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  BELL 103 AND 212A (AMERICAN BELL STANDARD)
     A North American standard that specifies the way modems transmit
     information.
      *   Version 103 applies to asynchronous modems transmitting at speeds
          up to 300 bps.
      *   Version 212A applies to full duplex asynchronous or synchronous
          modems that transmit at speeds up to 1200 bps. | 
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