Comments by "User 2C47" (@user2C47) on "Century 21 Calling, 1962 - ATu0026T Archives - World's Fair tour" video.

  1. In fact, ESS works better with DTMF, and needed a separate processor to efficiently handle dial pulsing.
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  2. They were so focused on the telephone network that they could not predict IP, servers, or packet switching.
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  3. It costed extra because it required extra equipment in the central office. 3 way calling bridges are not cheap! Also, this did not become common until the 80s due to older systems already being in place.
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  4. This film was created in the middle of the civil rights movement.
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  5.  @cesaranthonyviralta5495  If the elevator kept moving, I would assume it was a mechanical failure in the door causing it become detached from the motor. The alternative is a major problem with the controller which resulted in the door opening and the safety circuit having no effect.
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  6. This video demonstrates ESS, which should be natively DTMF, therefore requiring no extra equipment.
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  7. This probably worked using a small rotary switch attached to the phone line, rather than running 10 phone lines to each subscriber.
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  8. Anyone can ring the bell.
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  9. Because you are looking for the number 53.
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  10. If they found a crashed ship, we would have had a lot more "inventions" than rudimentary transistors. The transistor was discovered during a study on semiconductors.
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  11. The equipment will probably wait for 5 more digits, and eventually time out.
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  12. No. They have hardware safety systems and hardened controllers.
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  13.  @ernststavroblofeld1961  That means it won't work.
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  14.  @ernststavroblofeld1961  What do centrifuges have to do with aviation? Also, have you not realized that i'm not just another internet troll?
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  15. Source?
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