Curious as well, recently got one and read up the tech page on them, seriously sounds like they just leveraged the same Telegraph/Telex lines, similar voltage and polarity reversal for signaling, but audio similar to RTTY if Im not mistaken.

Jeff

On Feb 16, 2025, at 12:00 AM, abowman89 via GreenKeys <[email protected]> wrote:



     This is bait and I'll absolutely bite, yes.  What specificly?  Like switch boards?  I really love the western union desk fax machines and wanna know what was between them.
       Andy



Sent via the Samsung Galaxy S24+, an AT&T 5G smartphone


Sent via the Samsung Galaxy S24+, an AT&T 5G smartphone


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