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Pulse 属性包含用于指示调制解调器用于拨号使用的脉冲模式的命令字符串。在电话线不能做按钮拨号时必须使用脉冲拨号。例如： P。
The Pulse property contains the command string used to instruct the modem to use pulse mode for dialing. Pulse dialing is necessary for phone lines that are unable to handle tone dialing. Example: P.
它只激活一个按钮：按下f 1按钮，电话就开始拨号。
It activates only one button: Press the F1 button and the phone begins to dial.
WALT设计了输入笔以方便拨号及手写，除此之外最重要的功能也大面板上拥有按钮。
WALT featured a stylus for easy dialing and writing and also had buttons for the most important functions on front of the device.” (Ref)
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