My friends helped me use the GPIO to set up a nice, user-friendly button to connect and disconnect the dial-up connection, as well as a notification light to signal whether the dial-up is connected, connecting, or off. I actually made her a dial-up WiFi router using an RPi, USB WiFi and dial-up modem adapters so that she can create a WiFi network off of her dial-up connection to download e-books. My parents bought her a Kindle a while back, which is difficult to use without WiFi internet access, although it doesn't require much bandwidth. Perhaps Skylink will be an option soon, although not yet. Her house is unfortunately also down in a valley, so there's no cell phone reception, although there's reasonable 5G service if you walk up to the top of a nearby hill. She lives in a very rural county in Tennessee, and there are no DSL, cable, or fiber options. My grandmom legit still uses Netscape dial-up as her ISP.
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