“We are currently working on a solution and have a 344502 in our lab for investigation. I will keep you updated”
You posted this back in February. Can you confirm that the 344502 works in your lab? If so, can you share the wiring that worked + the Firmware Version that works.
Also: This instruction you gave Vasiliy back at end of February:
can you please tell me exactly the step you are stuck? After investigating this model, there is one thing you have to be aware of: Before you perform the Ring to Open test during installation, you must wait until the call station is back in normal operation. Please pay attention to the beep that you can hear outside when this state is reached
For me, the Ring to open test during installation only works when I don’t await the call station being back in normal operation. So before the beep that you can hear outside. If I await the beep, the door is not opened.
For the doorbell suppression, it might help looking back at version 1.2.5. and check what was implemented there to make it work. Somehow it got lost with the next version or the version after that.
I think there are some IT guys (including me) in this forum that can help fix this if we collaborate better.
I am also available for a chat in German if that would make things easier.