Boca 112k DynamicDuo, Справочник по аппаратуре

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Modem Command Reference Modem Command Reference Modem Command Reference Modem Command Reference Modem Command Reference
The default value is 1, which enables automode. Note, however, there are
modulations for which there is no automatic negotiation, e.g., Bell 212
(<mod> = 69).
For <automode> = 0 (automode disabled, i.e., fixed modulation):
a. If <max_rate> is within the rates supported by the selected modulation,
the selected rate is that specified by <max_rate>. For example:
+MS=10,0,1200,4800,0,0,4800 selects V.32 bis 4800 bps fixed rate.
b. If <max_rate> is greater than the highest speed supported by the
modulation specified by <mod>, the starting rate is the highest rate
supported by the selected modulation. For example:
+MS=10,0,2400,50000,0,0,14400 selects V.32 bis 14400, 12000, 9600,
7200, or 4800 bps.
c. To emulate issuance of the N0S37=x command sequence to select fixed
mode operation, specify the <max_rate> and <min_rate> both to be the
(same) requested speed, and <mod> to be the modulation for that speed. For
example:
+MS=11,0,16800,16800,0,0,21600 selects V.34 16800 bps fixed mode (no
comparable S37 command).
+MS=10,0,12000,12000,0,0,14400 selects V.32 bis 12000 bps fixed mode
(same as N0S37=10).
For <automode> = 1 (automode enabled, i.e., automatically selected speed and
modulation):
The modem connects at the highest possible rate in accordance with V.8 bis/V.8, or
V.32 bis Annex A if V.8 bis/V.8 is not supported by the remote modem.
a. If <max_rate> is greater than the highest rate supported by the modulation
specified by <mod>, the modem automodes down from the highest rate of the
selected modulation. For example:
+MS=10,1,1200,24000,0,0,14400 selects automoding down from V.32 bis
14400 bps.
9346.p65 11/20/97, 9:34 AM 47