What is this??? - Update

At 01:20 15/06/2004, you wrote: The Prism modems we used to sell for dialing-up Prestel when I worked at Micronet (OK, give away with a subscription) back in '80s used a DIN connection for their serial interface. It's highly likely this was intended for use with one of those, as it was pretty much the cheapest modem out there.. Prism, incidentally, manufactured the standalone modems, and an integrated modem/interface/software box for the ZX Spectrum, and then promptly went out of business. Micronet bought up all the stock, untested, and was therefore able to give them away free if you subscribed. The number we got back as faulty was amazing .... we didn't even check them when someone returned one, just sent out another.. It was not uncommon for people to get two or three faulty ones in a row.... Rob