tams elektronik BiDiBooster Manual page 21

BiDiBooster
Connection A + Connection C:
This version allows an easy and quick connection of an additional
booster via a RJ 45 cable even in the case, the control unit is connected
via the 3-pole DCC booster port to the booster.
Hint: If necessary you have to mount or dismount the terminating
jumpers (→ section 6.1).
Please note:
!
When using this connection version you have to connect all additional
booster via the BiDiB-port. It is not possible to make a connection
from the BiDiB port to the DCC-conforming port.
Hint
Only use boosters of one type and made by one manufacturer to avoid
problems such as:

Problems with data transfer to the decoders.

Current leakage that make locomotives move by themselves when
other locomotives cross the borders between two track sections.

Short circuits when crossing sections.
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Page 21