[Users] uri module question

Hi! I have problems understanding the uri module. As far as I understand I can map aliases to subscribers - e.g. my main identity is klaus@mydomain, but I also want to use nickname@cooldomain in From: header with a single SIP account (single subscriber) Thus I can use uri_db module and uri table to check if klaus@mydomain is allowed to use nickname@cooldomain. Thus, what do I enter in the uri table? The definition is: id | username | domain | uri_user | last_modified ----+----------+--------+----------+--------------- In which column do I have to put which values? thanks klaus -- Klaus Darilion nic.at