Reading this reminded me of my earliest "IT Guy" days in the mid-late nineties when nearly every office had a PBX no matter the size. I just remember replacing

Reading this reminded me of my earliest "IT Guy" days in the mid-late nineties when nearly every office had a PBX no matter the size. I just remember replacing burned out line cards, and the system held like 20 cards of 5 lines a piece. They'd burn out for no reason and you had to replace them randomly on a Friday after you were half way home and thinking about the cocktail that needed mixing.