Darren: Thanks for your quick answer. I was thinking in a similar solution, using a external program, in fact i use the exec_dset() functionality for something similar. I was thinking add to this solution a Redirect Server?. Maybe the call to the dynamic route proccess is in the Redirect Server, calling the exec_dset() function, so all the extra resource needed to perform these tasks are used in the redirect server and no in my Proxy-Registrar Server. Is just an idea.. IS this scalable maybe? Is this posible? Thanks in advance Best Regards, Ricardo Martinez.- -----Mensaje original----- De: Darren Nay [mailto:dnay@ionosphere.net] Enviado el: Lunes, 10 de Enero de 2005 11:06 Para: Ricardo Martinez; 'serusers(a)lists.iptel.org' Asunto: Re: [Serusers] Dynamic Routes with SER. Take a look in the SER Admin guide at "Executing an External Program". You can write an application with perl, C, etc.. Which will process the call info and return a destination set. This functionality is available using the exec_dset function in SERs exec module. I use this feature in our SER deployment and it works great. The only problem I've found so far is that it definitely does increases the resources required per call, and hurts your scalability. Especially if you use perl. Try to use C if at all possible, or persistent perl at the very least. Darren Nay On 1/10/05 11:01 AM, "Ricardo Martinez" <rmartinez(a)redvoiss.net> wrote: was