I’m really looking for a way to allow zero config to work on an external subnet. We used the LAN port and set Network Settings as “Switch” and did everything per instrction. I fully expect that the user of the phone will manually set the configuration URL to HTTPS /zccgi
At this point, I get an empty xml file. I suspect that’s because the user is coming in from an external IP address that is also not whitelisted and UCM zero config. Zero Config on UCM does not allow whitelisting except of internal IP space (like 10.10, 192.168, and 172)… Why is this feature closed off externally and how can we fix it?
Our setup has the UCM at the data center and all offices are thus considered “remote” on a public IP. If we use OpenVPN then we can get our UCM connected to only 1 office and back haul through that which is not ideal.