电信行业网络技术的发展.ppt

5/24/20241电信网络技术的发展 RITT 赵慧玲5/24/20242电信网络技术的发展 RITT 赵慧玲图图1 1 我国电信网的构成我国电信网的构成 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5/24/20243电信网络技术的发展 RITT 赵慧玲Annual RevenueAnnual IncomeNote:Level 3 had high Extraordinary Revenues in 1998 that more than compensated the Loss on Ordinary Operations shown in this chartMCI Worldcom Revenue mixAT&T revenue mixAT&T revenue mix was the following in 1998:Business services:23,611 Million USD(or 44%of the revenue)Consumer services:22,885 Million USD(43%)Wireless services:5,406 Million USD(10%)Other services:1,321 Million USD(2%)AT&T is just starting to introduce Broadband&Internet Services in their reporting.These accounted for 3.4%of their revenues in the 1Q99.Voice:91-9292-9393-9494-9595-96Main telephones in service:+36%+51%+57%+49%+35%Data:Number of Internet hosts:-+277%+820%Number of PCs:-+37%+55%+44%+42%ConclusionThere is still a lot of growth in traditional voiceThe revenues largely come from the voice traffic Traffic volume growth of voice and dataThe China figures,as proposed by ITU5/24/20248电信网络技术的发展 RITT 赵慧玲Expected growth of Voice-over-IPBy 2002,VoIP is expected to be 10.8%of total voice traffic(national+international)(Internet+IP managed networks)For China the forecast is 1.2%in 2002;4.5%in 2005Traditional voice has to be supported for a lot ofTraditional voice has to be supported for a lot of years!years!Source:IDC/Link BCG analysisSource:OVUM Report123Segmentation of operatorsBased on the backbone protocolEstablished operators looking for very open multiservice networksFor data:use of ATM backbone to transport IP andFRFor voice:optimization of circuit networks(ATM backbone,voice over SDH,trunking of VoATM and VoIP in the existing network)Full support of existing services and introduction of new servicesNew telecom operators continuing ATM deployment,carrying IP,Voice and Frame RelayInternet service providers and new entrants asking for pure IP switching backboneATM and IP deployment in the backboneExisting voice networkintegration on ATMmigration to IPATMmigration to IPIP deployment132The choices of some US operatorsATM,ATM/IP or IPEstablished operators,focusing on ATM(multi-service networks)RBOCs(Ameritech,Bell Atlantic,Bell South,SBC Communications,US WEST),MCI,GTE,IXC,AT&T,(Sprint(ION):no voice yet)New entrants,focusing on ATM(delayed migrating to IP)Williams,QwestNew entrants focusing on pure IP backbones(managed IP networks)Level 3,Frontier,UUNet132宽带平台和接入的技术焦点宽带平台和接入的技术焦点IP over ATM/SDH/FIBER观点之一：观点之一：G交换路由器优化光纤网络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；新一代网络集话音、视频和数据为一体；带宽带宽“第一目标第一目标”，其它次要地位，提高竞争力，其它次要地位，提高竞争力；统一统一IP，不必顾及多业务，可解决不必顾及多业务，可解决QOS；避免避免ATM的复杂和开销，降低复杂性；的复杂和开销，降低复杂性；CIPOA、LANE在实时业务时不能保证在实时业务时不能保证QOS；成本降低几十倍；成本降低几十倍；利用利用HFC，STB和和Cable Modem是是IP产品产品适合城域网；适合城域网；电话业务的价格提供多媒体信息服务。电话业务的价格提供多媒体信息服务。5/24/202413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宽带平台和接入的技术焦点IP over ATM/SDH/FIBER观点之二：观点之二：ATMSDH完善的完善的QOS；业务的灵活性：业务的灵活性：IP、实时和其它业务；实时和其它业务；综合效益高；综合效益高；符合公网发展方向，在全球大量采用；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交换路由器仅适合纯IP骨干；骨干；新技术和新协议发展快、风险大，可局部试验；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。