General Information

Abstract

Addition to the existing DDI/forwarding supplementary services on a user network interface to incorporate the forwarding of a specific DDI range

Status
Published
Publication Date
30-Nov-2003
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 300 207-1 V2.0.1 (2000-04) - Integrated Services Digital Network (ISDN); Diversion supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification

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SIST EN 300 207-1 V2.0.1:2003

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Overview

SIST EN 300 207-1 V2.0.1:2003 defines the protocol specification for Diversion supplementary services within the Integrated Services Digital Network (ISDN), utilizing the Digital Subscriber Signalling System No. one (DSS1) protocol at the user-network interface. This standard enhances the capabilities of existing Direct Dialling In (DDI) and forwarding supplementary services, particularly by supporting the forwarding of specific DDI ranges across ISDN interfaces. It specifies the required signaling protocols and switching functions at the ISDN T reference point, ensuring harmonized telecommunication service behavior across networks.

Key Topics

  • ISDN Diversion Supplementary Services: The standard covers several core ISDN diversion services:
    • Call Forwarding Unconditional (CFU)
    • Call Forwarding Busy (CFB)
    • Call Forwarding No Reply (CFNR)
    • Selective Call Forwarding Unconditional (SCFU)
    • Selective Call Forwarding Busy (SCFB)
    • Selective Call Forwarding No Reply (SCFNR)
    • Call Deflection (CD)
  • Support for DDI Range Forwarding: Enables supplementary services to forward entire DDI ranges, improving call management flexibility for organizations using block allocations of ISDN numbers.
  • User-Network Interface Protocols: Specifies DSS1 signaling requirements and procedures at the ISDN T or coincident S and T reference points, following ITU-T recommendations.
  • Subscription and Operational Options:
    • Service provision on a per-ISDN number, per-DDI range, or per-access basis.
    • Customizable subscription and notification options for users and network providers.
    • Parameterization for network-specific options such as call timers, notification triggers, maximum numbers of diversions, and screening lists.
  • Interaction Scenarios:
    • Procedures for interworking between private and public ISDNs (e.g., when calls are diverted from public to private ISDN networks and vice versa).
    • Interaction with other supplementary services, ensuring compatibility and standardized service logic.

Applications

SIST EN 300 207-1 V2.0.1:2003 offers practical value in several scenarios:

  • Enterprise Telephony: Supports advanced call forwarding and diversion management across ISDN-connected PBXs (Private Branch Exchanges), including forwarding by DDI ranges for efficient number management.
  • Telecommunications Operators: Ensures uniform diversion service behavior and interoperability at ISDN network boundaries, facilitating reliable supplementary service operation across diverse equipment vendors.
  • ISDN Equipment Manufacturers: Provides a clear protocol foundation for implementing and testing compliant ISDN customer-premises equipment (CPE) and network infrastructure.
  • Public and Private Network Integration: Enables complex call routing scenarios, such as calls originating in a public ISDN and being diverted via private networks without loss of supplementary service capabilities.

Related Standards

For full conformance and broader ISDN supplementary service compatibility, consult the following standards:

  • EN 300 207-2: Protocol Implementation Conformance Statement (PICS) for DSS1 Diversion services.
  • EN 300 207-3/5: Test Suite Structures and Test Purposes (TSS&TP) for user and network sides.
  • EN 300 403-1: ISDN DSS1 Protocol for basic call control.
  • EN 300 195-1, EN 300 196-1: Protocols for supplementary service interactions and generic functional support.
  • ES 201 481: ISDN service enhancements based on DDI ranges.
  • ETSI ETS 300 062: Service Description for Direct Dialling In.
  • Relevant ITU-T Recommendations: Including I.411 (ISDN interfaces), E.164 (numbering), I.130, and I.210 for telecommunication service principles and definitions.

SIST EN 300 207-1 V2.0.1:2003 is vital for achieving consistent, reliable, and feature-rich ISDN supplementary service functionality in aligned European and international telecommunications environments.

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SIST EN 300 207-1 V2.0.1:2003

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Frequently Asked Questions

SIST EN 300 207-1 V2.0.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Integrated Services Digital Network (ISDN); Diversion supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification". This standard covers: Addition to the existing DDI/forwarding supplementary services on a user network interface to incorporate the forwarding of a specific DDI range

Addition to the existing DDI/forwarding supplementary services on a user network interface to incorporate the forwarding of a specific DDI range

