[Serusers] multiple domains in Ser

Hi, Is there a way to coexist multiple domains in Ser, distinguishing users even if they have the same username in subscriber table but different domains? I'll explain better, I have subscriber table with: | username | domain | e-mail | ------------------------------------------------ | user_A | domain_A | user_A@domain_A | ------------------------------------------------ | user_A | domain_B | user_A@domain_B | and in domain table there are both domains domain_A and domain_B. But when someone calls user_A, (with or without writing their domain), both phones ring (if both users have their phones registered), when I want only one to ring because they are different users!! Is there a way in Ser to do this right? Regards, Ricardo.