Steven, at 08:04 on Oct 18 1996, you wrote to David Drummond ...

SA>> (but then again, one is Full Duplex, HST is half 
SA>> duplex....)

DD>> Not quite, it automatically switches to the other "duplex" 
DD>> when data must b returned.

SA> Its still only one Highspeed and one SLOW channel. When data 
SA> is returned it is returned at 450bps untill the modem 
SA> realizes it would be better off swapping the channels to get 
SA> the most data onto the 16k8 side..

Yes.  It's no good for Hydra or any of those two way file transfer
protocols, but for normal zedzap it beats the hell out of V.34 training all
the way down (on a noisy line).  The swap over of the highspeed direction
is fairly instantaneous.

Of course this as all only hearsay - to call out with HST enabled on my
modem would render it non-approved :-)

David
@EOT:

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