[Serusers] Using multiple aliases in SER

I was wondering what would be the correct way to assign multiple aliases to a subscriber in SER. The situation is that I have a domain (eg sip.ser.com) for the SER which I use for the PSTN number aliases to each subscriber. I have a group of users located under the same domain (eg home.ser.com) And now I would like to give each subscriber the opportunity to have 2 extensions for their phone. The first extension is obviously the users login, in this case 4 cyphers, and furthermore I would like to add another 4 cypher extension to that peticular user, and still keeping it inside the same domain (home.ser.com)! Is this possible and does it have something to do with me having to add an 'ALIAS="home.ser.com"' to the ser.cfg? I have it up and running with regular PSTN calls reaching the users, and they to being able to call out to the PSTN. And offcourse the users being able to call each other inside the same domain, without getting accounted. I simply just need to add another secondary alias to the users, and preferrebly keeping it inside the same domain (home.ser.com), and if that's not possible then atleast in a different domain from the one I use for PSTN numbers (sip.ser.com)! All and any help is greatly appreciated. Specs: Running SER 0.8.14 with MySQL database, and some boxes for the users (AudioCodes), and same for PSTN GWs. -- Med venlig hilsen / Kind Regards Martin Kjeldsen Cuatro-Group P/S (4G) Hindegade 3, DK-1303 København K Tel: (+45) 82 35 65 00 Fax: (+45) 82 35 65 65 Mob: (+45) 60 64 65 87 Url: http://www.cuatro.dk