On Jun 24 13:58 96, Danny Keogh of 3:633/158 wrote:

DK> -=> Quoting Meng-Shi Lim to All <=-

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

DK> The connect speed is the highest speed the modem will go too.  It
DK> can move anywhere down from this speed.   If you want a higher
DK> speed, you have to hang up and ring again.

Current makes don't have this limitation.  My Couriers for instance, will
quite happily connect at 28800, and then deliver 3750cps on a 2 meg file
later in the same call.   Regular operation is to train up one speed plus -
the connect speed is deliberately conservative.

Regards,
Dave Hatch.

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