We are trying to implement asterisk server for our video based door entry system. The system will have door entry panel on the resident entrance and video monitor inside the apartment of the residents.
The problem we got is we get the video stream once the call is answered. Before answering the call there is no video, where as in basic door entry system we should be able to see a person before the call is answered. We have this feature in 3CX, but we could not able to enable it in asterisk.
Please your suggestions and solution will be very helpful for us as this is going to be a big project.