was agreed upon after the Cuban Missile Crisis in 1962, and was intended to help
prevent an accidental war.
was not a telephone, but a teletype machine at both ends. The unit in the USA
was at the Pentagon, in the Soviet Union it was at the Kremlin.
hotline was achieved with a 10,000 mile long cable between the two capitals, with
encoding and decoding cyphers along the way to prevent the messages being read
by unauthorized personnel.
first message sent was sent from the USA:
quick brown fox jumped over the lazy dog's back 1234567890.
sequence uses all of the keys on the teletype machine.
fact the line was rarely used. In 1999 a secure telephone connection was introduced
between the two nuclear powers for the first time.