His findings, while not terribly surprising, are nonetheless fascinating. Nothing in 2015 works with a 56K modem. Facebook tried its best but often withered and became a jumble of links and text.

Speeds crept up over the years, eventually reaching 33.6 kbps—thought to be the practical limit for audio modems running over the telephone network. Yet, hindsight tells us that 56k modems ...

Yet, hindsight tells us that 56k modems eventually became the norm ... End users still had to use regular modems, which would have their analog audio output converted through DS0 at some point ...