[Serusers] How to use check_from function

[wangji]

Hi all,
    I add user using serctl like:

#serctl add 123456 pwd123456 123456 at iptel.org

But when I use check_from, it always return fail. And the from is like 123456 <sip:123456 at iptel.org>.
I wonder what need to be add in datebase and how to add it. 
Maybe I need add alias using "serctl alias add 123456 sip:123456 at iptel.org" ?


Jimmy