Press and hold the Setup key to enter C1 mode to set the ringing time. The default is 20 seconds, and the unit is "seconds". Adjust the ringing time by adding and subtracting buttons, and the maximum setting is 59 seconds
Press and hold the Setup key to enter C1 mode to set the ringing time. The default is 20 seconds, and the unit is "seconds". Adjust the ringing time by adding and subtracting buttons, and the maximum setting is 59 seconds
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