From software 1.15 the feature, Door station is supported.
You can operate up to 20 Door stations with video surveillance on the Maxwell 3/4. The pictures from the camera(s) are shown on the phone's display.
Maxwell Basic and 2 can also be configured to be used with Door stations, but is not capable to support pictures.
Prerequisite: The Door station must have been configured via the Maxwell 3/B web-interface.
If somebody rings the Door station, this is displayed as an incoming call on the Maxwell 3. The image from the video camera is also shown, the Maxwell will get the picture from the camera .. times per second so it looks like a video stream.