SIST EN 300 434-2 V1.2.1:2003

• Abstract:

  Implementation of pending changes requests

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• 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 300 434-2 V1.2.1 (2001-08) - Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Part 2: Access profile

Overview

SIST EN 300 434-2 V1.2.1:2003 defines the access profile for interworking between Digital Enhanced Cordless Telecommunications (DECT) and Integrated Services Digital Network (ISDN) systems. Developed by the Slovenian Institute for Standardization (SIST) and identical to ETSI EN 300 434-2 V1.2.1, this European Standard specifies the technical requirements for DECT Fixed Parts (FPs) and Portable Parts (PPs) to support ISDN-DECT Access Service (IAS). This part of the standard focuses on the procedures and feature sets required for end system configuration, ensuring interoperability for accessing ISDN services via DECT.

This document also covers the implementation of pending change requests, ensuring alignment with the latest requirements for access profiles in DECT/ISDN interworking scenarios.

Key Topics

The standard addresses several key areas crucial to DECT/ISDN interoperability:

• Technical requirements for DECT Fixed and Portable Parts (FP/PP): Defines hardware and software expectations for device conformance and service support.
• ISDN Access Service (IAS): Outlines how DECT systems interface with ISDN networks to provide end users with digital telecommunication services.
• Feature set for access profile: Specifies both mandatory and optional features, such as outgoing/incoming calls, support for speech and data, supplementary services (e.g., call holding, call forwarding, conference calls), and the handling of display characters.
• Layered architecture requirements: Details network (NWK), Data Link Control (DLC), Medium Access Control (MAC), and Physical Layer (PHL) requirements to maintain consistent interworking behavior.
• Procedures and message mapping: Establishes the sequences and structures required for reliable communication and feature utilization.

Applications

The practical value of SIST EN 300 434-2 V1.2.1:2003 lies in its ability to support multiple real-world deployments, including:

• Enterprise communication systems: Ensures seamless connection of cordless DECT handsets and base stations to ISDN-based PBXs and public networks, facilitating reliable voice and data services within businesses.
• Multivendor interoperability: By defining clear access profiles, the standard enables equipment from different manufacturers to operate together in mixed DECT/ISDN environments.
• Enhanced supplementary services: Supports advanced ISDN features such as calling line identification (CLIP/CLIR), call transfer, hold, conferencing, call deflection, call forwarding, and more, increasing the range and quality of services available to users.
• Flexible network design: Guides system integrators and telecom engineers in designing scalable and robust networks for residential, commercial, or public sector use, leveraging both DECT mobility and ISDN’s digital service capabilities.
• Migration and hybrid solutions: Assists operators in maintaining compatibility during transitions between legacy ISDN infrastructure and modern IP or wireless systems by acting as a bridge via DECT.

Related Standards

To ensure consistent implementation and compatibility, SIST EN 300 434-2 V1.2.1:2003 references several related standards:

• EN 300 434-1: Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); Interworking specification.
• EN 300 175 series: DECT Common Interface, covering:
  • Part 2: Physical Layer (PHL)
  • Part 3: Medium Access Control (MAC)
  • Part 4: Data Link Control (DLC)
  • Part 5: Network (NWK) Layer
  • Part 8: Speech coding and transmission
• ITU-T Recommendation G.726: Adaptive Differential Pulse Code Modulation for speech codecs.
• EN 300 176: DECT approval test specification

These referenced standards work together to facilitate the implementation of DECT/ISDN interworking for consistent end system configurations and access profiles across Europe.

