Hi all,<br><br>I was playing with asterisk .gsm sound file to work for callback.<br><br>But the quality is very poor and sound is very low so we cannot clearly hear what is sound played.<br><br>Is there any option in asterisk to increase the volume of the IVR files or any suggestion to get maximum quality of sound?<br><br><br>Thank You<br>Abdul<br><p> 
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