Episode 2 of 2
Opening of the First Commercial Exchange
- When
- January 1878
- Where
- New Haven
Coy designed and built the first commercial US telephone exchange, opening in New Haven in January 1878.
The exchange opened in New Haven, Connecticut, in January 1878. It was designed and built by Coy. This event is recognized as the world's first commercial telephone exchange, marking a significant milestone in telecommunications history.
Sources
- Telephone exchange Wikipedia, revision of 2026-09-26
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.