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Keywords: DECT, ISDN, access profile, interoperability, supplementary services, telecommunications standard, digital cordless, network layer, portable part, fixed part, SIST, ETSI, European Standard.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Part 2: Access profile33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 434-2 Version 1.2.1SIST EN 300 434-2 V1.2.1:2003en01-december-2003SIST EN 300 434-2 V1.2.1:2003SLOVENSKI
STANDARD
ETSIEN300434-2V1.2.1(2001-08)EuropeanStandard(Telecommunicationsseries)DigitalEnhancedCordlessTelecommunications(DECT);IntegratedServicesDigitalNetwork(ISDN);DECT/ISDNinterworkingforendsystemconfiguration;Part2:AccessprofileSIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)2ReferenceREN/DECT-A0196-2KeywordsDECT,interworking,ISDN,radioETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°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:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitionsandabbreviations.73.1Definitions.73.2DECTabbreviationsandacronyms.93.3ISDNabbreviationsandacronyms.104FeaturesfortheISDN-DECTaccessservice.114.1Descriptionofthefeatures.114.1.1Outgoingcall(feature0).114.1.2Speech(feature1).114.1.3Off-hook(feature4).114.1.4On-hook-fullrelease(feature5).114.1.5Dialleddigits-basic(feature7).114.1.6Dialleddigits-additional(feature8).114.1.7Diallingdelimiter(feature9).114.1.8Incomingcall(feature16).114.1.9Controlofsupervisorytones(feature26).114.1.10Signallingofdisplaycharacters(feature28).114.1.11Selectionofrequiredteleservice(feature52).114.1.12Selectionofbearerservice(feature53).124.1.13Voicebanddatacapability(feature60).124.1.14Keypadprotocolforsupplementaryservices(feature61).124.1.1564kbit/sunrestricteddigitalinformation(feature75).124.1.16Overlapsending-outgoingcall(feature77).124.1.17FunctionalsupplementaryserviceCallingLineIdentificationPresentation(CLIP)(feature101).124.1.18FunctionalsupplementaryserviceCallingLineIdentificationRestriction(CLIR)(feature102).124.1.19FunctionalsupplementaryserviceCOnnectedLineidentificationPresentation(COLP)(feature103).124.1.20FunctionalsupplementaryserviceCOnnectedLineidentificationRestriction(COLR)(feature104).124.1.21FunctionalsupplementaryserviceMultipleSubscriberNumber(MSN)(feature105).124.1.22FunctionalsupplementaryserviceDirectDiallingIn(DDI)(feature106).124.1.23FunctionalsupplementaryserviceSUBaddressing(SUB)(feature107).134.1.24FunctionalsupplementaryserviceCallWaiting(CW)(feature108).134.1.25FunctionalsupplementaryserviceHOLD(feature109).134.1.26FunctionalsupplementaryserviceClosedUserGroup(CUG)(feature110).134.1.27FunctionalsupplementaryserviceAdviceOfCharge(AOC)(feature111).134.1.28FunctionalsupplementaryserviceMaliciousCallIDentification(MCID)(feature112).134.1.29FunctionalsupplementaryserviceConferencecall,add-on(CONF)(feature113).134.1.30FunctionalsupplementaryserviceThreeparty(3PTY)(feature114).134.1.31FunctionalsupplementaryserviceCallDeflection(CD)(feature115).134.1.32FunctionalsupplementaryserviceUUSservice1(UUS1)(feature116).134.1.33FunctionalsupplementaryserviceUUSservice2(UUS2)(feature117).134.1.34FunctionalsupplementaryserviceUUSservice3(UUS3)(feature118).144.1.35FunctionalsupplementaryserviceExplicitCallTransfer(ECT)(feature119).144.1.36FunctionalsupplementaryserviceCompletionofCallstoBusySubscriber(CCBS)(feature120).144.1.37FunctionalsupplementaryserviceFreePhone(FPH)(feature121).144.1.38FunctionalsupplementaryserviceMeet-MeConference(MMC)(feature122).144.1.39Functionalsupplementaryservice"CallForwarding"(CF)(feature123).145RequirementsregardingtheNetwork(NWK)layer.145.1Summaryoffeaturesandrelatedprocedures.155.2Procedures.165.3Mappingofthefeaturesontotheprocedures.18SIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)45.3.1Outgoingcall(feature0).185.3.2Duplexspeech(feature1).185.3.3Off-hook(feature4).185.3.4On-hook-fullrelease(feature5).185.3.5Dialleddigits-basic(feature7).195.3.6Dialleddigits-additional(feature8).195.3.7Diallingdelimiter(feature9).195.3.8Incomingcall(feature16).195.3.9Controlofsupervisorytones(feature26).195.3.10Signallingofdisplaycharacters(feature28).195.3.11Selectionofrequiredteleservice(feature52).195.3.12Selectionofbearerservice(feature53).195.3.13Voicebanddatacapability(feature60).195.3.14Keypadprotocolforsupplementaryservices-CRSS(feature61a).205.3.1564kbit/sunrestricteddigitalinformation(feature75).205.3.16Overlapsending-outgoingcall(feature77).205.3.17FunctionalsupplementaryserviceCLIP(feature101).205.3.18FunctionalsupplementaryserviceCLIR(feature102).205.3.19FunctionalsupplementaryserviceCOLP(feature103).205.3.20FunctionalsupplementaryserviceCOLR(feature104).205.3.21FunctionalsupplementaryserviceMSN(feature105).205.3.22FunctionalsupplementaryserviceDDI(feature106).205.3.23FunctionalsupplementaryserviceSUB(feature107).205.3.24FunctionalsupplementaryserviceCW(feature108).215.3.25FunctionalsupplementaryserviceHOLD(feature109).215.3.26FunctionalsupplementaryserviceCUG(feature110).215.3.27FunctionalsupplementaryserviceAOC(feature111).215.3.28FunctionalsupplementaryserviceMCID(feature112).215.3.29FunctionalsupplementaryserviceCONF(feature113).215.3.30Functionalsupplementaryservice3PTY(feature114).215.3.31FunctionalsupplementaryserviceCD(feature115).215.3.32FunctionalsupplementaryserviceUUS1(feature116).215.3.33FunctionalsupplementaryserviceUUS2(feature117).215.3.34FunctionalsupplementaryserviceUUS3(feature118).225.3.35FunctionalsupplementaryserviceECT(feature119).225.3.36FunctionalsupplementaryserviceCCBS(feature120).225.3.37FunctionalsupplementaryserviceFPH(feature121).225.3.38FunctionalsupplementaryserviceMMC(feature122).225.3.39FunctionalsupplementaryserviceCF(feature123).226RequirementsregardingtheDLClayer.226.1Controlplane.226.1.1Minimumrequirements.226.1.2Incomingcall(feature16).226.2Userplane.237MAClayerrequirements.237.1MAClayerservices.237.1.1Connectionorientedservices.237.1.2Broadcastservices.237.2MAClayerprocedures.237.2.1Connectionorientedserviceprocedures.237.2.1.1General.237.3Requiredmessages.247.3.1Headerfield.247.3.2Messagesinthetailfield.247.3.2.1Identitiesinformation(NTtail).247.3.2.2Systeminformationandmultiframemarker(QTtail).247.3.2.3Paging(PTtail).257.3.2.4MACcontrol(MTtails).257.3.3MessagesintheB-field.257.4Monitoringofspeechquality.25SIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)58RequirementsregardingthePHLlayer.268.1General.269Requirementsregardingthespeechtransmission.269.1General.26AnnexA(informative):Bibliography.27History.28SIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)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).FurtherdetailsoftheDECTsystemmaybefoundinETR043andTR101178.Thepresentdocumentispart2ofamulti-partdeliverablecoveringtheDigitalEnhancedCordlessTelecommunications(DECT);IntegratedServicesDigitalNetwork(ISDN)interworkingforendsystemconfiguration,asidentifiedbelow:Part1:"Interworkingspecification";Part2:"Accessprofile".NationaltranspositiondatesDateofadoptionofthisEN:10August2001DateoflatestannouncementofthisEN(doa):30November2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31May2002DateofwithdrawalofanyconflictingNationalStandard(dow):31May2002SIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)71ScopeThepresentdocumentspecifiesthesetoftechnicalrequirementsforDECTFixedParts(FPs)andPortableParts(PPs)necessaryforthesupportoftheISDN-DECTAccessService(IAS).ApparatusclaiminginteroperabilitybaseduponthisIAPhastofullycomplywiththeprocessmandatorytechnicalrequirements,andthoseforoptionalfeaturessofarastheyareprovidedforinthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIEN300175-2:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part2:PhysicalLayer(PHL)".[2]ETSIEN300175-3:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part3:MediumAccessControl(MAC)layer".[3]ETSIEN300175-4:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part4:DataLinkControl(DLC)layer".[4]ETSIEN300175-5:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part5:Network(NWK)layer".[5]ETSIEN300175-8:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part8:Speechcodingandtransmission".[6]ITU-TRecommendationG.726(1990):"40,32,24,16kbit/sAdaptiveDifferentialPulseCodeModulation(ADPCM)".[7]ETSIEN300176:"DigitalEnhancedCordlessTelecommunications(DECT);Approvaltestspecification".[8]ETSIEN300434-1:"DigitalEnhancedCordlessTelecommunications(DECT);IntegratedServicesDigitalNetwork(ISDN);DECT/ISDNinterworkingforendsystemconfiguration;Part1:Interworkingspecification".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:bearerservice:typeoftelecommunicationservicethatprovidesadefinedcapabilityforthetransmissionofsignalsbetweenuser-networkinterfacesbroadcast:simplexpoint-to-multipointmodeoftransmissionSIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)8C-plane:controlplaneoftheDECTprotocolstacks,whichcontainsalloftheinternalDECTprotocolcontrol,butmayalsoincludesomeexternaluserinformationNOTE1:TheC-planestackalwayscontainsprotocolentitiesuptoandincludingtheNetwork(NWK)layer.call:alloftheNWKlayerprocessesinvolvedinoneNWKlayerpeer-to-peerassociationNOTE2:Callmaysometimesbeusedtorefertoprocessesofalllayers,sincelowerlayerprocessesareimplicitlyrequired.DECTFixedSystem(DFS):logicalgroupingthatcontainsallthefunctionsbetweentheDECTDreferencepointandthereferencepointonthefixedsideoftheDECTairinterfaceNOTE3:TheDECTFixedSystem(DFS)=FT+(localnetworkuptothefixedsideISDNreferencepoint(includingfixedsideIWU)).DECTNetwork(DNW):networkthatusestheDECTairinterfacetointerconnectalocalnetworktooneormoreportableapplications.ThelogicalboundariesoftheDECTnetworkaredefinedtobeatthetopoftheDECTNWKlayerNOTE4:ADNWisalogicalgroupingthatcontainsoneormorefixedradioterminationsplustheirassociatedPT.TheboundariesoftheDECTnetworkarenotphysicalboundaries.DECTPortableSystem(DPS):logicalgroupingthatcontainsallthefunctionsbetweentheDECTDreferencepointandtheuserinterfaceontheportablesideoftheDECTairinterfaceNOTE5:TheDPS=PT+(PortableApplication(PA)).EndSystem(ES):logicalgroupingthatcontainsapplicationprocessesandsupportstelecommunicationservicesNOTE6:FromtheOSIpointofview,endsystemsareconsideredassourcesandsinksofinformation.FixedPart(DECTFixedPart)(FP):physicalgroupingthatcontainsalloftheelementsintheDECTnetworkbetweenthelocalnetworkandtheDECTairinterfaceNOTE7:ADECTFPcontainsthelogicalelementsofatleastoneFT,plusadditionalimplementationspecificelements.FixedradioTermination(FT):logicalgroupoffunctionsthatcontainsalloftheDECTprocessesandproceduresonthefixedsideoftheDECTairinterfaceNOTE8:AFTonlyincludeselementsthataredefinedintheDECTCIstandard.Thisincludesradiotransmissionelementstogetherwithaselectionoflayer2andlayer3elements.GlobalNetwork(GNW):telecommunicationnetworkcapableofofferingalongdistancetelecommunicationserviceNOTE9:Thetermdoesnotincludelegalorregulatoryaspects,neitherdoesitindicateifthenetworkisapublicoraprivatenetwork.incomingcall:callreceivedataPPinter-operability:capabilityofFPsandPPs,thatenableaPPtoobtainaccesstoteleservicesinmorethanonelocationareaand/orfrommorethanoneoperator(morethanoneserviceprovider)InterworkingUnit(IWU):unitthatisusedtointerconnectsub-networksNOTE10:TheIWUcontainstheinterworkingfunctionsnecessarytosupporttherequiredsub-networkinterworking.ISDNAccessProfile(IAP):definedpartoftheDECT/ISDNinterworkingstandardthatensuresinter-operabilitybetweenFPsandPPsfortheaccessofISDNservicesLocalNetwork(LNW):telecommunicationnetworkcapableofofferinglocaltelecommunicationservicesNOTE11:Thetermdoesnotincludelegalorregulatoryaspects,nordoesitindicateifthenetworkisapublicnetworkoraprivatenetwork.SIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)9MACConnection(CONNECTION):associationbetweenonesourceMACMulti-BearerControl(MBC)entityandonedestinationMACMBCentity.ThisprovidesasetofrelatedMACservices(asetoflogicalchannels),anditcaninvolveoneormoreunderlyingMACbearersoutgoingcall:calloriginatingfromaPPpaging:processofbroadcastingamessagefromaDECTFPtooneormoreDECTPPsNOTE12:Differenttypesofpagingmessagearepossible.Forexample,the{LCE_REQUEST-PAGE}messageorderstherecipienttorespondwithacallset-upattempt.PortableApplication(PA):logicalgroupingthatcontainsalltheelementsthatliebeyondtheDECTnetworkboundaryontheportablesideNOTE13:Thefunctionscontainedintheportableapplicationmaybephysicallydistributed,butanysuchdistributionisinvisibletotheDECTnetwork.PortablePart(DECTPortablePart)(PP):physicalgroupingthatcontainsallelementsbetweentheuserandtheDECTairinterface.PPisagenerictermthatmaydescribeoneorseveralphysicalpiecesNOTE14:ADECTPPislogicallydividedintoonePTplusoneormorePAs.PortableradioTermination(PT):logicalgroupoffunctionsthatcontainsalloftheDECTprocessesandproceduresontheportablesideoftheDECTairinterfaceNOTE15:APTonlyincludeselementsthataredefinedintheDECTCIstandard.Thisincludesradiotransmissionelements(layer1)togetherwithaselectionoflayer2andlayer3elements.PublicAccessProfile(PAP):definedpartoftheDECTCommonInterface(DECTCI)standardthatensuresinter-operabilitybetweenFPsandPPsforpublicaccessservicesRadioFixedPart(RFP):onephysicalsub-groupofaFPthatcontainsalltheradioendpoints(oneormore)thatareconnectedtoasinglesystemofantennassegment:oneofthepiecesofdatathatisproducedbytheprocessofsegmentationNOTE16:Ingeneral,onesegmentonlyrepresentsaportionofacompletemessage.segmentation:processofpartitioningoneServiceDataUnit(SDU)fromahigherlayerintomorethanoneProtocolDataUnit(PDU).Thereverseprocessisassemblysupplementaryservice:servicethatmodifiesorsupplementsabasictelecommunicationserviceteleservice:typeoftelecommunicationservicethatprovidesthecompletecapability,includingterminalequipmentfunctions,forcommunicationbetweenusers,accordingtoprotocolsthatareestablishedbyagreementU-plane:userplaneoftheDECTprotocolstacks.Thisplanecontainsmostoftheend-to-end(external)userinformationandusercontrolNOTE17:TheU-planeprotocolsdonotincludeanyinternalDECTprotocolcontrol,anditmaybenullattheNWKlayerandattheDLClayersforsomeservices.3.2DECTabbreviationsandacronymsForthepurposesofthepresentdocumentthefollowingDECTabbreviationsandacronymsapply:3PTYThreepartyAOCAdviceOfChargeCCBSCompletionofCallstoBusySubscriberCCCallControlCCITT(The)InternationalTelegraphandTelephoneConsultativeCommitteeCDCallDeflectionSIST EN 300 434-2 V1.2.1:2003

