That's an A4 piece of paper for scale.
I have this Linksys VOIP router that I used to use on my old landline to interface with an Asterisk server, but I don't think the firmware supports this use case.
The high school teacher was later (the following September) in my freshman comp sci class learning assembler. Very strange to have your math teacher (doubled as computer teacher) in class with you.
Still sometimes find these, but more often the 9600-56k more modern ranges in random server rooms and offices, still running all kinds of things that no one understands or wants to touch. If I didn't hate consulting so much now, I thought about going into this at some point to charge breakneck prices to do archaeology for these companies. I'd feel bad though replacing or touching such beauty, not to mention they often are the backbone of many businesses so that's why they are so paranoid to go near.