Date: Wed, 7 May 2014 00:55:45 -0600 From: Eric Smith<spacewar at gmail.com> Cool project! I'm interested in hearing how well V.32bis QAM modulation (14.4 Kbps) works over VOIP, since a lot of VOIP applies compression schemes intended specifically for voice. On uncompressed PCM, or PCM with only basic companding (mu-law or A-law) it should work fine, since that's what has most commonly been used by the phone companies for carrying domestic POTS calls. International voice calls often used more compression, which at the very least could be expected to increase the error rate. Eric