VOIP在NGN核心網(wǎng)中的應(yīng)用.pdf

1、Y1406681中山大學(xué)碩士學(xué)位論文VOIP在NGN核心網(wǎng)中的應(yīng)用TheapplicationsofVOIPtechnologyinthecorenetworkofNGN學(xué)位申請(qǐng)人：葉茵導(dǎo)師姓名及職稱：梁凡副教授專業(yè)名稱：電子與通信工程研究方向：移動(dòng)軟交換答辯委員會(huì)主席：委員：籃叁盤2008年lO月Title：TheapplicationofVOIPtechnologyinthecorenetworkofNGNMajor：Electro

2、nicandCommunicationEngineeringName：YinYeSuperVisor：ProfessorLiangFanNextGenerationNetwork(NGN)isbasedontheconceptthatonenetworktransportsallinformationandservicesthroughencapsulatingtheseintopackets，NGNiscapableofprovidi

3、ngvoice，data，andallsortsofmediasuchasvideo，Therefore，theNGNarecalledasMulti—ServicesIntegratedNetworkNGNhasrealizedtheseparationsbetweenserviceandthecontrol，theseparationbetweencontrolandthebearer，theseparationbetweenbea

4、rerandaccessFurthermore，NGNformsfullyopeninghierarchicalarchitectureSoftswitchprovidescallcontrolandaccesscontrolofrealtimeserviceItisthecoreofNGN’Scallandcontr01alsoissignificanttobeutilizedSoftswitchoccupyakeypointinbo

5、thCoretechnologyofNGNthatcontainstwoaspects，theoneiSbearnetwork，andtheotheroneiSservicenetworkFurthermore，oneofthemostimportantdevicesinNGNissoftswitchwhencomestovoiceapplicationsSoftswitchbasedVOIPwillbeNGN’Smainsevicei

6、nfutureVOIP(VoiceOverInternetProtoc01)isapacketizedanddigitalizedtechniquethatbasedonIPtechnology，itsbasicideaareillustratedasfollow：Itcompresscodingspeechwithspeechcompressionalgorithm，thenpacketthesedatawithprotocolssu

7、chasIP，furthermore，transmitthesethroughIPnetworktothereceiver：eventually，VOIPdecodesthesespeechdata，recoverytheseintooriginalspeechsignal。IPtelecommunicationsystemstransferanaloguesignalintraditionaltelecommunicationnetw

8、orkintoIPpacketswhicharecapableofbeingusedininternetMeanwhile，IPtelecommunicationsystemsalsotransferthereceivedIPpacketsintospeechasanaloguesignalFirstly，thisthesisintroducescriticaltechnologyandNetworkingstructureofVOIP

9、briefly，discusseditsdevelopmentanditsapplicationsoncontemporarynetworkAfterthat，thethesiSmainlyfocusedonGMCC’SVOIPexperimentalproject’Sreformationprocessanditseffecttest，besides，thethesisalsoundergosometheoreticalanalysi

10、s，whichcanbedividedintothesepart：Reformhardwareandsoftwareofsoftswitchequipments’loadbearingfunctions：startIPbeartrafficfunction：Evaluatetheeffectofreformationanditsriskassessmentwithinproject，aswel1asitsCountermeasuresK