title: "Do Not Disturb" feature in iOS 6 How to implement?
body: <p>I want  to implement the feature "DO Not Disturb" in iOS 6.</p>
  
  <p>First question : Is there any framework or api apple exposed to control them through the code?</p>
  
  <p>After lot of googling i found an application on the app store "Call Bliss" that provides this functionality and complete control over the calls, sms and mms.
  Can anybody explain how this application works?
  or
  any other work around to learn and implement this feature in iOS?</p>
  
  <p>Thanks in advance...</p>