I am given this connection by my company, I rarely need it. But my needs are critical, eg: when you need to attend a conference call from home and require desktop sharing, this stupid connection doesn’t work and causes embarrassment in front of all. This happened to me several times. What actually happens is that your broad band signal will die, the reason could be the servers are shut down, for reason 1) no backup power 2) someone responsible for server monitoring is sleeping 3) congestion.
The real experience is when you call their support, they give utterly stupid suggestions(like uninstall and install, change your system, etc.), ultimately unwilling to listen to you and create a ticket for you.
If you want to test people’s patience limits, you can do so by having them call their support.