[SR-Users] AWS binat external -> internal routing and record_route

Hi all! I have a question that arises in mailing list sometimes, but it is still not clear for me how to work with this. We have AWS instance with standard Amazon bi-nat, so basically communication with external hosts works with listen udp:ip:port advertise ip:port But in case when we need to send external call to internal network by internal ip addresses, we want to have internal host in record-route. As far as I understand, basic recommendation is to use separate port or internal address and select it with appropriate function. Maybe it is more theoretical question, but can we do something to generate correct record-routes and VIA for calls coming from external network to make their softswitches happy, and still maintain internal address in messages going to internal hosts, using single host and port on Kamailio behind nat? Thanks! -- Best regards, Dmitry Sytchev, IT Engineer