[Serusers] Get alias for user

Hello, I plan to deploy a service based on SER and I'm facing a simple problem. All users have both a username (e.g. sip:dsandras AT_ gnomemeeting.net) and one alias (e.g. sip:600001 AT_ gnomemeeting.net). I have another service running in back-end that only supports numerical SIP addresses. So I would like to use "rewriteuri" in ser.cfg to rewrite the user part of the SIP URL. The problem is that I want to rewrite the original username (dsandras) into its numerical alias (600001). My question is thus: how can I get the numerical alias from a username in ser.cfg in order to use it? Thank you, -- _ Damien Sandras (o- GnomeMeeting: http://www.gnomemeeting.org/ //\ FOSDEM 2005 : http://www.fosdem.org v_/_ H.323 phone : callto:ils.seconix.com/dsandras@seconix.com