title: BackgroundDetect() application in Asterisk
body: <p>I'm learning Asterisk. In that I started to learn about BackgroundDetect() application.</p>
  
  <p>There are three options are there.</p>
  
  <p>BackgroundDetect(filename[|sil][|min|max]])</p>
  
  <p>sil - If we specified 1000 in sil option,it'll wait 1 second after we say something to phone.</p>
  
  <p>I worked sil option,it was working fine.</p>
  
  <p>But I didn't understand what is the use of min and max options.</p>
  
  <p>Can anyone explain me, purpose of min and max with an example? </p>
  
  <p>Thanks in Advance.</p>