面临管理、工程、学术等不同问题。5/24/202414电信网络技术的发展 RITT 赵慧玲3、面临的可能挑战、面临的可能挑战（1）IP带来的技术挑战带来的技术挑战QOS，COS的提供策略的提供策略（IP-Qos、ATM-Qos）；）；标准的把握：标准的把握：CIPOA，MPLS，RSVP，Signaling等等；等等；Integrated Services，Differentiated Services；Multicast；xDSL引入策略引入策略（PVC、SVC、PPP、Cell/IP at desk等等）；等等）；技术试验的内容、范围、方式和步骤；技术试验的内容、范围、方式和步骤；宽带业务的引入策略。宽带业务的引入策略。5/24/202415电信网络技术的发展 RITT 赵慧玲3、面临的可能挑战、面临的可能挑战（2）业务挑战业务挑战宽带业务（近期的选择）：宽带业务（近期的选择）：接入：接入：xDSL/Cable Modem/Ethernet/ATM25;终端：终端：TV、PC;应用：应用：IP/Cell/WebTV（Web、Video、Multicast）；）；服务：管理性、可靠性。服务：管理性、可靠性。5/24/202416电信网络技术的发展 RITT 赵慧玲 新形势对电信网的要求新形势对电信网的要求(1)(1)1).1).目前的电信网是为电话设计的，正在改造以便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。传数据和图象。未来的趋势将主要按数据业务来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。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！对现有电路交换网的改造是不可避免的！(例子：例子：CiscoCisco总工的预言总工的预言)-象象WorldComWorldCom这样的少数新兴电信公司的网络数据这样的少数新兴电信公司的网络数据 业务量已超过电话，而象业务量已超过电话，而象AT&T,US SprintAT&T,US Sprint等传统电等传统电话公司的网络数据业务量也将在话公司的网络数据业务量也将在20052005年左右超过电年左右超过电话业务量话业务量5/24/202417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信网部门，加强数据通信特别是IPIP产品部门（例产品部门（例子：爱立信）子：爱立信）2 2).).TCP-IPTCP-IP将成为电信网的主导的上层通信语言将成为电信网的主导的上层通信语言3).3).必须保证网络端到端的服务质量（必须保证网络端到端的服务质量（QoSQoS），），为为此核心网部分必须引入此核心网部分必须引入SDH+ATMSDH+ATM并保证其可用性并保证其可用性与电话网相当。与电话网相当。4).4).电信网的大趋势是逐步实现分组化，无连接电信网的大趋势是逐步实现分组化，无连接化和全球寻址，最终形成一无缝的化和全球寻址，最终形成一无缝的IPIP网络结构！网络结构！新形势对电信网的要求新形势对电信网的要求(2)(2)5/24/202418电信网络技术的发展 RITT 赵慧玲5)5)必须暂时放弃端到端必须暂时放弃端到端ATMATM连接的理想，用户处将连接的理想，用户处将 以以太网以以太网/快速以太网和快速以太网和IPIP接入为主接入为主6)6)铜缆接入网必须改造，出路光纤铜缆接入网必须改造，出路光纤+无线无线7)7)为应付为应付IPIP及其他业务引起的巨大压力及其他业务引起的巨大压力,以以WDMWDM技技 术为代表的下一代大容量光网络建设势在必行，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，各种长途主干线上应开始应用新一代光纤，各种IPIP 业务的旁路技术也大有市场业务的旁路技术也大有市场8)8)对电信公司，实现电话和数据的融合是首要任对电信公司，实现电话和数据的融合是首要任 务务，下一步才是多媒体，三网融合是长远目标，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新形势对电信网的要求(3)(3)5/24/202419电信网络技术的发展 RITT 赵慧玲 下一代网络下一代网络New public network(NPN)新的公用网新的公用网Unified network 一体化网Continuously upgrable network 可持续发展的网络可持续发展的网络R/S5/24/202420电信网络技术的发展 RITT 赵慧玲Core Network Migration for IPPremium Service=Money-Making=Controlled QoSRegular Best Effort=Not Money-Making=Suppress InvestmentAccessNetworkAccessNetworkIP/ATM“Premium”Servicesw/Controlled QoSIP/SONET or WDM Regular Best-Effort ServicesIP Core Network5/24/202421电信网络技术的发展 RITT 赵慧玲可持续发展网络可持续发展网络的基本的基本要求要求可支持现有和将有的所有业务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具有巨大的可持续扩容的链路容量和节点容量量,因而物理层一定是以因而物理层一定是以WDM为基础，以为基础，以OADM与与OXC为节点的光传送网为节点的光传送网TCP-IPTCP-IP将成为主导的上层通信语言，将成为主导的上层通信语言，但不完但不完全排除其他通信协议，全排除其他通信协议，因而因而可同时支持现有可同时支持现有电路交换网，电路交换网，ATM网，以太网和宽带网，以太网和宽带IP网网具有很高的网络和业务生存性具有很高的网络和业务生存性最终将是以最终将是以IP为基础的无缝融合的网为基础的无缝融合的网5/24/202422电信网络技术的发展 RITT 赵慧玲电话网电话网网关网关数据核心网数据核心网 IP/ATM/SDH/Optical接入服务器接入服务器以数据为主的未来网络结构以数据为主的未来网络结构Internet大企事业居民接入服务器接入服务器RR ATM SW5/24/202423电信网络技术的发展 RITT 赵慧玲IP over OpticalIP over OpticalIP over SDHIP over SDHIP over ATMIP over ATM未来的未来的IP分层传送网分层传送网5/24/202424电信网络技术的发展 RITT 