ERROR
2008-11-20 10:58:29 [WARNING] sofia_reg.c:1247 sofia_reg_parse_auth() can't find user [sipbxs00@sip.xxxxx.com.br]
You must define a domain called 'sip.xxxxx.com.br' in your directory and add a user with the id="sipbxs00" attribute
and you must configure your device to use the proper domain in it's authentication credentials.
thanks