[Coco] Using a coco modem with VOIP

[William Astle]

On 2019-11-11 11:09 a.m., rietveld rietveld wrote:
> Has anyone had any success using a dial up modem with a VOIP. I have not had any luck doing this using my magic jack. I would love to be able to save the long distance charges

I would be surprised if it works on VOIP connections at all. This is 
simply due to the lossy compression used to squeeze voice communications 
down minimal bandwidth. This pretty much destroys the fidelity of the 
modulation used by the modems. Also consider that if the effective 
bandwidth of a VOIP connection is 8kbps, then you can't get more than 
8kbps data speed even with perfect data support over the connection, and 
once you add in the audio modulation, you lose a fair chunk of that.

(Arguably, VOIP connections destroy voice fidelity, too. I absolutely 
despise talking to people who are using VOIP connections most of the 
time due to the ridiculous amount of distortion that is often present.)

Now, an uncompressed or losslessly compressed VOIP connection would 
probably work. Or one that detected the modem handshake and adapted the 
compression algorithm to match.