[Serusers] Questoin about RAdius and INVITE.

Hello List. I'm using SER as my SIP platform, i'm still using it in a lab enviroment, i need to solve some issues before move it to a "normal" enviroment. What i want to do is make some changes in the authorization of a call. Now, when a INVITE arrives to my SER platform the user is challenged by radius in my DB. This is done by the : radius_proxy_authorize. For the other hand I'm able to return any parameter in the radius Access-Response message. So, here is my question: Is possible for SER to "understand" this access-response and the parameters that contains in it?. For example is possible to return in a radius access-response a parameter called "Redirect-Number" that changes the original dialed number by the user for another number?. In a diagram may look like this :(this is a very easy example) User dial 00-562-2408190 ----------- Challenged with Radius -------- Radius Return Parameter Redirect-Number=56-2-2204567 ---- The call is placed. Is possible to do this?. Do i have to use maybe a exec module or something like this? Any idea? Thanks in advace. Best Regards Ricardo Martinez.