Going back to comments about using telex machines, they were a life saver for me in 1974/5 due to the physical print-out you got. I was based in Karachi but sent to Singapore to buy and load a lot of kit for our upcoming drilling operation in Baluchistan, could not get a phone call from Singapore to Karachi for love nor money, so arranged with the hotel that I would use their telex machine and give them a print so they could charge me useage - and as the telex office in Karachi was opposite my bosses's office, soon as I started sending my report he could come in, read then comment and instruct via telex so printed. Also I got a physical print out of the messages, which I kept. After finding and contracting a forklift I'd been instructed to find, then being chastised by head office for contracting it as I did not have that authority, I was able to prove that I was following the written instructions of my boss! It was part of me deciding I could not longer work for that pratt, quitting etc - much longer story!!