[Freeswitch-users] Voicemail hangups

I have a quite a few people that want to leave voice mails and they say they are being hung upon as if they were not recording a message, I think its usually from people that are quitter speakers, these are my settings in my voicemail file: <param name="record-silence-threshold" value="1"/> <param name="record-silence-hits" value="999"/> is there a way to set the params so the vm records event if there is almost total silence Thank you, George.