[Serusers] How to proxy to PSTN

[mawali at news.icns.com]

Hi

I am trying to send all my calls to a PSTN gateway (asterisk with digium 
cards running on the same machine on 7060). I can use forward, but then I 
cannot use the solution SER provides me by using NAT helper. Consider the 
forwarding script:
     Â	if (uri=~"^sip:[8].*@")
                     {
                      forward(209.7.34.58,7060);
                 }

Here it works fine if I am calling from a public IP, but will not work if 
I am calling from a NATed client since this stateless forwarding will 
take SER out of the picture, and rtpproxy will not be used. I have also 
tried using t_relay_to_udp, but is is doing the same, the below lines are 
still not making SER to proxy the request.

                if (uri=~"^sip:[8].*@")
                {
                     t_relay_to_udp("209.7.34.58","7060");
                      break;
                }

What would be the best way of doing it. I want SER to act as a proxy 
(B2BUA?) between my caller and the PSTN asterisk server. I want to be able 
to use nathelper for this scenario.

Regards