Quote Originally Posted by sr98user View Post
I think you are right. If you have to do port forwarding and forward the entire range, I assume you can't have two adapters behind your router. Also, there could be other applications that are using UDP ports in that range. PAP2 provides the fields for RTP port range. You could set the port range different for different adapters. Even with that port forwarding depends on the way your router translates the port numbers.
As Brandon mentioned the PAP2 RTP port range is used for outgoing calls only. So, I'm not sure if setting different ranges will affect incoming - incoming is up to the "media gateway" to pick a port from the 60K range. We don't know as to exact mechanics of how setup works - not sure how the incoming port is picked. Does each gateway pick a destination port using some internal algorithm (with no negotiation with your router) and start sending UDP packets to your public IP at that port?