电信发展大趋势

电信传输研究所赵慧玲

电信网络技术的发展9/27/20231电信网络技术的发展RITT赵慧玲为信息产业部研究发展策略，技术体制,规范和标准，测试和任证。为电信运营公司提供技术支持：进行设备选型和技术咨询。例如：IN，SS7，ISDN，同步网，编号，SDH，WDM，接入网，帧中继，多媒体，ATM，IP，IP电话，GSM，CDMA，高速讯呼和IMT－2000。

电信传输研究所9/27/20232电信网络技术的发展RITT赵慧玲图1我国电信网的构成

公用无线数据网B-ISDNFRNX.25DDNN-ISDNPSTN业务网支撑网No.7信令网同步网电信管理网传送网话音平台智能网公共业务平台电子邮件/传真存储转发/EDI语音信息台多媒体信息服务台IP网移动网9/27/20233电信网络技术的发展RITT赵慧玲AnnualRevenueAnnualIncomeNote:Level3hadhighExtraordinaryRevenuesin1998thatmorethancompensatedtheLossonOrdinaryOperationsshowninthischartMCIWorldcomRevenuemixAT&TrevenuemixAT&Trevenuemixwasthefollowingin1998:Businessservices:23,611MillionUSD(or44%oftherevenue)Consumerservices:22,885MillionUSD(43%)Wirelessservices:5,406MillionUSD(10%)Otherservices:1,321MillionUSD(2%)AT&TisjuststartingtointroduceBroadband&InternetServicesintheirreporting.Theseaccountedfor3.4%oftheirrevenuesinthe1Q99.Voice: 91-92 92-93 93-94 94-95 95-96Maintelephonesinservice: +36% +51% +57% +49% +35%Data:NumberofInternethosts: - - - +277% +820%NumberofPCs: - +37% +55% +44% +42%ConclusionThereisstillalotofgrowthintraditionalvoiceTherevenueslargelycomefromthevoicetraffic

Trafficvolumegrowthofvoiceanddata

TheChinafigures,asproposedbyITU9/27/20238电信网络技术的发展RITT赵慧玲ExpectedgrowthofVoice-over-IPBy2002,VoIPisexpectedtobe10.8%oftotalvoicetraffic

(national+international)(Internet+IPmanagednetworks)

ForChinatheforecastis1.2%in2002;4.5%in2005Traditionalvoicehastobesupportedforalotofyears!Source:IDC/LinkBCGanalysisSource:OVUMReport123Segmentationofoperators

BasedonthebackboneprotocolEstablishedoperatorslookingforveryopenmultiservicenetworksFordata:useofATMbackbonetotransportIPandFRForvoice:optimizationofcircuitnetworks(ATMbackbone,voiceoverSDH,trunkingofVoATMandVoIPintheexistingnetwork)FullsupportofexistingservicesandintroductionofnewservicesNewtelecomoperatorscontinuingATMdeployment,carryingIP,VoiceandFrameRelayInternetserviceprovidersandnewentrantsaskingforpureIPswitchingbackboneATMandIPdeploymentinthebackboneExistingvoicenetworkintegrationonATMmigrationtoIPATMmigrationtoIPIPdeployment132ThechoicesofsomeUSoperators

ATM,ATM/IPorIPEstablishedoperators,focusingonATM(multi-servicenetworks)RBOCs(Ameritech,BellAtlantic,BellSouth,SBCCommunications,USWEST),MCI,GTE,IXC,AT&T,(Sprint(ION):novoiceyet)Newentrants,focusingonATM(delayedmigratingtoIP)Williams,QwestNewentrantsfocusingonpureIPbackbones

