| ▲ | whycome 8 hours ago | |
What other sci fi technology is being lost on us now? I always that the complexity of the local-battery-powered copper-cable telephone exchange system was bonkers. It was the backbone for all our landline calls. | ||
| ▲ | Findecanor 4 hours ago | parent [-] | |
The telephone system also powered the phone, and often worked when the power grid did not. | ||