hi guys, as you know on freeswitch the codec G729 only use fro pass through, so we couldn't play .wav file using codec G729, so i have installed asterisk to everytime i want to play file with that codec play them on asterisk using gateway on freeswitch , but in asterisk when i issue the command (exten => 999,1,playback(hello-world)) the file play successfully using freeswitch that is connect to asterisk but i don't want to answer channel at this situation so issue the command (exten => 999,1,playback(hello-world,noanswer) or (exten => 999,1,background(hello-world,n) -- n used to don't answer channel )) i don't hear the sound of .wav file on the debug of sip on asterisk the file is played and command was executed but i coudn't hear sound notice:because of using nibble_account on freeswitch i don't want to answer channel to reduce the cash plz help thanks