[GreenKeys] How were teletypes connected across long distances?

[Chuck Robertson]

Probably dumb question:


If they didn’t have modems or routers, and the machines send and receive
only by 110v current, does that mean there were dedicated wires across long
distances between cities, carrying electrical pulses between sending
machines and receiving machines?


Say it's 1959 and the Associated Press in New York is sending 6-bit copy to
its member/subscriber newspaper in Sioux Falls, South Dakota. Is the copy
actually traveling 1,400 miles on a dedicated AC or DC wire? If so, what
was the wire's voltage?


Are the phono plugs in that 1942 photo of the New York Times wire room
zapping careless daydreaming copy boys?


Thanks in advance.
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