I have a YKP-301 intercom, which actually looked a lot like a supported YKP-200 so I thought it was it.
However, YKP-200 seems like an analog version whether YKP-301 is a BUS version.
I have tried connecting it with BUS+Generic manual. First time it didn’t even want to try, the second time when I switched polarities it did offer me steps to click buttons, go outside and call my flat, but it eventually didn’t open the door and gave me a configuration error.
It seems like it does detect the call, but then cannot open the door.
I wonder if anyone has experience with BPT bus systems. If there’s anything I can try to ‘sniff’ the communication over the bus, is there anyone to suggest the required equipment?