2003
ICS
33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
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
Ref Project
ETSI EN 300 765-1 V1.3.1 (2001-04) - Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 1: Basic telephony services

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EN 300 765-1 V1.3.1:2003EN 300 765-1 V1.3.1:2003
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EN 300 765-1 V1.3.1:2003
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HDigital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 1: Basic telephony services33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 765-1 Version 1.3.1SIST EN 300 765-1 V1.3.1:2003en01-december-2003SIST EN 300 765-1 V1.3.1:2003SLOVENSKI
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SIST EN 300 765-1 V1.3.1:2003



ETSIEN300765-1V1.3.1(2001-04)EuropeanStandard(Telecommunicationsseries)DigitalEnhancedCordlessTelecommunications(DECT);RadiointheLocalLoop(RLL)AccessProfile(RAP);Part1:BasictelephonyservicesSIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)2ReferenceREN/DECT-A0173-1KeywordsDECT,FWA,RLL,WLLETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitions,symbolsandabbreviations.83.1Definitions.83.2Symbols.103.3Abbreviations.104Introduction.114.1Referencemodel.114.2Services&facilities.125Featuredefinitions.125.1Network(NWK)features(onlydifferencesfromGAP).125.2Applicationfeatures(onlydifferencesfromGAP).136Servicedefinitions.136.1DataLinkControl(DLC)servicedefinitions.136.1.1ReferencetoGAP.136.1.2LU7service.136.2MediumAccessControl(MAC)servicedefinitions.146.2.1ReferencetoGAP.146.2.2MACservicedefinitions(additionaltoGAP).147Interoperabilityrequirements.147.1General.147.2NWKfeatures.157.3DLCservices.167.4MACservices.167.5PhysicalLayer(PHL)services.177.6Applicationfeatures.177.7NWKfeaturetoproceduremapping.177.8DLCservicetoproceduremapping.217.9MACservicetoproceduremapping.227.10Applicationfeaturetoproceduremapping.237.11Generalrequirements.238Proceduredescription.239NWKlayerprocedures.239.1ReferencetoGAP.239.1.1Releaseprocedurefor"On-hook(conditionalrelease)".239.1.2CLIP,inband.259.1.3On-hook/off-hookexplicitacknowledgement.269.2Maintenancecalls.279.2.1Incomingmaintenancecall.279.2.2Outgoingmaintenancecall.279.2.3Outgoingcallduringmaintenancecall.279.2.4Incomingcallduringmaintenancecall.279.3SendingOA&Minformation.279.3.1Physicalresourcesfault.289.3.2Remotetest.289.3.3Alarms.289.3.4On-airmodificationofuserparameters.299.3.4.1Modificationofexistingusersparameters.299.3.4.2Additionalsubscriptionstothesamefixedpart.30SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)49.3.4.3DerivationofACforadditionalsubscriptions.309.3.5Startqualitymeasurement.319.3.6Stopqualitymeasurement.319.3.7Remoteconfiguration.319.3.8ClaimActions.329.3.8.1ClaimActionsFTsideInitiated.329.3.8.2ClaimActionsCTAInitiated.339.3.9Remoteresynchronization.349.3.10Advancedfiletransfer.349.4RLL-CC.359.4.1Meteringpulses.359.4.2SwitchfromvoicetodataserviceFTinitiated.369.4.3SwitchfromvoicetodataserviceCTAinitiated.369.4.4Coincollection.369.4.5Groundstart.379.4.6Linepolarityreversal.379.4.7Switchfrom32kbit/sto64kbit/sbearerservice(FTinitiated).379.4.8Switchingfrom32kbit/sto64kbit/sbearerserviceCTAinitiated.399.4.9Lineparked.419.4.10Switchingfrom64kbit/sto32kbit/sbearerserviceFTinitiated.419.4.11Switchingfrom64kbit/sto32kbit/sbearerserviceCTAinitiated.439.5Analogueleasedlineestablishment.4410DLClayerprocedures.4510.1General.4510.2ReferencetoGAP.4510.3LU764kbit/sdatabearerservice.4511MAClayerprocedures.4511.1ReferencetoGAP.4511.2Advancetiming.4511.3LU764kbit/sdatabearerservice.4611.4Downlinkbroadcast,ExtendedFixedPartCapabilities.4611.5Blindslotinformation.4611.6Improvedchannelselectionrules.4712Physicallayerrequirements.4712.1General.4712.2ReferencetoGAP.4712.3LU764kbit/sdatabearerservice.4713Requirementsregardingthespeechtransmission.4713.1General.4713.2EchocontrolrequirementsforCTAsintendedfor2-wireconnections.4713.3Disablingtheechocontrolfunctions.4813.3.1General.4813.3.2Modemservices.4814Requirementsregardingfaxanddatatransmission.4814.1General.4814.2Requirements.4814.2.1ImplementationoftheLU7PCMservices.4815Managementprocedures.4916InterworkingwithWRSapplications.4916.1General.4916.2Requirements.4916.3WRSmaintenancecalls.4916.3.1IncomingWRSmaintenancecall.4916.3.2OutgoingWRSmaintenancecall.4916.3.3MaintenanceduringWRSMMoperation.4917Applicationprocedures.5017.1General.50SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)517.2ReferencetoGAP.5017.3ManualentryofthePARKandACtoCTA's.5017.3.1EnteringthePARK.5017.3.2EnteringtheAC.51AnnexA(informative):PPlockingprocedureforonairsubscription.52AnnexB(informative):Tones,progressindicatorandU-planeconnection.53AnnexC(informative):Void.54AnnexD(normative):Codingsfor"OA&M"and"RAP-CC"messages.55D.1GeneralStructureforRAP<>InformationElement.55D.2RAPIWU-TO-IWUContentsProprietary.56D.2.1RAP-OA&MServicetypecoding.56D.3RAPIWU-TO-IWUContentsStandardized.57D.3.1RAP-CCServicetypecoding.57D.3.2RAP-OA&MServicetypecoding.58AnnexE(informative):Descriptionofremotetestsandqualitymeasurement.60AnnexF(informative):LU8service.61F.1Physicallayerservice.61F.2MAClayerservice.61F.3DLClayerservice.61AnnexG(normative):SynchronizationRequirementsforFixedParts.62AnnexH(normative):Managementoftheoverlappingbetweendecadicdiallingandregisterrecallrecognitiontimes.63AnnexI(informative):Installation.64I.1Aboveroof-topDECTWLLsystemsandGSM1800macrocellsystems.64History.65SