Hi, I posted a similar question a little while ago, and got some help from Jozsef Kadlecsik. (Thanks!) Unfortunately, I have not been able to find a solution to my problem, Which is how can I use the MGCP protocol through a Linux box doing NAT? It seems to be possible because the Linksys WRT54G with stock firmware is doing it. I have so far not been able to figure out why it is doing it. Has anyone here ever gotten MGCP working across a Linux NAT box? Do you have any suggestions for how I can do the same? Thanks for any help that you can give me. Andrew Cant Developer LogiSense Corporation "IP Billing and Traffic Management" e: acant@xxxxxxxxxxxxx p: 1-519-249-0508 x4108 w: www.logisense.com weblog: http://blog.logisense.com forum: https://ssl.logisense.com/support/forum