smiths
5
Long time since I have done this.
If you use just an IP address in option 66, Grandstream will perform an http request to the server. This is the most compatible with the original intent of option 66 (which was to send a tftp server ip address)…
Grandsteam also support embedding a URL in option 66 http://1.1.1.1/gs for example. Not sure you can do an https, as I think certificates will get in the way.
Simon