Design And Implementation Of Telephone Conference System Based On Asterisk

With the rapid development of mobile communication and Internet, the major telecomoperators and increase the devotion and deployment of wirelessnetworks, wireless network bandwidth is growing more and more popular, mobileterminal, multimedia applications on mobile terminal has been widelydevelopment. Especially in PSTN, traditional telephone network services on the Internet isbecoming more and more common, systems of various audio and video has been inthe market that drives the development, not only in people cross regional exchanges, alsoplayed a major role in many industries. How in the wireless network environment, more andmore superior conditions, using mobile terminals, mobile features combined withthe telephone conference system will be a focus of this study.Through consulting relevant literature and technical books, there is a certain degree ofunderstanding on the telephone conference system model and related technologies. In thisprocess, the current development status of IPphone are analyzed and a prediction ofdevelopment trend; theory of VoIP and SIP protocol basic concepts, functionsand characteristics are described; in-depth study and development steps and methods ofAsterisk server platform;analysis of the model of main conference model system and theadvantages and disadvantages of the use of background. In a detailed analysis ofthedemand for conference call, the telephone conference system developed in Asteriskplatform, combined with Android application development experience,the realization of theSIP protocol telephone conference terminal control signaling and conference control andmanagement based on the core part,and then made the system functional testing. Finally, hiswork is summarizedand discussed the next step to improve the system needs to do the job.