1、,電信網(wǎng)絡(luò)技術(shù)的發(fā)展,為信息產(chǎn)業(yè)部研究發(fā)展策略，技術(shù)體制,規(guī)范和標準，測試和任證。為電信運營公司提供技術(shù)支持：進行設(shè)備選型和技術(shù)咨詢。例如：IN，SS7，ISDN，同步網(wǎng)，編號，SDH，WDM，接入網(wǎng)，幀中繼，多媒體，ATM，IP，IP電話，GSM，CDMA，高速訊呼和IMT2000。,電信傳輸研究所,圖1 我國電信網(wǎng)的構(gòu)成,業(yè)務(wù)網(wǎng),支撐網(wǎng),No.7信令網(wǎng),電信管理網(wǎng),傳送網(wǎng),話音平臺,智能網(wǎng),公共業(yè)務(wù)平臺,電子郵件/傳真 存儲轉(zhuǎn)發(fā)/EDI,語音信息臺,多媒體信息服務(wù)臺,Annual Revenue,Annual Income,Note: Level 3 had high Extraordin

2、ary Revenues in 1998 that more than compensated the Loss on Ordinary Operations shown in this chart,MCI Worldcom Revenue mix,AT 4.5% in 2005 Traditional voice has to be supported for a lot of years !,Source: IDC/Link BCG analysis,Source: OVUM Report,1,2,3,Segmentation of operatorsBased on the backbo

3、ne protocol,Established operators looking for very open multiservice networks For data: use of ATM backbone to transport IP andFR For 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 intro

4、duction of new services New telecom operators continuing ATM deployment, carrying IP, Voice and Frame Relay Internet service providers and new entrants asking for pure IP switching backbone,ATM and IP deployment in the backbone,Existing voice network,integration on ATM,migration to IP,ATM,migration

5、to IP,IP deployment,1,3,2,The choices of some US operatorsATM, ATM/IP or IP,Established operators, focusing on ATM (multi-service networks) RBOCs (Ameritech, Bell Atlantic, Bell South, SBC Communications, US WEST), MCI, GTE , IXC, AT 終端：TV、PC; 應用：IP/Cell/WebTV（Web、Video、Multicast）； 服務(wù)：管理性、可靠性。,新形勢對電

6、信網(wǎng)的要求(1),1).目前的電信網(wǎng)是為電話設(shè)計的，正在改造以便 傳數(shù)據(jù)和圖象。未來的趨勢將主要按數(shù)據(jù)業(yè)務(wù)來 設(shè)計網(wǎng)絡(luò)，但可用來傳電話，數(shù)據(jù)和圖象業(yè)務(wù)。 對現(xiàn)有電路交換網(wǎng)的改造是不可避免的！ (例子：Cisco總工的預言) - 象WorldCom這樣的少數(shù)新興電信公司的網(wǎng)絡(luò)數(shù)據(jù) 業(yè)務(wù)量已超過電話，而象AT&T,US Sprint等傳統(tǒng)電話公司的網(wǎng)絡(luò)數(shù)據(jù)業(yè)務(wù)量也將在2005年左右超過電話業(yè)務(wù)量,- 大型電信公司都在調(diào)整部署，削減傳統(tǒng)公用電信網(wǎng)部門，加強數(shù)據(jù)通信特別是IP產(chǎn)品部門（例子：愛立信） 2).TCP-IP將成為電信網(wǎng)的主導的上層通信語言 3).必須保證網(wǎng)絡(luò)端到端的服務(wù)質(zhì)量（QoS），為此

7、核心網(wǎng)部分必須引入SDH+ATM并保證其可用性與電話網(wǎng)相當。 4).電信網(wǎng)的大趨勢是逐步實現(xiàn)分組化，無連接 化和全球?qū)ぶ?，最終形成一無縫的IP網(wǎng)絡(luò)結(jié)構(gòu)！,新形勢對電信網(wǎng)的要求(2),5) 必須暫時放棄端到端ATM連接的理想，用戶處將 以以太網(wǎng)/快速以太網(wǎng)和IP接入為主 6) 銅纜接入網(wǎng)必須改造，出路光纖+無線 7) 為應付IP及其他業(yè)務(wù)引起的巨大壓力,以WDM技 術(shù)為代表的下一代大容量光網(wǎng)絡(luò)建設(shè)勢在必行， 長途主干線上應開始應用新一代光纖，各種IP 業(yè)務(wù)的旁路技術(shù)也大有市場 8) 對電信公司，實現(xiàn)電話和數(shù)據(jù)的融合是首要任 務(wù)，下一步才是多媒體，三網(wǎng)融合是長遠目標,新形勢對電信網(wǎng)的要求(3),下

8、一代網(wǎng)絡(luò),New public network (NPN)新的公用網(wǎng),Unified network 一體化網(wǎng),Continuously upgrable network 可持續(xù)發(fā)展的網(wǎng)絡(luò),R/S,Core Network Migration for IP,Premium Service= Money-Making= Controlled QoS,Regular Best Effort= Not Money-Making= Suppress Investment,IP/ATM “Premium” Services w/ Controlled QoS,IP/SONET or WDM Regula

9、r Best-Effort Services,IP Core Network,可持續(xù)發(fā)展網(wǎng)絡(luò)的基本要求,可支持現(xiàn)有和將有的所有業(yè)務(wù) 具有巨大的可持續(xù)擴容的鏈路容量和節(jié)點容量, 因而物理層一定是以WDM為基礎(chǔ)，以O(shè)ADM與OXC為節(jié)點的光傳送網(wǎng) TCP-IP將成為主導的上層通信語言， 但不完全排除其他通信協(xié)議，因而可同時支持現(xiàn)有電路交換網(wǎng)，ATM網(wǎng)，以太網(wǎng)和寬帶IP網(wǎng) 具有很高的網(wǎng)絡(luò)和業(yè)務(wù)生存性 最終將是以IP為基礎(chǔ)的無縫融合的網(wǎng),電話網(wǎng),網(wǎng)關(guān),數(shù)據(jù)核心網(wǎng) IP/ATM/SDH/Optical,接入服務(wù)器,以數(shù)據(jù)為主的未來網(wǎng)絡(luò)結(jié)構(gòu),Internet,大企事業(yè),居民,接入服務(wù)器,R,R,ATM S

10、W,IP over Optical,IP over SDH,IP over ATM,未來的IP分層傳送網(wǎng),Multi-Services Data-Centric Network Vision,PSTN Signaling Gateway,POTS,IP,Access Server,xDSL,Residential Gateway,Other,Business MUX,Edge Switch,RADIUS Servers Billing Servers Name Servers Data VPN,Session Managers,Network Management,Service and Bu

11、siness Management,Network Databases,PSTN Features Servers,Resource Servers,Network and Service Management,RAS,OC3,xDSL,Remote,Access Server,Voice ATM LANs,Fixed Wireless,Business Wireless,Packet Circuit Gateway,Firewall,.,7R/E Architecture,Any Vendors Tandem or Long Distance Office,Voice/Data/Video

12、Multi-Service Packet Network,SS7 Network,STP,ATM/IP Core Network,AT IXC,EO,SCP,Any Vendors End Office,Full Range of Narrow & BroadBand Circuit & Packet Access,Full Range of Narrow & BroadBand Circuit & Packet Access,How packet networks can provide voice services that are competitive with circuit swi

13、tched networks,7R/E is.,7R/E Multi-Service Solution,AT IXC,EO,Packet Gateways,Any Vendors End Office,Full Range of Narrow & Broadband Circuit & Packet Access,Packet Network,Full Range of Narrow & Broadband Circuit & Packet Access,7R/E is.,7R/E Packet Local Solution,How other vendors end-office switc

14、hes can use lower cost packet transport and provide new IP/ATM based features & services,Packet Network,Circuit Network,Trunk Access Gateway,Line Access Gateway,Circuit Network,7R/E is.,How tomorrows tandems are built to virtually eliminate tandem congestion and exhaust,7R/E Packet Tandem Solution,7

15、R/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),Hub/Bridge or Switch/Router,7R/E is.,How circuit and packet networks will off-load dial-up data traffic and offer remote access service

16、s,7R/E Dial-up Data Solution (MultiServicesModule),Packet Networks (IP/FR/ATM),Public Internet,ISP,Inter-Office Circuit Networks,Core Data Network Today,IP and non-IP traffic is carried over ATM/SDH core Connections between routers are at sub-OC-3 rates ATM switches aggregate traffic Optical Line Sy

17、stems are deployed,l,l,IP/ATM,ATM Switch,ATM Switch,ATM Switch,ATM Switch,Router,Router,Router,Non-IP Data Source,Non-IP Data Source,IP Data Source,IP Data Source,SDH DCS/ADM,SDH DCS/ADM,SDH DCS/ADM,Optical Line System,Non-IP Data Source,Core Data Network Tomorrow,While network grows, routers and sw

18、itches are added Routers that are interconnected via OC-3 pipes or higher can use IP/SDH interfaces. ATM traffic aggregation at the edges of the network will continue ATM switching and SDH XC integrated in one NE,IP/SDH,l,ATM Switch,l,ATM Switch,ATM Switch,SDH DCS/ADM,SDH DCS/ADM,SDH DCS/ADM,SDH DCS

19、/ADM,Router,Router,Router,Router,Router,Router,SDH DCS/ADM,IP Data Source,IP Data Source,IP Data Source,ATM Switch,SDH DCS/ADM,Router,Router,Non-IP Data Source,Non-IP Data Source,SDH DCS/ADM,Optical Line System,Routers that are interconnected via OC-48 pipes or higher can use IP/WDM interfaces Route

20、rs perform the interworking function between IP/ATM, IP/SDH and IP/WDM,Core Network - Beyond,l,l,IP/WDM,l,Router,Router,Router,Router,Router,Router,IP/SDH,SDH DCS/ADM,SDH DCS/ADM,Router,Router,Router,Router,ATM Switch,ATM Switch,Router,Router,ATM Switch,ATM Switch,SDH DCS/ADM,SDH DCS/ADM,SDH DCS/ADM

21、,SDH DCS/ADM,SDH DCS/ADM,SDH DCS/ADM,Router,Router,Router,ATM Switch,Non-IP Data Source,IP Data Source,IP Data Source,IP Data Source,Non-IP Data Source,Optical XC/ADM,Optical XC/ADM,Optical Line System,Optical Line System,PSTN,ATM,PSTN,ATM,PSTN Exchange,ATM Exchange,EWSD BroadbandNode,EWSD Broadband

22、Node -Changing Broadband Network Scenario,Local Network with EWSD BroadbandNode,EWSD OAMincl.ATM and DSL,RemoteSite,RemoteSite,EWSDBroadbandNode,EWSD BroadbandNode -Embedding in Existing Networks,Local Exch.,EWSD,Innovation Node,EWSD,Innovation Node,Trunk Exch.,SDH,DLU,SDH/PDH,RSU,Remote Switching U

23、nit,DLU,Digital Line Unit,PH,Packet Hub,FR,Frame Relay,Broadband,PSTN/ISDN,RSU,MSP stand alone,ATM switch,e.g. 36170/36190,Broadband,PSTN/ISDN,DLU,E-Cube NGS Adaptation to Hybrid Solution,Analog/ N-ISDN,ATM UNI,Processor,IP/ATM,IP/ATM,MPLS,Label mapping,STM Module,IWU,FETEX-150 E-Cube,LAN,E-Cube ATM

24、 Switch with MPLS,MPLS Module,LDP: Label Distribution Protocol OSPF: Open Shortest Path First BGP-4: Border Gateway Protocol Ver.4 BSGC: Broadband Signaling Control PVC: Permanent Virtual Connection BCPR: Broadband Call Processor API: Application Program Interface,FETEX-150,ATM UNI,Line,Line,Line,BS

25、GC,Routing Protocols,IP data connection,LDP,BGP-4,OSPF signaling connection,Routing 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 te

26、rmination Relay of API information,API information,Communication with MPLS module through API (Software) Connection setup Management of connection information,Connection setup,OSPF/BGP4/LDP,VCI map Setup,Setup,OC-3,Switch,OSPF, BGP-4, LDP,E-Cube NGS Adaptation to ATM-centric Solution,FETEX-150 E-Cub

27、e,Analog/ N-ISDN,ATM UNI,STM Module,ATM Module,Processor,IP/ATM,IP/ATM,IWU,IPM,LAN,E-Cube Local Switch,STM,ATM,Residential,Power User,SOHO,G.Lite,ADSL,HDSL/SDSL,DSLAM,ISP,ISP,Internet Backbone,POTS,IP/ATM,IP/ATM,POTS,POTS,IP/ATM,E-Cube NGS Local Switch,L2TP,DSLAM,Telecom Network Migration 1,Circuit

28、Switches,Legacy Voice STM,Telecom Network Migration 2,ATM Plane,Legacy Voice STM,Mobile,MSC,BSC,Telecom Network Migration 3,IP/ATM w/MPLS,Legacy Voice,Mobile,MSC,BSC,ISP,ATM Voice Tandem,IP Router Net,Telecom Network Migration 4,Voice Tandem,IP Core Layer #1,MPLS,ISP,BSC,MSC,“Best Effort”,“Quality”

29、IP,IP Edge Layer,Telecom Network Migration 5,Voice Tandem,IP Core Layer #1,MPLS,ISP,BSC,MSC,IP Edge Layer,API,Integrated Access SW,Network Server/Agent Clusters,Alcatel 1000 S12,Alcatels transition strategy S12 Narrowband,S12 Narrowband Handles NB services (POTS and ISDN),RSUARCU,DSN,NB control,voic

