I have a 2N Video Intercom, and on 4.5 I was able to easily use that "dirty hack".
Now with 5.2.3 (Vodia mini PBX) of course it doesn't work.
I tried to enter the web settings of the phone (snom 821), but it looks like after auto-provisioning I can't access the web settings (hint: I installed several snomone pbxs, but I'm NOT a snom guru).
QUESTION: Where do I have to enter the URL of the "video" exactly?
Can you provide a step-by-step tutorial to make it work?