Hi, I'm running FreeSWITCH on a server that has no NAT in between... the server is on Slicehost (slicehost.com), a VPS. I'm trying to register my softphone (Zoiper and X-Lite) from my computer, my computer is behind a router (NAT). So the scenario is the following: Softphone (Zoiper or X-Lite) -> router (NAT) -> INTERNET -> FS server (no nat -- public ip address). The problem is that I can't make it register, sometimes it will register and sometimes it wont, this problem is randomly. This is what I have in vars.xml: <X-PRE-PROCESS cmd="set" data="domain=maitei.com.py"/> I'm not sure if this has something to be with STUN or NAT, it works fine with Asterisk... in Asterisk I have nat=yes in my SIP user (sip.conf), is there a equivalent of nat=yes in FS that I can use for my user? Thanks, Diego