(managedIPnetworks)Level3,Frontier,UUNet132宽带平台和接入的技术焦点IPoverATM/SDH/FIBER观点之一：G交换路由器＋优化光纤网络新一代网络集话音、视频和数据为一体；带宽“第一目标”，其它次要地位，提高竞争力；统一IP，不必顾及多业务，可解决QOS；避免ATM的复杂和开销，降低复杂性；CIPOA、LANE在实时业务时不能保证QOS；成本降低几十倍；利用HFC，STB和CableModem是IP产品适合城域网；电话业务的价格提供多媒体信息服务。9/27/202313电信网络技术的发展RITT赵慧玲宽带平台和接入的技术焦点IPoverATM/SDH/FIBER观点之二：ATM＋SDH完善的QOS；业务的灵活性：IP、实时和其它业务；综合效益高；符合公网发展方向，在全球大量采用；G交换路由器仅适合纯IP骨干；新技术和新协议发展快、风险大，可局部试验；面临管理、工程、学术等不同问题。9/27/202314电信网络技术的发展RITT赵慧玲3、面临的可能挑战（1）IP带来的技术挑战QOS，COS的提供策略（IP-Qos、ATM-Qos）；标准的把握：CIPOA，MPLS，RSVP，Signaling等等；IntegratedServices，DifferentiatedServices；Multicast；xDSL引入策略（PVC、SVC、PPP、Cell/IPatdesk等等）；技术试验的内容、范围、方式和步骤；宽带业务的引入策略。9/27/202315电信网络技术的发展RITT赵慧玲3、面临的可能挑战（2）业务挑战宽带业务（近期的选择）：

接入：xDSL/CableModem/Ethernet/ATM25;

终端：TV、PC;

应用：IP/Cell/WebTV（Web、Video、Multicast）；

服务：管理性、可靠性。9/27/202316电信网络技术的发展RITT赵慧玲

新形势对电信网的要求(1)1).目前的电信网是为电话设计的，正在改造以便传数据和图象。未来的趋势将主要按数据业务来设计网络，但可用来传电话，数据和图象业务。对现有电路交换网的改造是不可避免的！(例子：Cisco总工的预言)-象WorldCom这样的少数新兴电信公司的网络数据业务量已超过电话，而象AT&T,USSprint等传统电话公司的网络数据业务量也将在2005年左右超过电话业务量9/27/202317电信网络技术的发展RITT赵慧玲-大型电信公司都在调整部署，削减传统公用电信网部门，加强数据通信特别是IP产品部门（例子：爱立信）2).TCP-IP将成为电信网的主导的上层通信语言3).必须保证网络端到端的服务质量（QoS），为此核心网部分必须引入SDH+ATM并保证其可用性与电话网相当。4).电信网的大趋势是逐步实现分组化，无连接化和全球寻址，最终形成一无缝的IP网络结构！新形势对电信网的要求(2)9/27/202318电信网络技术的发展RITT赵慧玲5)必须暂时放弃端到端ATM连接的理想，用户处将以以太网/快速以太网和IP接入为主6)铜缆接入网必须改造，出路光纤+无线7)为应付IP及其他业务引起的巨大压力,以WDM技术为代表的下一代大容量光网络建设势在必行，长途主干线上应开始应用新一代光纤，各种IP业务的旁路技术也大有市场8)对电信公司，实现电话和数据的融合是首要任务，下一步才是多媒体，三网融合是长远目标新形势对电信网的要求(3)9/27/202319电信网络技术的发展RITT赵慧玲

下一代网络Newpublicnetwork(NPN)新的公用网Unifiednetwork一体化网Continuouslyupgrablenetwork

可持续发展的网络R/S9/27/202320电信网络技术的发展RITT赵慧玲CoreNetworkMigrationforIPPremiumService

=Money-Making =ControlledQoSRegularBestEffort

=NotMoney-Making =SuppressInvestmentAccessNetworkAccessNetworkIP/ATM“Premium”Servicesw/ControlledQoSIP/SONETorWDMRegularBest-EffortServicesIPCoreNetwork9/27/202321电信网络技术的发展RITT赵慧玲可持续发展网络的基本要求可支持现有和将有的所有业务具有巨大的可持续扩容的链路容量和节点容量,因而物理层一定是以WDM为基础，以OADM与OXC为节点的光传送网TCP-IP将成为主导的上层通信语言，但不完全排除其他通信协议，因而可同时支持现有电路交换网，ATM网，以太网和宽带IP网具有很高的网络和业务生存性最终将是以IP为基础的无缝融合的网9/27/202322电信网络技术的发展RITT赵慧玲电话网网关数据核心网

