Bedienungsanleitung und Referenz für 56K Message Modem
Bell 103 modem | Semantic Scholar
IEEE - The first commercially available internet modem, the Bell 103 by AT&T released in 1962, had a speed of 300 bits per second. Now, just over fifty years later, the fastest
Novation CAT - Wikipedia
Web Timeline | Timetoast timelines
Jason Scott on Twitter: "The #TedNelsonMail project continues to pay extraordinary dividends. I'm jumping the gun on this one before it gets into the main collection because it's amazing: A pristine scan
Open Box: CNet CN5614XR External Data/Fax Modem 56Kbps RS-232 (Serial Port) V.92 and earlier ITU standards, Bell 103, Bell 212 Modems / Gateways - Newegg.com
Acoustically Coupled Modems
The Complete History of the Modem - History-Computer