电传打字电报：国际性的直拨电话通信设施，它用电传打字机为终端机，以每秒50数元，传送波德代码，即每分钟600字。
Telex: An international dial-up communications service that uses teleprinters for terminals and transmits Baudot code at 50bits per second, or 600 words per minute.
用电话线传送数字讯号并再现文件的装置。
Device for the transmission and reproduction of documents by digitized signals sent over telephone lines.
由于生理信号的超低频分量相当丰富，利用电话网络无法直接传送。
Physiological signals can't be transmitted through telephone networks because they are full of ultra low frequency components.
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