In June 1963 Soviet premier Nichita Khrushchev and American President John F. Kennedy established a direct communication link between their governments — the colloquial imaginary “Red Telephone.”
The first system used a telex link to type messages that were decoded and translated by military interpreters and forwarded to the country’s commander-in-chief.
The first test message, sent from Washington in August 1963 was: ‘The quick brown fox jumped over the lazy dog’s back 1234567890’.”