思科网络技术培训之13：ISDN.ppt

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1、ObjectivesUponcompletionofthischapter,youwillbeabletoperformthefollowingtasks:DescribethecomponentsthatmakeupISDNconnectivityConfigureISDNBRIandlegacydial-on-demandrouting(DDR)VerifyDDRoperationWhatisISDN?ProvidernetworkDigitalPBXSmallofficeHomeofficeVoice,data,video,

2、andspecialservicesTelecommuterCentralsiteDchannel:分路信令，veryfastBchannel：64KStandardsfromtheITU(formerlyCCITT)ISDNStandardsProtocolKeyExamplesTelephoneNetworkandISDNISDNConcepts,Aspects,andInterfacesSwitchingandSignalingI-SeriesQ.921—LAPD(LinkAccessProcedureontheDchanne

3、l)Q.931—ISDNNetworkLayerbetweenTerminalandSwitchQ-SeriesIssueE-SeriesE.163—InternationalTelephoneNumberingPlanE.164—InternationalISDNAddressingI.100Series—Concepts,Structures,TerminologyI.400—User-NetworkInterfaces(UNIs)BRIandPRIareusedgloballyforISDNChannelMostly

4、UsedforBCircuit-switcheddata(HDLC,PPP)Capacity64kbpsD2BServiceprovidernetworkNT1ISDNAccessOptionsSignalinginformation(LAPD)D16/64kbpsCSU/DSU23or30BBRIPRID31BRICallProcessingISDNserviceprovider4Bchannel(s)Dchannel/SS7signaling2SS7ISDNSwitchISDNSwitchISDNFunctionsandR

5、eferencePointsFunctionsaredevicesorhardwareReferencepointsaredemarcationsorinterfacesNT1TATE2TE1NT2LocalloopExistingTerminalISDNTerminalTerminalAdapterRSTUServiceprovidernetworkCiscoISDNBRIInterfacesTAS/TRServiceprovidernetworkNativeISDNinterface—intbri0NonnativeI

6、SDNinterface—intserial0(EIA/TIA-232,V.35,X.21)NT1NT1S0S/Tbri0Ubri0TE1NT1TE1TE2ManyprovidersandswitchtypesServicesvarybyregionsandcountriesISDNSwitchTypesCOCOSSSSSSSSSSSSSRouter(config)#isdnswitch-typeswitch-typeConfiguringISDNBRISpecifiesthetypeofISDNswitchwithwhichth

7、eroutercommunicatesOtherconfigurationrequirementsvaryforspecificprovidersStep1:SpecifytheISDNswitchtypeRouter(config-if)#isdnswitch-typeswitch-typeSetsaBchannelSPIDrequiredbymanyserviceprovidersConfiguringISDNBRI(cont.)Step2:(Optional)SettingSPIDsSetsaSPIDforthesecondB

8、channelRouter(config-if)#isdnspid1spid-number[ldn]Router(config-if)#isdnspid2spid-number[ldn]Someserviceprovidersrequ