CMS need get the path of recording file from database ,the access to file server to get the recording .
So if there is no enough right for cms , cms will download fail .
we set the right of voice file in fileserver to everyone ,now can access to the folder /mnt/voice ,but still can't download the recording files.
use command :id cms in linux ,we get the gid is 100 ,but in voice shared folder of filer server , the setting is 65533.
after modify it to 100 ,the recording can be download .