4 ms·
The really cool modems of the 1988-1992 period implemented proprietary on-the-fly compression on top of 2400 baud. This was standardized as V.42bis. As a refer
by dsr_ 10y ago
The really cool modems of the 1988-1992 period implemented proprietary on-the-fly compression on top of 2400 baud. This was standardized as V.42bis.
As a reference, I could usually read a text file faster than 2400 baud (roughly 240 characters per second) but not faster than 2400 baud with V.42bis compression.
- deadlyllama 10y agoThe proprietary predecessor was MNP5 (Microcom Network Protocol). The cool thing about MNP5 was that you could implement it on the host PC. There was a DOS terminal program and a FOSSIL driver which worked with my ancient 2400 baud modem (so old it didn't do AT commands) that made BBSing more tolerable.