[Users] Sending Authorisation Credentials

I have user agents registering with OpenSER. I wanted to 'copy' the registration to an Asterisk server, so I modified a standard openser.cfg as such: if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("voip.com", "subscriber")) { www_challenge("voip.com", "0"); exit; }; save("location"); t_replicate("192.168.10.7","5060"); # Added this line... exit; }; I just stuck the t_replicate() call in there. OpenSER sends the REGISTER packet to the Asterisk box who requests credentials. How can I get OpenSER to send credentials (ie act as a UAC) for a given user, to a UAS? Thanks, Doug