Charles U. Farley"John Cioffi had recently demonstrated echo cancellation would work at these speeds, and further suggested that they should consider moving directly to 1.5 Mbit/s performance using this concept. The suggestion was literally laughed off the table (His boss told him to "sit down and shut up")…"
That was in 1980. One of the reasons ISDN never really took off in the US is because modems got better, cutting into its speed benefit. And then ADSL came along. Imagine if ISDN had had DSL speeds from the start!
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