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成都理工大学工程技术学院毕业论文基于IP的语音通信作者姓名：李杰专业名称：电子信息科学与技术指导教师：柳军讲师基于IP的语音通信-I-摘要进入21世纪以来，因特网得到了飞速的发展并且迅速的普及和应用，随着3G时代的到来和现代网络技术的迅猛发展，传统的PSTN(公共交换电话网络)上的语音业务将逐步迁移到IP网络上。同时，随着IP技术框架中汇聚网络研究的发展和IP语音技术的提出，VoIP技术为基于IP网络的语音通信提供了强大而有效的手段，以该技术为基础的语音通信必将成为下一代网络应用的发展方向之一。VoIP是一种以IP电话为主并推出相应的增值业务的技术。该技术是以IP技术的分组化、数字化传输技术为基础。VoIP的技术的出现不仅使得人们日常所使用的一些简单的通话服务具备了灵活性以及智能性，而且由于IP网络可以快速灵活地引入新的比较复杂的业务，使得运营商会相对容易的切入电信业务。这也必将导致利用IP网络实现包括移动电话、家庭电话、寻呼和邮件等业务的用户迅速增加。并且VoIP允许一些新的通信方式，能够提供多媒体的内容满足用户的需求也是一大趋势，这些都将成为推动VoIP发展的最终决定因素。本文研究了IP语音通信技术基本概念和原理，并对常用的通信协议做了较详细的介绍，在此基础上透过近几年主流IP语音通信技术的发展趋势，提出了解决IP语音通信的一些关键技术。最后论文在整合一系列技术的基础上通过wifi实现了在两台笔记本上的IP语音交流测试，并取得了较好效果。关键词：UDP语音通信数字化技术基于IP的语音通信-II-AbstractInthe21century,theInternethavedevelopedrapidlyandrapidpopularizationandapplication,withthearrivaloftheeraof3Gandtherapiddevelopmentofmodernnetworktechnology,thetraditionalPSTN(publicswitchedtelephonenetwork)ofvoicebusinesswillgraduallymovetoIPnetwork.Atthesametime,alongwiththeIPtechnologyinnetworkconvergenceframeworkofthedevelopmentoftheresearchandIPvoicetechnologyputsforward,VoIPtechnologybasedonIPnetworkforthevoicecommunicationprovidesapowerfulandeffectivemeans,tothetechnologyasthefoundationofvoicecommunicationwillbecomethenextgenerationnetworkapplicationdevelopmentdirectionof.VoIPisaIPtelephoneprimarilyandlaunchthecorrespondingvalue-addedbusinesstechnology.ThistechnologyisthegroupingofIPtechnology,digitaltransmissionoftechnologyasthefoundation.VoIPtechnologynotonlymakespeopledailyintheuseofsomesimplecallservicehavetheflexibilityandintelligent,andbecausetheIPnetworkcanquicklyflexibilitytotheintroductionofnewcomplexbusiness,makingoperationchamberofcommerceisrelativelyeasytocutintothetelecomsbusiness.ThiswillleadtouseofIPnetworkrealizationincludingmobilephones,homephone,pagingandmailbusinessusersincreasequickly.AndVoIPallowssomenewcommunicationmode,canprovidethemultimediacontenttomeetthedemandofuserisalsoabigtrend,whichwillbecometheimpetusofthedevelopmentoftheVoIPfinallydecidedtofactors.ThispaperstudiestheIPvoicecommunicationstechnologybasicconceptandprinciple,andtocommonlyusedcommunicationprotocoltodoamoredetailedpresentation,basedonthisthroughthemainstreamIPvoicecommunicationstechnologyinrecentyearsthedevelopmenttrend,andputsforwardsomesolutionstoIPvoicecommunicationofsomekeytechnology.基于IP的语音通信-III-ThelastinaseriesoftechnologyintegrationpaperbasedonwifiisrealizedbytwolaptoponIPvoicecommunicationtest,andachievedgoodresults.Keywords:UDP,VoiceCommunication,DigtalTechnology基于IP的语音通信-IV-目录摘要............................................................................................................IAbstract..................................................................................................II目录.........................................................................................................IV前言...........................................................................................................11IP语音通信技术设计概述..................................................................21.1IP语音通信的发展历史..............................................................21.1.1目前国内外IP语音的研究概况...........................................21.1.2IP语音技术的发展趋势........................................................31.2IP语音技术的市场前景..............................................................41.3IP语音通信的未来......................................................................52VisualC++网络编程技术分析.............................................................72.1MFC开发技术.............................................................................72.1.1MFC特点...............................................................................72.1.2MFC的优势...........................................................................82.1.3MFC的文档视图的概念.......................................................82.2网络编程技术..............................................................................92.2.1套接字技术简介...................................................................92.2.2套接字通信过程...................................................................92.3多线程编程技术........................................................................102.3.1多线程技术..........................................................................102.3.2WIN32环境下多线程编程技术.........................................112.3.3MFC环境下多线程编程技术.............................................122.3.4线程同步技术......................................................................123IP语音通信开发协议及需求分析....................................................143.1IP协议........................................................................................143.1.1IP协议简介..........................................................................14基于IP的语音通信-V-3.1.2IP协议基本原理..................................................................143.1.3IP地址..................................................................................153.2UDP协议...................................................................................153.3需求分析.....................................