Do Analog Dial-Up Modems Still Have Some Relevance in the 4G / 5G World? – IoT Bytes
StarTech.com Fax Módem USB 2.0 Externo de 56K V.92 Basado en Hardware - Con Velocidades de Transferencia de Hasta 56Kbps (datos) 14,4Kbps(Fax) - Dongle para Ordenador, Portátil, CMS, POS (USB56KEMH2) : Startech:
Dial-Up Modem Standards - TelecomWorld 101
How 90's dial-up Internet worked, and let's make our own ISP. - YouTube