Working in Private Branch Exchanges

It took me a long time to realize that Bell Labs was cool. You see, my dad worked at Bell Labs, and he has not done a single cool thing in his life except create me and bring a telescope to my third grade class. Nothing he was involved with could ever be cool, especially after the standard set by his grandfather who is allegedly on a patent for the television.

It turns out I was partially right. The Bell Labs everyone talks about is the research division at Murray Hill. They’re the ones that invented transistors and solar cells. My dad was in the applied division at Holmdel, where he did things like design slide rulers so salesmen could estimate costs.

[Fun fact: the old Holmdel site was used for the office scenes in Severance]

But as I’ve gotten older I’ve gained an appreciation for the mundane, grinding work that supports moonshots, and Holmdel is the perfect example of doing so at scale. So I sat down with my dad to learn about what he did for Bell Labs and how the applied division operated.

I expect the most interesting bit of [...]

---

First published:
November 20th, 2025

Source:
https://www.lesswrong.com/posts/TqHAstZwxG7iKwmYk/the-boring-part-of-bell-labs

---



Narrated by TYPE III AUDIO.

---