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbyETSIProjectDigitalEnhancedCordlessTelecommunications(DECT).Thepresentdocumentispart1ofamulti-partdeliverablecoveringtheRadiointheLocalLoop(RLL)AccessProfile(RAP),asidentifiedbelow:Part1:"Basictelephonyservices";Part2:"Advancedtelephonyservices".EveryENpreparedbyETSIisavoluntarystandard.Thepresentdocumentmaycontaintextconcerningconformancetestingoftheequipmenttowhichitrelates.Thistextshouldbeconsideredasguidanceonlyanddoesnotmakethepresentdocumentmandatory.ThepresentdocumentisbasedonEN300175,parts1to8[1]to[8]andEN300444[10].ThepresentdocumenthasbeendevelopedinaccordancetotherulesofdocumentingaprofilespecificationasdescribedinISO/IEC9646-6[12].NationaltranspositiondatesDateofadoptionofthisEN:6April2001DateoflatestannouncementofthisEN(doa):31July2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2002DateofwithdrawalofanyconflictingNationalStandard(dow):31January2002SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)71ScopeThepresentdocumentspecifiesthatsetoftechnicalrequirementsforDigitalEnhancedCordlessTelecommunications(DECT)FixedPart(FP)andDECTCordlessTerminalAdapter(CTA)necessaryforthesupportoftheRadiointheLocalLoop(RLL)AccessProfile(RAP).TheobjectiveofthepresentdocumentistoensuretheairinterfaceinteroperabilityofDECTRAPCTAsandDECTRAPFPsandWirelessRelayStations(WRS)ifapplied.Inaddition,thepresentdocumentdefinesthefeatures,services,proceduresetc.fortheCTAandtheFT,whichareprovisionmandatoryeitherintheCTAorintheFT,aswellassomeelementsthatareprovisionoptionalbutstillprocessmandatory.AnotherobjectiveistouseasmuchaspossiblefromtheexistingGAPprofile,buttoexcludethenotapplicableGAP-features.ThereforemostoftheRAPfeaturesrefertoGAPfeaturesEN300444[10]andthenecessaryadditionalfeatures(forexampleOperation,Administration,andMaintenance(OA&M))arelistedandexplainedinthepresentdocument.Thepresentdocumentcontainstheso-called"PlainOldTelephoneService(POTS)"servicesincludingleasedlinesand64kbit/sbearerservice.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIEN300175-1:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part1:Overview".[2]ETSIEN300175-2:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part2:PhysicalLayer(PHL)".[3]ETSIEN300175-3:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part3:MediumAccessControl(MAC)Layer".[4]ETSIEN300175-4:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part4:DataLinkControl(DLC)Layer".[5]ETSIEN300175-5:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part5:Network(NWK)Layer".[6]ETSIEN300175-6:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part6:IdentitiesandAddressing".[7]ETSIEN300175-7:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part7:SecurityFeatures".[8]ETSIEN300175-8:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part8:SpeechCodingandTransmission".[9]ETSIEN300176(allparts):"DigitalEnhancedCordlessTelecommunications(DECT);ApprovalTestSpecification".SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)8[10]ETSIEN300444:"DigitalEnhancedCordlessTelecommunications(DECT);GenericAccessProfile(GAP)".[11]ETSIEN300700:"DigitalEnhancedCordlessTelecommunications(DECT);WirelessRelayStation(WRS)".[12]ISO/IEC9646-6:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part6:Protocolprofiletestspecification".[13]ISO/IEC9646-7:"Informationtechnology-OpenSystemsInterconnection-Conformancetestingmethodologyandframework-Part7:ImplementationConformanceStatements".[14]ETSIETR246:"DigitalEnhancedCordlessTelecommunications(DECT);ApplicationofDECTWirelessRelayStations(WRS)".[15]ETSIETR308:"DigitalEnhancedCordlessTelecommunications(DECT);Services,facilitiesandconfigurationsforDECTinthelocalloop".[16]ITU-TRecommendationV.25:"Automaticansweringequipmentandgeneralproceduresforautomaticcallingequipmentonthegeneralswitchedtelephonenetworkincludingproceduresfordisablingofechocontroldevicesforbothmanuallyandautomaticallyestablishedcalls".[17]ITU-TRecommendationG.164:"Echosuppressors".[18]ITU-TRecommendationG.165:"Echocancellers".[19]CEPTRecommendationT/R22-02:"FrequencybandtobedesignatedfortheEuropeandigitalcordlesstelecommunicationsystem(DECT)".3Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:authentication:processwherebyaDECTsubscriberispositivelyverifiedtobealegitimateuserofaparticularFPNOTE1:Authenticationisgenerallyperformedatcallset-up,butmayalsobedoneatanyothertime(e.g.duringacall).bearerservice:typeoftelecommunicationservicethatprovidesadefinedcapabilityforthetransmissionofsignalsbetweenuser-networkinterfacesNOTE2:TheDECTuser-networkinterfacecorrespondstothetopofthenetworklayer(layer3).C-plane:thecontrolplaneoftheDECTprotocolstacks,whichcontainsalloftheinternalDECTprotocolcontrol,butmayalsoincludesomeexternaluserinformationNOTE3:TheC-planestackalwayscontainsprotocolentitiesuptoandincludingthenetworklayer.call:alloftheNWKlayerprocessesinvolvedinonenetworklayerpeer-to-peerassociationNOTE4:Callmaysometimesbeusedtorefertoprocessesofalllayers,sincelowerlayerprocessesareimplicitlyrequired.CordlessTerminalAdapter(CTA):physicalgroupingthatcontainsaDECTportableterminationandalineinterfaceDECTnetwork:networkthatusestheDECTairinterfacetointerconnectalocalnetworktooneormoreportableapplications.ThelogicalboundariesoftheDECTnetworkaredefinedtobeatthetopoftheDECTnetworklayerNOTE5:ADECTnetworkisalogicalgroupingthatcontainsoneormorefixedradioterminationsplustheirassociatedportableradiotermination.TheboundariesoftheDECTnetworkarenotphysicalboundaries.SIST EN 300 765-1 V1.3.1:2003



