21 Jan
2018
21 Jan
'18
9:32 a.m.
On Sun, Jan 21, 2018 at 07:25:34AM -0500, John Heritage via vcf-midatlantic wrote:
In practice, a 2400bps modem without error correction would be limited to ~ 240 characters per second, while the same modem with error correction would be ~ 300 characters per second raw throughput.
My questions are -- is this a correct recollection? and when did error correction become pretty standard -- was it the 2400 "baud" era or was it more like 9600 bps and above?
Looks like introduced during 2400 era but common at 9600 and above. https://en.wikipedia.org/wiki/Microcom_Networking_Protocol http://www.astro.rug.nl/~vogelaar/modems.html