A 56K dialup? My in-laws, living just barely outside Washington DC, can get no faster dialup connection than 28.8 because the NEW building in which they live can't handle anything faster -- or rather, the wiring and building are new, but the local switching equipment is Stone Age.

If you're doing dialup, Martin, I don't know if you can share via a network. I think you'd need a seperate phone connection for each PC.   Or you could get one of those duplex phone plugs, the ones that allow two phone to share one phone outlet (RJ-11 in the US).

Unless...no, a mux (multiplexer) doesn't, as far as I know, do outgoing.   Besides, it would cost a bundle IF you could find one.