I believe it was system 1015. [Thankfully not a long number!]

Yes. Part of it was given to three people - not me, and they aren't with the train anymore - during a stop at Jema'grethy some time back and one of those three people, Nita, then shared that info with me. Other parts were in the form of voice and video logs from the original crew that had been saved by the train and were shared with everyone on board.