[jpeterman]

Every time I see posts like this on HN, I feel obligated to post http://www.evan-doorbell.com/production/

I originally discovered this guy from HN and the audio recordings on that site are mesmerizing to me.

[waiseristy]

The internet is amazing, hours upon hours of quality content about nothing else but telephone networks!

[bjelkeman-again]

That was interesting, a telecom museum should make sure these recordings don't go missing.