ClearOne Converge Pro - Manual (Page 140)

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NC (Noise Cancellation) Tab
Select the Enable Noise Canceller checkbox to enable NC for the channel. Adjust the Cancellation Depth
slider to the dB setting which provides the best combination of low noise and maximum speech clarity. The
attenuation depth can be set in 1dB increments from 6dB to 15dB. The default is 6dB. The default for NC is off.
You can use noise cancellation on all types of input channels. See NC (Noise Cancellation) for more information.
Telco Settings Tab
Settings available on the Telco Settings Tab include:
Auto Answer: Set the number of rings before the unit connects an incoming call (or disable the function). The
default is Disabled.