ETSIETSIEN300765-1V1.3.1(2001-04)9FixedPart(DECTFixedPart)(FP):physicalgroupingthatcontainsalloftheelementsintheDECTnetworkbetweenthelocalnetworkandtheDECTairinterfaceNOTE6:ADECTFPcontainsthelogicalelementsofatleastoneFT,plusadditionalimplementationspecificelements.FixedRadioTermination(FT):logicalgroupoffunctionsthatcontainsalloftheDECTprocessesandproceduresonthefixedsideoftheDECTairinterfaceNOTE7:AFTonlyincludeselementsthataredefinedintheDECTCIstandard.Thisincludesradiotransmissionelementstogetherwithaselectionoflayer2andlayer3elements.NOTE8:AFTcanalsobetheFTsideofaWRS.handover:processofswitchingacallinprogressfromonephysicalchanneltoanotherphysicalchannelNOTE9:Therearetwophysicalformsofhandover,intra-cellhandoverandinter-cellhandover.incomingcall:callreceivedataCTAinter-cellhandover:switchingofacallinprogressfromonecelltoanothercellinternalhandover:handoverprocessesthatarecompletelyinternaltooneFT.Internalhandoverreconnectsthecallatthelowerlayers,whilemaintainingthecallattheNWKlayer.NOTE10:ThelowerlayerreconnectioncaneitherbeattheDLClayer(connectionhandover)orattheMAClayer(bearerhandover).interoperability:capabilityofFPsandCTAs,thatenableaCTAtoobtainaccesstoteleservicesinmorethanonelocationareaand/orfrommorethanoneoperator(morethanoneserviceprovider)intra-cellhandover:switchingofacallinprogressfromonephysicalchannelofonecelltoanotherphysicalchannelofthesamecellLocalExchange:localswitchconnectingtheend-usertothepublicnetworkLocalNetwork(LNW):telecommunicationnetworkcapableofofferinglocaltelecommunicationservicesNOTE11:Thetermdoesnotincludelegalorregulatoryaspects,nordoesitindicateifthenetworkisapublicnetworkoraprivatenetwork.locationarea:thedomaininwhichaPPmayreceive(and/ormake)callsasaresultofasinglelocationregistrationlocationregistration:theprocesswherebythepositionofaDECTPTisdeterminedtothelevelofonelocationarea,andthispositionisupdatedinoneormoredatabasesNOTE12:ThesedatabasesarenotincludedwithinaDECTFT.MACConnection(CONNECTION):associationbetweenonesourceMACMulti-BearerControl(MBC)entityandonedestinationMACMBCentity.ThisprovidesasetofrelatedMACservices(asetoflogicalchannels),anditcaninvolveoneormoreunderlyingMACbearersoutgoingcall:calloriginatingfromaPPPortableApplication(PA):logicalgroupingthatcontain
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Digital Enhanced Cordless Telecommunications (DECT); Low Rate Messaging Service (LRMS) including Short Messaging Service (SMS)
ETSI EN 300 757 V1.5.1 (2004-09)

