I am trying to solve the following question and replicate the waveform through modelica from Mathematica. OLine does work but TLine1 does not. 
TLine1 uses the distributed parameter model that can accurately represent the behavior of the transmission line over a wide frequency range. Whereas, OLine breaks down the transmission line into a finite number of sections.
My expectation is TLine1 to behave in similar manner as OLine without oscillations. As shown above, I don't see that behavior from TLine1. I checked the same in Dymola and could see proper waveform. Is this a bug?
