ETSI EN 301 479 V1.1.2 (2000-08)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digitalno omrežje z integriranimi storitvami (ISDN) – Dopolnilna storitev: iskanje voda v skupini (LH) – Opis storitveIntegrated Services Digital Network (ISDN); Line Hunting (LH) supplementary service; Service description33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 479 Version 1.1.2SIST EN 301 479 V1.1.2:2005en01-januar-2005SIST EN 301 479 V1.1.2:2005SLOVENSKI
STANDARD



SIST EN 301 479 V1.1.2:2005



ETSIEN301479V1.1.2(2000-08)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);LineHunting(LH)supplementaryservice;ServicedescriptionSIST EN 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)2ReferenceDEN/SPAN-020003KeywordsISDN,LH,stage1,supplementaryserviceETSI650RoutedesLuciolesF-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 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)3ContentsIntellectualPropertyRights.5Foreword.51Scope.62References.63Definitions.74Abbreviations.85Description.86Procedures.96.1Provisionandwithdrawal.96.2Normalprocedures.106.2.1Activation,deactivationandregistration.106.2.2Erasure.106.2.3Invocationandoperation.106.2.4Interrogation.106.3Exceptionalprocedures.106.3.1Activation,deactivationandregistration.106.3.2Erasure.116.3.3Invocationandoperation.116.3.4Interrogation.117Intercommunicationconsiderations.117.1Interworkingwithnon-lSDNs.117.2InterworkingwithprivateISDNs.118Interactionwithothersupplementaryservices.118.1Adviceofchargeservices.128.1.1Adviceofchargeatcallset-uptime.128.1.2Adviceofchargeduringthecall.128.1.3Adviceofchargeattheendofacall.128.2Callwaiting.128.3Callhold.128.4Explicitcalltransfer.128.5Numberidentificationservices.138.5.1Callinglineidentificationpresentation.138.5.2Callinglineidentificationrestriction.138.5.3Connectedlineidentificationpresentation.138.5.4Connectedlineidentificationrestriction.138.6Closedusergroup.138.7Callcompletionservices.138.7.1Completionofcallstobusysubscriber.138.7.2Completionofcallsonnoreply.138.8Conferenceservices.148.8.1Conferencecall,add-on.148.8.2Conferencecall,meet-me.148.9Directdiallingin.148.10Diversionservices.148.10.1Callforwardingunconditional.148.10.2Callforwardingbusy.148.10.3Callforwardingnoreply.148.10.4Calldeflection.148.10.5Selectivecallforwarding.148.11Freephone.158.12Maliciouscallidentification.15SIST EN 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)48.13Multiplesubscribernumber.158.14Subaddressing.158.15Terminalportability.158.16Threeparty.158.17User-to-usersignalling.158.18Huntingservices.158.18.1Linehunting.158.18.2Trunkhunting.168.19Callbarringservices.168.19.1Outgoingcallbarring-fixed.168.19.2Outgoingcallbarring-usercontrolled.169Interactionwithotherservices.169.1Universalaccessnumber.169.2Virtualcardcalling.169.3Premiumrate.169.4Universalpersonaltelecommunication.169.5Remotecontrol.16AnnexA(informative):ConsiderationofaMulti-NodalLineHuntingservice.17Bibliography.18History.19SIST EN 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)5IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).InaccordancewithCCITTRecommendationI.130[1],thefollowingthreelevelstructureisusedtodescribethesupplementarytelecommunicationsservicesasprovidedbyEuropeanpublictelecommunicationsoperatorsunderthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN):Stage1:isanoverallservicedescription,fromtheuser'sstandpoint;Stage2:identifiesthefunctionalcapabilitiesandinformationflowsneededtosupporttheservicedescribedinstage1;andStage3:definesthesignallingsystemprotocolsandswitchingfunctionsneededtoimplementtheservicedescribedinstage1.Thepresentdocumentdetailsthestage1aspects(overallservicedescription)fortheLineHunting(LH)supplementaryservice.Stage2willbespecifiedlaterintheETS300356[8]series.Stage3aspectsaredetailedinEN301484-1[7].NationaltranspositiondatesDateofadoptionofthisEN:25August2000DateoflatestannouncementofthisEN(doa):30November2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31May2001DateofwithdrawalofanyconflictingNationalStandard(dow):31May2001SIST EN 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)61ScopeThepresentdocumentdefinesthestageoneoftheLineHunting(LH)supplementaryserviceforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)asprovidedbyEuropeanpublictelecommunicationsoperators.Stageoneisanoverallservicedescriptionfromtheuser'spointofview(seeCCITTRecommendationI.130[1]),butdoesnotdealwiththedetailsofthehumaninterfaceitself.ThepresentdocumentdefinestheinterworkingrequirementsofprivateISDNswiththepublicISDN.InadditionthepresentdocumentspecifiesthebasefunctionalitywheretheserviceisprovidedtotheuserbyaprivateISDN.ThepresentdocumentdoesnotspecifytheadditionalrequirementswheretheserviceisprovidedtotheuserviaatelecommunicationsnetworkthatisnotanISDNbutdoesincludeinterworkingrequirementsofothernetworkswiththepublicISDN.Interactionswith(supplementary)servicesnotlistedinclauses