7 May
2014
7 May
'14
4:02 p.m.
On 05/07/2014 02:06 AM, cctalk-request at classiccmp.org wrote:
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
I have Charter VOIP, and
have used a 14.4 modem for faxes with
no trouble. That may not tell you a whole lot, but at least
it works
in that limited mode.
Jon