﻿It is possible to define when the device confirms the physically addressed telegrams received.

always: The coupler always confirms every physically addressed telegram received.

only for forwarding: The coupler only confirms the forwarded physically addressed telegrams.

always reject (NACK)!: The coupler rejects all physically addressed telegrams received and sends a NACK-Confirm.
No physically addressed telegram can pass the coupler. 

Note: This setting cannot be parameterised on both sides at the same time.
