Voice transmission quality 话音传输质量
digital voice transmission 数字语音传输
Wireless voice transmission 无线语音传输
voice transmission technique 语音传输技术
encrypted voice transmission 密话传输
Voice transmission technology 语音传输技术
Voice Transmission over IP 网络语音传输
two-way voice transmission 双向语音传递
The origin of IP telephone goes back to the development of IP network and the voice transmission experiments with package networks.
IP分组网的迅猛发展，以及在分组网上语音传输的试验性进展，都促成了IP电话的产生。
参考来源 - 基于SIP的IP电话的实验性研究After the system design, the software test consists of video transmission, voice transmission, text transmission, and file transmission.
在进行系统设计后,ICT远程诊断系统的测试,主要是从4个方面,文件传输,文字聊天,语音传输和视频传输。
参考来源 - 基于Internet的ICT远程诊断通信系统·2,447,543篇论文数据，部分数据来源于NoteExpress
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