Back in the 90's, I remember working on an early ISP system that had a 16 port serial card, each connected to a modem. I forget who produced the card (Digi something?) There were revisions with at least 32 ports.
We moved to terminal servers pretty quick. These were dedicated devices that converted serial to IP (Livingston Portmasters, Xylogics Annex, Telebit Netblazers are the ones I remember working with.)
We moved to terminal servers pretty quick. These were dedicated devices that converted serial to IP (Livingston Portmasters, Xylogics Annex, Telebit Netblazers are the ones I remember working with.)