[asterisk-dev] Tone Detection

[David P]

   Hello,
   
  
  I need to listen for single/mono tones of different frequencies. For example, a 900Hz tone. I have been looking hard for examples of how to do this but have came up short.
  
  I really want an application like "WaitForSilence", except "WaitForTone(hz/length, timeout).
   
  
  Can anyone suggest an application to look at or, if not, suggest a way to do this?
   
  
  Thank you,
   
  
  David 

		
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