Hello all, I've based my config on the one found at http://siprouter.onsip.org/doc/gettingstarted/ch10.html, coming up with the one found here http://209.213.8.4/openser.cfg (all the xlog's are so I can follow what's going on when I run openser in a non-forking mode). I'm trying to get a simple system working where clients behind nat'ing firewalls can both send and receive calls. Currently outbound calls work fine, with two way communication, but inbound calls only have one way communication, from the nat'd client to the pstn. If anyone could give me some pointers as to what's going wrong, I'd appreciate it. TIA, Aaron Seelye