Fun facts, the original lead designer of Cyclades Network (Minitel's competitor) is Louis Pouzin using packet switching technology, instead of circuit switching of Minitel, from which TCP/IP was derived [2]. He's widely considered the 4th Internet guy after Cerf, Kahn and Berners-Lee.
He originally coined the popular keyword "datagram" that described the very nature of the stateless packet switching based network layer packet structure that is known as IP today. The cue of the word "gram" took the name from telegram that embodied the close resemblance of Internet to the messaging architecture of the postal system than the telephone system.
[1]Minitel: The Online World France Built Before The Web:
https://spectrum.ieee.org/minitel-the-online-world-france-bu...
[2]Internet Hall of Fame: 2012 Inductee Louis Pouzin: