Thanks, I will look at the link you sent me. I have a different question. We are implementing video conference and it needs to be connected outside of the firewall. My ISP said that since they are not providing DHCP, NAT or anything like that, they dont have to do anything at their end, that it needs to be done at my end. If Im skipping my firewall, what am I suppose to configure? He said I can put my VC in a public IP I have available, but where is the calbe coming from the VC box plugs into?