IP/ATM/SDH/Optical接入服务器以数据为主的未来网络结构Internet大企事业居民接入服务器RRATMSW9/27/202323电信网络技术的发展RITT赵慧玲IPoverOpticalIPoverSDHIPoverATM未来的IP分层传送网9/27/202324电信网络技术的发展RITT赵慧玲Multi-ServicesData-CentricNetworkVisionPOTSISDNPSTNSignalingGatewayPOTSIPAccessServerxDSLResidentialGatewayOtherBusinessMUXEdgeSwitchRADIUSServersBillingServersNameServersDataVPNSessionManagersNetworkManagementServiceandBusinessManagementNetworkDatabasesPSTNFeaturesServersResourceServersNetworkandServiceManagementRASPOTSISDNPOTSISDNOC3xDSLRemoteAccessServerVoiceATMLANsNIUNIUFixedWirelessBusinessWirelessPacketCircuitGatewayFirewall...InternetPSTNSDH/OpticalCoreNetworkIP/ATM/SDH/Optical9/27/202325电信网络技术的发展RITT赵慧玲7R/EArchitectureAnyVendor’sTandemorLongDistanceOfficeVoice/Data/VideoMulti-ServicePacketNetworkSS7NetworkSTPATM/IPCoreNetworkATIXCEOFeatureServersMulti-MediaResourceServerOneLinkOAM&PManagerSCPPacketGatewaysAnyVendor’sEndOfficePacketGatewaysFullRangeofNarrow&BroadBandCircuit&PacketAccessFullRangeofNarrow&BroadBandCircuit&PacketAccess9/27/202326电信网络技术的发展RITT赵慧玲Howpacketnetworkscanprovidevoiceservicesthatarecompetitivewithcircuitswitchednetworks7R/Eis...7R/E

Multi-ServiceSolutionATIXCEOPacketGatewaysAnyVendor’sEndOfficePacketGatewaysFullRangeofNarrow&BroadbandCircuit&PacketAccessPacketNetworkFeatureServerOneLinkOAM&PManagerMulti-MediaResourceServerFullRangeofNarrow&BroadbandCircuit&PacketAccess9/27/202327电信网络技术的发展RITT赵慧玲7R/Eis...7R/E

PacketLocalSolutionHowothervendor’send-officeswitchescanuselowercostpackettransportandprovidenewIP/ATMbasedfeatures&servicesPacketNetworkCircuitNetworkTrunkAccessGatewayLineAccessGatewayFeatureServerOneLinkOAM&PManagerMulti-MediaResourceServer9/27/202328电信网络技术的发展RITT赵慧玲CircuitNetwork7R/Eis...Howtomorrow’standemsarebuilttovirtuallyeliminatetandemcongestionandexhaust7R/E

PacketTandemSolutionPacketGatewaysPacketGatewaysFeatureServer(s)OneLinkOAM&PManager)9/27/202329电信网络技术的发展RITT赵慧玲7R/Eis...Howthe5ESSistransformedintoa7R/Etoachieverapidfeaturecreationandalmostunlimitedscaleability

7R/E

PacketDriver(5ESSto7R/Etransformation)AMLineUnitsSM2000SMPTrunkUnitsPacketGatewaysOneLinkOAM&PManagerHub/BridgeorSwitch/RouterPacketGatewaysPacketGatewaysLineUnitsSM2000SMPTrunkUnitsLineUnitsSM2000SMPTrunkUnitsCM2FeatureServer(sMulti-MediaResourceServer9/27/202330电信网络技术的发展RITT赵慧玲7R/Eis...Howcircuitandpacketnetworkswilloff-loaddial-updatatrafficandofferremoteaccessservices7R/E

