Osgeld Posted February 12, 2020 Share Posted February 12, 2020 (edited) This is a box that simulates the voltages, dialtone and ringing of a USA POTS (plain old telephone system) so you can connect various telephone devices, including a fax-modem without a land line just incase you ever want to modem connect 2 machines and cant find serial cables to direct connect them ... comes with instructions, box, and power supply free, pay postage, paypal only Edited February 12, 2020 by Osgeld 2 Quote Link to comment Share on other sites More sharing options...
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