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I'd like to recreate old dial-up experience but without actual calling telephone provider's dial-up number. So I thought, maybe a linux machine could host ppp server and accept dial-up calls from win98 machine via the RJ11 wire and share Internet connection with it. Is something like that possible?

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+1 for nostalgic computer idea. – Moab Mar 27 '11 at 15:49
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You would need to interface the two modems with some form of telephone exchange system. Just hard-wiring them together won't be enough - the PSTN (telephone system) actually provides power through the wires for such things as ringing signals and such.

The closest you could get without a telephone exchange would be to just use a Null Modem cable to link two serial ports together and do away with the actual dialing part of the experience.

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What Matt said: null modem setup does work. – Pete Wilson Mar 27 '11 at 13:25
So the null modem cable is a serial rs-232 cable? So no modems/dialing used here? – user73672 Mar 27 '11 at 13:38
@user73672 It's a RS-323 cable with Tx and Rx pins switched at one side. Same thing is used with Ethernet crossover cables. – AndrejaKo Mar 27 '11 at 14:47
Ok so to sum up: no modem usage? Just serial port? – user73672 Mar 27 '11 at 20:25
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