The Low Rate Messaging Service (LRMS), specified in the present document, provides a means for the slow, acknowledged or unacknowledged, transfer of multimedia message objects, including the Short Message Service (SMS). It provides both point-to-point and point-to-multipoint messaging. This service may be used for private and public roaming applications. The present document defines the requirements on the Physical (PHY), Medium Access Control (MAC), Data Link Control (DLC) and Network (NWK) layers of DECT. The present document also specifies management entity requirements and generic interworking conventions, which ensure the efficient use of the DECT spectrum. The present document further mandates how to implement a GSM like Short Message Service (SMS), Point-to-point (PTP), which uses a sub-set of the Low Rate Messaging Service (LRMS) mentioned before as a bearer service.
SMS-PTP includes the following two services:
- SMS Mobile Originated (SMS-MO), for transport of short messages from PT to FT;
- SMS Mobile Terminated (SMS-MT), for transport of short messages from FT to PT.
Definition of Point-To-Multipoint (PTM) SMS is outside the scope of the present document. In order to facilitate re-use of excising GSM Service Centres, the present document applies the upper GSM protocols up-to and including the GSM SMS-RP protocol. Therefore, interworking functions handling the encapsulation of GSM SMS-RP messages are specified. The SMS or LRMS applications are outside the scope of the present document. So is the network behind the FP. Any information provided concerning applications or the network behind the FP is provided for informative, descriptive reasons only.

