[Freeswitch-users] missing start audio at conference bridge

once the bridge is done, it missing audio until this log line happens 2011-01-19 13:53:32.364254 [DEBUG] sofia.c:4646 Channel sofia/external/user124@11.11.11.11 entering state [ready][200] after that the audio is coming. is there a way to send a ready 200 before answer or at the pre_answer ? Thanks