Echo cancellation

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Hi everyone,


I'm newbie in PjSIP and I would like to set an echo cancellation algorithm as the lib provides some:
  PJMEDIA_ECHO_DEFAULT = 0, 
   PJMEDIA_ECHO_SPEEX = 1, 
   PJMEDIA_ECHO_SIMPLE = 2, 
   PJMEDIA_ECHO_ALGO_MASK = 15, 
   PJMEDIA_ECHO_NO_LOCK = 16, 
   PJMEDIA_ECHO_USE_SIMPLE_FIFO = 32


How can I set it in a simple manner? aectest.c looks like an example but i dont understand why it uses a wav file. I want to apply the echo cancellation during a call...


Thank you very much :)
 		 	   		  
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