ECM ERROR CORRECTION
PREMIUM FAX SUPPORT
We really know what we’re talking about. Ask most people how to get T.38 working and they’ll simply parrot back what google has told them – namely to slow the speed down to 9600 bps and turn off ECM error correction. This misinformation is so widespread that most carriers intentionally disable ECM support in their T.38 gateways. We think that’s crazy – the whole point of a facsimile is to have an exact copy of the image on the other side and that doesn’t happen without ECM, and if you slow the speed to 9600 you’re eliminating faster speeds and modulation speed that help cope with challenging audio conditions.