赵慧玲Multi-Services Data-Centric Network VisionPOTSISDNPSTNSignalingGatewayPOTSIPAccessServerxDSLResidentialGatewayOther BusinessMUXEdgeSwitchRADIUS ServersBilling ServersName ServersData VPNSessionManagersNetworkManagementService andBusinessManagementNetworkDatabasesPSTNFeaturesServersResourceServersNetwork and Service ManagementRASPOTSISDNPOTSISDNOC3xDSLRemoteAccessServerVoiceATMLANsNIUNIUFixed WirelessBusiness WirelessPacketCircuitGatewayFirewall.InternetPSTNSDH/OpticalCore Network IP/ATM/SDH/Optical5/24/202425电信网络技术的发展 RITT 赵慧玲7R/E ArchitectureAny VendorsTandem orLong DistanceOfficeVoice/Data/Video Multi-Service Packet NetworkSS7 NetworkSTPATM/IP Core NetworkATIXCEOFeatureServersMulti-MediaResourceServerOneLinkOAM&PManagerSCPPacketGatewaysAny VendorsEnd OfficePacketGatewaysFull Range ofNarrow&BroadBand Circuit&Packet AccessFull Range ofNarrow&BroadBand Circuit&Packet Access5/24/202426电信网络技术的发展 RITT 赵慧玲How packet networks can provide voice services that are competitive with circuit switched networks7R/E is.7R/E Multi-Service SolutionATIXCEOPacketGatewaysAny VendorsEnd OfficePacketGatewaysFull Range ofNarrow&Broadband Circuit&Packet AccessPacket NetworkFeatureServerOneLinkOAM&PManagerMulti-MediaResourceServerFull Range ofNarrow&Broadband Circuit&Packet Access5/24/202427电信网络技术的发展 RITT 赵慧玲7R/E is.7R/E Packet Local SolutionHow other vendors end-office switches can use lower cost packet transport and provide new IP/ATM based features&servicesPacket NetworkCircuit NetworkTrunkAccessGatewayLineAccessGatewayFeatureServerOneLinkOAM&PManagerMulti-MediaResourceServer5/24/202428电信网络技术的发展 RITT 赵慧玲Circuit Network7R/E is.How tomorrows tandems are built to virtually eliminate tandem congestion and exhaust7R/E Packet Tandem SolutionPacketGatewaysPacketGatewaysFeatureServer(s)OneLinkOAM&PManager)5/24/202429电信网络技术的发展 RITT 赵慧玲7R/E is.How the 5ESS is transformed into a 7R/E to achieve rapid feature creation and almost unlimited scaleability 7R/E Packet Driver(5ESS to 7R/E transformation)AMLineUnitsSM2000SMPTrunkUnitsPacketGatewaysOneLinkOAM&PManagerHub/BridgeorSwitch/RouterPacketGatewaysPacketGatewaysLineUnitsSM2000SMPTrunkUnitsLineUnitsSM2000SMPTrunkUnitsCM2FeatureServer(sMulti-MediaResourceServer5/24/202430电信网络技术的发展 RITT 赵慧玲7R/E is.How circuit and packet networks will off-load dial-up data traffic and offer remote access services7R/E Dial-up Data Solution(MultiServicesModule)Packet Networks(IP/FR/ATM)PublicInternet ISPInter-OfficeCircuit Networks MSMMSMMSMMSM5/24/202431电信网络技术的发展 RITT 赵慧玲Core Data Network TodayIP and non-IP traffic is carried over ATM/SDH coreConnections between routers are at sub-OC-3 ratesATM switches aggregate trafficOptical Line Systems are deployedl ll lIP/ATMATMSwitchATMSwitchATMSwitchATMSwitchRouterRouterRouterNon-IPData SourceNon-IPData SourceIPData SourceIPData SourceSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMOptical Line SystemNon-IPData Source5/24/202432电信网络技术的发展 RITT 赵慧玲Core Data Network TomorrowWhile network grows,routers and switches are addedRouters that are