An engineer shares a nostalgic account of building a homemade PBX telephone system in the early 1990s using salvaged components and microcontrollers. The project was driven by a lifelong fascination with telecommunications and repurposed hardware. The article is presented as an educational retrospective rather than a technical guide.
Background
PBX (Private Branch Exchange) systems are private telephone networks used within organizations, historically built with physical hardware before VoIP became dominant. DIY electronics projects were common among hobbyists in the pre-internet era.
- Source
- Lobsters
- Published
- Apr 26, 2026 at 04:10 AM
- Score
- 5.0 / 10