-= Pete Replied to Meng-Shi Lim about: Fallback limits =-

G'day Meng-Shi

 ML> Are there any v34 modems out there that allows you to set the
 ML> fallback limit of a v34 connection (ie stop the fallback below
 ML> certain speed) ? I find that if I enable the fallback option, my
 ML> 21600 (or higher) v34 connections can sometimes drop down to
 ML> 7200 or 9600 but I know that the phone line has never had any
 ML> problems running at 14.4k v32bis. I just don't know why it would
 ML> retrain and drop down so low.

I can't answer that one but as V.34 will speed step back and fwrd as
the line conditions change you'd be wise to leave it alone to do it's
thing.

 ML> Another question: on a 28.8k modem, if the connection is made at
 ML> less than 28.8k (eg 21600), can the modem pick up and
 ML> renegotiate a higher speed from this point onwards if the
 ML> quality of the line improves? (Personally I don't think so but
 ML> you'll never know). I know that the modem can retrain up and
 ML> down from the connection speed (eg 21600 -> 19200 ->21600) but
 ML> I'm not sure about the above.

Yep V.34 does just that, I quite often connect at 24000 or 26400 only
to check after the call to find the modem has stepped fwrd to 28800.

   -=Pete=-

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