| With the progress of society and development of industry, people have advanced more and more demand for communication. Especially the need of people on communication is converted to multimedia communication because of the fast improvement of the network. IP-Based video conference system is promised .to be a trend of future multimedia application. Multimedia Control Unit (MCU) is an important equipment in such systems. It acts as control, management and process of multi-conference. Its performance directly influences the quality of the video conference. But so far, there isn't an open and special method to test the performance of MCU in this field. According to this problem, this paper discusses and puts forward a new scheme that can test the performance of MCU efficiently.Because the performance of MCU is influenced by many factors and is difficult to test applying to conventional method, a new scheme is designed in this paper. We design and develop an analog caller device that analog many true terminal to test performance of MCU. The emphasis is put on the design the analog caller device's structure, and every module function has been described, and testing detailed steps are introduced.In the first chapter the concept, the development, the standard of video conference and my task are introduced. In the second chapter I will concisely state the compose and H.323 protocol of video conference. Then the implement of MCU is introduced in Chapter3. Chapter4 and Chapter5 depict the scheme and the implement of the caller. At last, some advices are proposed to give direction to the following work.The analog caller device in this scheme to test the performance of MCU has passed the test in experiment environment. Practice has proved the feasibility and correctness of the scheme. This scheme is not only simple and feasible, but consumes less money and fewer resources, so this scheme has high practicability.
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