> There were others available slightly earlier, but they were commercial-grade and prohibitively expensive
They were not “commercial grade” exclusively. I had a Hayes Smartmodem 1200 in 1983 or 1984. It was absolutely consumer. In fact the case was identical to the Smartmodem 300 but with an extra LED or two. I hooked it up to an Apple 2e. It was indeed expensive, though.
They were not “commercial grade” exclusively. I had a Hayes Smartmodem 1200 in 1983 or 1984. It was absolutely consumer. In fact the case was identical to the Smartmodem 300 but with an extra LED or two. I hooked it up to an Apple 2e. It was indeed expensive, though.