ETSIETSIEN300434-2V1.2.1(2001-08)10CFCallForwarding(supplementaryservice)HOLDCallHOLDCICommonInterfaceCLIPCallingLineIdentificationPresentationCLIRCallingLineIdentificationRestrictionCOLPCOnnectedLineidentificationPresentationCOLRCOnnectedLineidentificationRestrictionCONFConferencecall,add-onCRSSCallRelatedSupplementaryServicesCUGClosedUserGroupCWCallWaitingDDECTreferencepointforendsystemDDIDirectDiallingInDECTDigitalEnhancedCordlessTelecommunicationDFSDECTFixedSystemDLCDataLinkControlDPSDECTPortableSystemFPFixedPartFPHFreePhoneFTFixedradioTerminationIAPISDNAccessProfileIWUInterWorkingUnitLCELinkControlEntityMACMediumAccessControlMCIDMaliciousCallIDentificationMMCMeet-MeConferenceMSNMultipleSubscriberNumberNWKNetworkPAPPublicAccessProfilePDUProtocolDataUnitPPPortablePartPTPortableradioTerminationRFPRadioFixedPartSUBSUBaddressingSDUServiceDataUnitUUSUser-to-UserSignallingUUS1UUSservice1UUS2UUSservice2UUS3UUSservice33.3ISDNabbreviationsandacronymsForthepurposeofthepresentdocument,thefollowin
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