Hi everyone! I am probably missing something very basic, but I have problems with simple file record and playback in gsm file format. I have just installed 1.0 release system and I changed only default dialplan with following two extensions: <extension name="gsm_record"> <condition field="destination_number" expression="^9991$"> <action application="answer"/> <action application="record" data="/tmp/rec.gsm"/> </condition> </extension> <extension name="gsm_playback"> <condition field="destination_number" expression="^9992$"> <action application="answer"/> <action application="playback" data="/tmp/rec.gsm"/> </condition> </extension> When I place call to 9991extension I see INFO message about opening /tmp/rec.gsm, no error messages and when I hangup I can see that file /tmp/rec.gsm exists. However when I try to play this file using 9992 extension the only thing I can hear is noise. When I just change name to /tmp/rec.wav in both extensions everything is working fine. What am I missing? Many regards, Miroslav