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Once upon a time I owned a little black box that would simulate enough of a phone system that you could plug two computers' modems into it and computer A would
by glonq 3y ago
Once upon a time I owned a little black box that would simulate enough of a phone system that you could plug two computers' modems into it and computer A would get a dial tone and computer B would get a ring.
It was great for developing and testing dialup-based software without having to tie up real phone lines.
- tomatocracy 3y agoThese are called telephone line simulators, and you can find them on eBay occasionally still. If you want the 56k standards (K56flex, X2, V.90, V.92) though, it gets more complicated because the 56k side of the connection has to be connected via ISDN. So you'll need an ISDN simulator instead, plus an ISDN modem which speaks the 56k protocol and a way to get an analogue phone connection out of an ISDN line (might be built into some simulators but there are other ways to do this as well).