How can I run more than one PBX behind a single static IP and a DDWRT router? I have a Windows Server 2003 in my arsenal, plus two sperate boxes, one for each PBX. I need to make sure that SIP, RTP, and TFTP traffic is properly routed. And I also need to access the web admins easily from pbx.domain1.com and pbx.domain2.com. In addition, I need to be able to access a sharepoint site on the 2003 server at domain3.com. Please help.