[Serusers] Routing

[Gabriel Viganotti]

Hi!
I´m trying to make a dialing plan with ser. So i have configurated the 
ser.cfg in order to route for some especific destinations to other SIP 
proxies. But some of them need digest authentication and I need to do it on 
the ser. The scenario would be like this:

1- A sip client, which is registered in my ser proxy, tries to make a call 
to a destination that doesn´t belong to my network.
2- So ser should route this call to a third party proxy, which provides call 
termination (I have an account in this third party proxy).
3- When ser routes the call to that proxy, this response with challenge for 
authentication.

The question would be: How do I reply to that challenge with ser ? Is it 
posible to do this with ser ?

Thanks a lot !

Regards,

Gabriel