[GreenKeys] Backup system for TTY

[steve bennett]

We should consider a backup alternative to TTY.I suggest maybe pneumatic tubes.I was surprised to learn these were not just from point A to point B.You could encode an address on the tube and switching stations would route itto the desired location.
Fascinating stuff.Secret Marvel: NYC's Pneumatic Mail Tubes


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Secret Marvel: NYC's Pneumatic Mail Tubes


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