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I started working in telecommunications in 1984. At that time, we sold video conferencing systems made by a company called Compression Labs Inc (CLI). At that time, their video codec could do point to point video conferencing between two locations, at a data rate of 1.5Mb/s. This was state of the art video compression at that time. The system was housed in a cabinet, that stood six feet tall, and was filled with shelves of circuit boards. And I think it cost somewhere around $300k (1984 dollars).
Now, we have multipoint video conferencing of much higher definition video, running on a computer or a smart phone. Massive improvements in cost, quality, size, power consumption, etc.
-rb
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