(2)双线路(Dual-line) 目录号码,一个语音端口对应两个通道,使用一个电话线路按钮(phone line button)可同时创建两个呼叫连接,可以有一个或两个电话号码(一个主的,一个次的)与其关联,实现呼叫转移,呼叫等待,电话会议功能。
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phone line button
电话线按钮
以上为机器翻译结果,长、整句建议使用 人工翻译 。
As long as a phone does not go "on-hook," activation of various line pushbuttons will automatically place the first line on hold without the use of a special "hold" button.
当电话机没有“接通”时,各种线路按钮激活自动将第一根线路置于保留状态,不需要使用特殊的“保留”按键。
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He was dying on the phone when he heard another mute button switch off and the voice of an even more senior executive came on the line.
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