资源描述：
《核心网中不同语音编码的传送以及带宽计算(客服系统呼叫中心参考).ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、VoIPBandwidthCalculationofFEInterfaceNBUPRTPUDPIPEthernet4byte12bytes8bytes20bytes26bytesCodectypePackageintervalNetvoiceVoicecodecspeedG.71120ms160bytes64kbpsG.72920ms20bytes8kbpsAMR12.220ms31bytes12.2kbpsInformationofG.711,G.729andAMRG.711：(160+4+26+20+8+12)*8/0.02=92
2、.00kbpsG.729：(20+4+26+20+8+12)*8/0.02=36.00kbpsAMR12.2:(31+4+26+20+8+12)*8/0.02=40.40kbpsIfcombinedwithVADabout50%bandwidthwillbesavedBandwidthcalculationbasingonFEinterfaceTransmissionmodelbasingonFEportsVoIPBandwidthCalculationofPOSInterfaceCodectypePackageintervalNet
3、voiceVoicecodecspeedG.71120ms160bytes64kbpsG.72920ms20bytes8kbpsAMR12.220ms31bytes12.2kbpsInformationofG.711,G.729andAMRG.711：(160+4+12+8+20+9)*8/0.02=85.20kbpsG.729：(20+4+12+8+20+9)*8/0.02=29.20kbpsAMR12.2:(31+4+12+8+20+9)*8/0.02=33.60kbpsIfcombinedwithVADabout50%bandw
4、idthwillbesavedBandwidthcalculationbasingonPOSinterfaceTransmissionmodelbasingonPOSportsNBUPRTPUDPIPPPP4bytes12bytes8bytes20bytes9bytesVOIPSolutionforG/TMSCBeijingXi’anGuangzhouShenyangShanghaiWuhanChenduNanjingTraditionalsolutionforG/TMSCHuaweiSoftswitchVOIPsolutionfor
5、G/TMSCEachvoicechanneloccupy64Kbps.CombinedwithVADandG.711/G.729dynamicconversion,basingonPOSandFEinterface,inaverageonecalloccupies27.0Kbps.Usingtraditionsolutionitwillneed94,815E1.AccordingtoHuaweiSoftswitchMSC,thetotal40,000E1havebeenused.InChina,therentchargeforoneE
6、1areapproximately2000RMBpermonthforintra-provincetransmission,and15000RMBpermonthforinter-provincetransmission.VOIPsolutioncanhelpCMCCsave:（94,815E1－40,000E1）*15,000＝822,225,000RMB（99,422,612USD）permonth,99,422,612USD*12=1,193,071,344USDperyear.TraditionalSolutionforVMS
7、CBasicTrafficmodel:IftheBSCsupport100Kmobilesubscribers,acordingtoerltableitwillneed2526E(82E1),sointraditionalsolutionitwillneed130E1forlongdistancetransmission:PSTN-MSC:2526*30%+2526*30%=1516E(48E1)BSC-MSC:2526E(82E1)BSCMSCSmallcityLargecityPSTNBSCPSTNTraditionalsolut
8、ionforVMSC30%MSToPSTN30%PSTNToMS40%MS-MS80%Localtermination0.025erl/subs,Averageholdingtime:60sGOS:0.01LocalCa