Dial-upDataSolution(MultiServicesModule)PacketNetworks(IP/FR/ATM)PublicInternetISPInter-OfficeCircuitNetworksMSMMSMMSMMSM9/27/202331电信网络技术的发展RITT赵慧玲CoreDataNetworkTodayIPandnon-IPtrafficiscarriedoverATM/SDHcoreConnectionsbetweenroutersareatsub-OC-3ratesATMswitchesaggregatetrafficOpticalLineSystemsaredeployedllIP/ATMATMSwitchATMSwitchATMSwitchATMSwitchRouterRouterRouterNon-IPDataSourceNon-IPDataSourceIPDataSourceIPDataSourceSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMOpticalLineSystemNon-IPDataSource9/27/202332电信网络技术的发展RITT赵慧玲CoreDataNetwork

TomorrowWhilenetworkgrows,routersandswitchesareaddedRoutersthatareinterconnectedviaOC-3pipesorhigher

canuseIP/SDHinterfaces.ATMtrafficaggregationattheedgesofthenetworkwillcontinueATMswitchingandSDHXCintegratedinoneNEIP/SDHlATMSwitchlATMSwitchATMSwitchSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMRouterRouterRouterRouterRouterRouterSDHDCS/ADMIPDataSourceIPDataSourceIPDataSourceATMSwitchSDHDCS/ADMRouterRouterNon-IPDataSourceNon-IPDataSourceATMSwitchRouterNon-IPDataSourceSDHDCS/ADMOpticalLineSystem9/27/202333电信网络技术的发展RITT赵慧玲RoutersthatareinterconnectedviaOC-48pipesorhighercanuseIP/WDMinterfacesRoutersperformtheinterworkingfunctionbetweenIP/ATM,IP/SDHandIP/WDMCoreNetwork-BeyondllIP/WDMlRouterRouterRouterRouterRouterRouterIP/SDHSDHDCS/ADMSDHDCS/ADMRouterRouterRouterRouterATMSwitchATMSwitchRouterRouterATMSwitchATMSwitchSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMRouterRouterRouterATMSwitchNon-IPDataSourceIPDataSourceIPDataSourceIPDataSourceNon-IPDataSourceOpticalXC/ADMOpticalXC/ADMOpticalLineSystemOpticalLineSystem9/27/202334电信网络技术的发展RITT赵慧玲PSTNATMPSTNATMPSTNExchangeATMExchangeEWSDBroadbandNodeEWSDBroadbandNode-

ChangingBroadbandNetworkScenario9/27/202335电信网络技术的发展RITT赵慧玲LocalNetworkwithEWSDBroadbandNodeEWSDOAM

incl.

ATMandDSLATMPSTNSS7Remote

SiteRemote

SiteEWSD

BroadbandNode9/27/202336电信网络技术的发展RITT赵慧玲EWSDBroadbandNode-

EmbeddinginExistingNetworksLegacyNodeorConcentratorLocalExch.EWSDInnovationNodeEWSDInnovationNodeTrunkExch.SDHPHDLUSDH/PDHRSURemoteSwitchingUnitDLUDigitalLineUnitPHPacketHubFRFrameRelayBroadbandPSTN/ISDNRSUotherATM/FRnetworkMSPstandaloneATMswitche.g.36170/36190BroadbandPSTN/ISDNDLUPHPH9/27/202337电信网络技术的发展RITT赵慧玲E-CubeNGSAdaptationtoHybridSolutionAnalog/N-ISDNATMUNIProcessorIP/ATMIP/ATMMPLSLabelmappingSTMModuleIWUFETEX-150E-CubeLAN9/27/202338电信网络技术的发展RITT赵慧玲E-CubeATMSwitchwithMPLSMPLSModuleLDP :LabelDistributionProtocolOSPF :OpenShortestPathFirstBGP-4 :BorderGatewayProtocolVer.4BSGC :BroadbandSignalingControlPVC :PermanentVirtualConnectionBCPR :BroadbandCallProcessorAPI :ApplicationProgramInterfaceFETEX-150

ATMUNILineLineLineAPIBCPRBSGCAPIRoutingProtocols

IPdataconnectionLDP,BGP-4,OSPF signalingconnectionRoutingsignaling(OSPF,BGP-4) termination(ManagementIProutingtable)LDPtermination(Labelassignment: ManagementofIPaddressandLabel (VPI,VCI)information)OrderofconnectionsetupviaAPI

