How do I send all calls directly to voicemail

I need to see that answer.  Or how to control the number of rings at all

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@cathyjp7 wrote:

I have a rash of spam calls every 8 minutes with each coming from a different spoofed number. I want to send all calls directly to voicemail without ringing. How can I do this? The minimum number of rings on the drop down list in settings is 2.

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I myself just disconnect the phone line from the modem when I want to send everything directly to voicemail, or when I just don't want the phone to ring at all (eg. nap time!).