AT> Could someone explain a few things to me??

Probably.

AT> What are Bler's??

(Bl)ock (Er)rors.  Under normal (ie low) error rates, the same as bit errors.

AT> And how fast do modems retrain??

Of the order 10 seconds, if the line's good.  Of the order 10 days if it's not.

AT> I'm online at Alpha Med 
AT> Link Line 4 connected at 33600..

Quitcher complaining, lucky dog... :-)

AT> I did an ATI6 and I was connected at 
AT> 31k2.. then as fast as I could type I did an ati6 again and got 33k6?? Do 
AT> they retrain that fast??

No - that was a "Fall Forward".   The modems agree that the
line's gotten better, and also agree that the equalization settings in
current use are fine - all they do is just switch speeds, which can happen
in a few milliseconds.

Standard operating procedure for a USR.  Normal is to connect rather
conservatively, test for a second or so, and then shift up one or two
speeds.

Regards,
Dave Hatch.

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