ATMterminationAALterminationRelayofAPIinformation

APIinformationCommunicationwithMPLS modulethroughAPI(Software)ConnectionsetupManagementofconnection information

ConnectionsetupOSPF/BGP4/LDPVCImapSetupSetupOC-3SwitchOSPF,BGP-4,LDP9/27/202339电信网络技术的发展RITT赵慧玲E-CubeNGSAdaptationtoATM-centricSolutionFETEX-150E-CubeAnalog/N-ISDNATMUNISTMModuleATMModuleProcessorIP/ATMIP/ATMIWUIPMLAN9/27/202340电信网络技术的发展RITT赵慧玲E-CubeLocalSwitchL2TP(AccessConcentrator) —AllowssubscriberstoselectISPs —AggregatesIPpacketforthesamedestinationSTMATMResidentialPowerUserSOHOG.LiteADSLHDSL/SDSLDSLAMISPISPInternetBackbonePOTSIP/ATMIP/ATMPOTSPOTSIP/ATME-CubeNGSLocalSwitchL2TPDSLAM9/27/202341电信网络技术的发展RITT赵慧玲TelecomNetworkMigration–1CircuitSwitchesLegacyVoiceSTM9/27/202342电信网络技术的发展RITT赵慧玲TelecomNetworkMigration–2ATMPlaneLegacyVoiceSTMMobileMSCBSC9/27/202343电信网络技术的发展RITT赵慧玲TelecomNetworkMigration–3IP/ATMw/MPLSLegacyVoiceMobileMSCBSCISPATMVoiceTandemIPRouterNet9/27/202344电信网络技术的发展RITT赵慧玲TelecomNetworkMigration–4VoiceTandemIPCoreLayer#1MPLSISPBSCMSC“BestEffort”“Quality”IPIPEdgeLayer9/27/202345电信网络技术的发展RITT赵慧玲TelecomNetworkMigration–5VoiceTandemIPCoreLayer#1MPLSISPBSCMSCIPEdgeLayerAPIIntegratedAccessSWNetworkServer/AgentClusters9/27/202346电信网络技术的发展RITT赵慧玲Alcatel1000S12Alcatel’stransitionstrategy

S12NarrowbandS12NarrowbandHandlesNBservices(POTSandISDN)RSU

ARCUDSNNBcontrolvoice(E1:2Mb/s)voice(POTS/ISDN)1Alcatel1000S12Alcatel’stransitionstrategy

S12withMPSRandSDHS12withMPSRandSDHlinksNBservicesoverBBtransportAvailability:1998RSU

ARCUNBcontrolvoice(E1:2Mb/s)VoSDHDSNvoice(STM-1VC-12:155Mb/s)voice(POTS/ISDN)MPSR2Alcatelstransitionstrategy

Onlynarrowbandservices,fewATMlinksS12withATMlinksandNB/BBtransportinterworkingOfferintegratedVoATMandVoIPdependingonthepositioninthenetworkAlcatel1000S12RSU

ARCUVoIPandIP

(AAL-5:155Mb/s)VoIPRANNBcontrolvoice(E1:2Mb/s)voice(POTS/ISDN)VoATM(AAL-1:155Mb/s)InternetVoATMDSNmobilevoice(AAL-2:155Mb/s)3Alcatel’stransitionstrategy

BroadbandservicesandlotofATMlinksS12withSDHlinks,ATMlinksandNB/BBinterworkingOfferBBservices,plusintegratedVoATMandVoIP,dependingonthepositioninthenetworkAvailability:2000Alcatel1000S12RSU

ARCUIP(ATM:155Mb/s)DSNVoIPRANVoSDHNBcontrolvoice(E1:2Mb/s)voice(STM-1:155Mb/s)voice(POTS/ISDN)voice,data(ATM:155Mb/s)MSANADSLInternetBBcontrolVoATMMPSRATM4Alcatel1000S12Alcatel’stransitionstrategy

