[Serusers] Multiple SIP - PSTN Gateways

[Wasik, Paul]

Hi all,

Has anyone built a ser.cfg that can conditionally forward SIP calls to
different SIP - PSTN gateways based on the outgoing calls area or exchange
code. I'm sure it can be done but I'm not that good with syntax of the
ser.cfg file. I know how to route to single SIP GW based on the dialed
string but how do I make SER use multiple SIP gateways? Can anyone provide
an example of this? 

Thanks,

Paul