ITU-T I.326 (03 2003) (英) Functional architecture of transport……

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1、INTERNATIONALTELECOMMUNICATIONUNIONITU-TI.326TELECOMMUNICATION(03/2003)STANDARDIZATIONSECTOROFITUSERIESI:INTEGRATEDSERVICESDIGITALNETWORKOverallnetworkaspectsandfunctions–ReferencemodelsFunctionalarchitectureoftransportnetworksbasedonATMITU-TRecommendati

2、onI.326ITU-TI-SERIESRECOMMENDATIONSINTEGRATEDSERVICESDIGITALNETWORKGENERALSTRUCTURETerminologyI.110–I.119DescriptionofISDNsI.120–I.129GeneralmodellingmethodsI.130–I.139TelecommunicationnetworkandserviceattributesI.140–I.149Generaldescriptionofasynchronou

3、stransfermodeI.150–I.199SERVICECAPABILITIESScopeI.200–I.209GeneralaspectsofservicesinISDNI.210–I.219CommonaspectsofservicesintheISDNI.220–I.229BearerservicessupportedbyanISDNI.230–I.239TeleservicessupportedbyanISDNI.240–I.249SupplementaryservicesinISDNI.

4、250–I.299OVERALLNETWORKASPECTSANDFUNCTIONSNetworkfunctionalprinciplesI.310–I.319ReferencemodelsI.320–I.329Numbering,addressingandroutingI.330–I.339ConnectiontypesI.340–I.349PerformanceobjectivesI.350–I.359ProtocollayerrequirementsI.360–I.369Generalnetwor

5、krequirementsandfunctionsI.370–I.399ISDNUSER-NETWORKINTERFACESApplicationofI-seriesRecommendationstoISDNuser-networkinterfacesI.420–I.429Layer1RecommendationsI.430–I.439Layer2RecommendationsI.440–I.449Layer3RecommendationsI.450–I.459Multiplexing,rateadap

6、tionandsupportofexistinginterfacesI.460–I.469AspectsofISDNaffectingterminalrequirementsI.470–I.499INTERNETWORKINTERFACESI.500–I.599MAINTENANCEPRINCIPLESI.600–I.699B-ISDNEQUIPMENTASPECTSATMequipmentI.730–I.739TransportfunctionsI.740–I.749ManagementofATMeq

7、uipmentI.750–I.759MultiplexingaspectsI.760–I.769Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.ITU-TRecommendationI.326FunctionalarchitectureoftransportnetworksbasedonATMSummaryThisRecommendationdescribesthefunctionalarchitectureoftheATMtra

8、nsportassemblyusingthetransportfunctionalarchitecturedefinedinITU-TRec.G.805.TheATMtransportassemblyconsistsoftheVClayernetwork,theVCtoVPadaptation,theVPlayernetworkandtheVPtoTransmissionpathadaptation.Thefeaturesdescribed