Allied Data Technologies TRON SECURE 33.6, Руководство пользователя

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2. The [automod] parameter:
[automode] is an optional numeric value which enables or disables automatic
modulation negotiation using V.8 or V.32 bis Annex A.
The options are:
[automode] Option selected
0
Automode disabled
1 Automode enabled using V.8 or V.32 Annex A (default)
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:
AT+MS=9,0,1200,4800 selects V.32 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:
AT+MS=9,0,2400,14400 selects V.32 9600 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:
AT+MS=11,0,16800,16800 selects V.34 16800 bps fixed mode
(no comparable S37 command).
AT+MS=9,0,12000,12000 selects V.32 bis 12000 bps fixed mode
(same as N0S-37=-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, or
V.32 bis Annex A if 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 selects automoding down from V.32 bis 14400
bps.
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