27 Jul
2016
27 Jul
'16
8:58 p.m.
On Wed, Jul 27, 2016 at 04:20:32PM -0400, Russell Reiter wrote:
Well the fundamental problem is when the signal compression is done by the OS rather than the modem hardware itself. If the modem sends the info that it will be handling compression it tends to be recognized by linux as a serial device and connectivity can be handled in config files.
This has nothing to do with compression. Comrpession is just one tiny part of available modem standards. The issue is that many cheap modems are just a sound chip with a transformer and a relay connected to a phone line. The actual modulating and demodulating of bits to the phone line is done in software and play through the sound chip. There is no modem hardware at all. -- Len Sorensen