基于H.323的VoIP原理技术实现

With the development of the telephone invention until now, telephone business and the electric circuit exchange are the telecommunication primary service and the principle of work all the time. Along with the development of the computer and network, the multimedia communication in information network gets more attention of the world. The Internet huge success has already caused IP to become the mainstay of future information network technology, simultaneously network technology grouping and wireless cored as IP and mobile communication also become mainstream development direction of telecom network. Network Based on TCP/IP not only becomes the leading technology of the data domain indisputably, but also has already entered the telecommunication domain; obviously VoIP based on packet switching is substituting for circuit switch as the foundation of traditional telephone business gradually. Successful development and application of IP network telephone have indicated appearance of new generation of information network which based on IP.