SIST EN 300 207-1 V2.0.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.080 - Integrated Services Digital Network (ISDN). The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 300 207-1 V2.0.1:2003 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.VWRULWYHIntegrated Services Digital Network (ISDN); Diversion supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 207-1 Version 2.0.1SIST EN 300 207-1 V2.0.1:2003en01-december-2003SIST EN 300 207-1 V2.0.1:2003SLOVENSKI
STANDARD
ETSIEN300207-1V2.0.1(2000-04)EuropeanStandard(Telecommunicationsseries)IntegratedServicesDigitalNetwork(ISDN);Diversionsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:ProtocolspecificationSIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)2ReferenceREN/SPAN-05170-1KeywordsISDN,DSS1,supplementaryservice,CF,SCF,SCFB,SCFNR,SCFU,DDI,protocolImportantnoticeThisETSIdeliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthisdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.ETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88Internetsecretariat@etsi.frIndividualcopiesofthisETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frSIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)3ContentsIntellectualPropertyRights.5Foreword.51Scope.72References.83Definitions.94Abbreviations.115Description.126Operationalrequirements.136.1Provisionandwithdrawal.136.2Requirementsonthecallinguser'snetworkside.156.3Requirementsontheserveduser'snetworkside.156.4Requirementsonthediverted-touser'snetworkside.157Codingrequirements.167.1CodingoftheFacilityinformationelementcomponents.167.2Codingoftheinformationelements.227.2.1CodingoftheNotificationindicatorinformationelement.227.2.2CodingoftheRedirectingnumberinformationelement.237.2.3CodingoftheRedirectionnumberinformationelement.238Statedefinitions.249SignallingproceduresatthecoincidentSandTreferencepoint.259.1Activation,deactivationandinterrogation.259.1.1Activation.259.1.1.1Normaloperationfordiversionservicesotherthanselectivecallforwardingservice.259.1.1.2Exceptionalproceduresfordiversionservicesotherthanselectivecallforwardingservices.279.1.1.3Normaloperationfortheselectivecallforwardingservices.289.1.1.4Exceptionalproceduresfortheselectivecallforwardingservices.309.1.2Deactivation.319.1.2.1Normaloperationfordiversionservicesotherthanselectivecallforwardingservices.319.1.2.2Exceptionalproceduresfordiversionservicesotherthanselectivecallforwardingservices.329.1.2.3Normaloperationfortheselectivecallforwardingservices.339.1.2.4Exceptionalproceduresfortheselectivecallforwardingservices.349.1.3Interrogationoftheservedusernumbers.359.1.3.1Normalprocedures.359.1.3.2Exceptionalprocedures.359.1.4Interrogationofasingleormultipleinstancesofthesupplementaryservice.369.1.4.1Normaloperationfordiversionservicesotherthantheselectivecallforwardingservices.369.1.4.2Exceptionalproceduresfordiversionservicesotherthantheselectivecallforwardingservices.379.1.4.3Normaloperationsforselectivecallforwardingservices.389.1.4.4Exceptionalproceduresfortheselectivecallforwardingservices.389.1.5Proceduresforinterrogationofaspecificscreeninglist.399.1.5.1Normalprocedures.399.1.5.2Exceptionalprocedures.409.2Invocationandoperation.409.2.1Collectionandanalysisofdiversioninformationatthecallingnetwork.409.2.1.1Normaloperation.409.2.1.2Exceptionalprocedures.419.2.2Notificationofdiversiontothecallinguser.419.2.2.1Normaloperation.419.2.2.2Exceptionalprocedures.419.2.3Identificationofthediverted-tousertothecallinguser.42SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)49.2.3.1Normaloperation.429.2.3.2Exceptionalprocedures.429.2.4Operationattheserveduser.439.2.4.1ProceduresfortheCFUsupplementaryservice.439.2.4.1.1Normaloperation.439.2.4.1.2Exceptionalprocedures.449.2.4.2NetworkDeterminedUserBusy(NDUB)proceduresfortheCFBsupplementaryservice.449.2.4.2.1Normaloperation.449.2.4.2.2Exceptionalprocedures.459.2.4.3UserDeterminedUserBusy(UDUB)proceduresfortheCFBsupplementaryservice.459.2.4.3.1Normaloperation.459.2.4.3.2Exceptionalprocedures.469.2.4.4ProceduresfortheCFNRsupplementaryservice.469.2.4.4.1Normaloperation.469.2.4.4.2Exceptionalprocedures.479.2.4.5ProceduresfortheCDsupplementaryservice.479.2.4.5.1Normaloperation.479.2.4.5.2Exceptionalprocedures.499.2.4.6ProceduresfortheSCFsupplementaryservice.499.2.5Operationatthediverted-touser.509.2.5.1Normaloperation.509.2.5.2Exceptionalprocedures.519.3Remindernotificationtotheserveduser.519.3.1Normaloperation.519.3.2Exceptionalprocedures.5110ProceduresforinterworkingwithprivateISDNs.5210.1ProcedureswhereacallfromthepublicISDNisdivertedwithinorbeyondtheprivateISDN.5210.1.1Normaloperation.5210.1.2Exceptionalprocedures.5210.2PresentationofadivertedcallfromapublicISDNtotheprivateISDN.5310.2.1Normaloperation.5310.2.2Exceptionalprocedures.5310.3ProcedureswhereacallfromtheprivateISDNisdivertedwithinorbeyondthepublicISDN.5310.4PresentationofadivertedcallfromaprivateISDNtothepublicISDN.5410.4.1Normaloperation.5410.4.2Exceptionalprocedures.5410.5ProcedureswhereacallfromthepublicISDNisdivertedwithinorbeyondtheprivateISDNandpartialrerouteingtakesplaceinthepublicISDN.5510.5.1Normaloperation.5510.5.2Exceptionalprocedures.5710.6ProcedureswhereacallfromthepublicISDNtotheprivateISDNisdivertedbythepublicISDNwhenDiversionserviceenhancementsbasedonDDIrangesdonotapply.5810