There are some good and bad news:
The good news are that we have it working in our lab an will be able to release it in a beta soon.
The bad news are that a specific cabling is necessary which requires to place a resistor between two contacts. We will make instructions for this available here in the Dev Board, but it also means that Golmar Bus based intercoms will remain in beta for some time until an official „Golmar Adapter Cable“ (or similar) and all necessary modifications to the Apps are available.