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AT&T Archives: The Step-By-Step Switch

AT&T Tech Channel · explainer · Watch on YouTube

History of computingNetworking & internet infrastructure

What it is

A 1951 Bell System training film showing how telephone calls are routed through a step-by-step (Strowger) switching office.

Why Hacker News recommends it

HN uses it as a favorite old explainer for mechanical telephone switching.

  • 1 people recommended it
  • 1 different months
  • 1 strong recommendations
  • first 2020, last 2023

What HN commenters said

  1. “My favorite old explainer video, telephone switching (1951)”

    Favorite old explainer on Strowger telephone switching.

    jetrink, 2023-07 · Strong recommendation · in “Hydraulic Steering – Principles of Operation (1956) [video]”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: strowger switch, telephony, at&t archives, electromechanical, bell system

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