I am testing Softphone VOIP and it works "ok" when on the network. However when I test it over a Sonicwall VPN, it fails to find the server. When I do nslookup "control unit ip address" it fails out. However, I can ping it. I am using Win XP and Sonicwall SSL VPN client. Is there any reason that I may need to have the IP Office servers on the domain to get it to work?