Fiber optics communications networks can carry digital signals, thus increasing communications speed and capacity.
光纤通信网络携带的是数字信号，因此提高了通信速度和容量。
The limited transmission rate available on the Public switched telephone network (PSTN) and on wireless networks presents a significant challenge to digital video communications.
这些应用对传输速率有限的公共交换电话网(PSTN网)和无线网络提出了重大挑战。
The limited transmission rate available on the Public switched telephone network (PSTN) and on wireless networks presents a significant challenge to digital video communications.
这些应用对传输速率有限的公共交换电话网(PSTN网)和无线网络提出了重大挑战。
应用推荐