但问题是，用永久虚拟电路(PVC)建立起来的帧环境中的话音通信的性能价格比不如用交换虚拟电路(SVC)建立起来的帧网络。
However, the concern is that voice traffic in frame environments built with permanent virtual circuits (PVC) will not be as cost-effective as frame nets built with switched virtual circuits (SVC).
介绍了一种针对短距离通信的、半双工、低功耗无线话音通信器的实现方案。从硬件电路和软件设计进行了阐述。
A wireless digital semi-duplex low power voice transceiver for short-distance communication is introduced in terms of the design of its hardware and software.
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