Grandma's Phone, DSL, and the Copper They Share (hackaday.com)

szczys writes: DSL is high-speed Internet that uses the same twisted pair of copper wire that still works with your Grandmother's wall-mounted telephone. How is that possible? The short answer is that the telephone company is cheating. But the long answer delves into the work of Claude Shannon, who figured out how much data could be reliably transferred using a given medium. His work, combined with that of Harry Nyquist and Ralph Hartley (pioneers of channel capacity and the role noise plays in these systems), brings the Internet Age to many homes on an infrastructure that has been in use for more than a hundred years.

Comments

What year is this?

[pak9rabid]

Did I accidentally wake up in 1999?

Re:Everyone's phone, DSL and copper

[szczys]

It's not a judgement on your method of communication, but a recognition that a telephone from 80 years ago will still work on the same system. Remarkable.

Sigh.

[ledow]

Looks like the new owners of Slashdot are also failing to combat the biggest problem faced by the site for the last few years.

Junk making the front page that talks to me like I don't already work in IT or understand how common household technologies work.

Disagree

[kbahey]

I disagree.

Not everyone here studied this stuff. Some of us are self taught, or are experienced in other fields (software, systems admin) ...etc.

So, having stuff like this is enriching to some here, and relevant to the site ...