答：是在互联网上传输的一种语音通话技术，现在网络上流行的通过下载一个软件，在电脑上直接拨号，用耳机接听打电话，就是网络电话！
Answer: on the Internet is a kind of transmission of voice calls, now popular network technology by downloading a software, computer, use headphones on direct dialing the telephone call, network!
DTMF是一种可靠而成熟的通信技术，由于它可以提供更高的拨号速率，迅速取代了传统转盘式电话机使用的拨号脉冲信号。
DTMF is a reliable and mature technology. Because it can provide the higher dialing speed, it has rapidly replaced the dial pulsing signal which the traditional dial telephone used.
在滤波部分，高组滤波和拨号音频滤波等使用了开关电容技术。
The filter section uses switched capacitor techniques for high-and low-group filters and dial-tone rejection.
广东省中山市气象局引进中国移动通信公司的GRPS无线业务通讯技术，取代常规电话拨号方式，用于完成中尺度灾害性天气监测网中22个自动气象站观测资料的采集和传输。
The China Mobile GRPS wireless communication technology was adopted instead of the routine telephone dial mode in the collection and transmission of observation data of 22 automatic weather stations.
服务器使用数据库技术管理数据，铁路各应用部门可在终端上通过专线或拨号线路随时查询数据。
The server stores and sorts all data on database. Any department of railway administration can browse data anytime on the terminal by dialup or leased line to server.
方案中应用了帧中继技术、以太网技术以及VLAN技术等，为拨号用户提供了可靠性高、通信速度快和具有良好扩展能力的接入服务。
In this project, the Frame Relay, Ethernet and VLAN technologies are used, which provide the dialing users with high reliability, speedy communication and great expanding access services.
文章介绍了一种基于DSP技术的电视机语音拨号遥控器。
The article introduces that how to realize the multifunctional speech dialing distant - controller of TV set based on DSP.
文章介绍了一种基于DSP技术的电视机语音拨号遥控器。
The article introduces that how to realize the multifunctional speech dialing distant - controller of TV set based on DSP.
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