T46G - manually configure a door camera

[SFA1492]

Hi,

I am using/selling YEALINK T4 phones for over a year now. What I miss concerning features is door camera support. I just stumbled over this post telling me the T46G supports the display of a camera picture. I watched the mentioned youtube video and was excited.
I couldn't believe that I have missed to find the described feature, so I checked my T46S. No feature "door phone" can be found.
Since the description is for a T46G I assume the T46S doesn't have that feature anymore. I also understand that the door cam image shown in the video is mainly possible due to a starface pbx.
After some more research I found a support article saying no YEALINK phone supports the door phone feature. I find the mentioned solution with dss key as XML browser as not very practical.
I don't get why the YEALINK phones with color display (e.g. T46, T48) do not have a native door camera feature like some other SIP-phones (e.g. Gigaset Maxwell 3).
IP-Cams are getting more and more popular, IP-doorphones with built-in camera as well.
It would be sufficient to be able to define a incoming number as a door phone, the URL for the camera picture and the DTMF-code to activate the opener.
So when a call comes from that particular number the phone displays the camera picture on the screen and after picking up it offers a soft key to open the door.
So YEALINK please work on that feature.