Home assistant as a gateway for KNX to other devices

Is there a function like expose (data from HA to KNX), only in the other direction.
If a telegram comes from KNX to a specific GA, the data is sent to a device/entity or linked.
If not, how can I do it?

I’m new to HA, I’ve read the documentation and also googled it, but I haven’t found anything suitable.

Hi :wave:!
I think you are looking for an automation. See the KNX integration documentation for how to use the knx.telegram trigger.