Siemens SCALANCE X-200 Operating Instructions Manual page 79

Connectors
The cables are connected over BFOC sockets.
Note
The SCALANCE X206-1LD may only be coupled over its optical ports with
 SCALANCE X212-2LD
 SCALANCE X204-2LD
 SCALANCE X206-1LD
 SCALANCE X-400 with module type MM491-2LD
 SCALANCE X101-LD
 OMC TP11-LD
 OSM ITP62-LD
Coupling optical ports with
 SCALANCE X106-1
 SCALANCE X104-2
 SCALANCE X206-1
 SCALANCE XF206-1
 SCALANCE X204-2
 SCALANCE XF204-2
 SCALANCE X202-2IRT
 SCALANCE X212-2
 SCALANCE X-400 with module type MM491-2
 OMC TP11
 OSM ITP62
 OSM ITP53
 OSM TP62
is not permitted.
SCALANCE X-200
Operating Instructions, 12/2011, A5E00349864-19
Product properties
3.15 SCALANCE X206-1LD
79