电信网络技术的发展大趋势.pptx

电信传输研究所赵慧玲电信网络技术的发展3/1/20201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3/1/20202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--:RevenuemixAT&TrevenuemixAT&Trevenuemixwasthefollowingin1998:Businessservices:23,611MillionUSD(or44%oftherevenue)Consumerservices:22,885MillionUSD(43%)Wirelessservices:5,406MillionUSD(10%)Otherservices:1,321MillionUSD(2%)AT&TisjuststartingtointroduceBroadband&%: 91-92 92-93 93-94 94-95 95-96Maintelephonesinservice: +36% +51% +57% +49% +35%Data:hosts: - - - +277% +820%NumberofPCs: - +37% +55% +44% +42%efromthevoicetrafficTrafficvolumegrowthofvoiceanddataTheChinafigures,asproposedbyITU3/1/20208电信网络技术的发展RITT赵慧玲ExpectedgrowthofVoice-over-IPBy2002,%oftotalvoicetraffic(national+international)(+works)%in2002;%in2005Traditionalvoicehastobesupportedforalotofyears!Source:IDC/LinkBCGanalysisSource:OVUMReport123SegmentationofoperatorsworksFordata:otransportIPandFRForvoice:works(ATMbackbone,voiceoverSDH,work)operatorscontinuingATMdeployment,carryingIP,serviceprovidersandnewentrantsaskingforpureIPswitchingbackbone