Asterisk audio file conversion
Using Sox
Converts 8kHz sln linear PCM 16 bit signed format into a wav file
/usr/bin/sox -t raw -r 8000 -e signed-integer -b 16 -c 1 recording.raw recording.wav
Using Asterisk
file convert recording.sln recording.wav
Only file formats that asterisk knows how to transcode can be converted with Asterisk. Sox supports more formats.