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SIST
SIST EN 300 175-6 V1.8.1:2006(Main)
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 6: Identities and addressing
ETSI EN 300 175-6 V1.8.1 (2004-11)

The present document gives an introduction and overview of the complete Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). The present document specifies the identities and addressing structure of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). There are four categories of identities to be used for identification and addressing in a general DECT environment.
These four categories are:
- Fixed Part (FP) identities;
- Portable Part (PP) identities;
- connection-related identities;
- equipment-related identities.
Fixed part identities and portable part identities are used for:
- access information from fixed parts to portable parts;
- access requests from portable parts;
- identification of portable parts;
- identification of fixed parts and radio fixed parts;
- paging;
- billing.
These identities support:
- different environments, such as residential, public or private;
- supply to manufacturers, installers, and operators of globally unique identity elements with a minimum of central administration;
- multiple access rights for the same portable;
- large freedom for manufacturers, installers, and operators to structure the fixed part identities, e.g. to facilitate provision of access rights to groups of DECT systems;
- roaming agreements between DECT networks run by the same or different owners/operators;
- indication of handover domains;
- indication of location areas, i.e. paging area;
- indication of subscription areas of a public service.
The present document also provides for length indicators and other messages that can override the default location and/or paging area and domain indications given by the structure of the identities.
Connection related identities are used to identify the protocol instances associated with a call and are used for peer-to-peer communication. Equipment related identities are used to identify a stolen PP and to derive a default identity coding for PP emergency call set-up.
Coding of identity information elements for higher layer messages is found in EN 300 175-5 [5], clause 7.7.
User authentication and ciphering need additional key information and is outside the scope of the present document, but is covered in other parts of EN 300 175 parts 1 to 8 [1] to [7], e.g. part 7.

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SIST
SIST EN 300 175-8 V1.9.1:2006(Main)
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 8: Speech coding and transmission
ETSI EN 300 175-8 V1.9.1 (2005-09)

The present document gives an introduction and overview of the complete Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). This part of the DECT CI specifies the speech coding and transmission requirements. In order to ensure satisfactory interworking of different portable and fixed units, it is necessary to specify the transmission performance of the analogue information over the digital link. This requires not only use of a common speech algorithm, but also standardization of frequency responses, reference speech levels (or loudness) at the air interface and various other parameters. The present document applies to DECT equipment which includes all the necessary functions to provide real-time two-way speech conversation. A 3,1 kHz telephony teleservice conveyed over a DECT link (including Fixed Part (FP) and Portable Part (PP)) which is capable of being connected (directly or indirectly) to the public network access point should comply with the requirements in the present document. Tethered fixed point local loop applications are not required to comply with the requirements of the present document. The speech performance characteristics defined in the present document typically conform to TBR 008 (see bibliography), which specifies the overall performance between the handset acoustic interface and a 64 kbit/s A-law Pulse Code Modulated (PCM) digital network interface. The deviations from TBR 008 are mainly due to the consequences of non-PCM coding and transmission delay.
The additional features described in clause 8 are those which are not included in TBR 008, but which are likely to occur in a DECT system: analogue interface, loudspeaking and hand-free facilities, tandeming with a mobile radio network. Headsets are not covered by the present specifications. For the DECT systems which connect to the Public Switched Telephone Network (PSTN) via an analogue interface, the additional requirements, which are implemented in the FP, have as much as possible been aligned with TBR 038 (see bibliography).
A summary of the control and the use of the DECT echo control functions, to guide on need for options to manufacturers and installers, is found in annex A. Information concerning test methods can be found in EN 300 176 [3]. The test methods take into account that DECT is a digital system.

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