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Notice the supermarket company still had a Telex number in 1990. Even though they had likely possessed a fax machine for quite some time already.

• qingcharles 2y ago
  Telex was still pretty big in the UK in 1990...
• dboreham 2y ago
  If you have working telex, fax isn't an upgrade.
• justinlloyd 2y ago
  The fact that telex was immensely faster, lower bandwidth, operated on terrible PSTN networks (not regular telephone networks) with absurdly low quality, could work internationally with no special hand-off equipment or special fax lines being required, and had multicast and store-and-forward built-in to the protocol and had an image printer protocol extension that was superior in quality to fax and again, required no special equipment for international transmission, could work even when the mains electricity was down (phones and telexes were on separate networks), teleprinters could be powered directly from the telex connection, could work over low bandwidth ham radio connections, and is still in use today in certain parts of the world where it is critical the information gets through, there's a reason that a lot of companies still used the telex well into the early part of the 21st century. Not meant as a explaining type of response, merely as a "this is an interesting piece of useless information."
• jandrewrogers 2y ago
  I worked at companies that had telex in the mid-to-late 1990s. They were the preferred method for some overseas communications.