Hello, I've been beating my brains out for a while with this problem, I think I might need some help. I've been trying to set it up as a trimmed down to the max carrier grade SIP PBX. Here's my setup I'm using a amazon ec2 64 bit image with a public static IP for the host. (Inside a NAT) ports opened from the outside are TCP 5060 UDP 16384 - 32768 FreeSWITCH Version 1.2.0-rc2+git~20120731T213556Z~e97da8e20a (1.2.0-rc2; git at commit e97da8e20a This is the relevant error message that I am getting, I cannot register any users at all, even though they're in the directory 2012-09-08 10:02:13.716511 [DEBUG] sofia_reg.c:1470 Send challenge for [ 1000@23.21.191.100] 2012-09-08 10:02:13.796513 [WARNING] sofia_reg.c:2442 Can't find user [ 1000@23.21.191.100] You must define a domain called '23.21.191.100' in your directory and add a user with the id="1000" attribute and you must configure your device to use the proper domain in it's authentication credentials. 2012-09-08 10:02:13.796513 [DEBUG] sofia_reg.c:1414 Send forbidden for [ 1000@23.21.191.100] 2012-09-08 10:02:13.896514 [DEBUG] sofia_reg.c:1470 Send challenge for [ 1000@23.21.191.100] 2012-09-08 10:02:13.976510 [WARNING] sofia.c:5199 Ping succeeded flowroute with code 200 - count -1/1/1, state UP 2012-09-08 10:02:13.996519 [WARNING] sofia_reg.c:2442 Can't find user [ 1000@23.21.191.100] You must define a domain called '23.21.191.100' in your directory and add a user with the id="1000" attribute and you must configure your device to use the proper domain in it's authentication credentials. 2012-09-08 10:02:13.996519 [DEBUG] sofia_reg.c:1414 Send forbidden for [ 1000@23.21.191.100] Any insight would be greatly appreciated Mel