An update to my dial-up ISP project. I got a two node modem pool working a PCI card to add more serial ports. Instead of my Verizon line, I patched these modems into my PBX running asterisk with a Grandstream ATA with 4 internal lines. The PBX takes incoming calls from a new number and uses a basic hunt group to connect to caller to the next free line.

Got a dialup modem? Feel free to give a call and let me know what OS you are using, how it goes. Details at

@alexbuzzbee You could always get a voip line or a magic jack or something if you truly wanted to fall down this rabbit hole. Your life will be prone to latency issues, happy modem sounds, and hundreds of feet of silver phone wire. You may or may not one day think it is a good idea to buy a fax machine or answering machine. You'll wake up in a cold sweat wondering where your punchdown tool is.


@Famicoman Plugging a USB modem into a magicjack is a hilarious image. Just two USB phone jack dangly things hanging out the back of the same computer plugged into each other, converting bytestreams into audio and then back into bytestreams.

@alexbuzzbee I love that mental image. I actually might do it at some point because it seems so funny.

Sign in to participate in the conversation

Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.