S12inaMulti-ServicenetworkS12inaMulti-ServicenetworkBSCA2GAccess3GAccessSTM1/4NetworkServicesFeatures/DirectoryCAccess

ControlPSTNBISDNAnalogBRAATM25Mb/sor10Mb/sEthernetNTMxDSLNTxDSLOther

Servers

(billing,etc.)CallServerG3BSCIuMSANInternetIProuterATMservices:

-AAL1,AAL2,AAL5-SVC,PVCDSNVoIPRANNBcontrolBBcontrolVoATMVoSDHMPSR5SPRINTUNVEILS

REVOLUTIONARYNETWORKHigh-Speed,High-Bandwidth,

Multi-FunctionCapabilitiesOverSinglePhoneLineNEWYORK,June2,1998--Sprintannouncedtodayarevolutionarynewtelecommunicationscapabilitythatcanprovidehomesandbusinesseswithvirtuallyunlimitedbandwidthoverasingleexistingtelephonelineforsimultaneousvoice,videocallsanddataservices.BuildingtheNewWorldNewarchitecturefordeployingvoice,video,anddataservicesMakesusofATM,IP,andDSLtechnologiesSwitchedvoiceservicesInternet,intranet,andextranetservicesBroadbandtothehomeandsmallbusinessFaulttolerantHighqualityFlexible9/27/202353电信网络技术的发展RITT赵慧玲SprintIONArchitectureSprintPOPSprintPOPIP+ATMLocalAccessTelecommuterSOHOResidentialRemoteOffice,BranchOfficeEnterpriseSprintPOPInternetAccessPSTNMulti-ServiceMuxinCPECiscoMGX8800CiscoMGX8800DS1andNxDS1Cisco6xxDS3/OC-3Cisco3810Cisco26/3600CPEDS1Intra-CityATMLECPOPInternetPOPPOPxDSLDS1xDSLIP+ATMEdgeCiscoRouterIP+ATMCorePSTNGWIP+ATMBackbonePSTNNetworkMulti-ServicesRouter9/27/202355电信网络技术的发展RITT赵慧玲TGW,AGWDGWSGW,MGC,SENMSWCSWRCSprintIONModel

SuccessionNetwork-

AllDistanceNetwork

TDMSwitchTDMSwitchTDMSwitchTDMCoreSPMSPMSTM1XA-CoreDMSSTM1DS1SPMTandemSDMDeliverskeysetoflocalandlongdistanceservicesonasingleplatformEnablestheintegrationoflocalandlongdistanceserviceEnablesaflatternetwork,significantlyreducingcomplexityandreducingCostofOwnershipOpensthedoortomulti-mediaservicesDistributedarchitectureusingindustrystandards(ISUP+,MGCP,etc.),supportingvariousaccessgatewaysTDMCoreCoreDMSLinesDLCSPMTDMTrunkingVoiceAccessEndOfficePSTNUE9000SuccessionMG4000MG4000MG5000TDMSwitchUE9000MG4000PacketBackboneNetworkVoice,xDSL,PrivateLinesAccessMGCPMGCPGatewaySuccessionCallServerSuccessionNetworkManagerPSTNOtherAccessPassportUE9000S9/27/202357电信网络技术的发展RITT赵慧玲UE9000&DLCMG4000InternetISPNetworkWirelessNetworkPassportATM15000AnyVendor’sTDMSwitchIXCTandem/TransitOfficeMG5000PassportATM15000-SSuccessionNetworkFullyintegratedwithexistingservicecapabilitiesDirecthigh-speedcustomeraccessScalabilityandreliabilityIntegratedOAM&PFuture-proofnetworkPACKETBACKBONENETWORKVToAPOTS,ISDNxDSL,FTTCVoIPPrivateLinesWirelessBSCsCSNMxDSLAggregationDialAccessWirelessSwitchSuccessionNetworkManagerSuccessionCallServerSuccessionMulti-serviceGatewayAsynchronousTransferModeExistingcircuitswitchingCSNMMGATMMG5000MG4000MG4000MG4000