.. to add some more data on my own question ...
I logged on on the freeswitch CLI when I am about to leave the voice mail.
I can see the record app being kicked out with the filename and then 300
500 10 as params passed to the record app
-- snip --
Command Execute
record(/var/sipxdata/media
Hello list,
I have the following issue with the voicemail: every now and then, when
somebody soft spoken leaves a voice mail they get interrupted by the
silence detection threshold and unfortunately they don’t bother to
re-record and speak louder instead they hang up. If there where for me I
