The old Dataset-1 and Dataset-2 will work on any RS-232 asynchronous data interface from 300 to 19,200 bps, including the SMDR output port on any sx200 or sx2000 ever manufactured.
Now here's where my recollection is fuzzy.
Whether the SMDR data port is a DCE or DTE device I honestly don't recall.
However, armed with an RS-232 breakout box it should be something you can figure out.
If it is DCE you will need a null modem cable between the SMDR output port and the dataset.
I do remember quite specifically that you will need to force RTS high.
In fact on the dataset I strap all the flow control and carrier detect leads high (RTS, CTS, DCD, DTR) then use Xon/Xoff for flow control out of the PBX.
That way you only need, at most, 3 wires between the PBX and dataset (Send data, Receive Data and Ground).
I've never used an 1100-series dataset so I can't help you there.