HackerTube / Video
Speedy Cutover Service, SXS switching cutover to ESS filmed live at Glendale CA central office, 1984
AT&T Tech Channel
A 1984 AT&T film showing the live cutover of a Glendale, California central office from step-by-step switching to an electronic switching system. Installers prepare the site and then cut cables in a coordinated operation.
HN links it as a vivid example of high-stakes telco cutovers, done with careful coordination, big cable cutters and under a minute of downtime.
6 Hacker News mentions · 2018–2025