8and9areoutsidethescopeofthepresentdocument.Chargingprinciplesareoutsidethescopeofthepresentdocument.TheLHsupplementaryserviceenablescallstoasingleISDNnumbertobeofferedtoafreeaccessinagroupofaccessestowhichterminalsareconnectedtoanend-user'smultipleaccessgroup(S/Treferencepoint).Theprinciplesfortheselectionofafreechannelwithinanaccessareanetworkprovidermatteraspartofthebasiccallproceduresandsoareoutsidethescopeofthepresentdocument.TheLHsupplementaryserviceisapplicabletoallcircuit-switchedtelecommunicationsserviceswiththeexceptionofservicesrequiringtheuseofmorethanoneB-channel.ThepresentdocumentisapplicabletothestagetwoandstagethreestandardsfortheISDNLHsupplementaryservice.Theterms"stagetwo"and"stagethree"arealsodefinedinCCITTRecommendationI.130[1].Wherethetextindicatesthestatusofarequirement,(i.e.asstrictcommandorprohibition,asauthorizationleavingfreedom,asacapabilityorpossibility),thisshallbereflectedinthetextoftherelevantstagetwoandstagethreestandards.Furthermore,conformancetothepresentdocumentismetbyconformingtothestagethreestandardswiththefieldofapplicationappropriatetotheequipmentbeingimplemented.Thereforenomethodoftestingisprovidedforthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]CCITTRecommendationI.130(1988):"MethodforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[2]ITU-TRecommendationI.112(1993):"VocabularyoftermsforISDNs".[3]ITU-TRecommendationI.210(1993):"PrinciplesoftelecommunicationservicessupportedbyanISDNandthemeanstodescribethem".SIST EN 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)7[4]ITU-TRecommendationE.164(1997):"Theinternationalpublictelecommunicationnumberingplan".[5]ITU-TRecommendationI.221(1993):"Commonspecificcharacteristicsofservices".[6]ETSIEN300089:"IntegratedServicesDigitalNetwork(ISDN);CallingLineIdentificationPresentation(CLIP)supplementaryservice;Servicedescription".[7]ETSIEN301484-1:"IntegratedServicesDigitalNetwork(ISDN);LineHunting(LH)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1);Part1:Protocolspecification".[8]ETSIETS300356:"IntegratedServicesDigitalNetwork(ISDN);SignallingSystemNo.7;ISDNUserPart(ISUP)version2fortheinternationalinterface".3DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:access:generalterm,usedinthepresentdocument,denotingbasicaccessesandasanetworkprovideroption,primaryrateaccessesaccessidentity:meansofidentifyinganindividualaccessbelongingtoahuntgroup;theaccessidentityconsistsofthehuntgroupnumberplusasequencenumberidentifyingtheindividualaccesswithinthehuntgroupIntegratedServicesDigitalNetwork(ISDN):seeITU-TRecommendationI.112[2],subclause2.3,definition308service;telecommunicationsservice:seeITU-TRecommendationI.112[2],subclause2.2,definition201supplementaryservice:seeITU-TRecommendationI.210[3],subclause2.4ISDNnumber:numberconformingtothenumberingplanandstructurespecifiedinITU-TRecommendationE.164[4]basicaccess:seeITU-TRecommendationI.112[2],subclause2.4,definition425primaryrateaccess:seeITU-TRecommendationI.112[2],subclause2.4,definition426freeaccess:accesstowhichthecallcanbeofferedwithoutexceedingthenumberofusedB-channelsspecifiedforthisaccesshuntgroup:numberofaccessesoverwhichtheLHsupplementaryserviceappliesfortheassignedISDNnumber.Ahuntgroupmayconsistofasingleaccesshuntgroupnumber:ISDNnumber,towhichtheLHsupplementaryserviceisallocatedandtowhichISDNbasicservicesandsupplementaryservicesrelatingtothehuntgroupareallocated.huntgroupwithdrawal:requestbyanaccessofthehuntgroupinordertotemporarilypreventthisaccessfromreceivingcallstothehuntgroup(existingcallsarenotaffected)individualnumber:(inthecontextofthepresentdocument)ISDNnumberwhichisnotahuntgroupnumber,butwhichcanbeassociatedwithanaccessthatbelongstoahuntgroupinordertoidentifyoneormoreterminalsconnectedtotheaccessserveduser:usertowhomtheLHsupplementaryserviceisprovidedbasiccallprocedures:proceduresbywhichacall(asaninstanceofabasictelecommunicationsservice)isestablishedandterminatednetworkdetermineduserbusy:seeITU-TRecommendationI.221[5],subclause2.1.4userdetermineduserbusy:seeITU-TRecommendationI.221[5],subclause2.1.4sequentialhunting:selectionofafreeaccessalwaysstartswiththesameaccessandthenfollowsafixedorderuntilallaccessesinthehuntgrouphavebeensearchedorafreeaccessisfoundSIST EN 301 479 V1.1.2:2005



ETSIETSIEN301479V1.1.2(2000-08)8cyclichunting:selectionofafreeaccessalwaysstartsatthenextaccessaftertheoneusedlast,andfollowsafixedorder.Whenthelastaccessinthegroupisreached,thesearchcontinuesfromthebeginningofthegroupuntilallaccessesinthegrouphavebeensearcheddefaultnumber:definedfortheCLIPserviceinEN300089[6]Inordertoprovideconsistencyfromacustomerperspectivethesamedefaultnumbermaybeassociatedwithalltheaccessesthatgotoauserinstallation.InthissituationthedefaultnumberisaHuntGroupNumberandtheHuntGroupitrelatestocontainsalltheaccessesthatgotoauserinstallation.end-user:userwhoisconnec
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