Dynamix FXS-04 User Manual page 37

Ring>
The ring cadence, voltage and frequency were configured to the phone.
Frequency (10~70HZ): Specify the ringing frequency value
(default is 20HZ)
Ring on (0~8000ms): Specify the ringing on value (default
is 1000msec)
Ring off (0~8000ms): Specify the ringing off value (default
is 2000msec)
Ring level (10~95volt): Specify the ringing level (default is
94 volt)
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