How many stepping switches are needed to route calls between old rotary-dial telephones? Let's see.
Want to install a machine telephone exchange into your hackerspace? It's for you.
By the way, there is an long read article for the International Journal of Proof of Concept or GTFO issue 21 waiting for its readers.
There is another article on single page specially crafted for PagedOut magazine lead by Gynvael Coldwind. I hope he will recover from disease and publish it eventually.
this is insane! i fucking love it :D