PROTEL: The Language That Ran the Switch, and Why I Brought It Back 6 min read Featured Software Engineering PROTEL: The Language That Ran the Switch, and Why I Brought It Back Vincente D'Ingianni 2026.11.04 14 A first-hand history of PROTEL, the strongly typed language Bell-Northern Research designed in 1975 to program the Nortel DMS-100 family, from SOS and PROTEL-2 to PROTEL 2026, now open...Read More
Vincente D'Ingianni 
