[Freeswitch-users] mod_avmd doesn't work on parked channels?

Hi! I'm trying to use mod_amvd to detect voicemail on a parked channel, but the beep is never detected. On the other hand, if I use mod_amvd on a bridged call it's always detected. Is mod_amvd usable on a parked channel? Thanks in advance and best regards. Fede