.7ProcedureswhereacallfromthepublicISDNtotheprivateISDNisdivertedbythepublicISDNwhenDiversionserviceenhancementsbasedonDDIrangesapply.5811Interactionswithothernetworks.5912Interactionwithothersupplementaryservices.5913Parametervalues(timers).5914Dynamicdescription(SDLdiagrams).60AnnexA(informative):Changehistory.61A.1ChangesfromETS300207-1(1994)toEN300207-1(1998).61A.2ChangesfromEN300207-1(1998).61History.62SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)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)hasbeenproducedbyETSITechnicalCommitteeServicesandProtocolsforAdvancedNetworks(SPAN).Thepresentdocumentispart1ofamulti-partENcoveringtheDigitalSubscriberSignallingSystemNo.one(DSS1)protocolspecificationfortheIntegratedServicesDigitalNetwork(ISDN)diversionsupplementaryservices,asdescribedbelow:Part1:"Protocolspecification";Part2:"ProtocolImplementationConformanceStatement(PICS)proformaspecification";Part3:"TestSuiteStructureandTestPurposes(TSS&TP)specificationfortheuser";Part4:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationfortheuser";Part5:"TestSuiteStructureandTestPurposes(TSS&TP)specificationforthenetwork";Part6:"AbstractTestSuite(ATS)andpartialProtocolImplementationeXtraInformationforTesting(PIXIT)proformaspecificationforthenetwork".InaccordancewithCCITTRecommendationI.130[4],thefollowingthreelevelstructureisusedtodescribethesupplementarytelecommunicationservicesasprovidedbyEuropeanpublictelecommunicationsoperatorsunderthepan-EuropeanISDN:-stageone:isanoverallservicedescription,fromtheuser'sstandpoint;-stagetwo:identifiesthefunctionalcapabilitiesandinformationflowsneededtosupporttheservicedescribedinstageone;and-stagethree:definesthesignallingsystemprotocolsandswitchingfunctionsneededtoimplementtheservicedescribedinstageone.Thepresentdocumentdetailsthestagethreeaspects(signallingsystemprotocolsandswitchingfunctions)neededtosupportthediversionsupplementaryservices.ThestageoneaspectsaredetailedinETS300199[14](1994)[14]ETS300200[15](1994)[15],ETS300201[16](1994)[16],ETS300202[17](1994)[17]andEN301133[18].ThestagetwoaspectsaredetailedinETS300203[22](1994)[22],ETS300204[23](1994)[23],ETS300205[24](1994)[24]andETS300206[25](1994)[25].ChangesfromthepreviousversionofthepresentdocumentareshowninannexA.SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)6NationaltranspositiondatesDateofadoptionofthisEN:21April2000DateoflatestannouncementofthisEN(doa):31July2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31January2001DateofwithdrawalofanyconflictingNationalStandard(dow):31January2001SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)71ScopeThisfirstpartofEN300207specifiesthestagethreeofthediversionsupplementaryservicesforthepan-EuropeanIntegratedServicesDigitalNetwork(ISDN)asprovidedbyEuropeanpublictelecommunicationsoperatorsattheTreferencepointorcoincidentSandTreferencepoint(asdefinedinITU-TRecommendationI.411[9])bymeansoftheDigitalSubscriberSignallingSystemNo.one(DSS1).Stagethreeidentifiestheprotocolproceduresandswitchingfunctionsneededtosupportatelecommunicationservice(seeCCITTRecommendationI.130[4]).Inaddition,thepresentdocumentspecifiestheprotocolrequirementsattheTreferencepointwheretheserviceisprovidedtotheuserviaanintermediateprivateISDN.ThepresentdocumentdoesnotspecifytheadditionalprotocolrequirementswheretheserviceisprovidedtotheuserviaatelecommunicationsnetworkthatisnotanISDN.Thediversionsupplementaryservicescomprisethefollowingservices:-CallForwardingUnconditional(CFU)supplementaryservice;-CallForwardingBusy(CFB)supplementaryservice;-CallForwardingNoReply(CFNR)supplementaryservice;-SelectiveCallForwardingUnconditional(SCFU)supplementaryservice;-SelectiveCallForwardingBusy(SCFB)supplementaryservice;-SelectiveCallForwardingNoReply(SCFNR)supplementaryservice;-CallDeflection(CD)supplementaryservice.TheCFUsupplementaryserviceenablesaservedusertohavethenetworkredirecttoanotherusercallswhichareaddressedtotheserveduser'sISDNnumber.TheCFUsupplementaryservicemayoperateonallcalls,orjustthoseassociatedwithspecifiedbasicservices.Theserveduser'sabilitytooriginatecallsisunaffectedbytheCFUsupplementaryservice.AftertheCFUsupplementaryservicehasbeenactivated,callsareforwardedindependentofthestatusoftheserveduser.TheCFBsupplementaryserviceenablesaservedusertohavethenetworkredirecttoanotherusercallswhichareaddressedtotheserveduser'sISDNnumberandmeetbusy.TheCFBsupplementaryservicemayoperateonallcalls,orjustthoseassociatedwithspecifiedbasicservices.Theserveduser'sabilitytooriginatecallsisunaffectedbytheCFBsupplementaryservice.TheCFNRsupplementaryserviceenablesaservedusertohavethenetworkredirecttoanotherusercallswhichareaddressedtotheserveduser'sISDNnumber,andforwhichtheconnectionisnotestablishedwithinadefinedperiodoftime.TheCFNRsupplementaryservicemayoperateonallcalls,orjustthoseassociatedwithspecifiedbasicservices.Theserveduser'sabilitytooriginatecallsisunaffectedbytheCFNRsupplementaryservice.TheSCFsupplementaryserviceenablesaservedusertospecifytheforwardingoftheirincomingcallstoaselecteddestinationsubjecttocertainconditionsorcircumstancese.g.thecallinglineidentityofthecallinguser.Theuserisalsoallowedtointerrogatethescreeninglist.TheCDsupplementaryserviceenablestheservedusertorespondtoanincomingcallbyrequestingredirectionofthatcalltoanotheruser.TheCDsupplementaryservicecanonlybeinvokedbeforetheconnectionisestablishedbytheserveduser,i.e.inresponsetotheofferedcall,orduringtheperiodthattheserveduserisbeinginformedofthecall.Theserveduser'sabilitytooriginatecallsisunaffectedbytheCDsupplementaryservice.ThepresentdocumentalsodescribesinteractionsforServiceenhancementsbasedonDDIrangesforDiversionservicesdetailedinES201481[20].Thediversionsupplementaryservicesareapplicabletoallcircuit-switchedtelecommunicationservices.FurtherpartsofEN300207specifythemethodoftestingrequiredtoidentifyconformancetothepresentdocument.SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)8Thepresentdocumentisapplicabletoequipmentsupportingatleastoneofthediversionsupplementaryservices,tobeattachedateithersideofaTreferencepointorcoincidentSandTreferencepointwhenusedasanaccesstothepublicISDN.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]CCITTRecommendationX.208(1988):"SpecificationofAbstractSyntaxNotationOne(ASN.1)".[2]CCITTRecommendationX.219(1988):"Remoteoperations:Model,notationandservicedefinitions".[3]CCITTRecommendationZ.100(1988):"SpecificationandDescriptionLanguage(SDL)".[4]CCITTRecommendationI.130(1988):"MethodforthecharacterizationoftelecommunicationservicessupportedbyanISDNandnetworkcapabilitiesofanISDN".[5]ITU-TRecommendationE.164(1997):"Theinternationalpublictelecommunicationnumberingplan".[6]ITU-TRecommendationI.112(1993):"VocabularyoftermsforISDNs".[7]ITU-TRecommendationI.210(1993):"PrinciplesoftelecommunicationservicessupportedbyanISDNandthemeanstodescribethem".[8]ITU-TRecommendationI.221(1993):"Commonspecificcharacteristicsofservices".[9]ITU-TRecommendationI.411(1993):"ISDNuser-networkinterfaces;Referenceconfigurations".[10]ENV41007-1(1991):"Definitionoftermsinprivatetelecommunicationnetworks;Part1:Definitionofgeneralterms".[11]ETSIEN300403-1:"IntegratedServicesDigitalNetwork(ISDN);DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Signallingnetworklayerforcircuit-modebasiccallcontrol;Part1:Protocolspecification[ITU-TRecommendationQ.931(1993),modified]".[12]ETSIEN300195-1:"IntegratedServicesDigitalNetwork(ISDN);Supplementaryserviceinteractions;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[13]ETSIEN300196-1:"IntegratedServicesDigitalNetwork(ISDN);Genericfunctionalprotocolforthesupportofsupplementaryservices;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[14]ETSIETS300199(1994):"IntegratedServicesDigitalNetwork(ISDN);CallForwardingBusy(CFB)supplementaryservice;Servicedescription".[15]ETSIETS300200(1994):"IntegratedServicesDigitalNetwork(ISDN);CallForwardingUnconditional(CFU)supplementaryservice;Servicedescription".SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)9[16]ETSIETS300201(1994):"IntegratedServicesDigitalNetwork(ISDN);CallForwardingNoReply(CFNR)supplementaryservice;Servicedescription".[17]ETSIETS300202(1994):"IntegratedServicesDigitalNetwork(ISDN);CallDeflection(CD)supplementaryservice;Servicedescription".[18]ETSIEN301133(V1.1):"IntegratedServicesDigitalNetwork(ISDN);SelectiveCallForwarding(SCF)supplementaryservices(unconditional,busyandnoreply);Servicedescription".[19]ETSIEN300286-1:"IntegratedServicesDigitalNetwork(ISDN);User-to-UserSignalling(UUS)supplementaryservice;DigitalSubscriberSignallingSystemNo.one(DSS1)protocol;Part1:Protocolspecification".[20]ETSIES201481:"IntegratedServicesDigitalNetwork(ISDN);ISDNserviceenhancementsbasedonDDIrangesforcalldiversionsupplementaryservices".[21]Void.[22]ETSIETS300203:"IntegratedServicesDigitalNetwork(ISDN);CallForwardingBusy(CFB)supplementaryservice;Functionalcapabilitiesandinformationflows".[23]ETSIETS300204:"IntegratedServicesDigitalNetwork(ISDN);CallForwardingUnconditional(CFU)supplementaryservice;Functionalcapabilitiesandinformationflows".[24]ETSIETS300205:"IntegratedServicesDigitalNetwork(ISDN);CallForwardingNoReply(CFNR)supplementaryservice;Functionalcapabilitiesandinformationflows".[25]ETSIETS300206:"IntegratedServicesDigitalNetwork(ISDN);CallDeflection(CD)supplementaryservice;Functionalcapabilitiesandinformationflows".[26]ETSIETS300062:"IntegratedServicesDigitalNetwork(ISDN);DirectDiallingIn(DDI)supplementaryservice;ServiceDescription".3DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:address:addressisanISDNnumber,withoptionallyanassociatedsubaddressalertingphase:periodwheretheconnectionattheremoteaccessissuchthatifitisanISDNinterface,itisincallstateN7,CallReceived,andifitisananalogueinterface,analertingindicationisbeingprovidedallnumbers:ifforthecontrolofthecallforwardingsupplementaryservicestheparameterservedUserNrissetto"allNumbers",thenalltheISDNnumbersareaffectedthattheuserissubscribedtoandforwhichthecallforwardingsupplementaryserviceissubscribedto,atthepointintimethattherequestisreceivedinthenetworkallservices:ifforthecontrolofthecallforwardingsupplementaryservicestheparameterbasicServiceissetto"allServices"thenallbasicservicesareaffectedthattheuserissubscribedto,andforwhichthecallforwardingsupplementaryserviceappliesandissubscribedto,atthepointintimethattherequestisreceivedinthenetworkbasicservice:bearerserviceorteleservice.Whenusedinthepresentdocumentitrefersonlytocircuit-switchedbasicservicesbearerservice:seeITU-TRecommendationI.112[6],definition202callcontrolmessage:messageasdefinedinEN300403-1[11],subclause3.1,whichonsendingorreceiptcausesachangeofthecallstateateitherthenetworkortheuser.CallcontrolmessagesalsoincludetheINFORMATIONmessageandthePROGRESSmessagecallreference:seeEN300196-1[13],subclause3.1SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)10callstate:stateasdefinedinEN300403-1[11],foreithertheuserorthenetworkasappropriate.Acallstatemayexistforeachcallreferencevalue(andforeachadditionalrespondingConnectionEndpointIdentifier(CEI)intheincomingcallstates)callingnetwork:networktowhichthecallinguserisattachedcallinguser:userwhoinitiatedacallthathasbeendiverteddatalinkconnectionendpointidentifier;ConnectionEndpointIdentifier(CEI):seeEN300196-1[13],subclause3.1DDInumber:seeETS300062[26],definitionsDDIrange:seeES201481[20],definitionsDDIrangeidentifier:seeES201481[20],definitionsdeflected-tonumber:ISDNnumberofthedeflected-touserdeflected-touser:usertowhichthecallisredirectedasaresultofdeflectiondeflectingnumber:ISDNnumberofthedeflectinguserdiverted-touser:referseithertotheforwarded-touserortothedeflected-touserdiverted-tonetwork:networktowhichthediverted-touserisattacheddiverted-tonumber:ISDNnumberoftheforwarded-toorthedeflected-touserdivertingnetwork:networktowhichtheserveduser(divertinguser)isattacheddivertingnumber:ISDNnumberoftheforwarding/deflectinguserdiversionprofile:setofdatacontainingalltheparameterspertainingtosubscriptionandactivation,involvedinthedecisionprocesswhichleadstothediversionofanincomingcalldummycallreference:seeEN300196-1[13],subclause3.1explicitforwarding:forwardallcallsfromspecifiedcallingnumber(s)forwarded-toaddress:addressoftheforwarded-touserforwarded-tonetwork:networktowhichtheforwarded-touserisattachedforwarded-tonumber:ISDNnumberoftheforwarded-touserforwarded-touser:usertowhichthecallisredirectedasaresultofforwardingforwardingnetwork:networktowhichtheserveduser(forwardinguser)isattachedforwardingnumber:ISDNnumberoftheforwardinguserimplicitforwarding:forwardallcallsexceptfromthespecifiedcallingnumber(s)IntegratedServicesDigitalNetwork(ISDN):seeITU-TRecommendationI.112[6],definition308invokecomponent:seeEN300196-1[13],subclause8.2.2.1.Wherereferenceismadetoan"xxxx"invokecomponent,aninvokecomponentismeantwithitsoperationvaluesettothevalueoftheoperation"xxxx"ISDNnumber:numberconformingtothenumberingplanandstructurespecifiedinITU-TRecommendationE.164[5]network:DSS1protocolentityatthenetworksideoftheuser-networkinterfaceNetworkDeterminedUserBusy(NDUB):seeITU-TRecommendationI.221[8]privatenetwork:DSS1protocolentityattheuser-sideoftheuser-networkinterfacewhenaTreferencepointappliesSIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)11PrivateTelecommunicationNetworkeXchange(PTNX):seeENV41007-1[10],subclause4.4point-to-pointterminalconfiguration:terminalconfigurationinwhichthereisoneusersignallingentityrejectcomponent:seeEN300196-1[13],subclause8.2.2.4returnerrorcomponent:seeEN300196-1[13],subclause8.2.2.3.Wherereferenceismadetoan"xxxx"returnerrorcomponent,areturnerrorcomponentismeantwhichisrelatedtoan"xxxx"invokecomponentreturnresultcomponent:seeEN300196-1[13],subclause8.2.2.2.Wherereferenceismadetoan"xxxx"returnresultcomponent,areturnresultcomponentismeantwhichisrelatedtoan"xxxx"invokecomponentscreeninglist:listcontainingconditionsforforwardingornotforwardingacallserveduser:userwhichactivates,deactivatesorinterrogatestheCFB,CFNR,CFU,SCF,SCFB,SCFNRorSCFUsupplementaryservicesorinvokestheCDsupplementaryserviceservice;telecommunicationservice:seeITU-TRecommendationI.112[6],definition201subaddress:seeITU-TRecommendationE.164[5],subclause12.2supplementaryservice:seeITU-TRecommendationI.210[7],subclause2.4teleservice:seeITU-TRecommendationI.112[6],definition203user:DSS1protocolentityattheusersideoftheuser-networkinterfacewhenacoincidentSandTreferencepointappliesUserDeterminedUserBusy(UDUB):isspecifiedforthecasethatthenetworkoffersthecalltotheuserandifnocompatibleterminalresponds"positively"butoneormorecompatibleterminalrespond"userbusy"4AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ASN.1AbstractSyntaxNotationoneCDCallDeflectionCEIConnectionEndpointIdentifierCFBCallForwardingBusyCFNRCallForwardingNoReplyCFUCallForwardingUnconditionalCLICallingLineIdentityCLIPCallingLineIdentificationPresentationCLIRCallingLineIdentificationRestrictionCOLRConnectedLineIdentificationRestrictionDDIDirectDiallingInDSS1DigitalSubscriberSignallingSystemNo.oneDTNDiverted-ToNumberISDNIntegratedServicesDigitalNetworkLELocalExchangeMSNMultipleSubscriberNumberNDUBNetworkDeterminedUserBusyPTNXPrivateTelecommunicationNetworkeXchangeSCFSelectiveCallForwardingSCFBSelectiveCallForwardingBusySCFNRSelectiveCallForwardingNoReplySCFUSelectiveCallForwardingUnconditionalSDLSpecificationandDescriptionLanguageUDUBUserDeterminedUserBusySIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)125DescriptionAsanetworkprovideroptionthediversionsupplementaryservicescanbeprovidedonaperISDNnumberbasis,onaDDIRangeortothewholeaccess.Inaddition,andasanetworkprovideroption,thecallforwardingsupplementaryservices(includingoptions)maybesubscribedtoforeachbasicservicetowhichtheuser(s)ofthenumbersubscribes,orcollectivelyforallthebasicservicestowhichtheuser(s)subscribes.TheCDsupplementaryserviceappliestoallofthebasicservicessubscribedtobytheuser.Theservedusermayregisteradifferentforwarded-toaddressforeachbasicservicesubscriptionparametervalueandcallforwardingsupplementaryservicetowhichhehassubscribed.Anindicationthatacallforwardingsupplementaryserviceisactivatedmay,asasubscriptionoption,begiventotheforwardinguserwhohasforwardingactivated,eachtimeanoutgoingcallismade.TheCFNRsupplementaryserviceonlyapplieswhenaSETUPmessageissentbythenetworkandatleastoneuserrespondswithanALERTINGmessage,possiblysubsequenttoothervalidcallcontrolmessages.ThefunctionsoftheCDsupplementaryserviceareimplementedinthenetworkandtheyareinvokedbytheterminalonacallbycallbasis.TheSCFsupplementaryserviceisanincomingcallmanagementfeaturetothedefinedCallForwardingsupplementaryservicesthatallowstheservedusertodefineoneormorescreeninglists.Incomingcallsthatsatisfytheconditionsidentifiedbythescreeninglistareforwardedtotheforward-toISDNaddress,whichisregisteredonactivationoftheSCFsupplementaryservice.Theserveduser'sabilitytooriginatecallsisunaffectedbytheSCFsupplementaryservice.TheCallingLineIdentity(CLI)istheonlyforwardingconditiondefinedinthepresentdocumentforuseinthescreeninglists.Asaserviceprovideroption,theservedusermayspecifytheforwardingoftheirincomingcallstodestinationsaccordingtoadditionalforwardingconditionse.g.:-timeofday,dayofweeketc.;-areaofcallorigination.NOTE1:Thespecificationoftheseconditionsisoutsidethescopeofthepresentdocument.TheservedusercanhavemultipleinstancesoftheactivationoftheSCFsupplementaryservicei.e.morethanonescreeninglistmaybeinuse.Thisenablescallstobeforwardedtodifferentdestinations,accordingtodifferentcriteriainthescreeninglists.Atactivationtime,foreachscreeninglist,theserveduserspecifieswhetherforwardingistobedoneunconditionallyoronbusyand/oronnoreply.Atregistration,thestatusofeachscreeninglist,i.e.explicitorimplicitisstated.NOTE2:Ifapplicable,thepriorityofthescreeninglistsmaybeindicatedatregistration.TheformatoftheCLIsinthescreeninglists(e.g.completeE.164[5]numbersorpartE.164[5]numbers)willbeasspecifiedinstageone.Allparametersspecifiedbytheserveduserinascreeninglistareindependentfromthosespecifiedintheotherscreeninglistsbelongingtotheserveduser.TheSCFservicedoesnotapplytotheCallDeflection(CD)supplementaryservice.SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)136Operationalrequirements6.1ProvisionandwithdrawalTheCFU,CFB,CFNR,SCFU,SCFB,SCFNRand/orCDsupplementaryservicesshallbeprovidedafterpriorarrangementwiththenetworkprovider.Eachdiversionsupplementaryservicemaybewithdrawnseparatelybythenetworkprovideratthesubscriber'srequestorforadministrativereasons.Thediversionsupplementaryservicesmaybeofferedseparatelywithsubscriptionoptions.ThesubscriptionoptionsfortheCFUsupplementaryservicearegiveninETS300200[15],subclause6.1.ThesubscriptionoptionsfortheCFBsupplementaryservicearegiveninETS300199[14],subclause6.1.ThesubscriptionoptionsfortheCFNRsupplementaryservicearegiveninETS300201[16],subclause6.1.ThesubscriptionoptionsfortheSCFsupplementaryservicearegiveninEN301133[18],subclause6.1.ThesubscriptionoptionsfortheCDsupplementaryservicearegiveninETS300202[17],subclause6.1.ThesubscriptionoptionsforDiversionserviceenhancementsbasedonDDIrangesaregiveninES201481[20],subclause6.1.TheactualitemsintheSCFserveduser'sscreeninglistshallbeagreedbetweentheserveduserandatthediscretionofthenetworkprovideratsubscriptiontime.Eachsubscriptionoptionmaybeprovidedasanetworkprovideroption.Foreachsubscriptionoption,onlyonevalueshallbeselected.Subscriptionoptionshavingimpactontheprotocolaresummarizedintable1.SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)14Table1:SubscriptionoptionsforthediversionsupplementaryservicesSubscriptionoptionValueApplicabilityServeduserreceivesnotificationthatacallhasbeenforwarded(note1)NoCFUCFBCFNRYes,withcallofferinginformationSCFUSCFBSCFNRCallinguserisnotifiedofdiversion(forwardedordeflected)(note1)NoCFUCFBCFNRYes,withdiverted-tonumberCDSCFUYes,withoutdiverted-tonumberSCFBSCFNRServeduserreceivesremindernotificationonoutgoingcallsthatforwardingiscurrentlyactivated(note1)NoCFUCFBCFNRYesSCFUSCFBSCFNRDivertingnumberisreleasedtothediverted-touser(note1)NoCFUCFBCFNRCDYesSCFUSCFBSCFNRActivation,deactivationandinterrogationforallISDN-numbersonthesameaccess(incaseofsubscriptiononaperISDNnumberorDDIbasis)NoCFUCFBCFNR(note2)YesSCFUSCFBSCFNRNOTE1:Theseoptionsapplyseparatelytoeachinstanceofthesupplementaryservicethattheuserhassubscribedto.NOTE2:Thisoptionappliestoalltheinstancessubscribedtoontheaccessoftheserveduserfortherelatedsupplementaryservice.Thefollowingnetworkprovideroptionsareavailableforthediversionsupplementaryservices.ThenetworkprovideroptionsfortheCFUsupplementaryservicearegiveninETS300200[15].ThenetworkprovideroptionsfortheCFBsupplementaryservicearegiveninETS300199[14].ThenetworkprovideroptionsfortheCFNRsupplementaryservicearegiveninETS300201[16].ThenetworkprovideroptionsfortheSCFsupplementaryservicearegiveninEN301133[18].ThenetworkprovideroptionsfortheCDsupplementaryservicearegiveninETS300202[17].ThenetworkprovideroptionsfortheDiversionserviceenhancementsbasedonDDIrangesaregiveninES201481[20].Thesenetworkprovideroptionsaresummarizedintable2.SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)15Table2:NetworkprovideroptionsfordiversionsupplementaryservicesNetworkprovideroptionValueApplicabilityServedusercallretentiononinvocationofdiversion(forwardingordeflection)Retaincalluntilalertingbeginsatthediverted-touserCFNRCDSCFNRClearcalloninvocationofdiversionSCFUSCFBSCFNRnote1ThemaximumnumberofdiversionsforasinglecallMaximumnumberofdivertedconnections(withanupperlimitof5)CFUCFBCFNRCDSCFUSCFBSCFNRCallforwardingonnoreplytimerTimerdurationshallbeanetworkprovideroptionCFNRSCFNRPartialrerouteingprovidedattheTreferencepoint(note2)YesCFUCFBSCFUSCFBNoCFNRSCFNRCDThecall-by-callindicationoverridesthevalueofthesubscriptionoption"DivertingnumberisreleasedtoYesCDthediverted-touser"NoThemaximumnumberofactivescreeninglistsperaccess/number/DDIrangeinrange1-15SCFUSCFBSCFNRThemaximumnumberofentriesperscreeninglistinrange1-20SCFUSCFBSCFNRYesTheprovisionofDiversionservicesbasedonDDInumberrangesNoCFUCFBCFNRSCFUSCFBSCFNRCDNOTE1:Thisoptionalsoappliesforcalldiversionbypartialrerouting.NOTE2:PartialrerouteingmaybeinvokedbytheprivatenetworktowardsthepublicnetworkwhentheCFU,CFB,CFNR,SCFU,SCFB,SCFNRorCDsupplementaryservicesareinvokedintheprivatenetwork.6.2Requirementsonthecallinguser'snetworksideTheproceduresatthecoincidentSandTreferencepointinEN300403-1[11],subclause5.1andtheproceduresofsubclauses9.2.1,9.2.2and9.2.3inthepresentdocumentapply.6.3Requirementsontheserveduser'snetworksideTheproceduresatthecoincidentSandTreferencepointinEN300403-1[11],subclause5.2andtheproceduresofsubclauses9.1,9.2.4and9.3inthepresentdocumentapply.6.4Requirementsonthediverted-touser'snetworksideTheproceduresatthecoincidentSandTreferencepointinEN300403-1[11],subclause5.2andtheproceduresofsubclause9.2.5inthepresentdocumentapply.SIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)167Codingrequirements7.1CodingoftheFacilityinformationelementcomponentsTable3showsthedefinitionsoftheoperationsanderrorsrequiredforthediversionsupplementaryservicesusingASN.1asspecifiedinCCITTRecommendationX.208[1]andusingtheOPERATIONandERRORmacroasdefinedinfigure4/X.219[2]ofCCITTRecommendationX.219[2].Table3ashowsthedefinitionsoftheoperationsanderrorsrequiredfortheselectivecallforwardingsupplementaryserviceusingASN.1.TheformaldefinitionofthecomponenttypestoencodetheseoperationsanderrorsisprovidedinEN300196-1[13],clauseD.1.TheinclusionofcomponentsinFacilityinformationelementsisdefinedinEN300196-1[13],subclause11.2.2.1.Allcomponents(invoke,returnresult,returnerrorandreject)shallbeincludedwithinaFacilityinformationelement.ThisFacilityinformationelementmaybeincludedinanyappropriatemessageasspecifiedinEN300196-1[13],subclause8.3.1.1,unlessamorerestrictivespecificationisgiveninclause9.Table3:DefinitionofoperationsanderrorsDiversion-Operations{ccittidentified-organizationetsi(0)207operations-and-errors(1)}DEFINITIONSEXPLICITTAGS::=BEGINEXPORTSActivationDiversion,DeactivationDiversion,ActivationStatusNotificationDiv,DeactivationStatusNotificationDiv,InterrogationDiversion,InterrogateServedUserNumbers,DiversionInformation,CallDeflection,CallRerouteing,DivertingLegInformation1,DivertingLegInformation2,DivertingLegInformation3,InvalidDivertedToNr,SpecialServiceNr,DiversionToServedUserNr,IncomingCallAccepted,NumberOfDiversionsExceeded,NotActivated,RequestAlreadyAccepted,invalidDivertedToNr,specialServiceNr,diversionToServedUserNr,incomingCallAccepted,numberOfDiversionsExceeded,notActivated,requestAlreadyAccepted,ServedUserNr;IMPORTSOPERATION,ERRORFROMRemote-Operation-Notation{joint-iso-ccittremote-operations(4)notation(0)}notSubscribed,notAvailable,invalidServedUserNr,basicServiceNotProvided,supplementaryServiceInteractionNotAllowed,resourceUnavailableFROMGeneral-Errors{ccittidentified-organizationetsi(0)196general-errors(2)}PresentedAddressScreened,PresentedNumberUnscreened,Address,PartyNumber,PartySubaddress,PresentationAllowedIndicatorSIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)17FROMAddressing-Data-Elements{ccittidentified-organizationetsi(0)196addressing-data-elements(6)}BasicServiceFROMBasic-Service-Elements{ccittidentified-organizationetsi(0)196basic-service-elements(8)}Q931InformationElementFROMEmbedded-Q931-Types{ccittidentified-organizationetsi(0)196embedded-q931-types(7)};ActivationDiversion::=OPERATIONARGUMENTSEQUENCE{procedureProcedure,basicServiceBasicService,forwardedToAddressAddress,servedUserNrServedUserNr}RESULTERRORS{notSubscribed,notAvailable,invalidServedUserNr,supplementaryServiceInteractionNotAllowed,basicServiceNotProvided,resourceUnavailable,InvalidDivertedToNr,SpecialServiceNr,DiversionToServedUserNr}--EndofActivationDiversionoperationdefinitionDeactivationDiversion::=OPERATIONARGUMENTSEQUENCE{procedureProcedure,basicServiceBasicService,servedUserNrServedUserNr}RESULTERRORS{notSubscribed,notAvailable,invalidServedUserNr,NotActivated}--EndofDeactivationDiversionoperationdefinitionActivationStatusNotificationDiv::=OPERATIONARGUMENTSEQUENCE{procedureProcedure,basicServiceBasicService,forwardedToAddresssAddress,servedUserNrServedUserNr}--EndofActivationStatusNotificationDivoperationdefinitionDeactivationStatusNotificationDiv::=OPERATIONARGUMENTSEQUENCE{procedureProcedure,basicServiceBasicService,servedUserNrServedUserNr}--EndofDeactivationStatusNotificationDivoperationdefinitionInterrogationDiversion::=OPERATIONARGUMENTSEQUENCE{procedureProcedure,basicServiceBasicServiceDEFAULTallServices,servedUserNrServedUserNr}RESULTIntResultListERRORS{notSubscribed,notAvailable,invalidServedUserNr}--EndofInterrogationDiversionoperationdefinitionInterrogateServedUserNumbers::=OPERATIONSIST EN 300 207-1 V2.0.1:2003

