Back in 4.05 I wrote up a bug to this effect because of how some WinTerm and Windows CE devices were connecting (the API for TS was returning the same computer name across devices or return no computer name at all).
The result of it was that if you are on MAS 200 and going through Terminal Services, you can use the old throwback MAS90FID environment variable. You would set it up in Control Panel / System / Environment Variables. And you don't have to make it equal to T1, T2, etc like in the past.
So for BertoWud in the Master Console, for the MAS session going through TS / Citix, he would see MASServer in the Station column, which is different than the Station seen if MAS were started up directly on the server (woohoo).