Pure old copper-line phones did not need a working power outlet in your home - electricity was introduced to the system at facilities of the phone company (often miles away), and often used a dedicated electric grid.
With VoIP, you tend to have your own, plugged-in wall box. Which becomes useless the moment your electricity stops, e.g. in case of natural disasters.
Also, analog telephony just sounds better than digital one. No downsampling happening.
and if you want to dial 911 with a land line, you literally only need a speaker and resistor connected to the phone line. you can yell into it as a mic, and just tapping the line on and off dials a number.
Has anyone tried plugging all of their internet-related equipment into a UPS, including the wall box? Will that allow you to keep VoIP working in the event of a power outage, or is it a pointless exercise since the ISP's equipment on the pole will also be down?
Analog telephones have terrible bandwidth. Just 300–3,300 Hz. This it technically called the voiceband, but it cuts off a good portion of female speech.
Also, all phone lines these days, wether POTS or VOIP are digitally trunked and switched.
With VoIP, you tend to have your own, plugged-in wall box. Which becomes useless the moment your electricity stops, e.g. in case of natural disasters.
Also, analog telephony just sounds better than digital one. No downsampling happening.