Thanks. The config files are on an FTP with our current service provider that we resell . We want to switch the phones to a new carrier host and I don't think our current service provider will give use write privileges on their FTP site (although I haven't tried yet).

I did find out that DHCP option 160 worked well as a test using a factory defaulted VVX series phone. Next test will be to try this with phone that is already provisioned.