I have several IBM ThinkPads with an RJ-11 port that can be used for dialup internet connections. Currently I have one ThinkPad connected to a dialup modem, that connects to the internet through a modern ThinkPad with Ethernet. What would be the recommended solution for connecting multiple computers with dialup, without using a dialup modem for every ThinkPad?
So, I would like to have a star topology with an RS-232 uplink to a modern internet connected device. What is the recommended equipment to buy?