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Serial communication via PSTN modem

Discussion in 'Electronic Design' started by jul, May 5, 2004.

  1. jul

    jul Guest

    Hi,

    I need a wireless RS232 full duplex link between 2 serials terminals on
    about 50 meters. So as to avoid to pay too much in wireless rs323 module,
    i'd like to know if it's possible to use a classical telephonic modem (V92
    or other) and make an interface that simule the switch telephonic network.
    Does anybody have an idea about that,

    thanks
     
  2. Colin Dawson

    Colin Dawson Guest

    Why not just run a standard serial cable between the two terminals? It's
    capable of working over about 150 meters.
     
  3. scada

    scada Guest

    I have to agree with Colin, just go straight copper between both serial
    ports. If you still want to go with modems, check out
    www.blackbox.com you can get modems that will go over single pair copper
    lines.
     
  4. scada

    scada Guest

    On the second read of your post, you did say Full Duplex. The black box
    solution will work, but they are expensive. You could try the telephone line
    simulator from MCM Electronics www.mcmelectronics.com #72-6548. I have used
    it for testing modems in the Lab environment, I would think it could go the
    distance!
     
  5. There are rs232<>rs422 converters too.
     
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