interconnected via OC-3 pipes or higher can use IP/SDH interfaces.ATM traffic aggregation at the edges of the network will continueATM switching and SDH XC integrated in one NEIP/SDHl lATMSwitchl lATMSwitchATMSwitchSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMRouterRouterRouterRouterRouterRouterSDHDCS/ADMIPData SourceIPData SourceIPData SourceATMSwitchSDHDCS/ADMRouterRouterNon-IPData SourceNon-IPData SourceATMSwitchRouterNon-IPData SourceSDHDCS/ADMOptical Line System5/24/202433电信网络技术的发展 RITT 赵慧玲Routers that are interconnected via OC-48 pipes or higher can use IP/WDM interfacesRouters perform the interworking function between IP/ATM,IP/SDH and IP/WDMCore Network-Beyondl ll lIP/WDMl lRouterRouterRouterRouterRouterRouterIP/SDHSDHDCS/ADMSDHDCS/ADMRouterRouterRouterRouterATMSwitchATMSwitchRouterRouterATMSwitchATMSwitchSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMSDHDCS/ADMRouterRouterRouterATMSwitchNon-IPData SourceIPData SourceIPData SourceIPData SourceNon-IPData SourceOptical XC/ADMOptical XC/ADMOptical Line SystemOptical Line System5/24/202434电信网络技术的发展 RITT 赵慧玲PSTNATMPSTNATMPSTN ExchangeATM ExchangeEWSD BroadbandNodeEWSD BroadbandNode-Changing Broadband Network Scenario5/24/202435电信网络技术的发展 RITT 赵慧玲Local Network with EWSD BroadbandNodeEWSD OAMincl.ATM and DSLATMPSTNSS7RemoteSiteRemoteSiteEWSDBroadbandNode 5/24/202436电信网络技术的发展 RITT 赵慧玲EWSD BroadbandNode-Embedding in Existing NetworksLegacyNodeorConcentratorLocal Exch.EWSDInnovation NodeEWSDInnovation NodeTrunk Exch.SDHPHDLUSDH/PDHRSU Remote Switching UnitDLU Digital Line UnitPHPacket HubFRFrame RelayBroadbandPSTN/ISDNRSUother ATM/FR networkMSP stand aloneATM switche.g.36170/36190BroadbandPSTN/ISDNDLUPHPH5/24/202437电信网络技术的发展 RITT 赵慧玲E-Cube NGS Adaptation to Hybrid SolutionAnalog/N-ISDNATM UNIProcessorProcessorIP/ATMIP/ATMMPLSLabelmappingSTMModuleIWUFETEX-150 E-CubeLAN5/24/202438电信网络技术的发展 RITT 赵慧玲E-Cube ATM Switch with MPLSMPLS ModuleLDP:Label Distribution ProtocolOSPF:Open Shortest Path FirstBGP-4:Border Gateway Protocol Ver.4BSGC:Broadband Signaling ControlPVC:Permanent Virtual ConnectionBCPR:Broadband Call ProcessorAPI:Application Program InterfaceFETEX-FETEX-150150 ATM UNILineLineLineAPIBCPRBSGCAPIRoutingProtocols IP data connectionLDP,BGP-4,OSPF signaling connectionRouting signaling(OSPF,BGP-4)termination(Management IP routing table)LDP termination(Label assignment:Management of IP address and Label(VPI,VCI)information)Order of connection set up via API ATM termination AAL termination Relay of API information API informationCommunication with MPLS module through API(Software)Connection setup Management of connection information Connection setupOSPF/BGP4/LDPVCI map SetupSetupOC-3SwitchOSPF,BGP-4,LDP5/24/202439电信网络技术的发展 RITT 赵慧玲E-Cube NGS Adaptation to ATM-centric SolutionFETEX-150 E-CubeAnalog/N-ISDNATM UNISTMModuleATMModuleProcessorIP/ATMIP/ATMIWUIPMLAN5/24/202440电信网络技术的发展 RITT 赵慧玲E-Cube Local SwitchL2TP(Access Concentrator)Allows subscribers to select ISPs Aggregates IP packet for the same destinationSTMATMResidentialPower