30、e (E1: 2 Mb/s),voice (POTS/ISDN),1,Alcatel 1000 S12,Alcatels transition strategy S12 with MPSR and SDH,S12 with MPSR and SDH links NB services over BB transport Availability: 1998,RSUARCU,NB control,voice (E1: 2 Mb/s),VoSDH,DSN,voice (STM-1 VC-12: 155 Mb/s),voice (POTS/ISDN),MPSR,2,Alcatels transiti

31、on strategy Only narrowband services, few ATM links,S12 with ATM links and NB/BB transport interworking Offer integrated VoATM and VoIP depending on the position in the network,Alcatel 1000 S12,RSUARCU,VoIP and IP(AAL-5: 155 Mb/s),VoIP,RAN,NB control,voice (E1: 2 Mb/s),voice (POTS/ISDN),VoATM (AAL-1

32、: 155 Mb/s),Internet,VoATM,DSN,mobile voice (AAL-2: 155 Mb/s),3,Alcatels transition strategy Broadband services and lot of ATM links,S12 with SDH links, ATM links and NB/BB interworking Offer BB services, plus integrated VoATM and VoIP, depending on the position in the network Availability: 2000,Alc

33、atel 1000 S12,RSUARCU,IP (ATM: 155 Mb/s),DSN,VoIP,RAN,VoSDH,NB control,voice (E1: 2 Mb/s),voice (STM-1: 155 Mb/s),voice (POTS/ISDN),voice, data (ATM: 155 Mb/s),MSAN,ADSL,Internet,BB control,VoATM,MPSR,ATM,4,Alcatel 1000 S12,Alcatels transition strategy S12 in a Multi-Service network,S12 in a Multi-S

34、ervice network,BSC,A,2G Access,3G Access,STM1/4,BISDN,Analog,BRA,ATM 25 Mb/s or 10 Mb/s Ethernet,NT,M,xDSL NT,xDSL,Call Server,G3BSC,Iu,MSAN,Internet,IP router,ATM services: - AAL1, AAL2, AAL5 - SVC, PVC,DSN,VoIP,RAN,NB control,BB control,VoATM,VoSDH,MPSR,5,Building the New World,New architecture fo

35、r deploying voice, video, and data services Makes us of ATM, IP, and DSL technologies Switched voice services Internet, intranet, and extranet services Broadband to the home and small business Fault tolerant High quality Flexible,Sprint ION Architecture,Sprint,POP,Sprint,POP,IP+ATM,Local Access,Tele

36、commuterSOHO,Residential,Remote Office, Branch Office,Internet Access,PSTN,Multi-Service Mux in CPE,Cisco,MGX,8800,Cisco,MGX,8800,DS1 and,NxDS1,Cisco,6xx,DS3/OC-3,Cisco,3810,Cisco,26/3600,CPE,DS1,Intra-City,ATM,LEC,POP,Internet,POP,POP,xDSL,DS1,xDSL,IP+ATM,Edge,Cisco,Router,IP+ATM Core,PSTN,GW,IP+AT

37、M Backbone,PSTN,Network,Multi-Services,Router,TGW, AGW,DGW,SGW, MGC, SEN,MSW,CSW,RC,Sprint ION Model,Succession Network - All Distance Network,TDM Switch,TDM Switch,TDM Switch,TDM Core,SPM,SPM,STM1,XA-Core,DMS,STM1,DS1,SPM,Tandem,SDM,Delivers key set of local and long distance services on a single p

38、latform Enables the integration of local and long distance service Enables a flatter network, significantly reducing complexity and reducing Cost of Ownership Opens the door to multi-media services Distributed architecture using industry standards (ISUP+, MGCP, etc.), supporting various access gatew

39、ays,TDM Core,Core,DMS,SPM,TDM Trunking,Voice Access,End Office,UE9000,UE9000 & DLC,MG 4000,Passport ATM 15000,Any Vendors TDM Switch,IXC Tandem / Transit Office,MG 5000,Passport ATM 15000-S,Succession Network,Fully integrated with existing service capabilities Direct high-speed customer access Scalability and reliability Integrated OAM&P Future-proof network,PACKET BACKBONE NETWORK,VToA,POTS, ISDN xDSL, FTTC VoIP Private Lines Wireless BSCs,CS,xDSL Aggregation Dial Access,Wireless Switch,MG 5000,MG 4000,MG 4000,MG 4000,UE 900