VoIP System Simulation Design and Implementation

This paper fusion many multimedia network and related technology, Set up a set of a complete VoIP system. Through the analysis of the Corporate computer networks and the telephone network, establish a VoIP network telephone system on the basis of existing LAN, realize the application of an enterprise Internet phone calls, to achieve the purpose to reduce call charges. Finally simulate with OPNET, the result shows that the VoIP network telephone system can normally run, realize the calling function.