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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 (ofte
by DocTomoe 4y ago
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.
- throwawaaarrgh 4y agoand 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.
- TylerE 4y agoAnalog telephony doesn’t get used anymore. As soon as the call hits a telco box it’s going digital
- kijin 4y agoHas 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?
- timrichard 4y agoI did this during our last power cut. The ISP was unaffected. Kept a few table lamps going too.
- nikau 4y agoNot to mention the exchange usually had tens or hundreds of lead acid batteries which could keep it running for a long time.
- benjaminl 4y agoAnalog 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.