Here's some important information. That was tweaked a little bit to give us 33.6kbs just last year.
Caution is the watchword.
Still, it has not achieved widespread availability. Bell Atlantic has made significant progress in the last year getting ISDN to us. But the 56k technology is really new, having only been proposed a few years ago in France. Here's where the caution comes in. There are two competing, incompatible technologies for your 56kbs allegiance.