卫星电话——通常是受灾后唯一能有效作业的——曾是设计拙劣、只能用来传送语音的装置。
Satellite phones—often the only ones working right after a disaster—used to be clunky contraptions that could only transmit speech.
本文主要介绍了一种新型的四线电话语音信箱的系统硬件设计和软件编制。
The hardware and software designs of a four-line telephone voice mail - box system are introduced in this paper.
电话：设计用来同时传送和接收语音的设备。
Telephone: Instrument designed for simultaneous transmission and reception of the human voice.
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