[Freeswitch-users] discriminate between session answered by users and voice mail automatic messages

Dear freeswitchers, is there a way to understand if a new session originated from a python handler has been actually answered by the remote user or by the operator voice mail with a message like "the customer you are trying to reach is not available at the moment" ? The python code looks something like the following: def handler(session, args): ## I do various things.... and than session_string = str("sofia/gateway/MY_GW/0039123456789”) new_session = freeswitch.Session(session_string) if new_session.ready(): # I get here also in case of automatic voice mail message else: # I supposed i’d get here in case of automatic “unreachable” messages… Thanks in advance Lorenzo