To be able to move the old system around we removed all of the old cards and piled them in the corner. I will be selling some of them on EBay soon. Let me know if you want to buy some of them. I plugged one of the old cards into 110 volts for a YouTube video years ago. It was very explosive ;-) Here is the link; http://www.youtube.com/watch?v=pZDMrHY23JM
When I arrived they had already removed all the old wires. They were lined up in the hallway. The new system had punch down blocks with jacks on them and then cables to match to the telephone system. That reduced the amount of wires to be punched down by 1/2.