this post was submitted on 25 Aug 2026

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We ignored the signs. (sh.itjust.works)

submitted 4 days ago by Lisk91@sh.itjust.works to c/programmer_humor@programming.dev

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[–] bandwidthcrisis@lemmy.world 3 points 3 days ago

This pic is an acoustic coupler, which played sounds and listened to them from the handset. Modems would connect directly to the phone circuit, bypassing actual sound waves (although they did still have a little speaker so the you could hear what they received).