User's Manual

<min rate> = 0 Minimum allowed data rate
-<automode> = 1
Lowest data rate = 300 bps
-<automode> = 0
Lowest data rate = (Lowest modulation data rate)
<min rate> =/ 0 Lowest permitted connection rate
<max rate> This parameter sets the highest speed at which the modem may
establish a connection. This feature is also controlled by the S37 S-Register.
The <max rate> setting is based on which command, S37 or +MS=m, was
issued last Range:
<max rate> = 0, 300, 1200, 2400, 4800, 7200, 9600, 12,200, 14,400, 16,800,
19,200, 21,600, 24,000, 26,400, 28,800, 31,200, 33,333, 33,600,
37,333, 41,333, 42,666, 44,000, 45,333, 46,666, 48,800, 49,333,
50,666, 52,000, 53,333, 54,666*, 56,000*, and 57,333* bps
Default: <max rate> = 0
<max rate> = 0 Maximum allowed data rate:
- If the maximum modulation data rate is less than or equal to the
DTE data rate, then the highest data rate is the highest
modulation data rate.
- If the maximum modulation data rate is greater than the DTE
data rate, then the highest data rate is the modulation data rate
equal to or just below the DTE data rate.
<max rate> ≠ 0 Highest permitted data rate
+MS – Modulation Selection
Examples (DTE data rate = 115,200 bps): Speed
+MS = V32B, 1, 9600, 14400 9600 - 14400
+MS = V34, 1, 0, 0 300 - 28800
+MS = V34, 1, 300, 28800 300 - 28800
+MS = V34, 1, 9600, 28800 9600 - 28800
+MS = V34, 1, 28800, 28800 28800 - only
+MS = V34, 0, 19200, 26400 19200 - 26400
+MS = V32, 1, 0, 0 300 - 9600
+MS = V32, 0, 0, 0 4800 - 9600
+MS = V90, 1, 0, 0 0 - 57333*
*Current download speeds are limited to 53,333 bps due to the limited power levels of the PSTN.
AT COMMANDS: DATA MODEM 2-15