we are using 2N door phones (2N IP verso, 2N IP vario or 2N IP Force to be specific) and the calls from door phone are received either on Yealink VP530 (EOL now) or Yealink T49G or Yealink T58V
Be aware - 2N door phones only support simple video codec out of the box (you'll get really small picture on yealink screen) so you need to look into buying additional license from 2N for the device.
all in all, it works great for us