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第四代 IP多媒体通信技术日前被武汉大学成功攻克 ,从而使我国成为世界上少数几个全面掌握第四代 IP多媒体通信技术平台核心技术的国家之一。此前 ,基于电视广播技术交换、电路交换、分组交换的通信技术分别被称为第一代、第二代、第三代 ,第四代是基于网络的多媒体通信技术 ,?
The fourth generation of IP multimedia communications technology has been successfully overcome by Wuhan University so that China has become one of the few countries in the world to fully grasp the core technologies of the fourth generation IP multimedia communications technology platform. Previously, communication technologies based on the technology of TV broadcasting, circuit switching and packet switching were respectively referred to as the first generation, the second generation and the third generation, and the fourth generation was the network-based multimedia communication technology.