UserSOHOG.LiteADSLHDSL/SDSLDSLAMISPISPInternetBackbonePOTSIP/ATMIP/ATMPOTSPOTSIP/ATME-Cube NGS Local SwitchL2TPDSLAM5/24/202441电信网络技术的发展 RITT 赵慧玲Telecom Network Migration 1Circuit SwitchesLegacy Voice STMLegacy Voice STM5/24/202442电信网络技术的发展 RITT 赵慧玲Telecom Network Migration 2ATM PlaneATM PlaneLegacy Voice STMLegacy Voice STMMobileMobileMSCBSC5/24/202443电信网络技术的发展 RITT 赵慧玲Telecom Network Migration 3IP/ATM w/MPLSIP/ATM w/MPLSLegacy VoiceLegacy VoiceMobileMobileMSCBSCISPATM VoiceATM VoiceTandemTandemIP Router NetIP Router Net5/24/202444电信网络技术的发展 RITT 赵慧玲Telecom Network Migration 4VoiceVoiceTandemTandemIP Core Layer#1IP Core Layer#1MPLSMPLSISPBSCMSC“Best Effort”“Quality”IPIP EdgeIP EdgeLayerLayer5/24/202445电信网络技术的发展 RITT 赵慧玲Telecom Network Migration 5VoiceVoiceTandemTandemIP CoreIP CoreLayer#1Layer#1MPLSMPLSISPBSCMSCIP EdgeIP EdgeLayerLayerAPIIntegratedAccess SWNetworkServer/Agent Clusters5/24/202446电信网络技术的发展 RITT 赵慧玲Alcatel 1000 S12Alcatels transition strategy S12 NarrowbandS12 NarrowbandHandles NB services(POTS and ISDN)RSUARCUDSNNB controlvoice(E1:2 Mb/s)voice(POTS/ISDN)1Alcatel 1000 S12Alcatels transition strategy S12 with MPSR and SDHS12 with MPSR and SDH linksNB services over BB transportAvailability:1998RSUARCUNB controlvoice(E1:2 Mb/s)VoSDHDSNvoice(STM-1 VC-12:155 Mb/s)voice(POTS/ISDN)MPSR2Alcatels transition strategy Only narrowband services,few ATM linksS12 with ATM links and NB/BB transport interworkingOffer integrated VoATM and VoIP depending on the position in the networkAlcatel 1000 S12RSUARCUVoIP and IP(AAL-5:155 Mb/s)VoIPRANNB controlvoice(E1:2 Mb/s)voice(POTS/ISDN)VoATM(AAL-1:155 Mb/s)InternetVoATMDSNmobile voice(AAL-2:155 Mb/s)3Alcatels transition strategy Broadband services and lot of ATM linksS12 with SDH links,ATM links and NB/BB interworkingOffer BB services,plus integrated VoATM and VoIP,depending on the position in the networkAvailability:2000Alcatel 1000 S12RSUARCUIP(ATM:155 Mb/s)DSNVoIPRANVoSDHNB controlvoice(E1:2 Mb/s)voice(STM-1:155 Mb/s)voice(POTS/ISDN)voice,data(ATM:155 Mb/s)MSANADSLInternetBB controlVoATMMPSRATM4Alcatel 1000 S12Alcatels transition strategy S12 in a Multi-Service networkS12 in a Multi-Service networkBSCA2G Access3G AccessSTM1/4NetworkServicesFeatures/Directory CAccessControlPSTNBISDNAnalogBRAATM 25 Mb/sor 10 Mb/s Ethernet NTMxDSL NTxDSLOther Servers(billing,etc.)Call ServerG3BSCIuMSANInternetIP routerATM services:-AAL1,AAL2,AAL5 -SVC,PVCDSNVoIPRANNB control BB controlVoATMVoSDHMPSR5SPRINT UNVEILSREVOLUTIONARY NETWORKHigh-Speed,High-Bandwidth,Multi-Function Capabilities Over Single Phone LineNEW YORK,June 2,1998-Sprint announced today a revolutionary new telecommunications capability that can provide homes and businesses with virtually unlimited bandwidth over a single existing telephone line for simultaneous voice,video calls and data services.Building the New WorldNew architecture for deploying voice,video,and data servicesMakes us of ATM,IP,and DSL technologiesSwitched voice servicesInternet,intranet,and extranet servicesBroadband to