I have found one of these in my garage this morning whilst having a bit of a clear out, it has Masterlink at one end, and a Datalink connection at the other
I plugged a masterlink cable from the 1615 into one of the Bosscom Masterlink wall boxes in the bedroom
I plugged a Datalink cable from the 1615 to my iPod, setup link for the Ouverture downstairs to recognise the link room, but the experiment did not work :-(