[Serusers] sipsak, notify, sipura ata

hi, i know this might be the wrong list for that question, but i know there are many good people in here using ser and sipura atas. i am trying to send a NOTIFY message to a sipura ata, containing a resync request. i do this via sipsak and a textfile containing the NOTIFY message with an event of resync;tftp ... blah. i then get, as mentioned on sipura website a 401 unauthorized challenge back from the box. now i am supposed to send account password computed with md5. questions: which account password? the one for the account configured on the box? or the admin password of the box? and how do i send that to the box after the challenge arrived? don't i have to set the correct message-ids and stuff? does someone have a working example of messages and commands to get a sipura nbox to resync its profile? any help would be appreciated. Brgds, Gerd