"The terrible phone connection I was blaming on our VoIP line turns out to be the cordless phone clashing with WiFi," says Matthew Weinberg. "May need to go corded."
That's as good an example of any about the changes IP technology has wrought for service providers, who no longer can simply sell a connection, terminate at a network interface and hand off the premises network and devices to an end user. That generally worked when interface specifications were stringent and the total number of devices and applications were limited.
These days the application and device environment is much more complex. But users will call their service provider when applications or devices don't work properly. One way or the other, greater involvement in premises networks and configuration are required.