Desktop Video Ip Telephony Conferencing Systems Design And Development

With the development of economy, civilization and society ,it is more and more frequently that people exchange information. The traditional equipment of communication, such as telephone, fax and so on, could hardly satisfy the requirement that people who are at different place to communicate face to face. So, depending on the abundant information content (video, audio and text), the Video Meeting System provides a convenient resolvent for holding a meeting at different place.Because the traditional terminal equipment of video communication is a thoroughly professional equipment, it is hard to use and maintain and has high cost in repairing , so it is very hard to popularize in public; however, it is in the moment of trying and exploring to develop the cheap and convenient Desktop Video Meeting System which bases on multimedia PC in domestic and overseas , which has many problem to be settled. The "Desktop Visual Meeting System over IP" designed in this essay is a kind of Desktop Video Meeting System which bases on internet and uses multimedia PC as the terminal equipment of video communication. Firstly ,using the standard of H.323. this essay designed the flow of systemic model meeting , the mode of dialog protocol and the software module including meeting terminal . MCU and so on. The next , this system was realized according this design. Finally , the system obtained good effect in the course of lab debugging and running.