57600 baud is incorrect. It was 57600 bps which was achieved over a 3200 baud connection by utilizing sophisticated signaling and compression. https://tldp.org

57600 baud is incorrect. It was 57600 bps which was achieved over a 3200 baud connection by utilizing sophisticated signaling and compression. https://tldp.org/HOWTO/Modem-HOWTO-23.html https://tldp.org/HOWTO/Modem-HOWTO-23.html