Tomorrow has just been brought forward a day
Make this change:
OBi110B > Voice Service > OBiTALK Service > InboundCallRoute: {(290713xxx|200379xxx|200163xxx)>(Mli):li},{(290713xxx|200379xxx|200163xxx):aa},{ph}
Change Line Port DigitMap in OBi110A:
(211|xxxxxxxS4|1xxxxxxxxxx|xx.)
Pick a speed dial slot in OBi110A – let's say slot 6 – and put this in that slot:
pp(ob200xxxxxx)
where 200xxxxxx is OBi110B
From OBi110A you will have to dial 6*211, which should result in #211# being sent out of OBi110B.
Due to technical problems, I am unable to test anything just now