The incoming 3g could not only support the existing mobile operations, but also broad band video operations high quality voice packet data transmission and real time video communication.
呼之欲出的第三代(3 G)移动通信不仅能提供现有的各种移动电话业务，还能提供高速率的宽带视频业务，支持高质量的话音、分组数据业务以及实时的视频传输。
In this article we design and implement a secure and real-time voice transmission system.
本文设计和实现了一个安全、实时的语音信息传输系统。
Simulation result shows that the protocol is suitable for real-time voice communications and the performance for data transmission has no significant degradation.
模拟结果表明，该协议能满足话音的实时要求，性能良好，且数据传输性能没有明显下降。
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