- POTS vs. PSTN
- The plain-old telephone system is dreadfully underengineered
- 64 kbps channels dedicated to each voice channel -- 56kbps useable; What does understandable speech actually require?
- system is far too intelligent--limits utility for VRU/cloud-transfers/et al
- was analog, now essentially digital
- Internet/VOIP will supercede in time
- analog vs. digital lines
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