ETSI TS 182 025 V2.1.1 (2008-09) Telecommunication

ETSITS182025V2.1.1(2008-09)TechnicalSpecificationTelecommunicationsandInternetconvergedServicesandProtocolsforAdvancedNetworking(TISPAN);Businesstrunking;ArchitectureandfunctionaldescriptionETSIETSITS182025V2.1.1(2008-09)2ReferenceDTS/TISPAN-02042-NGN-R2Keywordsarchitecture,functional,trunkingETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableat:©EuropeanTelecommunicationsStandardsInstitute2008.Allrightsreserved.DECTTM,PLUGTESTSTM,UMTSTM,TIPHONTM,theTIPHONlogoandtheETSIlogoareTradeMarksofETSIregisteredforthebenefitofitsMembers.3GPPTMisaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartners.ETSIETSITS182025V2.1.1(2008-09)3ContentsIntellectualPropertyRights................................................................................................................................6Foreword.............................................................................................................................................................61Scope........................................................................................................................................................72References................................................................................................................................................72.1Normativereferences.........................................................................................................................................72.2Informativereferences........................................................................................................................................93Definitionsandabbreviations...................................................................................................................93.1Definitions..........................................................................................................................................................93.2Abbreviations.....................................................................................................................................................94Overview................................................................................................................................................104.1Generalprinciples.............................................................................................................................................104.2Accessnetworkinterconnection.......................................................................................................................104.3Servicelevellayerinterconnection..................................................................................................................115Functionalarchitecture...........................................................................................................................115.1General.............................................................................................................................................................115.2Subscriptionbasedbusinesstrunking...............................................................................................................125.2.1General........................................................................................................................................................125.2.2Usedfunctionalentitiesattheservicelayer................................................................................................125.2.3Usedreferencepointsattheservicelayer...................................................................................................125.2.4Usedfunctionalentitiesatthetransportlayer.............................................................................................125.2.5Usedreferencepointsatthetransportlayer................................................................................................135.3Peering-basedbusinesstrunking.......