My ISP has just recovered from a system wide crash that resulted in a 20 hour outage. Notwithstanding that it resulted in loss of email etc, it also resulted in the loss of my VOIP service. After decades of POTS , the telephone companies have rung out all the bugs and we have a service that just works. By contrast, the internet (and by extension VOIP) is still in it’s infancy, such that the availability is simply pitiful by POTS standards.
It would be interesting to know what percentage of internet outages are caused by software failures!
