Subj : Real Modem on VOIP?
To   : ray
From : Sean Dennis
Date : Mon Sep 07 2026 06:57 pm

Hello ray,

07 Sep 26 12:59, you wrote to All:

 ra> I have a USB V.everything modem, the big black one. Has anyone had
 ra> any luck using and old modem on VOIP? You would think there would be
 ra> something to convert VOIP to POT.

The problem with running a dialup modem via VoIP is that digigal, a la VoIP, 
doesn't allow for the full signal bandwidth that analog does so you're be 
restricted to about 2400BPS ("baud") at best.  Some have been able to get more 
but that's not a common thing.

In short, analog dialup uses a sine wave but digital converts the sine wave 
into a square wave, therefore basically cutting the signal "at the knees", if 
you will.  It's greatly oversimplifed here but that's the the basic idea.

-- Sean

.... Chemists have solutions!
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