ETSIETSIEN300207-1V2.0.1(2000-04)18RESULTServedUserNumberListERRORS{notSubscribed,notAvailable}--EndofInterrogateServedUserNumbersoperationdefinitionDiversionInformation::=OPERATIONARGUMENTSEQUENCE{diversionReasonDiversionReason,basicServiceBasicService,servedUserSubaddressPartySubaddressOPTIONAL,callingAddress[0]PresentedAddressScreenedOPTIONAL,originalCalledNr[1]PresentedNumberUnscreenedOPTIONAL,lastDivertingNr[2]PresentedNumberUnscreenedOPTIONAL,lastDivertingReason[3]DiversionReasonOPTIONAL,userInfoQ931InformationElementOPTIONAL}--TheUser-userinformationelement,asspecifiedinEN300286-1[19]subclause7.3.3--,shallbe--embeddedintheuserInfoparameter.--EndofDiversionInformationoperationdefinitionCallDeflection::=OPERATIONARGUMENTSEQUENCE{deflectionAddressAddress,presentationAllowedDivertedToUserPresentationAllowedIndicatorOPTIONAL}RESULTERRORS{notSubscribed,notAvailable,InvalidDivertedToNr,SpecialServiceNr,DiversionToServedUserNr,IncomingCallAccepted,NumberOfDiversionsExceeded,supplementaryServiceInteractionNotAllowed,RequestAlreadyAccepted}--EndofCallDeflectionoperationdefinitionCallRerouteing::=OPERATIONARGUMENTSEQUENCE{rerouteingReasonDiversionReason,
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