How can I set the ringtone for "unknown" callers to silent?

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Dec 17, 2012 8:47:33 PM

There is an app called : "Smart Sleep" by Nexoworks

It can make your phone silent and let the calls only from chosen contacts to ring.... Its not direct answer of what you need but its very flexible. You can also create schedules for weekdays and weekends separately... I am using it and its really a lifesaver. Especially in the night and in the meetings...