Based On The H.323 Ip Telephony System And Achieve

The naissance and development of IP telephony offers a new way to shorten the distance among the people and foreshows the progress of the new-generation information network. Firstly, H.323 protocol梩he recommendation that describes how to provide multimedia communication services over Packet-Based Networks is introducesd in this article. The structure of protocol stack and the components of the H.323 system are mainly discussed. Now, H.323 protocol has become the leading standard of VoIP, because it measures up the technical requirements of IP telephony. In the following parts, the technical contents of IP telephony including audio-processing, communication-controlling .quality of service and the structure of the system are analyzed. There is an actual system described in this article. Its designing thoughts and partly implementations are presented. At last, an advanced system is put forward.