會話初始化協(xié)議的研究與應(yīng)用.pdf

1、北京交通大學碩士學位論文會話初始化協(xié)議的研究與應(yīng)用姓名：賈子夏申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：朱剛20080601ABSTRACTABSTRACT：、聃mNGNtimesarrivalsInteracttendstoprovidemoremuchbetteraddedvalueservice，Intemetinterfacehasdevelopedforthesimplicityandisomerismplatform，

2、themajorpartofithasalladaptedtotext—basedcommunicationprotoc01Forexample，HTTP’SMTPProtoc01Undersuchbackground，theSIP(SessioninitialProtoc01)protocolhasappearedThisprotocolwhichissimilarwithHTTPandbroughtforwardbyIETF((In

3、ternetEngineeringTaskForce))，iseasytocommunicatewitheachothersSIPprotocoliseasytobeintegratedwithintemetenveromentTheSIPprotocolisanewagreement，whichhaspouredakindofnewpowerintoIntemet—basedVolPsystemTherefore，theSIPagre

4、ementandrelevanttechnologyresearchwhichhaveappliedmuchmorepopularatpresentarealsokindsofkeytechnologiesonfutureforanewVolPsystemrealizationSipprotocolbroughtforwardbyIETFisakindofcontrolprotocolofapplicationlayerSIPisuse

5、dtocreate，changeandterminateamultimediasessioninvolvedseveralterminationsSIPprotocolCanmakethecommunicationbetweentelecomapplicationandintemetapplicationgoingwellThegrammarofSIPprotocolisbasedonthegrammarofinternet，itpro

6、videsmultimediaapplicationbasedonIPprotocol，anditismostlyhopefulforfutureapplicationTherefore，thechoiceofpickingSIPprotocolassignalprotocoltodevelopmultimediasoftwareismoreandmorepopularAccordingtothelogicfunctionoftheap

7、plicationofSIPintheMultimediaconversationthesystemisconstitutedbyfourkindsofCommunicationelements，theUSeragent，theSIPproxyservertheredirectionserverandtheSIPregisterserver。TllisresearchworkAnalysiseachpartofSIPsystemresp

8、ectively，especiallytheSIPProtocol，theSessionDescriptionProtocol(SDP)，Real—timeTransportProtocol(RTP)anditsProcessesWefocusonhowtodesignaBSeragentbasedonOSIPandwhatisthefunctionofSIPprotocolanditsrelevanttechnologyTheUAIU

9、nsonWindowsandOSIPisitsbaselayerUndertheWhldowsenvironment，theSIPsourcecodes，basedOntheCProgram，arecompiledandarerunningsuccessfully11kresultshowsavoicecommunicationdemobased0nSIPProtoc01FinallythisresearchisbasedontheIP