[Serusers] serctl + authentication failures (update)

recently i had reported 2 problems. while waiting to hear from the list, i ran some experiments as follows: first, i switched from ser-0.9.0 to ser-0.8.14. i then re-initialized the ser database. afterwards, i was able to do a 'serctl add ..." successfuly. also, i'm now able to authenticate my registration requests. so both problems seem be gone ;-) i'd like to understand one thing better however: how does the information in subscriber database get to be used during the authentication process? stated in other words, which fields of the subscriber table get to be used during authentication? thanks & regards - ga