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.
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.