| In recent years,with the rise of mobile Internet and the popularization of Internet,especially with the rapid growth of Io T and 4G services,the Vo IP is increasingly mature and its application becomes widespread increasingly.The Soft-Switch System IP-PBX which is the combination of the traditional phone system and Vo IP technology has been widely paid sustained attention by the industry.As the base platform of the enterprise-class integrated communications,the development of Soft-Switch System has wide foreground of market and high using value.The core idea of Soft-Switch technology is separation of control functions from bearer and services.The entities connect and communicate with each other via the standard protocol.This will make the Soft-Switch technology not only can take full use of previously network resources,it also will be excellent and expansibility in specific applications.Therefore,the target of this paper is mainly focus on the specific application of the theory of Soft-Switch in multimedia communication system.With a comprehensive study on Soft-Switch and related technologies,the plan of Soft-Switch System based on SIP was designed first in this paper.Then,based on open source software Free SWITCH,its main functions include Pn P,call transfer,hot lines and call break in order to fit the specific requirements of the enterprise.Besides,the Service Management System is designed by means of managing console commands and Web administration interface to keep user friendliness and simplify the complexity of operation.Finally,with the chosen of the environment of software and hardware and server programming,the Soft-Switch System which has the function of audio-video communications and conference is implemented.Moreover,server test cases and test scenarios are designed has also been designed and also the system functions is analyzed and tested.In general,the test results confirm that each functional modules of the designed system can meet the design requirements very wel. |
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