Sort of like ISDN.
https://ethw.org/Picturephone
This page says it took three normal phone lines to make the connection. A standard one for the audio and two additional lines for the video. It doesn't describe the technology (analog or digital) for the video signal but it had the two lines channel bonded like you could do later with ISDN. Expensive!
I remember seeing the ones at Disneyland in the 1970s.
Mark ☑️
npub1pp…kgccm
2026-03-27 22:54:36 UTC
in reply to nevent1q…ml93
Author Public Key
npub1ppejqu0f4gz74tkrjkkmf3gjuhmmsu59j780jlaqhn75zyvvjees6kgccmSeen on
wss://relay.momostr.pinkPublished at
2026-03-27 22:54:36 UTCEvent JSON
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