Perle Systems 833IS - Manual (Page 273)

Appendix 2: AT Command Set
Perle 833IS User Guide 257
Subparameter
Definitions
 <mod> = A decimal number which specifies the preferred modulation
(automode enabled) or the modulation (automode disabled) to use in originating
or answering a connection. The options are:
The modem may also automatically switch to another modulation (automode),
subject to the following constraints:
a. The modem may not be able to automatically switch from the current modulation
(specified by <mod>) to some other modulation. For example, there is no
standard way to automode from Bell 103 to V.23.
b. The DTE may disable automode operation (see <automode> below).
c. The DTE may constrain the range of modulations available by specifying the
<mod> Modulation Possible Rates (bps) 1 Notes
 V.21 300
 V.22 1200
 V.22 bis 2400 or 1200
 V.23 1200 See Note 2
V.32 9600 or 4800
 V.32 bis 14400, 12000, 9600, 7200, or 4800
 V.34 33600, 31200, 28800, 26400, 24000,
21600, 19200, 16800, 14400, 12000,
9600, 7200, 4800, or 2400
 K56flex 56000, 54000, 52000, 50000, 48000,
46000, 44000, 42000, 40000, 38000,
36000, 34000, 32000 [default]
 V.90 56000, 54667, 53333, 52000, 50667,
49333, 48000, 46667, 45333, 42667,
41333, 40000, 38667, 37333, 36000,
34667, 33333, 32000, 30667, 29333,
28000
 Bell 103 300
 Bell 212 1200
Notes:
1. See optional <automode>, <min_rate>, and <max_rate> subparameters.
2. For V.23, originating modes transmit at 75 bps and receive at 1200 bps; answering modes transmit
at 1200bps and receive at 75 bps. The rate is always specified as 1200 bps.